chp3_5.asm

关于8086汇编的一些作业程序

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
W1 DW 0504H
W2 DW 0406H
B3 DB ?
data ends
code segment
begin proc far
      assume ss:stack,cs:code,ds:data
      push ds
      sub ax,ax
      push ax
      mov ax,data
      mov ds,ax
      MOV AX,W1
      MOV CL,4
      SHL AH,CL
      OR AH,AL
      MOV BX,W2
      SHL BH,CL
      OR BH,BL
      SUB AH,BH
      SUB AH,6
      MOV B3,AH
      ret
begin endp
code ends
     end begin