讀寄存器內(nèi)容的源代碼

我的環(huán)境是WINXP+MASM5.0通過編譯生成可執(zhí)行文件，雙擊，提示寫入文件成功，按任意鍵推出。在程序的同一目錄下的TEMP.TXT中已經(jīng)寫入了：
ABCD
4645
4F5B
FFFF
四行用來測試而顯示送入寄存器的值。
以下是完整的代碼，
MovToVar Macro m_Reg,Asc_AX
?? mov bx,m_Reg
?? call ConvertToAsc
?lea si,CAscii
?lea di,Asc_AX
?mov cx,4d
?rep movsb
EndM

data segment
?mAX? dw 0
?mBX? dw 0
?mCX? dw 0
?mDX? dw 0
?
?AscAX? db 4 dup(?),0dh,0ah
?AscBX? db 4 dup(?),0dh,0ah
?AscCX? db 4 dup(?),0dh,0ah
?AscDX? db 4 dup(?),0dh,0ah
?WriteBytes EQU $-AscAX
?
?CAscii? db 5 dup(?)? ;臨時存放轉(zhuǎn)化結(jié)果
?
?filename db 'temp.txt$',0h
?filehandle dw ?
?ferr_num1 db 'Error occurred when create file!$'
? ferr_num2 db 'Write file error!$'
? tssaveok db 'Write register value to file success.$'
? tsexit? db 'Press any key to exit...$'
?
data ends

Code segment
?assume cs:code,ds:data,es:data
?
?Main proc far
??? start:
?push ds
?sub ax,ax
?mov ax,data
?mov ds,ax
?mov es,ax
?sub ax,ax