l4-72.asm

汇编经典例程,是学习微机原理的好帮手,包括循环 分支等结构

DATA SEGMENT
BUF  DW  7,15,37,8600,0A768H,3412H,1256H,76H
DATA ENDS
STACK SEGMENT
SA  DB  100 DUP(?)
TOP LABEL WORD
STACK ENDS
CODE SEGMENT
ASSUME CS:CODE, DS:DATA,SS:STACK
MAIN PROC FAR
START: MOV AX, STACK
       MOV SS, AX
       MOV SP, OFFSET TOP
       PUSH DS
       SUB AX, AX
       PUSH AX
       MOV AX, DATA
       MOV DS, AX
       MOV BX,0
       MOV CX, BUF[BX]
       DEC CX
L1:    MOV DX, CX
L2:    ADD BX,2
       MOV AX, BUF[BX]
       CMP AX, BUF[BX+2]
       JBE CONT1
       XCHG AX, BUF[BX+2]
       MOV BUF[BX],AX
CONT1: LOOP L2
       MOV CX, DX
       MOV BX,0
       LOOP L1
       RET
MAIN ENDP   
CODE ENDS
END START