init template

93247ed6 · 赵鹏翀 · 93247ed6 · 93247ed6 · 93247ed6 · 93247ed6
--- a/.gitignore
+++ b/.gitignore
+/*.img
+/bochs
+/Debug
+/Release
+bochsout.txt
\ No newline at end of file
--- a/Demo047.asmproj
+++ b/Demo047.asmproj
+<?xml version="1.0" encoding="gb2312"?>
+<ASMProject Version="1.00" Name="Demo047">
+	<Configurations>
+		<Configuration Name="Debug" ConfigurationType="2">
+			<Tool Name="PreBuildEventTool"/>
+			<Tool Name="CustomBuildTool"/>
+			<Tool Name="GCCCompilerTool"/>
+			<Tool Name="JWASMAssemblerTool" ObjectFormate="5" GenerateDebugInformation="-1" VersionDebugInfo="-1" AdditionalOptions="/W0"/>
+			<Tool Name="PreLinkEventTool"/>
+			<Tool Name="GCCLinkerTool"/>
+			<Tool Name="JWlinkLinkerTool" AdditionalOptions="disable 1014"/>
+			<Tool Name="PostBuildEventTool"/>
+		</Configuration>
+	</Configurations>
+	<Files>
+		<Filter Name="Դļ" Filter="asm">
+			<File RelativePath=".\main.asm">
+			</File>
+		</Filter>
+	</Files>
+</ASMProject>
--- a/Demo047.puo
+++ b/Demo047.puo
--- a/main.asm
+++ b/main.asm
+assume cs:codesg
+
+codesg segment
+start:
+    ;将模拟loop指令功能的程序写入0:200处
+    mov ax, cs
+    mov ds, ax
+    mov si, offset lp
+    mov ax, 0
+    mov es, ax
+    mov di, 200h
+    mov cx, 80
+    cld
+    rep movsb
+    
+    ;设置中断向量表，将程序的入口地址保存在7ch表项中，使其成为中断7ch的中断例程
+    mov ax, 0
+    mov es, ax
+    mov word ptr es:[7ch*4], 200h
+    mov word ptr es:[7ch*4+2], 0
+    
+    mov ax, 0b800h                       ;在屏幕中间显示80个'!'
+	mov es, ax
+	mov di, 160*12
+	
+	mov bx, offset s-offset se           ;设置从标号se到标号s的转移位移
+	mov cx, 80
+s:  mov byte ptr es:[di], '!'
+    add di, 2
+    int 7ch                              ;如果(cx)≠0,转移到标号s处
+se:
+    nop
+		
+    mov ax,4c00h
+    int 21h
+lp:
+    push bp                              ;将bp入栈保存，结束时出栈恢复
+    mov bp, sp
+    dec cx
+    jcxz lpret
+    add [bp+2], bx
+lpret:
+    pop bp
+    iret    
+   
+codesg ends
+
+end start
\ No newline at end of file