init template

36dcae0a · 赵鹏翀 · 36dcae0a · 36dcae0a · 36dcae0a · 36dcae0a
--- a/.gitignore
+++ b/.gitignore
+/*.img
+/bochs
+/Debug
+/Release
+bochsout.txt
\ No newline at end of file
--- a/Demo052.asmproj
+++ b/Demo052.asmproj
+<?xml version="1.0" encoding="gb2312"?>
+<ASMProject Version="1.00" Name="Demo052">
+	<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/Demo052.puo
+++ b/Demo052.puo
--- a/main.asm
+++ b/main.asm
+assume cs:codesg
+datasg segment
+   db '0123456789ABCDEF'
+datasg ends
+codesg segment
+start:
+    mov ax, datasg
+    mov ds, ax
+    mov bx, 0
+    mov cx, 16
+s:
+    mov al, [bx]
+    call showbyte
+    mov [bx], al
+    inc bx
+    loop s
+    mov ax, 4c00h
+    int 21h
+showbyte:                            ;子程序如下
+    jmp short show
+    table db '0123456789ABCDEF'      ;字符表
+show:
+    push bx
+    push es
+    mov ah, al
+    shr ah, 1
+    shr ah, 1
+    shr ah, 1
+    shr ah, 1                        ;右移4位，ah中得到高4位的值
+    and al, 00001111b                ;al中为低4位的值
+    mov bl, ah
+    mov bh, 0
+    mov ah, table[bx]                ;用高4位的值作为相对于table的偏移，取得对应的字符
+    mov bx, 0b800h
+    mov es, bx
+    mov es:[160*12+40*2], ah
+    mov bl, al
+    mov bh, 0
+    mov al, table[bx]                ;用低4位的值作为相对于table的偏移，取得对应的字符
+    mov es:[160*12+40*2+2], al
+    pop es
+    pop bx
+    ret
+codesg ends
+end start
\ No newline at end of file