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Hardware-IRQ
提交 cf6aa868 创建 作者: 赵鹏翀's avatar 赵鹏翀
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*.xml
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<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project id="1066ea9b-8510-4194-ab6e-5b2e2c42f996" name="Hardware-IRQ" version="1">
<files>
<filefolder id="a9f57fc8-c239-4574-a5da-f8fa2760024b" name="子模块">
<file relativepath="ALU.dlsche"/>
<file relativepath="PC.dlsche"/>
<file relativepath="REG.dlsche"/>
<file relativepath="CU.dlsche"/>
<file relativepath="MEM.dlsche"/>
<file relativepath="uPC_NEXT.dlsche"/>
<file relativepath="IRR.dlsche"/>
<file relativepath="IRQ.dlsche"/>
<file relativepath="PR.dlsche"/>
<file relativepath="ISR.dlsche"/>
</filefolder>
<filefolder id="80f1035e-e898-408b-bb0c-e69c72ad13b4" name="汇编源程序">
<file relativepath="ram.asm"/>
<file relativepath="ram.bat"/>
</filefolder>
<filefolder id="03f70f98-2bea-4829-91ee-a9e5f6ee0c87" name="微指令源程序">
<file relativepath="rom.masm"/>
<file relativepath="rom.bat"/>
</filefolder>
<filefolder id="be71b6f0-d920-4758-8b3a-3a343b490c2e" name="存储器映射文件">
<file relativepath="ram.rxm"/>
<file relativepath="rom.rxm"/>
</filefolder>
<file relativepath="Hardware-IRQ.dlsche"/>
</files>
</project>
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<svg height="2993" version="1.1" width="5644" xmlns="http://www.w3.org/2000/svg">
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IRR.dlsche 0 → 100644
浏览文件 @ cf6aa868
添加文件
IRR.dlsche.svg 0 → 100644
浏览文件 @ cf6aa868
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="17" y="1468">读出中断号后的第二个应答信号期间清除响应的中断请求，以免该中断源再次发出中断申请</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="2811" y="815">Q</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="2767" y="1191">PR</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="2811" y="1215">Q</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="2767" y="2391">PR</text>
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<path d="M1744 2167" fill="none" stroke="#ff0000" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
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PC.dlsche 0 → 100644
浏览文件 @ cf6aa868
添加文件
PC.dlsche.svg 0 → 100644
浏览文件 @ cf6aa868
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PR.dlsche 0 → 100644
浏览文件 @ cf6aa868
添加文件
PR.dlsche.svg 0 → 100644
浏览文件 @ cf6aa868
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1240">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1490">NOT</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1580">NOT</text>
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<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1514" y2="1514"/>
<circle cx="657" cy="1514" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="581 1464, 581 1564, 651 1514, 581 1464" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1478">U27</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1610">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="581" x2="521" y1="1544" y2="1544"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="661" x2="721" y1="1544" y2="1544"/>
<circle cx="657" cy="1544" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="581 1494, 581 1594, 651 1544, 581 1494" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="601" y="1508">U28</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="581" y="1640">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2981" x2="2921" y1="964" y2="964"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2981" x2="2921" y1="1024" y2="1024"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="3111" x2="3171" y1="994" y2="994"/>
<path d="M3059 942 A 47 47 0 1 1 3059 1035" fill="none" stroke="#000000" stroke-linecap="round" stroke-width="5"/>
<polyline fill="none" points="3060 1036, 2981 1036, 2981 942, 3060 942" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="3022" y="936">U2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="3005" y="1082">AND</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1181" x2="1121" y1="1894" y2="1894"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1261" x2="1321" y1="1894" y2="1894"/>
<circle cx="1257" cy="1894" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="1181 1844, 1181 1944, 1251 1894, 1181 1844" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1201" y="1858">U4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1181" y="1990">NOT</text>
<polyline fill="none" points="971 1454, 1121 1454, 1121 1894" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="981" y="1444">GS=0表示有外部中断请求</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1131" x2="1071" y1="1084" y2="1084"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1211" x2="1271" y1="1084" y2="1084"/>
<circle cx="1207" cy="1084" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="1131 1034, 1131 1134, 1201 1084, 1131 1034" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1151" y="1048">U5</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1131" y="1180">NOT</text>
<polyline fill="none" points="971 1084, 1071 1084" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1721 1244, 1271 1244, 1271 1084" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="250" font-weight="700" text-anchor="start" x="501" y="314">PR优先级判别器</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2121" y="1194">AGTB AEQB ALTB OAGTB OAEQB OALTB</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2121" y="1294">0 0 0 1 0 1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2081" x2="2021" y1="994" y2="994"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2161" x2="2221" y1="994" y2="994"/>
<circle cx="2157" cy="994" fill="none" r="5" stroke="#000000" stroke-width="5"/>
<polygon fill="#ffffff" fill-opacity="0.5" points="2081 944, 2081 1044, 2151 994, 2081 944" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2101" y="958">U8</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2081" y="1090">NOT</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2481" x2="2421" y1="934" y2="934"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2481" x2="2421" y1="994" y2="994"/>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="2611" x2="2671" y1="964" y2="964"/>
<path d="M2559 912 A 47 47 0 0 1 2559 1005" fill="none" stroke="#000000" stroke-linecap="round" stroke-width="5"/>
<polyline fill="none" points="2560 1006, 2481 1006, 2481 912, 2560 912" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2522" y="906">U20</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2505" y="1052">AND</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2261" y="824">A&gt;B，有更高优先级的中断请求</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="2121" y="1144">A=B时输入输出逻辑关系</text>
<polyline fill="none" points="1971 994, 2021 994" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="60" font-weight="700" text-anchor="start" x="921" y="514">固定优先级，0级中断优先级最高</text>
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<text alignment-baseline="central" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="3271" y="1494">IRNM0</text>
<polygon fill="#ffff80" points="3271 1594, 3271 1569, 3396 1569, 3421 1594, 3396 1619, 3271 1619, 3271 1594" stroke="#800000" stroke-width="1"/>
<text alignment-baseline="central" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="3271" y="1594">IRNM1</text>
<polygon fill="#ffff80" points="3271 1694, 3271 1669, 3396 1669, 3421 1694, 3396 1719, 3271 1719, 3271 1694" stroke="#800000" stroke-width="1"/>
<text alignment-baseline="central" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="3271" y="1694">IRNM2</text>
<polyline fill="none" points="1971 934, 2421 934" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="2221 994, 2421 994" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="1321 1894, 2871 1894, 2871 1024, 2921 1024" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<polyline fill="none" points="3171 994, 3271 994" stroke="#0000ff" stroke-linecap="round" stroke-linejoin="round" stroke-width="5"/>
<circle cx="1521" cy="1334" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1491" cy="1364" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1461" cy="1394" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
</svg>
REG.dlsche 0 → 100644
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添加文件
REG.dlsche.svg 0 → 100644
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这个 源代码变更 因为 太大 而不能显示。 你可以 浏览blob 。
dmasm.c 0 → 100644
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/*******************************************************************************
*******************************************************************************/
#define _CRT_SECURE_NO_WARNINGS
#define _CRT_NONSTDC_NO_DEPRECATE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
typedef unsigned char BYTE;
typedef long BOOL;
#define FALSE 0
#define TRUE 1
#define MAX_LINE_LENGTH 256 // 一行代码最多可以有多少个字符
#define MAX_LINE_COUNT 1024 // 源代码文件最多可以有多少行
#define MAX_SYMBOL_LENGTH 64 // 一个符号最多可以包含多少个字符
#define MAX_SYMBOL_COUNT 256 // 源代码文件中最多可以包含多少个符号
#ifndef MAX_PATH
#define MAX_PATH 256 // 文件路径最多可以包含多少个字符
#endif
// 代码行数据库。记录源代码文件中所有代码行的信息（包括注释行、空行）
struct LINE_RECORD
{
char line_string[MAX_LINE_LENGTH]; // 代码行的内容
unsigned long line_num; // 行号
unsigned long address; // 此行代码转换的机器码在映像文件中的地址（偏移）
int machine_code_count; // 此行代码转换的机器码的字节数量
unsigned long flag; // 代码行标志位，32位
};
struct LINE_RECORD line_database[MAX_LINE_COUNT] = {0};
int line_count = 0;
int machine_code_line_count = 0; // 记录产生了机器码的代码行的数量
// 在此定义所有的代码行标志位。注意，代码行标志位是按位或的关系。
#define LF_INSTRUCTION 0x00000001 // 代码行标志位的最低位是1，表示此行是一条指令，否则表示此行是数据
// 重定位表。如果指令中使用了标号、变量名等符号，在第一次扫描时无法确定他们的地址，需要
// 在第二次扫描时进行重定位。
struct REALLOCATE
{
unsigned long address; // 第一次扫描时，在这里记录了需要重定位的机器码的地址（偏移），
// 第二次扫描时，根据符号的地址进行重定位。
char symbol_name[MAX_SYMBOL_LENGTH]; // 需要重定位的符号名称。
int line_num; // 行号。
};
struct REALLOCATE reallocate_table[MAX_LINE_COUNT] = {0};
int reallocate_count = 0;
// 符号表。符号包括源代码中的标号、变量名。
struct SYMBOL
{
char name[MAX_SYMBOL_LENGTH]; // 符号名称
unsigned long address; // 符号表示的地址。重定位时需要用到。
int machine_code_count; // 符号生成的机器码的数量（以字节为单位）。
int line_num; // 行号
int ref_count; // 引用计数
};
struct SYMBOL symbol_table[MAX_SYMBOL_COUNT] = {0};
int symbol_count = 0;
// 汇编过程的状态
enum
{
AS_BEGIN // 起始状态。在遇到代码段名称前，处于此状态
,AS_TEXT // 正在处理代码段。遇到代码段名称后，遇到数据的名称前，处于此状态
,AS_DATA // 正在处理数据段。遇到数据段名称后，处于此状态
};
unsigned long assembler_state = AS_BEGIN;
//
// 在下面定义所有的关键字
//
// 段名称
const char* code_section_keyword = ".text"; // 代码段标志
char const* data_section_keyword = ".data"; // 数据段标志
// 指令名称
const char* mov_instruction_keyword = "mov";
const char* jmp_instruction_keyword = "jmp";
const char* add_instruction_keyword = "add";
const char* adc_instruction_keyword = "adc";
const char* sub_instruction_keyword = "sub";
const char* sbb_instruction_keyword = "sbb";
const char* and_instruction_keyword = "and";
const char* or_instruction_keyword = "or";
const char* read_instruction_keyword = "read";
const char* write_instruction_keyword = "write";
const char* jc_instruction_keyword = "jc";
const char* jz_instruction_keyword = "jz";
const char* call_instruction_keyword = "call";
const char* in_instruction_keyword = "in";
const char* out_instruction_keyword = "out";
const char* ret_instruction_keyword = "ret";
const char* shr_instruction_keyword = "shr";
const char* shl_instruction_keyword = "shl";
const char* rcr_instruction_keyword = "rcr";
const char* rcl_instruction_keyword = "rcl";
const char* not_instruction_keyword = "not";
const char* iret_instruction_keyword = "iret";
const char* nop_instruction_keyword = "nop";
const char* int_instruction_keyword = "int";
const char* lea_instruction_keyword = "lea";
// 通用寄存器名称
const char* r0_register_keyword = "r0";
const char* r1_register_keyword = "r1";
const char* r2_register_keyword = "r2";
const char* r3_register_keyword = "r3";
const char* r0_register_indirect_keyword = "[r0]";
const char* r1_register_indirect_keyword = "[r1]";
const char* r2_register_indirect_keyword = "[r2]";
const char* r3_register_indirect_keyword = "[r3]";
const char* a_register_keyword = "a";
const char* sp_register_keyword = "sp";
const char* delimit_char = "\n\t\r "; // 需要忽略的空白字符
const char* delimit_char_comma = "\n\t\r, "; // 需要忽略的空白字符，包括英文逗号
// 汇编产生的机器码
#define MAX_MACHINE_CODE 1024
BYTE machine_code[MAX_MACHINE_CODE];
unsigned long machine_code_address = 0;
unsigned long machine_code_old_address = 0;
const char* assembly_file_name = NULL; // 汇编文件路径
const char* target_file_name = NULL; // 目标文件路径
const char* list_file_name = NULL; // 列表文件路径
const char* dbg_file_name = NULL; // 调试信息文件路径
const unsigned long dbg_file_magic = 58;
const unsigned long dbg_file_version = 1;
// 输出汇编过程中发现的语法错误信息
void error_msg(const char* error_msg, int line_num)
{
if(line_num >= 1)
{
printf("%s:%d: error: %s\n", assembly_file_name, line_num, error_msg);
}
else
{
printf("%s: error: %s\n", assembly_file_name, error_msg);
}
exit(1);
}
char formated_msg[1024]; // 将格式化后的错误信息放在此字符串中。
void error_msg_miss_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令缺少操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
void error_msg_wrong_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令不支持这样的操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
void error_msg_same_symbol(const char* symbol, int line_num, int ref_line_num)
{
sprintf(formated_msg, "符号 %s 重复定义。参见第 %d 行。", symbol, ref_line_num);
error_msg(formated_msg, line_num);
}
void error_msg_keyword_symbol(const char* symbol, int line_num)
{
sprintf(formated_msg, "不能使用保留的关键字 %s 作为符号名称。", symbol);
error_msg(formated_msg, line_num);
}
void error_msg_wrong_data(const char* data, int line_num)
{
sprintf(formated_msg, "%s 不是有效的数据。", data);
error_msg(formated_msg, line_num);
}
// 输出汇编过程中发现的警告信息
void warning_msg(const char* warning_msg, int line_num)
{
if(line_num >= 1)
{
printf("%s:%d: warning: %s\n", assembly_file_name, line_num, warning_msg);
}
else
{
printf("%s: warning: %s\n", assembly_file_name, warning_msg);
}
}
void warning_msg_invalid_line(int line_num)
{
warning_msg("忽略无效的代码行。", line_num);
}
void warning_msg_unref_symbol(const char* symbol, int line_num)
{
sprintf(formated_msg, "符号 %s 未被引用。", symbol);
warning_msg(formated_msg, line_num);
}
// 判断是否是立即数。如果是数字开头，或者是负号开头的，就认为是立即数。
int is_immediate(const char* token)
{
return (isdigit(token[0]) || '-' == token[0]) ? 1 : 0;
}
// 判断是否是主存数据
int is_main_memory(const char* token)
{
return (isdigit(token[0]) || '@' == token[0]) ? 1 : 0;
}
// 指令操作数类型
enum
{
OT_REGISTER_A // 累加器
,OT_REGISTER_R0 // r0
,OT_REGISTER_R1 // r1
,OT_REGISTER_R2 // r2
,OT_REGISTER_R3 // r3
,OT_REGISTER_R0_INDIRECT // [r0]
,OT_REGISTER_R1_INDIRECT // [r1]
,OT_REGISTER_R2_INDIRECT // [r2]
,OT_REGISTER_R3_INDIRECT // [r3]
,OT_IMMEDIATE // 立即数
,OT_SYMBOL // 符号
,OT_REGISTER_SP // 堆栈指针寄存器
};
// 得到指令操作数的类型
unsigned long get_operand_type(const char* op)
{
unsigned long op_type;
if(stricmp(op, a_register_keyword) == 0)
{
op_type = OT_REGISTER_A;
}
else if(stricmp(op, r0_register_keyword) == 0)
{
op_type = OT_REGISTER_R0;
}
else if(stricmp(op, r1_register_keyword) == 0)
{
op_type = OT_REGISTER_R1;
}
else if(stricmp(op, r2_register_keyword) == 0)
{
op_type = OT_REGISTER_R2;
}
else if(stricmp(op, r3_register_keyword) == 0)
{
op_type = OT_REGISTER_R3;
}
else if(stricmp(op, r0_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_R0_INDIRECT;
}
else if(stricmp(op, r1_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_R1_INDIRECT;
}
else if(stricmp(op, r2_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_R2_INDIRECT;
}
else if(stricmp(op, r3_register_indirect_keyword) == 0)
{
op_type = OT_REGISTER_R3_INDIRECT;
}
else if (stricmp(op, sp_register_keyword) == 0)
{
op_type = OT_REGISTER_SP;
}
else if(is_immediate(op))
{
op_type = OT_IMMEDIATE;
}
else
{
op_type = OT_SYMBOL;
}
return op_type;
}
// 根据 r? 寄存器和机器码的基础值，得到一个机器码
char get_machine_code_from_r(unsigned long op_type, char code_base)
{
return code_base + (char)(op_type - OT_REGISTER_R0);
}
// 根据 [r?] 寄存器和机器码的基础值，得到一个机器码
char get_machine_code_from_r_indirect(unsigned long op_type, char code_base)
{
return code_base + (char)(op_type - OT_REGISTER_R0_INDIRECT);
}
// 根据立即数得到一个机器码。注意，允许使用负数，所以返回值是带符号的 8 位 char。
char get_machine_code_from_immediate(const char* immediate)
{
char* end;
int start_index = (immediate[0] == '-' ? 1 : 0);
int base = (immediate[start_index] == '0' && (immediate[start_index + 1] == 'x' || immediate[start_index + 1] == 'X')) ? 16 : 10;
return (char)strtol(immediate, &end, base);
}
// 向重定位表中添加一个重定位信息
void add_reallocate(const char* symbol, int line_num)
{
reallocate_table[reallocate_count].address = machine_code_address;
strcpy(reallocate_table[reallocate_count].symbol_name, symbol);
reallocate_table[reallocate_count].line_num = line_num;
reallocate_count++;
}
// mov op1, op2
void parse_mov(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(mov_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// mov a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x70);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// mov a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x74);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// mov a, symbol
machine_code[machine_code_address] = 0x78;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// mov a, immediate
machine_code[machine_code_address] = 0x7c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if((op1_type >= OT_REGISTER_R0 && op1_type <= OT_REGISTER_R3)
&& OT_REGISTER_A == op2_type)
{
// mov r?, a
machine_code[machine_code_address] = get_machine_code_from_r(op1_type, 0x80);
machine_code_address++;
}
else if((op1_type >= OT_REGISTER_R0_INDIRECT && op1_type <= OT_REGISTER_R3_INDIRECT)
&& OT_REGISTER_A == op2_type)
{
// mov [r?], a
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op1_type, 0x84);
machine_code_address++;
}
else if(OT_SYMBOL == op1_type && OT_REGISTER_A == op2_type)
{
// mov symbol, a
machine_code[machine_code_address] = 0x88;
machine_code_address++;
// 重定位
add_reallocate(op1, line_num);
machine_code_address++;
}
else if((op1_type >= OT_REGISTER_R0 && op1_type <= OT_REGISTER_R3)
&& OT_IMMEDIATE == op2_type)
{
// mov r?, immediate
machine_code[machine_code_address] = get_machine_code_from_r(op1_type, 0x8c);
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if (OT_REGISTER_SP == op1_type && OT_IMMEDIATE == op2_type)
{
// mov sp, immediate
machine_code[machine_code_address] = 0x9c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(mov_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// jmp symbol
void parse_jmp(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(jmp_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// jmp symbol
machine_code[machine_code_address] = 0xAC;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jmp_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// add op1, op2
void parse_add(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(add_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// add a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x10);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// add a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x14);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// add a, symbol
machine_code[machine_code_address] = 0x18;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// add a, immediate
machine_code[machine_code_address] = 0x1c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(add_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// adc op1, op2
void parse_adc(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(adc_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// adc a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x20);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// adc a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x24);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// adc a, symbol
machine_code[machine_code_address] = 0x28;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// adc a, immediate
machine_code[machine_code_address] = 0x2c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(adc_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// sub op1, op2
void parse_sub(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(sub_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// sub a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x30);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// sub a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x34);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// sub a, symbol
machine_code[machine_code_address] = 0x38;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// sub a, immediate
machine_code[machine_code_address] = 0x3c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(sub_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// sbb op1, op2
void parse_sbb(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(sbb_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// sbb a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x40);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// sbb a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x44);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// sbb a, symbol
machine_code[machine_code_address] = 0x48;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// sbb a, immediate
machine_code[machine_code_address] = 0x4c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(sbb_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// and op1, op2
void parse_and(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(and_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// and a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x50);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// and a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x54);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// and a, symbol
machine_code[machine_code_address] = 0x58;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// and a, immediate
machine_code[machine_code_address] = 0x5c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(and_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// or op1, op2
void parse_or(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(or_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0 && op2_type <= OT_REGISTER_R3))
{
// or a, r?
machine_code[machine_code_address] = get_machine_code_from_r(op2_type, 0x60);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type
&& (op2_type >= OT_REGISTER_R0_INDIRECT && op2_type <= OT_REGISTER_R3_INDIRECT))
{
// or a, [r?]
machine_code[machine_code_address] = get_machine_code_from_r_indirect(op2_type, 0x64);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// or a, symbol
machine_code[machine_code_address] = 0x68;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else if(OT_REGISTER_A == op1_type && OT_IMMEDIATE == op2_type)
{
// or a, immediate
machine_code[machine_code_address] = 0x6c;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else
{
error_msg_wrong_op(or_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// lea a, symbol
void parse_lea(int line_num)
{
char *op1, *op2;
unsigned long op1_type, op2_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(lea_instruction_keyword, line_num);
}
op1_type = get_operand_type(op1);
op2_type = get_operand_type(op2);
if(OT_REGISTER_A == op1_type && OT_SYMBOL == op2_type)
{
// lea a, symbol
machine_code[machine_code_address] = 0x98;
machine_code_address++;
// 重定位
add_reallocate(op2, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(lea_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// read symbol
void parse_read(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(read_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// read symbol
machine_code[machine_code_address] = 0x90;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(read_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// write symbol
void parse_write(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(write_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// write symbol
machine_code[machine_code_address] = 0x94;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(write_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// jc symbol
void parse_jc(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(jc_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// jc symbol
machine_code[machine_code_address] = 0xA0;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jc_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// jz symbol
void parse_jz(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(jz_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// jz symbol
machine_code[machine_code_address] = 0xA4;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(jz_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// call symbol
void parse_call(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(call_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_SYMBOL == op_type)
{
// call symbol
machine_code[machine_code_address] = 0xE8;
machine_code_address++;
// 重定位
add_reallocate(op, line_num);
machine_code_address++;
}
else
{
error_msg_wrong_op(call_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// int immediate
void parse_int(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(int_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_IMMEDIATE == op_type)
{
// int immediate
machine_code[machine_code_address] = 0xB8;
machine_code_address++;
machine_code[machine_code_address] = get_machine_code_from_immediate(op);
machine_code_address++;
}
else
{
error_msg_wrong_op(int_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// in
void parse_in(int line_num)
{
machine_code[machine_code_address] = 0xB0;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// out
void parse_out(int line_num)
{
machine_code[machine_code_address] = 0xB4;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// ret
void parse_ret(int line_num)
{
machine_code[machine_code_address] = 0xC8;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// shr a
void parse_shr(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(shr_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_REGISTER_A == op_type)
{
machine_code[machine_code_address] = 0xD0;
machine_code_address++;
}
else
{
error_msg_wrong_op(shr_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// shl a
void parse_shl(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(shl_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_REGISTER_A == op_type)
{
machine_code[machine_code_address] = 0xD4;
machine_code_address++;
}
else
{
error_msg_wrong_op(shl_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// rcr a
void parse_rcr(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(rcr_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_REGISTER_A == op_type)
{
machine_code[machine_code_address] = 0xD8;
machine_code_address++;
}
else
{
error_msg_wrong_op(rcr_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// rcl a
void parse_rcl(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(rcl_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_REGISTER_A == op_type)
{
machine_code[machine_code_address] = 0xDC;
machine_code_address++;
}
else
{
error_msg_wrong_op(rcl_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// not a
void parse_not(int line_num)
{
char *op;
unsigned long op_type;
if(assembler_state != AS_TEXT)
{
warning_msg_invalid_line(line_num);
return;
}
op = strtok(NULL, delimit_char);
if(NULL == op)
{
error_msg_miss_op(not_instruction_keyword, line_num);
}
op_type = get_operand_type(op);
if(OT_REGISTER_A == op_type)
{
machine_code[machine_code_address] = 0xE4;
machine_code_address++;
}
else
{
error_msg_wrong_op(not_instruction_keyword, line_num);
}
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// iret
void parse_iret(int line_num)
{
machine_code[machine_code_address] = 0xF8;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// nop
void parse_nop(int line_num)
{
machine_code[machine_code_address] = 0xE0;
machine_code_address++;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// 向符号表中添加一个符号
void add_symbol(const char* symbol, int line_num)
{
int i;
// 符号名称不能重复
for(i=0; i<symbol_count; i++)
{
if(stricmp(symbol, symbol_table[i].name) == 0)
{
error_msg_same_symbol(symbol, line_num, symbol_table[i].line_num);
}
}
// 符号数量有限
if(symbol_count == MAX_SYMBOL_COUNT)
{
sprintf(formated_msg, "定义了太多的符号。最多可以定义 %d 个符号。", MAX_SYMBOL_COUNT);
error_msg(formated_msg, line_num);
}
// 添加符号
strcpy(symbol_table[symbol_count].name, symbol);
symbol_table[symbol_count].address = machine_code_address;
symbol_table[symbol_count].line_num = line_num;
symbol_count++;
}
// 解析符号
void parse_symbol(const char* symbol_with_colon, int line_num)
{
char symbol[MAX_SYMBOL_LENGTH];
char* token;
// 删除符号末尾的冒号
strcpy(symbol, symbol_with_colon);
symbol[strlen(symbol) - 1] = 0;
if(AS_TEXT == assembler_state)
{
// 代码段中的标号作为符号。记录到符号表中，不产生机器码。
add_symbol(symbol, line_num);
// 标号必须单独占一行，否则报错
if (strtok(NULL, delimit_char) != NULL)
{
error_msg("标号必须单独占用一行。", line_num);
}
}
else if(AS_DATA == assembler_state)
{
// 数据段中的变量作为符号。一个变量可以包含多个字节数据。记录到符号表中，产生机器码。
add_symbol(symbol, line_num);
while((token = strtok(NULL, delimit_char)) != NULL)
{
if(!is_immediate(token))
{
error_msg_wrong_data(token, line_num);
}
machine_code[machine_code_address] = get_machine_code_from_immediate(token);
machine_code_address++;
symbol_table[symbol_count - 1].machine_code_count++;
}
}
else
{
warning_msg_invalid_line(line_num);
}
}
// 解析代码段开始标志
void parse_code_section_keyword(int line_num)
{
// 代码段标志
if(AS_DATA == assembler_state)
{
error_msg("代码段不能定义在数据段的后面。", line_num);
}
else if(AS_TEXT == assembler_state)
{
error_msg("定义了重复的代码段。", line_num);
}
assembler_state = AS_TEXT;
}
// 解析数据段开始标志
void parse_data_section_keyword(int line_num)
{
// 数据段标志
if(AS_DATA == assembler_state)
{
error_msg("定义了重复的数据段。", line_num);
}
else if(AS_BEGIN == assembler_state)
{
error_msg("数据段不能定义在代码段的前面。", line_num);
}
assembler_state = AS_DATA;
}
// 定义关键字和解析函数的对应关系
typedef void (*PARSE_FUNCTION)(int line_num);
struct KEYWORD_FUNCTION_ENTRY
{
const char** keyword;
PARSE_FUNCTION parse_function;
};
//
// 必须将关键字及其解析函数放在下面的表中。从而可以使用“表驱动”的编程模式。
//
struct KEYWORD_FUNCTION_ENTRY keyword_function_table[] =
{
{ NULL, NULL } // 未用
,{ &code_section_keyword, parse_code_section_keyword }
,{ &data_section_keyword, parse_data_section_keyword }
,{ &mov_instruction_keyword, parse_mov }
,{ &jmp_instruction_keyword, parse_jmp }
,{ &add_instruction_keyword, parse_add }
,{ &adc_instruction_keyword, parse_adc }
,{ &sub_instruction_keyword, parse_sub }
,{ &sbb_instruction_keyword, parse_sbb }
,{ &and_instruction_keyword, parse_and }
,{ &or_instruction_keyword, parse_or }
,{ &read_instruction_keyword, parse_read }
,{ &write_instruction_keyword, parse_write }
,{ &jc_instruction_keyword, parse_jc }
,{ &jz_instruction_keyword, parse_jz }
,{ &call_instruction_keyword, parse_call }
,{ &in_instruction_keyword, parse_in }
,{ &out_instruction_keyword, parse_out }
,{ &ret_instruction_keyword, parse_ret }
,{ &shr_instruction_keyword, parse_shr }
,{ &shl_instruction_keyword, parse_shl }
,{ &rcr_instruction_keyword, parse_rcr }
,{ &rcl_instruction_keyword, parse_rcl }
,{ &not_instruction_keyword, parse_not }
,{ &iret_instruction_keyword, parse_iret }
,{ &nop_instruction_keyword, parse_nop }
,{ &int_instruction_keyword, parse_int }
,{ &lea_instruction_keyword, parse_lea }
,{ &r0_register_keyword, NULL }
,{ &r1_register_keyword, NULL }
,{ &r2_register_keyword, NULL }
,{ &r3_register_keyword, NULL }
,{ &r0_register_indirect_keyword, NULL }
,{ &r1_register_indirect_keyword, NULL }
,{ &r2_register_indirect_keyword, NULL }
,{ &r3_register_indirect_keyword, NULL }
,{ &a_register_keyword, NULL }
,{ &sp_register_keyword, NULL }
};
// 判断是否是一个关键字。返回0，不是关键字；返回非0，是关键字，并且返回值就是关键字在表中的下标。
int match_keyword(const char* token)
{
int i;
for(i=1; i<sizeof(keyword_function_table)/sizeof(keyword_function_table[0]); i++)
{
if(stricmp(token, *keyword_function_table[i].keyword) == 0)
{
return i;
}
}
return 0;
}
// 判断是否是一个符号
int is_symbol(const char* token, int line_num)
{
int i;
char symbol_name[MAX_SYMBOL_LENGTH];
// 最后一个字符必须是冒号
if(token[strlen(token) - 1] != ':')
{
return 0;
}
// 第一个字符必须是字母或者下划线
if(token[0] != '_' && !isalpha(token[0]))
{
return 0;
}
// 后面的字符必须是字母、数字、下划线
for(i=0; i<(int)strlen(token)-2; i++)
{
if(token[i] != '_' && !isalpha(token[i]) && !isdigit(token[i]))
{
return 0;
}
}
// 不能与关键字相同
strcpy(symbol_name, token);
symbol_name[strlen(symbol_name) - 1] = 0;
if(match_keyword(symbol_name) != 0)
{
error_msg_keyword_symbol(symbol_name, line_num);
}
return 1;
}
// 输出版本信息
void version_msg()
{
printf(
"Engintime DM1000 8位模型机汇编器 [版本 2.0]\n"
);
}
// 输出帮助信息
void help_msg()
{
printf(
"Engintime DM1000 8位模型机汇编器。\n\n"
"用法:\n\n"
" dmasm.exe assembly_file_name [options]\n\n"
"选项:\n\n"
" -g debug_file_name\t指定生成的调试信息文件路径。\n"
" -h\t\t\t打印此帮助信息。\n"
" -l list_file_name\t指定生成的列表文件路径。\n"
" -o target_file_name\t指定生成的目标文件路径。若未指定，默认生成 a.obj 文件。\n"
" -v\t\t\t打印版本信息。\n"
);
printf("\n");
version_msg();
exit(1);
}
void argument_error_msg()
{
printf("命令行参数错误。\n\n");
help_msg();
}
// 处理器用户输入的命令行参数
void process_argument(int argc, char* argv[])
{
int i;
// argv[0] 是 "easm.exe"，所以可以忽略。
for(i=1; i<argc; i++)
{
if(strcmp(argv[i], "-v") == 0)
{
version_msg();
exit(1);
}
else if(strcmp(argv[i], "-h") == 0)
{
help_msg();
}
else if(strcmp(argv[i], "-o") == 0)
{
if(i + 1 < argc)
{
i++;
target_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(strcmp(argv[i], "-l") == 0)
{
if(i + 1 < argc)
{
i++;
list_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(strcmp(argv[i], "-g") == 0)
{
if(i + 1 < argc)
{
i++;
dbg_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(NULL == assembly_file_name && argv[i][0] != '-')
{
// 输入的汇编源代码文件路径。
assembly_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
//
// 如果命令行参数中没有指定输入的汇编文件，就打印错误信息后退出
//
if(NULL == assembly_file_name)
{
printf("命令行参数错误。没有指定汇编源代码文件的路径。\n");
help_msg();
}
}
// 将一个字符串写入二进制文件中。先将字符串长度写入文件，然后将字符串中的
// 每个字符依次写入文件，不包括字符串末尾的 0.
void write_string_to_binary_file(const char* str, FILE* fp)
{
int str_length;
if(str != NULL)
{
str_length = strlen(str);
fwrite(&str_length, 1, sizeof(str_length), fp);
fwrite(str, 1, str_length, fp);
}
else
{
str_length = 0;
fwrite(&str_length, 1, sizeof(str_length), fp);
}
}
int main(int argc, char* argv[])
{
FILE* fp;
char* token;
char line[MAX_LINE_LENGTH];
int i, j;
int line_num = 1; // 行号从第一行开始计数
int keyword_index;
//
// 处理命令行参数
//
process_argument(argc, argv);
//
// 打开汇编源代码文件
//
fp = fopen(assembly_file_name, "r");
if(NULL == fp)
{
printf("无法打开源代码文件 %s\n", assembly_file_name);
return 1;
}
//////////////////////////////////////////////////////////////////////////
// 第一遍扫描
version_msg();
printf("\n正在汇编 %s...\n", assembly_file_name);
//
// 一次读取一行文本，同时记录所有的代码行信息
//
while(fgets(line, sizeof(line), fp) != NULL)
{
//
// 将一行代码的信息记录到代码行数据库中
//
strcpy(line_database[line_count].line_string, line);
line_database[line_count].line_num = line_num;
line_database[line_count].address = machine_code_address;
//
// 将代码行中的注释剥离
//
line[strcspn(line, ";")] = 0;
//
// 开始解析代码行
//
token = strtok(line, delimit_char);
if(NULL == token)
{
// 如果是空行，不做任何处理
}
else if((keyword_index = match_keyword(token)) != 0
&& keyword_function_table[keyword_index].parse_function != NULL)
{
// 根据关键字进行相应的处理
keyword_function_table[keyword_index].parse_function(line_num);
}
else if(is_symbol(token, line_num))
{
// 处理符号
parse_symbol(token, line_num);
}
else
{
error_msg("无法识别的代码行。", line_num);
}
//
// 补充代码行数据库信息
//
line_database[line_count].machine_code_count = machine_code_address - machine_code_old_address;
machine_code_old_address = machine_code_address;
//
// 记录产生了机器码的代码行数量
//
if(line_database[line_count].machine_code_count != 0)
{
machine_code_line_count++;
}
//
// 增加行号
//
line_count++;
line_num++;
if(line_count == MAX_LINE_COUNT)
{
sprintf(formated_msg, "汇编文件中的代码行过多，最多只能有 %d 行代码。", MAX_LINE_COUNT);
error_msg(formated_msg, -1);
}
}
fclose(fp);
//////////////////////////////////////////////////////////////////////////
// 第二遍扫描
//
// 根据符号表更新重定位表
//
for(i=0; i<reallocate_count; i++)
{
for(j=0; j<symbol_count; j++)
{
if(stricmp(symbol_table[j].name, reallocate_table[i].symbol_name) == 0)
{
machine_code[reallocate_table[i].address] = (BYTE)symbol_table[j].address;
symbol_table[j].ref_count++;
break;
}
}
if(j == symbol_count)
{
// 重定位表中使用的符号在符号表中未定义，报错
sprintf(formated_msg, "使用了未定义的符号 %s。", reallocate_table[i].symbol_name);
error_msg(formated_msg, reallocate_table[i].line_num);
}
}
//
// 如果存在未引用的符号，输出警告信息。
//
for(i=0; i<symbol_count; i++)
{
if(0 == symbol_table[i].ref_count)
{
warning_msg_unref_symbol(symbol_table[i].name, symbol_table[i].line_num);
}
}
//////////////////////////////////////////////////////////////////////////
// 产生各种输出文件
//
// 将机器码写入二进制文件
//
if(NULL == target_file_name)
{
target_file_name = "a.obj";
}
fp = fopen(target_file_name, "wb");
if(NULL == fp)
{
printf("无法打开输出文件 %s\n", target_file_name);
return 1;
}
fwrite(machine_code, 1, machine_code_address, fp);
fclose(fp);
printf("\n生成目标文件 %s\n", target_file_name);
//
// 将代码行数据库中的信息写入列表文件
//
if(list_file_name != NULL)
{
fp = fopen(list_file_name, "w");
if(NULL == fp)
{
printf("无法打开列表文件 %s\n", list_file_name);
return 1;
}
for(i=0; i<line_count; i++)
{
// 行号
fprintf(fp, "%04d ", line_database[i].line_num);
// 地址和机器码
if(line_database[i].machine_code_count > 0)
{
fprintf(fp, "%02X ", line_database[i].address);
for(j=0; j<line_database[i].machine_code_count; j++)
{
// 确保每行最多写两个字节的机器码
if(j != 0 && j % 2 == 0)
{
if(2 == j)
{
fprintf(fp, " ");
}
else
{
fprintf(fp, "\n ");
}
}
fprintf(fp, "%02X ", machine_code[line_database[i].address + j]);
if(1 == j)
{
fprintf(fp, " ");
fprintf(fp, line_database[i].line_string);
}
}
if(1 == j)
{
fprintf(fp, " ");
fprintf(fp, line_database[i].line_string);
}
else if(j > 2)
{
fprintf(fp, "\n");
}
}
else
{
fprintf(fp, " ");
// 源代码
fprintf(fp, line_database[i].line_string);
}
}
fclose(fp);
printf("生成列表文件 %s\n", list_file_name);
}
//
// 将代码行数据库中的信息写入二进制的调试信息文件。
//
// 调试信息的基本格式为：
// 魔数（4字节），固定不可改变
// 版本号（4字节），固定不可改变
// 源代码文件绝对路径字符串长度（4字节）
// 源代码文件绝对路径字符串（不包括字符串结尾的0）
// 列表文件绝对路径字符串长度（4字节）
// 列表文件绝对路径字符串（不包括字符串结尾的0）
//
// 代码行数据库中元素的数量（4字节）
// 代码行数据库中的所有元素
//
// 符号表元素的数量（4字节）
// 符号表中的所有元素
//
if(dbg_file_name != NULL)
{
fp = fopen(dbg_file_name, "wb");
if(NULL == fp)
{
printf("无法打开调试信息文件 %s\n", dbg_file_name);
return 1;
}
// 魔数
fwrite(&dbg_file_magic, 1, sizeof(dbg_file_magic), fp);
// 版本号
fwrite(&dbg_file_version, 1, sizeof(dbg_file_version), fp);
// 源代码文件路径
write_string_to_binary_file(assembly_file_name, fp);
// 列表文件路径
write_string_to_binary_file(list_file_name, fp);
// 代码行数据库中的所有元素
fwrite(&machine_code_line_count, 1, sizeof(machine_code_line_count), fp);
for(i=0; i<line_count; i++)
{
// 跳过没有产生机器码的代码行
if(0 == line_database[i].machine_code_count)
{
continue;
}
fwrite(&line_database[i].line_num, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].address, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].machine_code_count, 1, sizeof(int), fp);
fwrite(&line_database[i].flag, 1, sizeof(unsigned long), fp);
}
// 符号表中的所有元素
fwrite(&symbol_count, 1, sizeof(symbol_count), fp);
for(i=0; i<symbol_count; i++)
{
write_string_to_binary_file(symbol_table[i].name, fp);
fwrite(&symbol_table[i].address, 1, sizeof(unsigned long), fp);
fwrite(&symbol_table[i].machine_code_count, 1, sizeof(int), fp);
fwrite(&symbol_table[i].line_num, 1, sizeof(int), fp);
}
fclose(fp);
printf("生成调试信息文件 %s\n", dbg_file_name);
}
return 0;
}
dmasm.exe 0 → 100644
浏览文件 @ cf6aa868
添加文件
microasm.c 0 → 100644
浏览文件 @ cf6aa868
/*******************************************************************************
*******************************************************************************/
#define _CRT_SECURE_NO_WARNINGS
#define _CRT_NONSTDC_NO_DEPRECATE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
typedef unsigned char BYTE;
typedef long BOOL;
#define FALSE 0
#define TRUE 1
#define MAX_LINE_LENGTH 256 // 一行代码最多可以有多少个字符
#define MAX_LINE_COUNT 1024 // 源代码文件最多可以有多少行
#define MAX_SYMBOL_LENGTH 64 // 一个符号最多可以包含多少个字符
#define MAX_SYMBOL_COUNT 256 // 源代码文件中最多可以包含多少个符号
#ifndef MAX_PATH
#define MAX_PATH 256 // 文件路径最多可以包含多少了字符
#endif
// 代码行数据库。记录源代码文件中所有代码行的信息（包括注释行、空行）
struct LINE_RECORD
{
char line_string[MAX_LINE_LENGTH]; // 代码行的内容
unsigned long line_num; // 行号
unsigned long address; // 此行代码转换的机器码在映像文件中的地址（偏移）。注意，对于 DM1000 来说，微指令的一个地址对应 4 个字节。
int machine_code_count; // 此行代码转换的机器码的字节数量
unsigned long flag; // 代码行标志位，32位
};
struct LINE_RECORD line_database[MAX_LINE_COUNT] = {0};
int line_count = 0;
int machine_code_line_count = 0; // 记录产生了机器码的代码行的数量
// 在此定义所有的代码行标志位。注意，代码行标志位是按位或的关系。
#define LF_INSTRUCTION 0x00000001 // 代码行标志位的最低位是1，表示此行是一条指令，否则表示此行是数据
//
// 在下面定义所有的关键字
//
// 寄存器名称
const char* rx_register_keyword = "rx";
const char* mar_register_keyword = "mar";
const char* rin_register_keyword = "rin";
const char* rout_register_keyword = "rout";
const char* sp_register_keyword = "sp";
const char* ia_register_keyword = "ia";
const char* ir_register_keyword = "ir";
const char* flag_register_keyword = "flag";
const char* pc_register_keyword = "pc";
const char* a_register_keyword = "a";
const char* w_register_keyword = "w";
const char* asr_register_keyword = "asr";
const char* upc_register_keyword = "upc";
// 堆栈计数器
const char* csp_counter_keyword = "csp";
//
// alu 操作码
const char* alu_add_keyword = "alu_add";
const char* alu_adc_keyword = "alu_adc";
const char* alu_sub_keyword = "alu_sub";
const char* alu_sbb_keyword = "alu_sbb";
const char* alu_and_keyword = "alu_and";
const char* alu_or_keyword = "alu_or";
const char* alu_aout_keyword = "alu_aout";
const char* alu_shr_keyword = "alu_shr";
const char* alu_shl_keyword = "alu_shl";
const char* alu_rcr_keyword = "alu_rcr";
const char* alu_rcl_keyword = "alu_rcl";
const char* alu_not_keyword = "alu_not";
const char* sp_inc_keyword = "sp_inc";
const char* sp_dec_keyword = "sp_dec";
const char* int_ia_keyword = "int_ia";
// 访问主存或外设的操作数
const char* pc_main_memory_keyword = "[pc]";
const char* mar_main_memory_keyword = "[mar]";
const char* delimit_char = "\n\t\r "; // 需要忽略的空白字符
const char* delimit_char_comma = "\n\t\r, "; // 需要忽略的空白字符，包括英文逗号
// 单操作数微指令
struct ONE_OPERAND_INSTRUCTION_ENTRY
{
const char** op;
unsigned long micro_machine_code;
};
struct ONE_OPERAND_INSTRUCTION_ENTRY one_operand_table[] =
{
{ NULL, 0x0 } // 未用
,{ &pc_register_keyword, 0xffffffff } // inc pc
,{ &upc_register_keyword, 0xffffffcf } // reset upc
};
// 查表，操作数是否匹配。返回0，操作数不匹配；返回非0，操作数匹配，并且返回值就是操作数在表中的下标。
int match_one_operand(const char* op)
{
int i;
for(i=1; i<sizeof(one_operand_table)/sizeof(one_operand_table[0]); i++)
{
if((stricmp(op, *one_operand_table[i].op) == 0))
{
return i;
}
}
return 0;
}
// 双操作数微指令
struct PATH_INSTRUCTION_OPERAND_ENTRY
{
const char** op1;
const char** op2;
unsigned long micro_machine_code;
};
//////////////////////////////////////////////////////////////////////////
//
struct PATH_INSTRUCTION_OPERAND_ENTRY path_operand_table[] =
{
{ NULL, NULL, 0x0 } // 未用
,{ &pc_main_memory_keyword, &ir_register_keyword, 0xfff93fef } // path [pc], ir ff e3 ff ff
,{ &alu_add_keyword, &a_register_keyword, 0x99e4ffef } // path alu_add, a ff ff fe 90
,{ &alu_sub_keyword, &a_register_keyword, 0x86e4ffef } // path alu_sub, a ff ff fe 91
,{ &alu_or_keyword, &a_register_keyword, 0xbee4ffef } // path alu_or, a
,{ &alu_and_keyword, &a_register_keyword, 0xbbe4ffef } // path alu_and, a
,{ &alu_adc_keyword, &a_register_keyword, 0x89e4ffef } // path alu_adc, a
,{ &alu_sbb_keyword, &a_register_keyword, 0x96e4ffef } // path alu_sbb, a
,{ &alu_shr_keyword, &a_register_keyword, 0x90d5ffef } // path alu_shr, a ff ff fc b7
,{ &alu_shl_keyword, &a_register_keyword, 0x90d6ffef } // path alu_shl, a
,{ &alu_rcr_keyword, &a_register_keyword, 0x90e5ffef } // path alu_rcr, a
,{ &alu_rcl_keyword, &a_register_keyword, 0x90e6ffef } // path alu_rcl, a
,{ &alu_not_keyword, &a_register_keyword, 0xb0f4ffef } // path alu_not, a
,{ &rx_register_keyword, &w_register_keyword, 0x7ffaffef } // path rx, w
,{ &rx_register_keyword, &mar_register_keyword, 0xfffaf7ef } // path rx, mar
,{ &mar_main_memory_keyword, &w_register_keyword, 0x7ff9fbef } // path [mar], w
,{ &pc_main_memory_keyword, &mar_register_keyword, 0xfff977ef } // path [pc], mar
,{ &pc_main_memory_keyword, &w_register_keyword, 0x7ff97fef } // path [pc], w
,{ &rx_register_keyword, &a_register_keyword, 0xbffaffef } // path rx, a
,{ &mar_main_memory_keyword, &a_register_keyword, 0xbff9fbef } // path [mar], a 从地址寄存器指定的内存单元读数据到a寄存器
,{ &pc_main_memory_keyword, &a_register_keyword, 0xbff97fef } // path [pc], a
,{ &a_register_keyword, &rx_register_keyword, 0xd0b4ffef } // path a, rx
,{ &a_register_keyword, &mar_main_memory_keyword, 0xd0f4fbed } // path a, [mar] 将a寄存器数据写入地址寄存器指向的内存
,{ &pc_main_memory_keyword, &rx_register_keyword, 0xffb97fef } // path [pc], rx
,{ &alu_aout_keyword, &mar_main_memory_keyword, 0xd0f4fbec } // path alu_aout, [mar]
,{ &pc_main_memory_keyword, &pc_register_keyword, 0xfff96fff } // path [pc], pc
,{ &pc_register_keyword, &sp_register_keyword, 0xfff3feef } // path pc, sp
,{ &ia_register_keyword, &mar_register_keyword, 0xfff1f7ef } // path ia, mar
,{ &pc_register_keyword, &mar_register_keyword, 0xfff3f7ef } // path pc, mar
,{ &rin_register_keyword, &a_register_keyword, 0xbff0ffef } // path rin, a
,{ &a_register_keyword, &rout_register_keyword, 0xd0f4ffee } // path a, rout
,{ &mar_main_memory_keyword, &pc_register_keyword, 0xfff9ebef } // path [mar], pc 从地址寄存器指定的内存单元读数据到程序计数器pc
,{ &pc_main_memory_keyword, &sp_register_keyword, 0xfff97eef } // path [pc], sp
,{ &sp_register_keyword, &mar_register_keyword, 0xfff2f7ef } // path sp, mar
,{ &sp_register_keyword, &csp_counter_keyword, 0xff72ffef } // path sp, csp
,{ &pc_main_memory_keyword, &ia_register_keyword, 0xfff97feb } // path [pc], ia
,{ &pc_main_memory_keyword, &asr_register_keyword, 0xfff97def } // path [pc], asr
,{ &csp_counter_keyword, &mar_register_keyword, 0xfff8f7ef } // path csp, mar
,{ &csp_counter_keyword, &sp_register_keyword, 0xfff8feef } // path csp, sp
,{ &sp_inc_keyword, &csp_counter_keyword, 0xffffffe7 } // path sp_inc, csp
,{ &sp_dec_keyword, &csp_counter_keyword, 0xffffffef } // path sp_dec, csp
,{ &pc_register_keyword, &mar_main_memory_keyword, 0xfff3fbed } // path pc, [mar] 将pc值写入mar指向的存储单元
,{ &asr_register_keyword, &pc_register_keyword, 0xfff7efef } // path asr, pc
,{ &sp_register_keyword, &asr_register_keyword, 0xfff2fdef } // path sp, asr
,{ &int_ia_keyword, &mar_register_keyword, 0xfff1f7ef } // path int_ia, mar
};
// 查表，判断两个操作数是否匹配。返回0，操作数不完全匹配；返回非0，操作数完全匹配，并且返回值就是操作数在表中的下标。
int match_ops(const char* op1, const char* op2)
{
int i;
for(i=1; i<sizeof(path_operand_table)/sizeof(path_operand_table[0]); i++)
{
if((stricmp(op1, *path_operand_table[i].op1) == 0)
&& (stricmp(op2, *path_operand_table[i].op2) == 0))
{
return i;
}
}
return 0;
}
// 汇编产生的机器码
#define MAX_MACHINE_CODE 1024
BYTE machine_code[MAX_MACHINE_CODE];
unsigned long machine_code_address = 0; // 一个地址对应一个字节
unsigned long machine_code_old_address = 0;
const char* micro_file_name = NULL; // 微指令文件路径
const char* target_file_name = NULL; // 目标文件路径
const char* list_file_name = NULL; // 列表文件路径
const char* dbg_file_name = NULL; // 调试信息文件路径
const unsigned long dbg_file_magic = 58;
const unsigned long dbg_file_version = 1;
// 输出汇编过程中发现的语法错误信息
void error_msg(const char* error_msg, int line_num)
{
if(line_num >= 1)
{
printf("%s:%d: error: %s\n", micro_file_name, line_num, error_msg);
}
else
{
printf("%s: error: %s\n", micro_file_name, error_msg);
}
exit(1);
}
char formated_msg[1024]; // 将格式化后的错误信息放在此字符串中。
void error_msg_miss_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令缺少操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
void error_msg_wrong_op(const char* instruction_name, int line_num)
{
sprintf(formated_msg, "%s 指令不支持这样的操作数。", instruction_name);
error_msg(formated_msg, line_num);
}
// 定义关键字和解析函数的对应关系
typedef void (*PARSE_FUNCTION)(int line_num);
struct KEYWORD_FUNCTION_ENTRY
{
const char** keyword;
PARSE_FUNCTION parse_function;
};
// 指令名称
const char* dup_instruction_keyword = "dup";
const char* null_instruction_keyword = "null";
const char* path_instruction_keyword = "path";
const char* inc_instruction_keyword = "inc"; // pc+1
const char* reset_instruction_keyword = "reset"; // 复位
const char* ask_for_int_instruction_keyword = "ask_for_int"; //查询硬中断
const char* inta1_instruction_keyword = "inta1"; //第一个中断应答信号
const char* inta2_instruction_keyword = "inta2"; //第二个中断应答信号
const char* eoi_instruction_keyword = "eoi"; //中断返回
// 判断是否是立即数。不支持负数。
int is_immediate(const char* token)
{
return isdigit(token[0]);
}
// 根据立即数得到值。不支持负数。
unsigned long get_value_from_immediate(const char* immediate)
{
char* end;
int base = (immediate[0] == '0' && (immediate[1] == 'x' || immediate[1] == 'X')) ? 16 : 10;
return strtoul(immediate, &end, base);
}
// dup n, null
void parse_dup(int line_num)
{
char *op1, *op2;
int i;
unsigned long micro_instruction_count; // 微指令个数
unsigned long micro_code; // 微指令编码
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(dup_instruction_keyword, line_num);
}
// dup微指令的第一个操作数必须是立即数(十进制或十六进制)
if (!is_immediate(op1))
{
error_msg_wrong_op(dup_instruction_keyword, line_num);
}
// 得到微指令个数
micro_instruction_count = get_value_from_immediate(op1);
// 解析第二个操作数
if (is_immediate(op2))
{
micro_code = get_value_from_immediate(op2);
}
else if(0 == stricmp(op2, null_instruction_keyword))
{
micro_code = 0xffffffff;
}
else
{
error_msg_wrong_op(dup_instruction_keyword, line_num);
}
for (i = 0; i < (int)micro_instruction_count; i++)
{
memcpy(&machine_code[machine_code_address], &micro_code, 4);
machine_code_address += 4;
}
}
// null
void parse_null(int line_num)
{
unsigned long ul = 0xffffffff;
memcpy(&machine_code[machine_code_address], &ul, 4);
machine_code_address += 4;
}
// ask_for_int
void parse_ask_for_int(int line_num)
{
unsigned long ul = 0xffffffaf;
memcpy(&machine_code[machine_code_address], &ul, 4);
machine_code_address += 4;
}
// inta1
void parse_inta1(int line_num)
{
unsigned long ul = 0xfffbffef;
memcpy(&machine_code[machine_code_address], &ul, 4);
machine_code_address += 4;
}
// inta2
void parse_inta2(int line_num)
{
unsigned long ul = 0xfffcffeb;
memcpy(&machine_code[machine_code_address], &ul, 4);
machine_code_address += 4;
}
// eoi
void parse_eoi(int line_num)
{
unsigned long ul = 0xfffdffef;
memcpy(&machine_code[machine_code_address], &ul, 4);
machine_code_address += 4;
}
// path op1, op2
void parse_path(int line_num)
{
char *op1, *op2;
int index;
op1 = strtok(NULL, delimit_char_comma);
op2 = strtok(NULL, delimit_char);
if(NULL == op1 || NULL == op2)
{
error_msg_miss_op(path_instruction_keyword, line_num);
}
index = match_ops(op1, op2);
if (0 == index)
{
error_msg_wrong_op(path_instruction_keyword, line_num);
}
memcpy(&machine_code[machine_code_address], &path_operand_table[index].micro_machine_code, 4);
machine_code_address += 4;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// inc
void parse_inc(int line_num)
{
char *op;
int index;
op = strtok(NULL, delimit_char_comma);
if(NULL == op)
{
error_msg_miss_op(inc_instruction_keyword, line_num);
}
index = match_one_operand(op);
if (0 == index)
{
error_msg_wrong_op(inc_instruction_keyword, line_num);
}
memcpy(&machine_code[machine_code_address], &one_operand_table[index].micro_machine_code, 4);
machine_code_address += 4;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
// reset
void parse_reset(int line_num)
{
char *op;
int index;
op = strtok(NULL, delimit_char_comma);
if(NULL == op)
{
error_msg_miss_op(reset_instruction_keyword, line_num);
}
index = match_one_operand(op);
if (0 == index)
{
error_msg_wrong_op(reset_instruction_keyword, line_num);
}
memcpy(&machine_code[machine_code_address], &one_operand_table[index].micro_machine_code, 4);
machine_code_address += 4;
//
// 在代码行数据库中，标记此行是一个指令行
//
line_database[line_count].flag |= LF_INSTRUCTION;
}
//
// 必须将关键字及其解析函数放在下面的表中。从而可以使用“表驱动”的编程模式。
//
struct KEYWORD_FUNCTION_ENTRY keyword_function_table[] =
{
{ NULL, NULL } // 未用
,{ &dup_instruction_keyword, parse_dup }
,{ &null_instruction_keyword, parse_null }
,{ &path_instruction_keyword, parse_path }
,{ &inc_instruction_keyword, parse_inc }
,{ &reset_instruction_keyword, parse_reset }
,{ &ask_for_int_instruction_keyword, parse_ask_for_int }
,{ &inta1_instruction_keyword, parse_inta1 }
,{ &inta2_instruction_keyword, parse_inta2 }
,{ &eoi_instruction_keyword, parse_eoi }
};
// 判断是否是一个关键字。返回0，不是关键字；返回非0，是关键字，并且返回值就是关键字在表中的下标。
int match_keyword(const char* token)
{
int i;
for(i=1; i<sizeof(keyword_function_table)/sizeof(keyword_function_table[0]); i++)
{
if(stricmp(token, *keyword_function_table[i].keyword) == 0)
{
return i;
}
}
return 0;
}
// 输出版本信息
void version_msg()
{
printf(
"Engintime DM1000 8位模型机微指令汇编器 [版本 2.0]\n"
);
}
// 输出帮助信息
void help_msg()
{
printf(
"Engintime DM1000 8位模型机微指令汇编器。\n\n"
"用法:\n\n"
" microasm.exe micro_file_name [options]\n\n"
"选项:\n\n"
" -g debug_file_name\t指定生成的调试信息文件路径。\n"
" -h\t\t\t打印此帮助信息。\n"
" -l list_file_name\t指定生成的列表文件路径。\n"
" -o target_file_name\t指定生成的目标文件路径。若未指定，默认生成 micro.obj 文件。\n"
" -v\t\t\t打印版本信息。\n"
);
printf("\n");
version_msg();
exit(1);
}
void argument_error_msg()
{
printf("命令行参数错误。\n\n");
help_msg();
}
// 处理器用户输入的命令行参数
void process_argument(int argc, char* argv[])
{
int i;
// argv[0] 是 "easm.exe"，所以可以忽略。
for(i=1; i<argc; i++)
{
if(strcmp(argv[i], "-v") == 0)
{
version_msg();
exit(1);
}
else if(strcmp(argv[i], "-h") == 0)
{
help_msg();
}
else if(strcmp(argv[i], "-o") == 0)
{
if(i + 1 < argc)
{
i++;
target_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(strcmp(argv[i], "-l") == 0)
{
if(i + 1 < argc)
{
i++;
list_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(strcmp(argv[i], "-g") == 0)
{
if(i + 1 < argc)
{
i++;
dbg_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
else if(NULL == micro_file_name && argv[i][0] != '-')
{
// 输入的汇编源代码文件路径。
micro_file_name = argv[i];
}
else
{
argument_error_msg();
}
}
//
// 如果命令行参数中没有指定输入的汇编文件，就打印错误信息后退出
//
if(NULL == micro_file_name)
{
printf("命令行参数错误。没有指定微指令源代码文件的路径。\n");
help_msg();
}
}
// 将一个字符串写入二进制文件中。先将字符串长度写入文件，然后将字符串中的
// 每个字符依次写入文件，不包括字符串末尾的 0.
void write_string_to_binary_file(const char* str, FILE* fp)
{
int str_length;
if(str != NULL)
{
str_length = strlen(str);
fwrite(&str_length, 1, sizeof(str_length), fp);
fwrite(str, 1, str_length, fp);
}
else
{
str_length = 0;
fwrite(&str_length, 1, sizeof(str_length), fp);
}
}
int main(int argc, char* argv[])
{
FILE* fp;
char* token;
char line[MAX_LINE_LENGTH];
int i, j;
int line_num = 1; // 行号从第一行开始计数
int keyword_index;
unsigned long micro_code;
//
// 处理命令行参数
//
process_argument(argc, argv);
//
// 打开汇编源代码文件
//
fp = fopen(micro_file_name, "r");
if(NULL == fp)
{
printf("无法打开微指令源代码文件 %s\n", micro_file_name);
return 1;
}
////////////////////////////////////////////////////////////////////////////
//// 扫描
version_msg();
printf("\n正在汇编 %s...\n", micro_file_name);
//
// 一次读取一行文本，同时记录所有的代码行信息
//
while(fgets(line, sizeof(line), fp) != NULL)
{
//
// 将一行代码的信息记录到代码行数据库中
//
strcpy(line_database[line_count].line_string, line);
line_database[line_count].line_num = line_num;
line_database[line_count].address = machine_code_address;
//
// 将代码行中的注释剥离
//
line[strcspn(line, ";")] = 0;
//
// 开始解析代码行
//
token = strtok(line, delimit_char);
if(NULL == token)
{
// 如果是空行，不做任何处理
}
else if((keyword_index = match_keyword(token)) != 0)
{
// 根据关键字进行相应的处理
keyword_function_table[keyword_index].parse_function(line_num);
}
else if(is_immediate(token))
{
// 将立即数直接作为微指令
micro_code = get_value_from_immediate(token);
memcpy(&machine_code[machine_code_address], &micro_code, 4);
machine_code_address += 4;
}
else
{
error_msg("无法识别的代码行。", line_num);
}
//
// 补充代码行数据库信息
//
line_database[line_count].machine_code_count = machine_code_address - machine_code_old_address;
machine_code_old_address = machine_code_address;
//
// 记录产生了机器码的代码行数量
//
if(line_database[line_count].machine_code_count != 0)
{
machine_code_line_count++;
}
//
// 增加行号
//
line_count++;
line_num++;
if(line_count == MAX_LINE_COUNT)
{
sprintf(formated_msg, "微指令文件中的代码行过多，最多只能有 %d 行代码。", MAX_LINE_COUNT);
error_msg(formated_msg, -1);
}
}
fclose(fp);
////////////////////////////////////////////////////////////////////////////
//// 产生各种输出文件
//
// 将机器码写入二进制文件
//
if(NULL == target_file_name)
{
target_file_name = "micro.obj";
}
fp = fopen(target_file_name, "wb");
if(NULL == fp)
{
printf("无法打开目标文件 %s\n", target_file_name);
return 1;
}
fwrite(machine_code, 1, machine_code_address, fp);
fclose(fp);
printf("\n生成目标文件 %s\n", target_file_name);
//
// 将代码行数据库中的信息写入列表文件
//
if(list_file_name != NULL)
{
fp = fopen(list_file_name, "w");
if(NULL == fp)
{
printf("无法打开列表文件 %s\n", list_file_name);
return 1;
}
for(i=0; i<line_count; i++)
{
// 行号
fprintf(fp, "%04d ", line_database[i].line_num);
// 地址和机器码
if(line_database[i].machine_code_count > 0)
{
fprintf(fp, "%02X ", line_database[i].address);
for(j=0; j<4; j++)
{
fprintf(fp, "%02X ", machine_code[line_database[i].address + j]);
}
fprintf(fp, " ");
}
else
{
fprintf(fp, " ");
}
// 源代码
fprintf(fp, line_database[i].line_string);
}
fclose(fp);
printf("生成列表文件 %s\n", list_file_name);
}
//
// 将代码行数据库中的信息写入二进制的调试信息文件。
//
// 调试信息的基本格式为：
// 魔数（4字节），固定不可改变
// 版本号（4字节），固定不可改变
// 源代码文件绝对路径字符串长度（4字节）
// 源代码文件绝对路径字符串（不包括字符串结尾的0）
// 列表文件绝对路径字符串长度（4字节）
// 列表文件绝对路径字符串（不包括字符串结尾的0）
//
// 代码行数据库中元素的数量（4字节）
// 代码行数据库中的所有元素
//
// 符号表元素的数量（4字节）
// 符号表中的所有元素
//
if(dbg_file_name != NULL)
{
fp = fopen(dbg_file_name, "wb");
if(NULL == fp)
{
printf("无法打开调试信息文件 %s\n", dbg_file_name);
return 1;
}
// 魔数
fwrite(&dbg_file_magic, 1, sizeof(dbg_file_magic), fp);
// 版本号
fwrite(&dbg_file_version, 1, sizeof(dbg_file_version), fp);
// 源代码文件路径
write_string_to_binary_file(micro_file_name, fp);
// 列表文件路径
write_string_to_binary_file(list_file_name, fp);
// 代码行数据库中的所有元素
fwrite(&machine_code_line_count, 1, sizeof(machine_code_line_count), fp);
for(i=0; i<line_count; i++)
{
// 跳过没有产生机器码的代码行
if(0 == line_database[i].machine_code_count)
{
continue;
}
fwrite(&line_database[i].line_num, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].address, 1, sizeof(unsigned long), fp);
fwrite(&line_database[i].machine_code_count, 1, sizeof(int), fp);
fwrite(&line_database[i].flag, 1, sizeof(unsigned long), fp);
}
// 没有符号表。但是为了确保调试信息的格式能够被正确读取，必须写入符号表数量为 0
i = 0;
fwrite(&i, 1, sizeof(i), fp);
fclose(fp);
printf("生成调试信息文件 %s\n", dbg_file_name);
}
return 0;
}
microasm.exe 0 → 100644
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ram.asm 0 → 100644
浏览文件 @ cf6aa868
; 示例程序
.text
mov sp, 0xf8 ;初始化栈指针寄存器
;=======================================================
;安装中断向量，安装中断的过程是将各个中断服务程序的入口地址（首地址）保存到对应中断向量指向的存储单元中。
;中断向量本身是一个地址，它指向一个存储单元，该存储单元保存的就是某个中断服务程序的入口地址（起始地址）
;设中断向量列表的首地址为0xf8，即第一个中断向量是存储单元0xf8
;安装0号中断向量0xf8，0xf8中保存0号中断服务程序的入口地址
lea a, int_0
mov r0, 0xf8
mov [r0], a
;安装3号中断向量0xfb，0xfb中保存3号中断服务程序的入口地址
lea a, int_3
mov r0, 0xfb
mov [r0], a
;安装5号中断向量0xfd，0xfd中保存5号中断服务程序的入口地址
lea a, int_5
mov r0, 0xfd
mov [r0], a
;=======================================================
;主程序代码
mov a, -1
LOOPC:
mov r0, 1
add a, r0
jmp LOOPC
;=======================================================
;中断服务程序
;0号中断的服务程序
int_0:
mov a, 0x10
adc a, -1
iret
;3号中断的服务程序
int_3:
mov a, 0x13
or a, [r0]
sbb a, -1
iret
;5号中断的服务程序
int_5:
mov r2, 3
mov a, 1
and a, r2
iret
ram.bat 0 → 100644
浏览文件 @ cf6aa868
@echo off
dmasm.exe ram.asm -o ram.rxm -l ram.lst -g ram.dbg
pause
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浏览文件 @ cf6aa868
0001 ; 示例程序
0002
0003 .text
0004
0005 00 9C F8 mov sp, 0xf8 ;初始化栈指针寄存器
0006
0007 ;=======================================================
0008 ;安装中断向量，安装中断的过程是将各个中断服务程序的入口地址（首地址）保存到对应中断向量指向的存储单元中。
0009 ;中断向量本身是一个地址，它指向一个存储单元，该存储单元保存的就是某个中断服务程序的入口地址（起始地址）
0010 ;设中断向量列表的首地址为0xf8，即第一个中断向量是存储单元0xf8
0011
0012 ;安装0号中断向量0xf8，0xf8中保存0号中断服务程序的入口地址
0013 02 98 18 lea a, int_0
0014 04 8C F8 mov r0, 0xf8
0015 06 84 mov [r0], a
0016
0017
0018 ;安装3号中断向量0xfb，0xfb中保存3号中断服务程序的入口地址
0019 07 98 1D lea a, int_3
0020 09 8C FB mov r0, 0xfb
0021 0B 84 mov [r0], a
0022
0023
0024 ;安装5号中断向量0xfd，0xfd中保存5号中断服务程序的入口地址
0025 0C 98 23 lea a, int_5
0026 0E 8C FD mov r0, 0xfd
0027 10 84 mov [r0], a
0028
0029
0030 ;=======================================================
0031 ;主程序代码
0032
0033 11 7C FF mov a, -1
0034
0035 LOOPC:
0036 13 8C 01 mov r0, 1
0037 15 10 add a, r0
0038
0039 16 AC 13 jmp LOOPC
0040
0041
0042 ;=======================================================
0043 ;中断服务程序
0044 ;0号中断的服务程序
0045 int_0:
0046 18 7C 10 mov a, 0x10
0047 1A 2C FF adc a, -1
0048 1C F8 iret
0049
0050
0051 ;3号中断的服务程序
0052 int_3:
0053 1D 7C 13 mov a, 0x13
0054 1F 64 or a, [r0]
0055 20 4C FF sbb a, -1
0056 22 F8 iret
0057
0058
0059 ;5号中断的服务程序
0060 int_5:
0061 23 8E 03 mov r2, 3
0062 25 7C 01 mov a, 1
0063 27 52 and a, r2
0064 28 F8 iret
0065
ram.rxm 0 → 100644
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添加文件
readme.md 0 → 100644
浏览文件 @ cf6aa868
# 说明
基于 DM1000 的硬中断实现
# 原理图
![raw svg](Hardware-IRQ.dlsche.svg)
\ No newline at end of file
rom.bat 0 → 100644
浏览文件 @ cf6aa868
@echo off
microasm.exe rom.masm -o rom.rxm -l rom.lst -g rom.dbg
pause
\ No newline at end of file
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0001
0002
0003 ; 所有指令的第一条微指令地址必须是8的倍数
0004 ; 取指微指令，所有指令的第一步均为取指操作，都要执行该条微指令
0005 00 EF 3F F9 FF path [pc], ir
0006
0007 ; 填充空白指令 01-1f
0008 04 FF FF FF FF dup 31, null
0009
0010 ; add a, rx
0011 80 EF FF FA 7F path rx, w
0012 84 EF FF E4 99 path alu_add, a
0013 88 FF FF FF FF inc pc
0014
0015 ;查询硬中断请求，将低3位中断号与高5位中断向量基地址组合，得到8位中断向量（8位地址）
0016 ;该中断向量指向一个存储单元，该存储单元保存的就是中断服务程序的入口地址
0017 ;若允许中断且有中断请求，则微程序跳转到硬中断处理处执行
0018 8C AF FF FF FF ask_for_int
0019 90 CF FF FF FF reset upc
0020
0021 94 FF FF FF FF dup 3, null
0022
0023 ; add a, [rx]
0024 A0 EF F7 FA FF path rx, mar
0025 A4 EF FB F9 7F path [mar], w
0026 A8 EF FF E4 99 path alu_add, a
0027 AC FF FF FF FF inc pc
0028 B0 AF FF FF FF ask_for_int
0029 B4 CF FF FF FF reset upc
0030
0031 B8 FF FF FF FF dup 2, null
0032
0033 ; add a, symbol
0034 C0 FF FF FF FF inc pc
0035 C4 EF 77 F9 FF path [pc], mar
0036 C8 EF FB F9 7F path [mar], w
0037 CC EF FF E4 99 path alu_add, a
0038 D0 FF FF FF FF inc pc
0039 D4 AF FF FF FF ask_for_int
0040 D8 CF FF FF FF reset upc
0041
0042 DC FF FF FF FF dup 1, null
0043
0044 ; add a, immediate
0045 E0 FF FF FF FF inc pc
0046 E4 EF 7F F9 7F path [pc], w
0047 E8 EF FF E4 99 path alu_add, a
0048 EC FF FF FF FF inc pc
0049 F0 AF FF FF FF ask_for_int ;查询硬中断请求，若有请求，则转去执行硬中断预处理微程序
0050 F4 CF FF FF FF reset upc
0051
0052 F8 FF FF FF FF dup 2, null
0053
0054 ; adc a, rx
0055 100 EF FF FA 7F path rx, w
0056 104 EF FF E4 89 path alu_adc, a
0057 108 FF FF FF FF inc pc
0058 10C AF FF FF FF ask_for_int
0059 110 CF FF FF FF reset upc
0060
0061 114 FF FF FF FF dup 3, null
0062
0063 ; adc a, [rx]
0064 120 EF F7 FA FF path rx, mar
0065 124 EF FB F9 7F path [mar], w
0066 128 EF FF E4 89 path alu_adc, a
0067 12C FF FF FF FF inc pc
0068 130 AF FF FF FF ask_for_int
0069 134 CF FF FF FF reset upc
0070
0071 138 FF FF FF FF dup 2, null
0072
0073 ; adc a, symbol
0074 140 FF FF FF FF inc pc
0075 144 EF 77 F9 FF path [pc], mar
0076 148 EF FB F9 7F path [mar], w
0077 14C EF FF E4 89 path alu_adc, a
0078 150 FF FF FF FF inc pc
0079 154 AF FF FF FF ask_for_int
0080 158 CF FF FF FF reset upc
0081
0082 15C FF FF FF FF dup 1, null
0083
0084 ; adc a, immediate
0085 160 FF FF FF FF inc pc
0086 164 EF 7F F9 7F path [pc], w
0087 168 EF FF E4 89 path alu_adc, a
0088 16C FF FF FF FF inc pc
0089 170 AF FF FF FF ask_for_int
0090 174 CF FF FF FF reset upc
0091
0092 178 FF FF FF FF dup 2, null
0093
0094 ; sub a, rx
0095 180 EF FF FA 7F path rx, w
0096 184 EF FF E4 86 path alu_sub, a
0097 188 FF FF FF FF inc pc
0098 18C AF FF FF FF ask_for_int
0099 190 CF FF FF FF reset upc
0100
0101 194 FF FF FF FF dup 3, null
0102
0103 ; sub a, [rx]
0104 1A0 EF F7 FA FF path rx, mar
0105 1A4 EF FB F9 7F path [mar], w
0106 1A8 EF FF E4 86 path alu_sub, a
0107 1AC FF FF FF FF inc pc
0108 1B0 AF FF FF FF ask_for_int
0109 1B4 CF FF FF FF reset upc
0110
0111 1B8 FF FF FF FF dup 2, null
0112
0113 ; sub a, symbol
0114 1C0 FF FF FF FF inc pc
0115 1C4 EF 77 F9 FF path [pc], mar
0116 1C8 EF FB F9 7F path [mar], w
0117 1CC EF FF E4 86 path alu_sub, a
0118 1D0 FF FF FF FF inc pc
0119 1D4 AF FF FF FF ask_for_int
0120 1D8 CF FF FF FF reset upc
0121
0122 1DC FF FF FF FF dup 1, null
0123
0124 ; sub a, immediate
0125 1E0 FF FF FF FF inc pc
0126 1E4 EF 7F F9 7F path [pc], w
0127 1E8 EF FF E4 86 path alu_sub, a
0128 1EC FF FF FF FF inc pc
0129 1F0 AF FF FF FF ask_for_int
0130 1F4 CF FF FF FF reset upc
0131
0132 1F8 FF FF FF FF dup 2, null
0133
0134 ; sbb a, rx
0135 200 EF FF FA 7F path rx, w
0136 204 EF FF E4 96 path alu_sbb, a
0137 208 FF FF FF FF inc pc
0138 20C AF FF FF FF ask_for_int
0139 210 CF FF FF FF reset upc
0140
0141 214 FF FF FF FF dup 3, null
0142
0143 ; sbb a, [rx]
0144 220 EF F7 FA FF path rx, mar
0145 224 EF FB F9 7F path [mar], w
0146 228 EF FF E4 96 path alu_sbb, a
0147 22C FF FF FF FF inc pc
0148 230 AF FF FF FF ask_for_int
0149 234 CF FF FF FF reset upc
0150
0151 238 FF FF FF FF dup 2, null
0152
0153 ; sbb a, symbol
0154 240 FF FF FF FF inc pc
0155 244 EF 77 F9 FF path [pc], mar
0156 248 EF FB F9 7F path [mar], w
0157 24C EF FF E4 96 path alu_sbb, a
0158 250 FF FF FF FF inc pc
0159 254 AF FF FF FF ask_for_int
0160 258 CF FF FF FF reset upc
0161
0162 25C FF FF FF FF dup 1, null
0163
0164 ; sbb a, immediate
0165 260 FF FF FF FF inc pc
0166 264 EF 7F F9 7F path [pc], w
0167 268 EF FF E4 96 path alu_sbb, a
0168 26C FF FF FF FF inc pc
0169 270 AF FF FF FF ask_for_int
0170 274 CF FF FF FF reset upc
0171
0172 278 FF FF FF FF dup 2, null
0173
0174 ; and a, rx
0175 280 EF FF FA 7F path rx, w
0176 284 EF FF E4 BB path alu_and a
0177 288 FF FF FF FF inc pc
0178 28C AF FF FF FF ask_for_int
0179 290 CF FF FF FF reset upc
0180
0181 294 FF FF FF FF dup 3, null
0182
0183 ; and a, [rx]
0184 2A0 EF F7 FA FF path rx, mar
0185 2A4 EF FB F9 7F path [mar], w
0186 2A8 EF FF E4 BB path alu_and, a
0187 2AC FF FF FF FF inc pc
0188 2B0 AF FF FF FF ask_for_int
0189 2B4 CF FF FF FF reset upc
0190
0191 2B8 FF FF FF FF dup 2, null
0192
0193 ; and a, symbol
0194 2C0 FF FF FF FF inc pc
0195 2C4 EF 77 F9 FF path [pc], mar
0196 2C8 EF FB F9 7F path [mar], w
0197 2CC EF FF E4 BB path alu_and, a
0198 2D0 FF FF FF FF inc pc
0199 2D4 AF FF FF FF ask_for_int
0200 2D8 CF FF FF FF reset upc
0201
0202 2DC FF FF FF FF dup 1, null
0203
0204 ; and a, immediate
0205 2E0 FF FF FF FF inc pc
0206 2E4 EF 7F F9 7F path [pc], w
0207 2E8 EF FF E4 BB path alu_and, a
0208 2EC FF FF FF FF inc pc
0209 2F0 AF FF FF FF ask_for_int
0210 2F4 CF FF FF FF reset upc
0211
0212 2F8 FF FF FF FF dup 2, null
0213
0214 ; or a, rx
0215 300 EF FF FA 7F path rx, w
0216 304 EF FF E4 BE path alu_or a
0217 308 FF FF FF FF inc pc
0218 30C AF FF FF FF ask_for_int
0219 310 CF FF FF FF reset upc
0220
0221 314 FF FF FF FF dup 3, null
0222
0223 ; or a, [rx]
0224 320 EF F7 FA FF path rx, mar
0225 324 EF FB F9 7F path [mar], w
0226 328 EF FF E4 BE path alu_or, a
0227 32C FF FF FF FF inc pc
0228 330 AF FF FF FF ask_for_int
0229 334 CF FF FF FF reset upc
0230
0231 338 FF FF FF FF dup 2, null
0232
0233 ; or a, symbol
0234 340 FF FF FF FF inc pc
0235 344 EF 77 F9 FF path [pc], mar
0236 348 EF FB F9 7F path [mar], w
0237 34C EF FF E4 BE path alu_or, a
0238 350 FF FF FF FF inc pc
0239 354 AF FF FF FF ask_for_int
0240 358 CF FF FF FF reset upc
0241
0242 35C FF FF FF FF dup 1, null
0243
0244 ; or a, immediate
0245 360 FF FF FF FF inc pc
0246 364 EF 7F F9 7F path [pc], w
0247 368 EF FF E4 BE path alu_or, a
0248 36C FF FF FF FF inc pc
0249 370 AF FF FF FF ask_for_int
0250 374 CF FF FF FF reset upc
0251
0252 378 FF FF FF FF dup 2, null
0253
0254 ; mov a, rx
0255 380 EF FF FA BF path rx, a
0256 384 FF FF FF FF inc pc
0257 388 AF FF FF FF ask_for_int
0258 38C CF FF FF FF reset upc
0259
0260 390 FF FF FF FF dup 4, null
0261
0262 ; mov a, [rx]
0263 3A0 EF F7 FA FF path rx, mar
0264 3A4 EF FB F9 BF path [mar], a
0265 3A8 FF FF FF FF inc pc
0266 3AC AF FF FF FF ask_for_int
0267 3B0 CF FF FF FF reset upc
0268
0269 3B4 FF FF FF FF dup 3, null
0270
0271 ; mov a, symbol
0272 3C0 FF FF FF FF inc pc
0273 3C4 EF 77 F9 FF path [pc], mar
0274 3C8 EF FB F9 BF path [mar], a
0275 3CC FF FF FF FF inc pc
0276 3D0 AF FF FF FF ask_for_int
0277 3D4 CF FF FF FF reset upc
0278
0279 3D8 FF FF FF FF dup 2, null
0280
0281 ; mov a, immediate
0282 3E0 FF FF FF FF inc pc
0283 3E4 EF 7F F9 BF path [pc], a
0284 3E8 FF FF FF FF inc pc
0285 3EC AF FF FF FF ask_for_int
0286 3F0 CF FF FF FF reset upc
0287
0288 3F4 FF FF FF FF dup 3, null
0289
0290 ; mov rx, a
0291 400 EF FF B4 D0 path a, rx
0292 404 FF FF FF FF inc pc
0293 408 AF FF FF FF ask_for_int
0294 40C CF FF FF FF reset upc
0295
0296 410 FF FF FF FF dup 4, null
0297
0298 ; mov [rx], a
0299 420 EF F7 FA FF path rx, mar
0300 424 ED FB F4 D0 path a, [mar]
0301 428 FF FF FF FF inc pc
0302 42C AF FF FF FF ask_for_int
0303 430 CF FF FF FF reset upc
0304
0305 434 FF FF FF FF dup 3, null
0306
0307 ; mov symbol, a
0308 440 FF FF FF FF inc pc
0309 444 EF 77 F9 FF path [pc], mar
0310 448 ED FB F4 D0 path a, [mar]
0311 44C FF FF FF FF inc pc
0312 450 AF FF FF FF ask_for_int
0313 454 CF FF FF FF reset upc
0314
0315 458 FF FF FF FF dup 2, null
0316
0317 ; mov rx, immediate
0318 460 FF FF FF FF inc pc
0319 464 EF 7F B9 FF path [pc], rx
0320 468 FF FF FF FF inc pc
0321 46C AF FF FF FF ask_for_int
0322 470 CF FF FF FF reset upc
0323
0324 474 FF FF FF FF dup 3, null
0325
0326 ; 空白存储块
0327 480 FF FF FF FF dup 16, null
0328
0329 ; lea a, symbol
0330 4C0 FF FF FF FF inc pc
0331 4C4 EF 7F F9 BF path [pc], a
0332 4C8 FF FF FF FF inc pc
0333 4CC AF FF FF FF ask_for_int
0334 4D0 CF FF FF FF reset upc
0335
0336 4D4 FF FF FF FF dup 3, null
0337
0338 ;mov sp, immediate
0339 4E0 FF FF FF FF inc pc
0340 4E4 EF 7E F9 FF path [pc], sp
0341 4E8 FF FF FF FF inc pc
0342 4EC AF FF FF FF ask_for_int
0343 4F0 CF FF FF FF reset upc
0344
0345 4F4 FF FF FF FF dup 3, null
0346
0347 ; jc symbol
0348 500 FF FF FF FF inc pc
0349 504 FF 6F F9 FF path [pc], pc
0350 508 AF FF FF FF ask_for_int
0351 50C CF FF FF FF reset upc
0352
0353 510 FF FF FF FF dup 4, null
0354
0355 ; jz symbol
0356 520 FF FF FF FF inc pc
0357 524 FF 6F F9 FF path [pc], pc
0358 528 AF FF FF FF ask_for_int
0359 52C CF FF FF FF reset upc
0360
0361 530 FF FF FF FF dup 4, null
0362
0363 ; 填充空白指令
0364 540 FF FF FF FF dup 8, null
0365
0366 ; jmp symbol
0367 560 FF FF FF FF inc pc
0368 564 FF 6F F9 FF path [pc], pc
0369 568 AF FF FF FF ask_for_int
0370 56C CF FF FF FF reset upc
0371
0372 570 FF FF FF FF dup 4, null
0373
0374 ; in
0375 580 EF FF F0 BF path rin, a
0376 584 FF FF FF FF inc pc
0377 588 AF FF FF FF ask_for_int
0378 58C CF FF FF FF reset upc
0379
0380 590 FF FF FF FF dup 4, null
0381
0382 ; out
0383 5A0 EE FF F4 D0 path a, rout
0384 5A4 FF FF FF FF inc pc
0385 5A8 AF FF FF FF ask_for_int
0386 5AC CF FF FF FF reset upc
0387
0388 5B0 FF FF FF FF dup 4, null
0389
0390 ; int immediate
0391 5C0 FF FF FF FF inc pc
0392 5C4 EB 7F F9 FF path [pc], ia
0393 5C8 EF FF 72 FF path sp, csp
0394 5CC E7 FF FF FF path sp_inc, csp
0395 5D0 EF FE F8 FF path csp, sp
0396 5D4 EF F7 F2 FF path sp, mar
0397 5D8 FF FF FF FF inc pc
0398 5DC ED FB F3 FF path pc, [mar]
0399 5E0 EF F7 F1 FF path ia, mar
0400 5E4 EF EB F9 FF path [mar], pc
0401 5E8 CF FF FF FF reset upc
0402
0403 5EC FF FF FF FF dup 5, null
0404
0405 ;
0406 600 FF FF FF FF dup 16, null
0407
0408 ;=====================================================================
0409 ;子程序调用返回指令
0410 ; ret
0411 640 EF F7 F2 FF path sp, mar ;将堆栈指针（栈顶地址）传送到 MAR
0412 644 EF FF 72 FF path sp, csp ;
0413 648 E7 FF FF FF path sp_inc, csp ;
0414 64C EF FE F8 FF path csp, sp ;SP = SP + 1，出栈，更新栈顶
0415 650 EF EB F9 FF path [mar], pc ;将调用返回地址加载到PC，转移到调用处的下一条指令继续执行
0416 654 CF FF FF FF reset upc
0417
0418 658 FF FF FF FF dup 2, null
0419 ;=====================================================================
0420
0421 ; 填充空白指令
0422 660 FF FF FF FF dup 8, null
0423
0424 ; shr a
0425 680 EF FF D5 90 path alu_shr, a
0426 684 FF FF FF FF inc pc
0427 688 AF FF FF FF ask_for_int
0428 68C CF FF FF FF reset upc
0429
0430 690 FF FF FF FF dup 4, null
0431
0432 ; shl a
0433 6A0 EF FF D6 90 path alu_shl, a
0434 6A4 FF FF FF FF inc pc
0435 6A8 AF FF FF FF ask_for_int
0436 6AC CF FF FF FF reset upc
0437
0438 6B0 FF FF FF FF dup 4, null
0439
0440 ; rcr a
0441 6C0 EF FF E5 90 path alu_rcr, a
0442 6C4 FF FF FF FF inc pc
0443 6C8 AF FF FF FF ask_for_int
0444 6CC CF FF FF FF reset upc
0445
0446 6D0 FF FF FF FF dup 4, null
0447
0448 ; rcl a
0449 6E0 EF FF E6 90 path alu_rcl, a
0450 6E4 FF FF FF FF inc pc
0451 6E8 AF FF FF FF ask_for_int
0452 6EC CF FF FF FF reset upc
0453
0454 6F0 FF FF FF FF dup 4, null
0455
0456 ; nop
0457 700 FF FF FF FF inc pc
0458 704 CF FF FF FF reset upc
0459
0460 708 FF FF FF FF dup 6, null
0461
0462 ; not a
0463 720 EF FF F4 B0 path alu_not, a
0464 724 FF FF FF FF inc pc
0465 728 AF FF FF FF ask_for_int
0466 72C CF FF FF FF reset upc
0467
0468 730 FF FF FF FF dup 4, null
0469
0470 ; call symbol
0471 740 FF FF FF FF inc pc
0472 744 EF 7D F9 FF path [pc], asr
0473 748 EF FF 72 FF path sp, csp
0474 74C EF FF FF FF path sp_dec, csp
0475 750 EF FE F8 FF path csp, sp
0476 754 EF F7 F2 FF path sp, mar
0477 758 FF FF FF FF inc pc
0478 75C ED FB F3 FF path pc, [mar]
0479 760 EF EF F7 FF path asr, pc
0480 764 AF FF FF FF ask_for_int
0481 768 CF FF FF FF reset upc
0482
0483 76C FF FF FF FF dup 5, null
0484
0485 ;======================================================================
0486 ; 硬中断处理微程序。
0487 ; 硬中断处理完成返回地址入栈，然后加载中断服务程序入口地址到PC的工作。
0488
0489 ; 中断返回地址是下一条指令的地址，这是因为当前指令已经执行完毕，是在该指令执行完成后才查询到中断请求的，
0490 ; 因此，中断返回后应该从当前指令的下一条指令开始执行
0491
0492 ; sp减1，指向新的栈顶，为入栈对象分配一个存储单元。入栈时，栈顶向地址方向生长
0493 780 EF FF 72 FF path sp, csp ;将栈指针寄存器sp的值传送到csp计数器
0494 784 EF FF FF FF path sp_dec, csp ;计数器csp减1
0495 788 EF FE F8 FF path csp, sp ;将减计数结果写回sp，完成栈指针sp-1操作，为返回地址入栈做准备
0496
0497 ; 中断返回地址入栈
0498 78C EF F7 F2 FF path sp, mar ;sp栈指针寄存器内容传送到地址寄存器mar
0499 790 ED FB F3 FF path pc, [mar] ;将返回地址PC入栈
0500
0501 ; 根据中断号获取中断服务程序入口地址
0502 794 EF FF FB FF inta1 ;发出第一个中断应答信号，中断控制器保存最高优先级中断请求对应的编号（0~7）
0503 798 EB FF FC FF inta2 ;发出第二个中断应答信号，将响应中断的终端号读入IA寄存器中，并清除响应的中断请求，避免重复响应
0504
0505 ; 由中断号（中断向量偏移地址）与中断向量基地址0xf8相加得到当前响应的中断向量
0506 79C EF F7 F1 FF path int_ia, mar ;将中断向量（ia寄存器的内容）传入mar
0507 7A0 EF EB F9 FF path [mar], pc ;读出中断向量中的内容（中断服务程序入口地址），将其加载到PC，转去执行中断服务程序
0508 7A4 CF FF FF FF reset upc
0509
0510 7A8 FF FF FF FF dup 6, null
0511
0512 ;======================================================================
0513 ;中断返回指令
0514 ; iret
0515 ;中断返回就是出栈过程，将栈顶指针sp指向的存储单元内的返回地址加载到PC，实现中断返回
0516 ;与此同时，sp加1，指向新的栈顶
0517 ; 后进先出
0518
0519 ; 中断返回地址出栈，将sp指向存储单元保存的返回地址加载到PC中
0520 7C0 EF F7 F2 FF path sp, mar
0521 7C4 EF EB F9 FF path [mar], pc
0522
0523 ; 出栈时，sp加1，栈顶向高地址方向生长
0524 7C8 EF FF 72 FF path sp, csp ;sp传入csp计数器
0525 7CC E7 FF FF FF path sp_inc, csp ;csp计数器加1
0526 7D0 EF FE F8 FF path csp, sp ;将csp加1后的结果写入sp，sp指向新的栈顶
0527
0528 ;发出中断返回命令，清除已经服务完的硬中断标志
0529 7D4 EF FF FD FF eoi
0530
0531 ; 查询中断请求，若存在，则继续响应中断
0532 7D8 AF FF FF FF ask_for_int
0533 7DC CF FF FF FF reset upc
rom.masm 0 → 100644
浏览文件 @ cf6aa868
; 所有指令的第一条微指令地址必须是8的倍数
; 取指微指令，所有指令的第一步均为取指操作，都要执行该条微指令
path [pc], ir
; 填充空白指令 01-1f
dup 31, null
; add a, rx
path rx, w
path alu_add, a
inc pc
;查询硬中断请求，将低3位中断号与高5位中断向量基地址组合，得到8位中断向量（8位地址）
;该中断向量指向一个存储单元，该存储单元保存的就是中断服务程序的入口地址
;若允许中断且有中断请求，则微程序跳转到硬中断处理处执行
ask_for_int
reset upc
dup 3, null
; add a, [rx]
path rx, mar
path [mar], w
path alu_add, a
inc pc
ask_for_int
reset upc
dup 2, null
; add a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_add, a
inc pc
ask_for_int
reset upc
dup 1, null
; add a, immediate
inc pc
path [pc], w
path alu_add, a
inc pc
ask_for_int ;查询硬中断请求，若有请求，则转去执行硬中断预处理微程序
reset upc
dup 2, null
; adc a, rx
path rx, w
path alu_adc, a
inc pc
ask_for_int
reset upc
dup 3, null
; adc a, [rx]
path rx, mar
path [mar], w
path alu_adc, a
inc pc
ask_for_int
reset upc
dup 2, null
; adc a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_adc, a
inc pc
ask_for_int
reset upc
dup 1, null
; adc a, immediate
inc pc
path [pc], w
path alu_adc, a
inc pc
ask_for_int
reset upc
dup 2, null
; sub a, rx
path rx, w
path alu_sub, a
inc pc
ask_for_int
reset upc
dup 3, null
; sub a, [rx]
path rx, mar
path [mar], w
path alu_sub, a
inc pc
ask_for_int
reset upc
dup 2, null
; sub a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_sub, a
inc pc
ask_for_int
reset upc
dup 1, null
; sub a, immediate
inc pc
path [pc], w
path alu_sub, a
inc pc
ask_for_int
reset upc
dup 2, null
; sbb a, rx
path rx, w
path alu_sbb, a
inc pc
ask_for_int
reset upc
dup 3, null
; sbb a, [rx]
path rx, mar
path [mar], w
path alu_sbb, a
inc pc
ask_for_int
reset upc
dup 2, null
; sbb a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_sbb, a
inc pc
ask_for_int
reset upc
dup 1, null
; sbb a, immediate
inc pc
path [pc], w
path alu_sbb, a
inc pc
ask_for_int
reset upc
dup 2, null
; and a, rx
path rx, w
path alu_and a
inc pc
ask_for_int
reset upc
dup 3, null
; and a, [rx]
path rx, mar
path [mar], w
path alu_and, a
inc pc
ask_for_int
reset upc
dup 2, null
; and a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_and, a
inc pc
ask_for_int
reset upc
dup 1, null
; and a, immediate
inc pc
path [pc], w
path alu_and, a
inc pc
ask_for_int
reset upc
dup 2, null
; or a, rx
path rx, w
path alu_or a
inc pc
ask_for_int
reset upc
dup 3, null
; or a, [rx]
path rx, mar
path [mar], w
path alu_or, a
inc pc
ask_for_int
reset upc
dup 2, null
; or a, symbol
inc pc
path [pc], mar
path [mar], w
path alu_or, a
inc pc
ask_for_int
reset upc
dup 1, null
; or a, immediate
inc pc
path [pc], w
path alu_or, a
inc pc
ask_for_int
reset upc
dup 2, null
; mov a, rx
path rx, a
inc pc
ask_for_int
reset upc
dup 4, null
; mov a, [rx]
path rx, mar
path [mar], a
inc pc
ask_for_int
reset upc
dup 3, null
; mov a, symbol
inc pc
path [pc], mar
path [mar], a
inc pc
ask_for_int
reset upc
dup 2, null
; mov a, immediate
inc pc
path [pc], a
inc pc
ask_for_int
reset upc
dup 3, null
; mov rx, a
path a, rx
inc pc
ask_for_int
reset upc
dup 4, null
; mov [rx], a
path rx, mar
path a, [mar]
inc pc
ask_for_int
reset upc
dup 3, null
; mov symbol, a
inc pc
path [pc], mar
path a, [mar]
inc pc
ask_for_int
reset upc
dup 2, null
; mov rx, immediate
inc pc
path [pc], rx
inc pc
ask_for_int
reset upc
dup 3, null
; 空白存储块
dup 16, null
; lea a, symbol
inc pc
path [pc], a
inc pc
ask_for_int
reset upc
dup 3, null
;mov sp, immediate
inc pc
path [pc], sp
inc pc
ask_for_int
reset upc
dup 3, null
; jc symbol
inc pc
path [pc], pc
ask_for_int
reset upc
dup 4, null
; jz symbol
inc pc
path [pc], pc
ask_for_int
reset upc
dup 4, null
; 填充空白指令
dup 8, null
; jmp symbol
inc pc
path [pc], pc
ask_for_int
reset upc
dup 4, null
; in
path rin, a
inc pc
ask_for_int
reset upc
dup 4, null
; out
path a, rout
inc pc
ask_for_int
reset upc
dup 4, null
; int immediate
inc pc
path [pc], ia
path sp, csp
path sp_inc, csp
path csp, sp
path sp, mar
inc pc
path pc, [mar]
path ia, mar
path [mar], pc
reset upc
dup 5, null
;
dup 16, null
;=====================================================================
;子程序调用返回指令
; ret
path sp, mar ;将堆栈指针（栈顶地址）传送到 MAR
path sp, csp ;
path sp_inc, csp ;
path csp, sp ;SP = SP + 1，出栈，更新栈顶
path [mar], pc ;将调用返回地址加载到PC，转移到调用处的下一条指令继续执行
reset upc
dup 2, null
;=====================================================================
; 填充空白指令
dup 8, null
; shr a
path alu_shr, a
inc pc
ask_for_int
reset upc
dup 4, null
; shl a
path alu_shl, a
inc pc
ask_for_int
reset upc
dup 4, null
; rcr a
path alu_rcr, a
inc pc
ask_for_int
reset upc
dup 4, null
; rcl a
path alu_rcl, a
inc pc
ask_for_int
reset upc
dup 4, null
; nop
inc pc
reset upc
dup 6, null
; not a
path alu_not, a
inc pc
ask_for_int
reset upc
dup 4, null
; call symbol
inc pc
path [pc], asr
path sp, csp
path sp_dec, csp
path csp, sp
path sp, mar
inc pc
path pc, [mar]
path asr, pc
ask_for_int
reset upc
dup 5, null
;======================================================================
; 硬中断处理微程序。
; 硬中断处理完成返回地址入栈，然后加载中断服务程序入口地址到PC的工作。
; 中断返回地址是下一条指令的地址，这是因为当前指令已经执行完毕，是在该指令执行完成后才查询到中断请求的，
; 因此，中断返回后应该从当前指令的下一条指令开始执行
; sp减1，指向新的栈顶，为入栈对象分配一个存储单元。入栈时，栈顶向地址方向生长
path sp, csp ;将栈指针寄存器sp的值传送到csp计数器
path sp_dec, csp ;计数器csp减1
path csp, sp ;将减计数结果写回sp，完成栈指针sp-1操作，为返回地址入栈做准备
; 中断返回地址入栈
path sp, mar ;sp栈指针寄存器内容传送到地址寄存器mar
path pc, [mar] ;将返回地址PC入栈
; 根据中断号获取中断服务程序入口地址
inta1 ;发出第一个中断应答信号，中断控制器保存最高优先级中断请求对应的编号（0~7）
inta2 ;发出第二个中断应答信号，将响应中断的终端号读入IA寄存器中，并清除响应的中断请求，避免重复响应
; 由中断号（中断向量偏移地址）与中断向量基地址0xf8相加得到当前响应的中断向量
path int_ia, mar ;将中断向量（ia寄存器的内容）传入mar
path [mar], pc ;读出中断向量中的内容（中断服务程序入口地址），将其加载到PC，转去执行中断服务程序
reset upc
dup 6, null
;======================================================================
;中断返回指令
; iret
;中断返回就是出栈过程，将栈顶指针sp指向的存储单元内的返回地址加载到PC，实现中断返回
;与此同时，sp加1，指向新的栈顶
; 后进先出
; 中断返回地址出栈，将sp指向存储单元保存的返回地址加载到PC中
path sp, mar
path [mar], pc
; 出栈时，sp加1，栈顶向高地址方向生长
path sp, csp ;sp传入csp计数器
path sp_inc, csp ;csp计数器加1
path csp, sp ;将csp加1后的结果写入sp，sp指向新的栈顶
;发出中断返回命令，清除已经服务完的硬中断标志
eoi
; 查询中断请求，若存在，则继续响应中断
ask_for_int
reset upc
rom.rxm 0 → 100644
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添加文件
uPC_NEXT.dlsche 0 → 100644
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添加文件
uPC_NEXT.dlsche.svg 0 → 100644
浏览文件 @ cf6aa868
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="656">^A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="656">2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="686">^A1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="686">23</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="716">^A2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="716">21</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="746">^A3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="746">19</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="806">^B0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="804">1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="836">^B1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="835">22</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="866">^B2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="865">20</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="896">^B3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="895">18</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="966">S0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="964">6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="996">S1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="995">5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1026" y2="1026"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1026">S2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1025">4</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1055">3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1116">CN</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1117">7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1570" y="1146">M</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1147">8</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="926">^G</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="926">17</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="836">14</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="806">CN4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="806">16</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="746">13</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="716">^F2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="716">11</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="686">^F1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="686">10</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="656">^F0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1715" y="655">9</text>
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<circle cx="1691" cy="746" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="896" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="927" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1604" y="596">U1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1547" y="1212">74LS181</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1356" y2="1356"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1356">^A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="1356">2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1386" y2="1386"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1386">^A1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="1386">23</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1416" y2="1416"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1416">^A2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="1416">21</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1446" y2="1446"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1446">^A3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="1446">19</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1506" y2="1506"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1506">^B0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="1504">1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1536" y2="1536"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1536">^B1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="1535">22</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1566" y2="1566"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1566">^B2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="1565">20</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="1596" y2="1596"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="1596">^B3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="1595">18</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1666" y2="1666"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1666">S0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1664">6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1696" y2="1696"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1696">S1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1695">5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1726" y2="1726"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1726">S2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1725">4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1756" y2="1756"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1756">S3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1755">3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1816" y2="1816"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="1816">CN</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1817">7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="1846" y2="1846"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1570" y="1846">M</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="1847">8</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1626" y2="1626"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1626">^G</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1626">17</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1596" y2="1596"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1596">^P</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1596">15</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1687" x2="1737" y1="1536" y2="1536"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1536">AEQB</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1536">14</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1687" x2="1737" y1="1506" y2="1506"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1506">CN4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1506">16</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1446" y2="1446"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1446">^F3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1446">13</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1416" y2="1416"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1416">^F2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1416">11</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1386" y2="1386"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1386">^F1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="1386">10</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="1356" y2="1356"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="1356">^F0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1715" y="1355">9</text>
<circle cx="1532" cy="1596" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1531" cy="1416" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1531" cy="1506" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1531" cy="1446" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1531" cy="1385" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1532" cy="1566" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1532" cy="1356" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1531" cy="1536" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="1357" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1692" cy="1387" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1692" cy="1416" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="1446" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="1596" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<circle cx="1691" cy="1627" fill="#ffffff" fill-opacity="0.5" r="4" stroke="#000000" stroke-width="5"/>
<rect fill="#ffffff" fill-opacity="0.5" height="550" stroke="#000000" stroke-width="5" width="150" x="1537" y="1316"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1604" y="1296">U2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1547" y="1912">74LS181</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2096" y2="2096"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2096">^A0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="2096">2</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2126" y2="2126"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2126">^A1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="2126">23</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2156" y2="2156"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2156">^A2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="2156">21</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2186" y2="2186"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2186">^A3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1519" y="2186">19</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2246" y2="2246"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2246">^B0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1506" y="2244">1</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2276" y2="2276"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2276">^B1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="2275">22</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2306" y2="2306"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2306">^B2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="2305">20</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1527" x2="1487" y1="2336" y2="2336"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1590" y="2336">^B3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1520" y="2335">18</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2406" y2="2406"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="2406">S0</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2404">6</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2436" y2="2436"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="2436">S1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2435">5</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2466" y2="2466"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="2466">S2</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2465">4</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2496" y2="2496"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="2496">S3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2495">3</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2556" y2="2556"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1580" y="2556">CN</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2557">7</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1537" x2="1487" y1="2586" y2="2586"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1570" y="2586">M</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="1507" y="2587">8</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="2366" y2="2366"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="2366">^G</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="2366">17</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1697" x2="1737" y1="2336" y2="2336"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="2336">^P</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="2336">15</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1687" x2="1737" y1="2276" y2="2276"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="2276">AEQB</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="2276">14</text>
<line stroke="#000000" stroke-linecap="round" stroke-width="5" x1="1687" x2="1737" y1="2246" y2="2246"/>
<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="middle" x="1654" y="2246">CN4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1702" y="2246">16</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3466">B0</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3486">B1</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3506">B2</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3546">B4</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3566">B5</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3586">B6</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3626">B8</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3666">B10</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3686">B11</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3706">B12</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3726">B13</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="607" y="3766">B15</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="2307" y="1726">uPC_Next0</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="2307" y="1746">uPC_Next1</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="15" font-weight="400" text-anchor="start" x="2307" y="1766">uPC_Next2</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="宋体" font-size="90" font-weight="400" text-anchor="start" x="67" y="3666">加数4</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="1727" y="236">微程序加计数模块</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="宋体" font-size="90" font-weight="400" text-anchor="start" x="1767" y="456">uPC+4指向下一条微指令</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="67" y="3346">CONSTANT1</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="35" font-weight="400" text-anchor="start" x="147" y="936">运算方式控制信号：无进位加法</text>
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