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CU.dlsche
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CU.dlsche.svg
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......@@ -811,10 +811,6 @@
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="409" y="1894">复位uPC，执行第一条（地址为0）微指令，完成取指令功能</text>
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......@@ -823,7 +819,7 @@
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<text alignment-baseline="after-edge" fill="#000000" font-family="Times New Roman" font-size="65" font-weight="700" text-anchor="start" x="499" y="2244">uPC_NEXT</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="65" font-weight="700" text-anchor="start" x="499" y="2244">uPC_NEXT</text>
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......@@ -991,7 +987,7 @@
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1419" y="2304">UPC_NEXT_GATE</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1569" y="2294">uPC_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1559" y="2794">BUS_TRANS16</text>
......@@ -1209,7 +1205,7 @@
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1589" y="934">IR_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1499" y="934">IR_uAddress_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1559" y="1414">BUS_TRANS16</text>
......@@ -1349,7 +1345,7 @@
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<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1379" y="1514">UPC_RESET_GATE</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="40" font-weight="700" text-anchor="start" x="1499" y="1504">IR_Fetch_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1559" y="1994">BUS_TRANS16</text>
......@@ -1791,6 +1787,10 @@
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="2829" y="1674">REG_EN8</text>
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......
DM1000.dlsche
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DM1000.dlsche.svg
浏览文件 @ bfdfa835
......@@ -93,7 +93,7 @@
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<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="180" font-weight="700" text-anchor="start" x="5779" y="303">ALU</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="5779" y="303">ALU</text>
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......@@ -167,7 +167,7 @@
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<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="6999" y="243">REG</text>
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......@@ -267,7 +267,7 @@
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......@@ -291,21 +291,17 @@
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......@@ -319,6 +315,10 @@
<text alignment-baseline="central" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="4281" y="693">PC_ADD</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="2159" y="3333">MEM</text>
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......@@ -385,30 +385,28 @@
<text alignment-baseline="after-edge" fill="#000080" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1129" y="1693">Key = A</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1109" y="4023">CLK</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="180" font-weight="700" text-anchor="start" x="6029" y="2803">CU</text>
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......@@ -927,10 +909,6 @@
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......@@ -939,6 +917,10 @@
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......@@ -1183,6 +1165,102 @@
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="5009" y="3313">BUS_TRANS8</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="1489" y="3843">LTri_Gate</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="微软雅黑" font-size="25" font-weight="700" text-anchor="start" x="1089" y="4083">100Hz</text>
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PC.dlsche
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PC.dlsche.svg
浏览文件 @ bfdfa835
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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="1048" y="1216">低电平，PC加载新的地址，指令转移</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="150" font-weight="700" text-anchor="start" x="358" y="296">程序计数器PC模块</text>
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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="1046" y="1214">低电平，PC加载新的地址，指令转移</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="微软雅黑" font-size="150" font-weight="700" text-anchor="start" x="356" y="294">程序计数器PC模块</text>
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<circle cx="1898" cy="706" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1956" cy="794" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1938" cy="766" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1976" cy="824" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1996" cy="854" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="586" cy="1244" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
<circle cx="1998" cy="856" fill="#0000ff" r="8" stroke="#0000ff" stroke-width="5"/>
</svg>
REG.dlsche
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REG.dlsche.svg
浏览文件 @ bfdfa835
......@@ -965,7 +965,7 @@
<circle cx="1126" cy="4284" fill="#ffffff" r="5" stroke="#000000" stroke-width="5"/>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="45" font-weight="700" text-anchor="start" x="1201" y="3954">ST</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="45" font-weight="700" text-anchor="start" x="1201" y="3954">SP</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1181" y="4404">REG_EN8</text>
......@@ -1887,7 +1887,7 @@
<circle cx="1806" cy="4284" fill="none" r="5" 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="1841" y="3964">ST_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1841" y="3964">SP_gate</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" x="1811" y="4374">BUS_TRANS8</text>
......
dmasm.c
浏览文件 @ bfdfa835
......@@ -124,7 +124,7 @@ 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* st_register_keyword = "st";
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
......@@ -241,7 +241,7 @@ enum
,OT_REGISTER_R3_INDIRECT // [r3]
,OT_IMMEDIATE // 立即数
,OT_SYMBOL // 符号
,OT_REGISTER_ST // 堆栈寄存器
,OT_REGISTER_SP // 堆栈指针寄存器
};
// 得到指令操作数的类型
......@@ -285,9 +285,9 @@ unsigned long get_operand_type(const char* op)
{
op_type = OT_REGISTER_R3_INDIRECT;
}
else if (stricmp(op, st_register_keyword) == 0)
else if (stricmp(op, sp_register_keyword) == 0)
{
op_type = OT_REGISTER_ST;
op_type = OT_REGISTER_SP;
}
else if(is_immediate(op))
{
......@@ -422,9 +422,9 @@ void parse_mov(int line_num)
machine_code[machine_code_address] = get_machine_code_from_immediate(op2);
machine_code_address++;
}
else if (OT_REGISTER_ST == op1_type && OT_IMMEDIATE == op2_type)
else if (OT_REGISTER_SP == op1_type && OT_IMMEDIATE == op2_type)
{
// mov st, immediate
// mov sp, immediate
machine_code[machine_code_address] = 0x9c;
machine_code_address++;
......@@ -1581,7 +1581,7 @@ struct KEYWORD_FUNCTION_ENTRY keyword_function_table[] =
,{ &r2_register_indirect_keyword, NULL }
,{ &r3_register_indirect_keyword, NULL }
,{ &a_register_keyword, NULL }
,{ &st_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。
......
dmasm.exe
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microasm.c
浏览文件 @ bfdfa835
......@@ -52,7 +52,7 @@ 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* st_register_keyword = "st";
const char* sp_register_keyword = "sp";
const char* ia_register_keyword = "ia";
const char* ir_register_keyword = "ir";
const char* flag_register_keyword = "flag";
......@@ -82,12 +82,12 @@ const char* alu_rcl_keyword = "alu_rcl";
const char* alu_not_keyword = "alu_not";
const char* st_add_keyword = "st_add";
const char* st_minus_keyword = "st_minus";
const char* sp_inc_keyword = "sp_inc";
const char* sp_dec_keyword = "sp_dec";
const char* int_number_keyword = "int_number"; // 中断号
const char* int_ia_keyword = "int_ia";
const char* int_pc_keyword = "int_pc";
const char* int_pc_keyword = "[int_pc]";
// 访问主存或外设的操作数
const char* pc_main_memory_keyword = "[pc]";
......@@ -177,29 +177,29 @@ struct PATH_INSTRUCTION_OPERAND_ENTRY path_operand_table[] =
,{ &alu_aout_keyword, &mar_main_memory_keyword, 0xd0f4fbec } // path alu_aout, [mar]
,{ &pc_main_memory_keyword, &pc_register_keyword, 0xfff96fef } // path [pc], pc
,{ &pc_inc_main_memory_keyword, &pc_register_keyword, 0xfff96fff } // path [+pc], pc 读出PC指向主存单元的内容，同时允许PC加1，主要用在jz和jc指令中
,{ &pc_register_keyword, &st_register_keyword, 0xfff3feef } // path pc, st
,{ &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 } // 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, &st_register_keyword, 0xfff97eef } // path [pc], st 执行后pc应加1指向下一条指令
,{ &pc_main_memory_keyword, &sp_register_keyword, 0xfff97eef } // path [pc], sp 执行后pc应加1指向下一条指令
,{ &st_register_keyword, &mar_register_keyword, 0xfff2f7ef } // path st, mar
,{ &st_register_keyword, &cst_counter_keyword, 0xff72ffef } // path st, cst
,{ &sp_register_keyword, &mar_register_keyword, 0xfff2f7ef } // path sp, mar
,{ &sp_register_keyword, &cst_counter_keyword, 0xff72ffef } // path sp, cst
,{ &pc_main_memory_keyword, &ia_register_keyword, 0xfff97feb } // path [pc], ia 执行后pc应加1指向下一条指令
,{ &pc_main_memory_keyword, &asr_register_keyword, 0xfff97def } // path [pc], asr
,{ &cst_counter_keyword, &mar_register_keyword, 0xfff8f7ef } // path cst, mar
,{ &cst_counter_keyword, &st_register_keyword, 0xfff8feef } // path cst, st
,{ &cst_counter_keyword, &sp_register_keyword, 0xfff8feef } // path cst, sp
,{ &st_add_keyword, &cst_counter_keyword, 0xffffffe7 } // path st_add, cst
,{ &st_minus_keyword, &cst_counter_keyword, 0xffffffef } // path st_minus, cst
,{ &sp_inc_keyword, &cst_counter_keyword, 0xffffffe7 } // path st_inc, cst
,{ &sp_dec_keyword, &cst_counter_keyword, 0xffffffef } // path st_dec, cst
,{ &pc_register_keyword, &mar_main_memory_keyword, 0xfff3fbed } // path pc, [mar] 将pc值写入mar指向的内存
,{ &asr_register_keyword, &pc_register_keyword, 0xfff7efef } // path asr, pc
,{ &st_register_keyword, &asr_register_keyword, 0xfff2fdef } // path st, asr
,{ &sp_register_keyword, &asr_register_keyword, 0xfff2fdef } // path sp, asr
,{ &int_number_keyword, &ia_register_keyword, 0xfffbffeb } // path int_number, ia 将中断号给ia寄存器
,{ &int_ia_keyword, &pc_register_keyword, 0xfff1dfef } // path int_ia, pc
......
microasm.exe
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ram.asm
浏览文件 @ bfdfa835
; 示例程序
.text
mov r0, 16
mov a, num
add a, r0
mov sp, 0xf8 ;初始化堆栈指针寄存器
mov r0, 16 ;将立即数16存入寄存器r0
mov a, num ;将标号num指定的存储单元内容复制到累加器a中
add a, r0 ;将累加器a与寄存器r0相加，结果写回a中
Endless_Loop:
jmp Endless_Loop ;死循环
......
ram.dbg
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ram.lst
浏览文件 @ bfdfa835
0001 ; 示例程序
0002
0003 .text
0004
0005 00 8C 10 mov r0, 16
0006 02 78 07 mov a, num
0007 04 10 add a, r0
0004 00 9C F8 mov sp, 0xf8 ;初始化堆栈指针寄存器
0005 02 8C 10 mov r0, 16 ;将立即数16存入寄存器r0
0006 04 78 09 mov a, num ;将标号num指定的存储单元内容复制到累加器a中
0007 06 10 add a, r0 ;将累加器a与寄存器r0相加，结果写回a中
0008
0009 Endless_Loop:
0010 05 AC 05 jmp Endless_Loop ;ѭ
0010 07 AC 07 jmp Endless_Loop ;死循环
0011
0012 .data
0013
0014 07 FF num: -1
0014 09 FF num: -1
ram.rxm
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rom.dbg
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rom.lst
浏览文件 @ bfdfa835
......@@ -8,16 +8,16 @@
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 8C CF FF FF FF reset upc
0011 80 EF FF FA 7F path rx, w ;将寄存器 R 的内容传送到工作寄存器 W 中，R 的内容不变
0012 84 EF FF E4 99 path alu_add, a ;累加器 A 与工作寄存器 W 进行无进位加运算，结果写回 A 中，即A=A+W
0013 88 FF FF FF FF inc pc ;PC 加1，指向下一个字节单元
0014 8C CF FF FF FF reset upc ;uPC 寄存器复位为0，指向第一条微指令，该微指令完成取指令功能
0015
0016 90 FF FF FF FF dup 4, null
0017
0018 ; add a, [rx]
0019 A0 EF F7 FA FF path rx, mar
0020 A4 EF FB F9 7F path [mar], w
0019 A0 EF F7 FA FF path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR，R 的内容不变
0020 A4 EF FB F9 7F path [mar], w ;读出地址寄存器 MAR 指定存储单元的内容并写入工作寄存器 W 中
0021 A8 EF FF E4 99 path alu_add, a
0022 AC FF FF FF FF inc pc
0023 B0 CF FF FF FF reset upc
......@@ -26,7 +26,7 @@
0026
0027 ; add a, symbol
0028 C0 FF FF FF FF inc pc
0029 C4 EF 77 F9 FF path [pc], mar
0029 C4 EF 77 F9 FF path [pc], mar ;读出 PC 指定存储单元的内容并写入地址寄存器 MAR
0030 C8 EF FB F9 7F path [mar], w
0031 CC EF FF E4 99 path alu_add, a
0032 D0 FF FF FF FF inc pc
......@@ -36,7 +36,7 @@
0036
0037 ; add a, immediate
0038 E0 FF FF FF FF inc pc
0039 E4 EF 7F F9 7F path [pc], w
0039 E4 EF 7F F9 7F path [pc], w ;读出 PC 指定存储单元的内容并写入工作寄存器 W
0040 E8 EF FF E4 99 path alu_add, a
0041 EC FF FF FF FF inc pc
0042 F0 CF FF FF FF reset upc
......@@ -45,7 +45,7 @@
0045
0046 ; adc a, rx
0047 100 EF FF FA 7F path rx, w
0048 104 EF FF E4 89 path alu_adc, a
0048 104 EF FF E4 89 path alu_adc, a ;累加器 A 与工作寄存器 W 进行带进位的加法运算，结果写回 A 中，即A=A+W+1
0049 108 FF FF FF FF inc pc
0050 10C CF FF FF FF reset upc
0051
......@@ -81,7 +81,7 @@
0081
0082 ; sub a, rx
0083 180 EF FF FA 7F path rx, w
0084 184 EF FF E4 86 path alu_sub, a
0084 184 EF FF E4 86 path alu_sub, a ;累加器 A 减 W 进行减法运算，结果写回 A 中，即A=A-W
0085 188 FF FF FF FF inc pc
0086 18C CF FF FF FF reset upc
0087
......@@ -117,7 +117,7 @@
0117
0118 ; sbb a, rx
0119 200 EF FF FA 7F path rx, w
0120 204 EF FF E4 96 path alu_sbb, a
0120 204 EF FF E4 96 path alu_sbb, a ;累加器 A 与工作寄存器 W 进行带进位的减法运算，结果写回 A 中，即A=A-W-1
0121 208 FF FF FF FF inc pc
0122 20C CF FF FF FF reset upc
0123
......@@ -153,7 +153,7 @@
0153
0154 ; and a, rx
0155 280 EF FF FA 7F path rx, w
0156 284 EF FF E4 BB path alu_and a
0156 284 EF FF E4 BB path alu_and a ;A = A & W，A与W进行按位与运算
0157 288 FF FF FF FF inc pc
0158 28C CF FF FF FF reset upc
0159
......@@ -189,7 +189,7 @@
0189
0190 ; or a, rx
0191 300 EF FF FA 7F path rx, w
0192 304 EF FF E4 BE path alu_or a
0192 304 EF FF E4 BE path alu_or a ;A = A | W，A与W进行按位或运算
0193 308 FF FF FF FF inc pc
0194 30C CF FF FF FF reset upc
0195
......@@ -224,15 +224,15 @@
0224 374 FF FF FF FF dup 3, null
0225
0226 ; mov a, rx
0227 380 EF FF FA BF path rx, a
0227 380 EF FF FA BF path rx, a ;将寄存器 R 的内容传送到累加器 A 中
0228 384 FF FF FF FF inc pc
0229 388 CF FF FF FF reset upc
0230
0231 38C FF FF FF FF dup 5, null
0232
0233 ; mov a, [rx]
0234 3A0 EF F7 FA FF path rx, mar
0235 3A4 EF FB F9 BF path [mar], a
0234 3A0 EF F7 FA FF path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR 中
0235 3A4 EF FB F9 BF path [mar], a ;将地址寄存器MAR指定存储单元的内容传送到累加器 A 中
0236 3A8 FF FF FF FF inc pc
0237 3AC CF FF FF FF reset upc
0238
......@@ -240,7 +240,7 @@
0240
0241 ; mov a, symbol
0242 3C0 FF FF FF FF inc pc
0243 3C4 EF 77 F9 FF path [pc], mar
0243 3C4 EF 77 F9 FF path [pc], mar ;将程序计数器 PC 指定存储单元的内容传送到 MAR 中
0244 3C8 EF FB F9 BF path [mar], a
0245 3CC FF FF FF FF inc pc
0246 3D0 CF FF FF FF reset upc
......@@ -249,22 +249,22 @@
0249
0250 ; mov a, immediate
0251 3E0 FF FF FF FF inc pc
0252 3E4 EF 7F F9 BF path [pc], a
0252 3E4 EF 7F F9 BF path [pc], a ;将程序计数器 PC 指定存储单元的内容传送到 A 中
0253 3E8 FF FF FF FF inc pc
0254 3EC CF FF FF FF reset upc
0255
0256 3F0 FF FF FF FF dup 4, null
0257
0258 ; mov rx, a
0259 400 EF FF B4 D0 path a, rx
0259 400 EF FF B4 D0 path a, rx ;将累加器 A 的内容传送到寄存器 R 中
0260 404 FF FF FF FF inc pc
0261 408 CF FF FF FF reset upc
0262
0263 40C FF FF FF FF dup 5, null
0264
0265 ; mov [rx], a
0266 420 EF F7 FA FF path rx, mar
0267 424 ED FB F4 D0 path a, [mar]
0266 420 EF F7 FA FF path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR 中
0267 424 ED FB F4 D0 path a, [mar] ;将累加器 A 的内容写入地址寄存器 MAR 指定存储单元中
0268 428 FF FF FF FF inc pc
0269 42C CF FF FF FF reset upc
0270
......@@ -272,7 +272,7 @@
0272
0273 ; mov symbol, a
0274 440 FF FF FF FF inc pc
0275 444 EF 77 F9 FF path [pc], mar
0275 444 EF 77 F9 FF path [pc], mar ;将 PC 指定存储单元的内容传送到地址寄存器 MAR 中
0276 448 ED FB F4 D0 path a, [mar]
0277 44C FF FF FF FF inc pc
0278 450 CF FF FF FF reset upc
......@@ -281,181 +281,180 @@
0281
0282 ; mov rx, immediate
0283 460 FF FF FF FF inc pc
0284 464 EF 7F B9 FF path [pc], rx
0284 464 EF 7F B9 FF path [pc], rx ;将　PC 指定存储单元的内容传送到寄存器 R 中
0285 468 FF FF FF FF inc pc
0286 46C CF FF FF FF reset upc
0287
0288 470 FF FF FF FF dup 4, null
0289
0290 ; read a, symbol
0291 480 FF FF FF FF inc pc
0292 484 EF 77 F9 FF path [pc], mar
0293 488 EF 7F F9 BF path <mar>, a
0294 48C FF FF FF FF inc pc
0295 490 CF FF FF FF reset upc
0296
0297 494 FF FF FF FF dup 3, null
0298
0299 ; write symbol, a
0300 4A0 FF FF FF FF inc pc
0301 4A4 EF 77 F9 FF path [pc], mar
0302 4A8 EC FB F4 D0 path alu_aout, [mar]
0303 4AC FF FF FF FF inc pc
0304 4B0 CF FF FF FF reset upc
0305
0306 4B4 FF FF FF FF dup 3, null
0307
0308 ; lea a, symbol
0309 4C0 FF FF FF FF inc pc
0310 4C4 EF 7F F9 BF path [pc], a
0311 4C8 FF FF FF FF inc pc
0312 4CC CF FF FF FF reset upc
0313
0314 4D0 FF FF FF FF dup 4, null
0315
0316 ;mov st, immediate
0317 4E0 FF FF FF FF inc pc
0318 4E4 EF 7E F9 FF path [pc], st
0319 4E8 FF FF FF FF inc pc
0320 4EC CF FF FF FF reset upc
0321
0322 4F0 FF FF FF FF dup 4, null
0290 ; 填充空白指令
0291 480 FF FF FF FF dup 8, null
0292
0293 ; 填充空白指令
0294 4A0 FF FF FF FF dup 8, null
0295
0296 ; lea a, symbol
0297 4C0 FF FF FF FF inc pc
0298 4C4 EF 7F F9 BF path [pc], a
0299 4C8 FF FF FF FF inc pc
0300 4CC CF FF FF FF reset upc
0301
0302 4D0 FF FF FF FF dup 4, null
0303
0304 ;mov sp, immediate
0305 4E0 FF FF FF FF inc pc
0306 4E4 EF 7E F9 FF path [pc], sp ;将 PC 指定存储单元的内容传送到堆栈指针寄存器 SP 中
0307 4E8 FF FF FF FF inc pc
0308 4EC CF FF FF FF reset upc
0309
0310 4F0 FF FF FF FF dup 4, null
0311
0312 ; jc symbol
0313 500 FF FF FF FF inc pc
0314 504 EF 6F F9 FF path [pc], pc ;将 PC 指定存储单元的内容作为指令地址加载到 PC 中，实现程序跳转
0315 508 CF FF FF FF reset upc
0316
0317 50C FF FF FF FF dup 5, null
0318
0319 ; jz symbol
0320 520 FF FF FF FF inc pc
0321 524 EF 6F F9 FF path [pc], pc
0322 528 CF FF FF FF reset upc
0323
0324 ; jc symbol
0325 500 FF FF FF FF inc pc
0326 504 EF 6F F9 FF path [pc], pc
0327 508 CF FF FF FF reset upc
0324 52C FF FF FF FF dup 5, null
0325
0326 ; 填充空白指令
0327 540 FF FF FF FF dup 8, null
0328
0329 50C FF FF FF FF dup 5, null
0330
0331 ; jz symbol
0332 520 FF FF FF FF inc pc
0333 524 EF 6F F9 FF path [pc], pc
0334 528 CF FF FF FF reset upc
0329 ; jmp symbol
0330 560 FF FF FF FF inc pc
0331 564 EF 6F F9 FF path [pc], pc
0332 568 CF FF FF FF reset upc
0333
0334 56C FF FF FF FF dup 5, null
0335
0336 52C FF FF FF FF dup 5, null
0337
0338 ; 填充空白指令
0339 540 FF FF FF FF dup 8, null
0336 ; in
0337 580 EF FF F0 BF path rin, a ;将输入寄存器 RIN 的内容传送到累加器 A 中
0338 584 FF FF FF FF inc pc
0339 588 CF FF FF FF reset upc
0340
0341 ; jmp symbol
0342 560 FF FF FF FF inc pc
0343 564 EF 6F F9 FF path [pc], pc
0344 568 CF FF FF FF reset upc
0345
0346 56C FF FF FF FF dup 5, null
0341 58C FF FF FF FF dup 5, null
0342
0343 ; out
0344 5A0 EE FF F4 D0 path a, rout ;将累加器 A 中的内容传送到输出寄存器 ROUT 中
0345 5A4 FF FF FF FF inc pc
0346 5A8 CF FF FF FF reset upc
0347
0348 ; in
0349 580 EF FF F0 BF path rin, a
0350 584 FF FF FF FF inc pc
0351 588 CF FF FF FF reset upc
0352
0353 58C FF FF FF FF dup 5, null
0354
0355 ; out
0356 5A0 EE FF F4 D0 path a, rout
0357 5A4 FF FF FF FF inc pc
0358 5A8 CF FF FF FF reset upc
0359
0360 5AC FF FF FF FF dup 5, null
0361
0362 ; int immediate
0363 5C0 FF FF FF FF inc pc
0364 5C4 EB 7F F9 FF path [pc], ia
0365 5C8 EF FF 72 FF path st, cst
0366 5CC EF FF FF FF path st_minus, cst
0367 5D0 EF FE F8 FF path cst, st
0368 5D4 EF F7 F2 FF path st, mar
0369 5D8 FF FF FF FF inc pc
0370 5DC ED FB F3 FF path pc, [mar]
0371 5E0 EF F7 F1 FF path ia, mar
0372 5E4 EF EB F9 FF path [mar], pc
0373 5E8 CF FF FF FF reset upc
0374
0375 5EC FF FF FF FF dup 5, null
0376
0377 ;
0378 600 FF FF FF FF dup 16, null
0379
0380 ; ret
0381 640 EF F7 F2 FF path st, mar
0382 644 EF FF 72 FF path st, cst
0383 648 E7 FF FF FF path st_add, cst
0384 64C EF FE F8 FF path cst, st
0385 650 EF EB F9 FF path [mar], pc
0386 654 CF FF FF FF reset upc
0348 5AC FF FF FF FF dup 5, null
0349
0350 ;=======================================================================
0351 ;软中断，通过执行软中断指令，调用指定的中断服务程序
0352 ;软中断指令是双字节指令，第二个字节是立即数操作数，指调用中断的标号
0353 ; int immediate
0354 5C0 FF FF FF FF inc pc ;PC+1，指向指令中的立即数操作数，即中断号，准备读出
0355 5C4 EB 7F F9 FF path [pc], ia ;将读出的中断号写入寄存器 IA 中，将来自于立即数的低3位中断号与IA寄存器的高5位中断向量起始地址组合，得到调用中断的中断向量
0356 5C8 EF FF 72 FF path sp, cst ;堆栈指针寄存器的值传送到计数器CST中
0357 5CC EF FF FF FF path sp_dec, cst ;CST计数器减1
0358 5D0 EF FE F8 FF path cst, sp ;将CST减1后的结果写入SP中，完成SP-1，入栈，更新栈顶
0359 5D4 EF F7 F2 FF path sp, mar ;将SP指针暂存到MAR
0360 5D8 FF FF FF FF inc pc ;PC+1,中断返回地址，指向下一条指令
0361 5DC ED FB F3 FF path pc, [mar] ;将PC值写入MAR指定存储单元，在这里实现的功能是将中断返回地址（PC）写入堆栈指针（SP）指定的存储单元中
0362 5E0 EF F7 F1 FF path ia, mar ;将寄存器IA 的内容作为地址写入 MAR，在这里实现的功能是将调用中断的中断向量写入地址寄存器MAR中，准备读出中断向量指定单元的中断服务程序入口地址
0363 5E4 EF EB F9 FF path [mar], pc ;将地址寄存器MAR指定单元的内容加载到PC中，在这里实现的功能是将调用中断的服务程序首地址加载到PC，使处理器转去执行中断服务程序
0364 5E8 CF FF FF FF reset upc
0365 5EC FF FF FF FF dup 5, null
0366
0367 ;=======================================================================
0368 ;
0369 600 FF FF FF FF dup 16, null
0370
0371 ;=======================================================================
0372 ;子程序调用返回指令
0373 ; ret
0374 640 EF F7 F2 FF path sp, mar ;将堆栈指针（栈顶地址）传送到 MAR
0375 644 EF FF 72 FF path sp, cst ;
0376 648 E7 FF FF FF path sp_inc, cst ;
0377 64C EF FE F8 FF path cst, sp ;SP = SP + 1，出栈，更新栈顶
0378 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
0379 654 CF FF FF FF reset upc
0380
0381 658 FF FF FF FF dup 2, null
0382
0383 ;=======================================================================
0384
0385 ; 填充空白指令
0386 660 FF FF FF FF dup 8, null
0387
0388 658 FF FF FF FF dup 2, null
0389
0390 ; 填充空白指令
0391 660 FF FF FF FF dup 8, null
0388 ; shr a
0389 680 EF FF D5 90 path alu_shr, a ;累加器A 进行逻辑右移，结果写回A中
0390 684 FF FF FF FF inc pc
0391 688 CF FF FF FF reset upc
0392
0393 ; shr a
0394 680 EF FF D5 90 path alu_shr, a
0395 684 FF FF FF FF inc pc
0396 688 CF FF FF FF reset upc
0397
0398 68C FF FF FF FF dup 5, null
0393 68C FF FF FF FF dup 5, null
0394
0395 ; shl a
0396 6A0 EF FF D6 90 path alu_shl, a ;累加器A 进行逻辑左移，结果写回A中
0397 6A4 FF FF FF FF inc pc
0398 6A8 CF FF FF FF reset upc
0399
0400 ; shl a
0401 6A0 EF FF D6 90 path alu_shl, a
0402 6A4 FF FF FF FF inc pc
0403 6A8 CF FF FF FF reset upc
0404
0405 6AC FF FF FF FF dup 5, null
0400 6AC FF FF FF FF dup 5, null
0401
0402 ; rcr a
0403 6C0 EF FF E5 90 path alu_rcr, a ;累加器A 进行循环右移，结果写回A中
0404 6C4 FF FF FF FF inc pc
0405 6C8 CF FF FF FF reset upc
0406
0407 ; rcr a
0408 6C0 EF FF E5 90 path alu_rcr, a
0409 6C4 FF FF FF FF inc pc
0410 6C8 CF FF FF FF reset upc
0411
0412 6CC FF FF FF FF dup 5, null
0413
0414 ; rcl a
0415 6E0 EF FF E6 90 path alu_rcl, a
0416 6E4 FF FF FF FF inc pc
0417 6E8 CF FF FF FF reset upc
0418 6EC FF FF FF FF dup 5, null
0419
0420 ; nop
0421 700 FF FF FF FF inc pc
0422 704 CF FF FF FF reset upc
0423
0424 708 FF FF FF FF dup 6, null
0407 6CC FF FF FF FF dup 5, null
0408
0409 ; rcl a
0410 6E0 EF FF E6 90 path alu_rcl, a ;累加器A 进行循环左移，结果写回A中
0411 6E4 FF FF FF FF inc pc
0412 6E8 CF FF FF FF reset upc
0413 6EC FF FF FF FF dup 5, null
0414
0415 ; nop
0416 700 FF FF FF FF inc pc
0417 704 CF FF FF FF reset upc
0418
0419 708 FF FF FF FF dup 6, null
0420
0421 ; not a
0422 720 EF FF F4 B0 path alu_not, a ;累加器A 取反运算，结果写回A中
0423 724 FF FF FF FF inc pc
0424 728 CF FF FF FF reset upc
0425
0426 ; not a
0427 720 EF FF F4 B0 path alu_not, a
0428 724 FF FF FF FF inc pc
0429 728 CF FF FF FF reset upc
0430
0431 72C FF FF FF FF dup 5, null
0432
0433 ; call symbol
0434 740 FF FF FF FF inc pc
0435 744 EF 7D F9 FF path [pc], asr
0436 748 EF FF 72 FF path st, cst
0437 74C EF FF FF FF path st_minus, cst
0438 750 EF FE F8 FF path cst, st
0439 754 EF F7 F2 FF path st, mar
0440 758 FF FF FF FF inc pc
0441 75C ED FB F3 FF path pc, [mar]
0442 760 EF EF F7 FF path asr, pc
0443 764 CF FF FF FF reset upc
0444
0445 768 FF FF FF FF dup 6, null
0426 72C FF FF FF FF dup 5, null
0427
0428 ;=============================================================
0429 ;子程序调用指令，双字节指令，第二个字节是调用子程序标号，该标号实质为一个地址，所指存储单元中就是被调用子程序的入口地址（起始地址）
0430 ; call symbol
0431 740 FF FF FF FF inc pc ;PC+1
0432 744 EF 7D F9 FF path [pc], asr ;将PC指向存储单元内容写入辅助寄存器ASR中，也就是将被调用子程序的入口地址暂存到ASR中
0433 748 EF FF 72 FF path sp, cst
0434 74C EF FF FF FF path sp_dec, cst
0435 750 EF FE F8 FF path cst, sp ;返回地址入栈前，先将SP-1，指向新的栈顶
0436 754 EF F7 F2 FF path sp, mar
0437 758 FF FF FF FF inc pc ;PC+1，指向下一条指令，即返回地址
0438 75C ED FB F3 FF path pc, [mar] ;将PC（返回地址）入栈
0439 760 EF EF F7 FF path asr, pc ;将ASR寄存器的值加载到PC，也就是将调用子程序的入口地址加载到PC，转移到子程序处执行
0440 764 CF FF FF FF reset upc
0441
0442 768 FF FF FF FF dup 6, null
0443
0444 ; 填充空白指令
0445 780 FF FF FF FF dup 16, null
0446
0447 ; 填充空白指令
0448 780 FF FF FF FF dup 16, null
0449
0450 ; iret
0451 7C0 EF F7 F2 FF path st, mar
0452 7C4 EF FF 72 FF path st, cst
0453 7C8 E7 FF FF FF path st_add, cst
0454 7CC EF FE F8 FF path cst, st
0455 7D0 EF EB F9 FF path [mar], pc
0456 7D4 CF FF FF FF reset upc
0457
0458 7D8 FF FF FF FF dup 2, null
0447 ;===============================================================
0448 ;中断返回指令，可参照子程序调用返回指令，出栈
0449 ; iret
0450 7C0 EF F7 F2 FF path sp, mar
0451 7C4 EF FF 72 FF path sp, cst
0452 7C8 E7 FF FF FF path sp_inc, cst
0453 7CC EF FE F8 FF path cst, sp
0454 7D0 EF EB F9 FF path [mar], pc
0455 7D4 CF FF FF FF reset upc
0456
0457 7D8 FF FF FF FF dup 2, null
0458
0459
0460
0461
rom.masm
浏览文件 @ bfdfa835
......@@ -8,16 +8,16 @@ path [pc], ir
dup 31, null
; add a, rx
path rx, w
path alu_add, a
inc pc
reset upc
path rx, w ;将寄存器 R 的内容传送到工作寄存器 W 中，R 的内容不变
path alu_add, a ;累加器 A 与工作寄存器 W 进行无进位加运算，结果写回 A 中，即A=A+W
inc pc ;PC 加1，指向下一个字节单元
reset upc ;uPC 寄存器复位为0，指向第一条微指令，该微指令完成取指令功能
dup 4, null
; add a, [rx]
path rx, mar
path [mar], w
path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR，R 的内容不变
path [mar], w ;读出地址寄存器 MAR 指定存储单元的内容并写入工作寄存器 W 中
path alu_add, a
inc pc
reset upc
......@@ -26,7 +26,7 @@ dup 3, null
; add a, symbol
inc pc
path [pc], mar
path [pc], mar ;读出 PC 指定存储单元的内容并写入地址寄存器 MAR
path [mar], w
path alu_add, a
inc pc
......@@ -36,7 +36,7 @@ dup 2, null
; add a, immediate
inc pc
path [pc], w
path [pc], w ;读出 PC 指定存储单元的内容并写入工作寄存器 W
path alu_add, a
inc pc
reset upc
......@@ -45,7 +45,7 @@ dup 3, null
; adc a, rx
path rx, w
path alu_adc, a
path alu_adc, a ;累加器 A 与工作寄存器 W 进行带进位的加法运算，结果写回 A 中，即A=A+W+1
inc pc
reset upc
......@@ -81,7 +81,7 @@ dup 3, null
; sub a, rx
path rx, w
path alu_sub, a
path alu_sub, a ;累加器 A 减 W 进行减法运算，结果写回 A 中，即A=A-W
inc pc
reset upc
......@@ -117,7 +117,7 @@ dup 3, null
; sbb a, rx
path rx, w
path alu_sbb, a
path alu_sbb, a ;累加器 A 与工作寄存器 W 进行带进位的减法运算，结果写回 A 中，即A=A-W-1
inc pc
reset upc
......@@ -153,7 +153,7 @@ dup 3, null
; and a, rx
path rx, w
path alu_and a
path alu_and a ;A = A & W，A与W进行按位与运算
inc pc
reset upc
......@@ -189,7 +189,7 @@ dup 3, null
; or a, rx
path rx, w
path alu_or a
path alu_or a ;A = A | W，A与W进行按位或运算
inc pc
reset upc
......@@ -224,15 +224,15 @@ reset upc
dup 3, null
; mov a, rx
path rx, a
path rx, a ;将寄存器 R 的内容传送到累加器 A 中
inc pc
reset upc
dup 5, null
; mov a, [rx]
path rx, mar
path [mar], a
path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR 中
path [mar], a ;将地址寄存器MAR指定存储单元的内容传送到累加器 A 中
inc pc
reset upc
......@@ -240,7 +240,7 @@ dup 4, null
; mov a, symbol
inc pc
path [pc], mar
path [pc], mar ;将程序计数器 PC 指定存储单元的内容传送到 MAR 中
path [mar], a
inc pc
reset upc
......@@ -249,22 +249,22 @@ dup 3, null
; mov a, immediate
inc pc
path [pc], a
path [pc], a ;将程序计数器 PC 指定存储单元的内容传送到 A 中
inc pc
reset upc
dup 4, null
; mov rx, a
path a, rx
path a, rx ;将累加器 A 的内容传送到寄存器 R 中
inc pc
reset upc
dup 5, null
; mov [rx], a
path rx, mar
path a, [mar]
path rx, mar ;将寄存器 R 的内容传送到地址寄存器 MAR 中
path a, [mar] ;将累加器 A 的内容写入地址寄存器 MAR 指定存储单元中
inc pc
reset upc
......@@ -272,7 +272,7 @@ dup 4, null
; mov symbol, a
inc pc
path [pc], mar
path [pc], mar ;将 PC 指定存储单元的内容传送到地址寄存器 MAR 中
path a, [mar]
inc pc
reset upc
......@@ -281,29 +281,17 @@ dup 3, null
; mov rx, immediate
inc pc
path [pc], rx
path [pc], rx ;将　PC 指定存储单元的内容传送到寄存器 R 中
inc pc
reset upc
dup 4, null
; read a, symbol
inc pc
path [pc], mar
path <mar>, a
inc pc
reset upc
dup 3, null
; write symbol, a
inc pc
path [pc], mar
path alu_aout, [mar]
inc pc
reset upc
; 填充空白指令
dup 8, null
dup 3, null
; 填充空白指令
dup 8, null
; lea a, symbol
inc pc
......@@ -313,9 +301,9 @@ reset upc
dup 4, null
;mov st, immediate
;mov sp, immediate
inc pc
path [pc], st
path [pc], sp ;将 PC 指定存储单元的内容传送到堆栈指针寄存器 SP 中
inc pc
reset upc
......@@ -323,7 +311,7 @@ dup 4, null
; jc symbol
inc pc
path [pc], pc
path [pc], pc ;将 PC 指定存储单元的内容作为指令地址加载到 PC 中，实现程序跳转
reset upc
dup 5, null
......@@ -346,73 +334,80 @@ reset upc
dup 5, null
; in
path rin, a
path rin, a ;将输入寄存器 RIN 的内容传送到累加器 A 中
inc pc
reset upc
dup 5, null
; out
path a, rout
path a, rout ;将累加器 A 中的内容传送到输出寄存器 ROUT 中
inc pc
reset upc
dup 5, null
;=======================================================================
;软中断，通过执行软中断指令，调用指定的中断服务程序
;软中断指令是双字节指令，第二个字节是立即数操作数，指调用中断的标号
; int immediate
inc pc
path [pc], ia
path st, cst
path st_minus, cst
path cst, st
path st, mar
inc pc
path pc, [mar]
path ia, mar
path [mar], pc
inc pc ;PC+1，指向指令中的立即数操作数，即中断号，准备读出
path [pc], ia ;将读出的中断号写入寄存器 IA 中，将来自于立即数的低3位中断号与IA寄存器的高5位中断向量起始地址组合，得到调用中断的中断向量
path sp, cst ;堆栈指针寄存器的值传送到计数器CST中
path sp_dec, cst ;CST计数器减1
path cst, sp ;将CST减1后的结果写入SP中，完成SP-1，入栈，更新栈顶
path sp, mar ;将SP指针暂存到MAR
inc pc ;PC+1,中断返回地址，指向下一条指令
path pc, [mar] ;将PC值写入MAR指定存储单元，在这里实现的功能是将中断返回地址（PC）写入堆栈指针（SP）指定的存储单元中
path ia, mar ;将寄存器IA 的内容作为地址写入 MAR，在这里实现的功能是将调用中断的中断向量写入地址寄存器MAR中，准备读出中断向量指定单元的中断服务程序入口地址
path [mar], pc ;将地址寄存器MAR指定单元的内容加载到PC中，在这里实现的功能是将调用中断的服务程序首地址加载到PC，使处理器转去执行中断服务程序
reset upc
dup 5, null
;=======================================================================
;
dup 16, null
;=======================================================================
;子程序调用返回指令
; ret
path st, mar
path st, cst
path st_add, cst
path cst, st
path [mar], pc
path sp, mar ;将堆栈指针（栈顶地址）传送到 MAR
path sp, cst ;
path sp_inc, cst ;
path cst, 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
path alu_shr, a ;累加器A 进行逻辑右移，结果写回A中
inc pc
reset upc
dup 5, null
; shl a
path alu_shl, a
path alu_shl, a ;累加器A 进行逻辑左移，结果写回A中
inc pc
reset upc
dup 5, null
; rcr a
path alu_rcr, a
path alu_rcr, a ;累加器A 进行循环右移，结果写回A中
inc pc
reset upc
dup 5, null
; rcl a
path alu_rcl, a
path alu_rcl, a ;累加器A 进行循环左移，结果写回A中
inc pc
reset upc
dup 5, null
......@@ -424,22 +419,24 @@ reset upc
dup 6, null
; not a
path alu_not, a
path alu_not, a ;累加器A 取反运算，结果写回A中
inc pc
reset upc
dup 5, null
;=============================================================
;子程序调用指令，双字节指令，第二个字节是调用子程序标号，该标号实质为一个地址，所指存储单元中就是被调用子程序的入口地址（起始地址）
; call symbol
inc pc
path [pc], asr
path st, cst
path st_minus, cst
path cst, st
path st, mar
inc pc
path pc, [mar]
path asr, pc
inc pc ;PC+1
path [pc], asr ;将PC指向存储单元内容写入辅助寄存器ASR中，也就是将被调用子程序的入口地址暂存到ASR中
path sp, cst
path sp_dec, cst
path cst, sp ;返回地址入栈前，先将SP-1，指向新的栈顶
path sp, mar
inc pc ;PC+1，指向下一条指令，即返回地址
path pc, [mar] ;将PC（返回地址）入栈
path asr, pc ;将ASR寄存器的值加载到PC，也就是将调用子程序的入口地址加载到PC，转移到子程序处执行
reset upc
dup 6, null
......@@ -447,11 +444,13 @@ dup 6, null
; 填充空白指令
dup 16, null
;===============================================================
;中断返回指令，可参照子程序调用返回指令，出栈
; iret
path st, mar
path st, cst
path st_add, cst
path cst, st
path sp, mar
path sp, cst
path sp_inc, cst
path cst, sp
path [mar], pc
reset upc
......
rom.rxm
浏览文件 @ bfdfa835
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