;程序名：T3－9，asm
;功能：说明根据计数法控制循环
DSEG SEGMENT
SUM DW ?
DSEG ENDS
CSEG SEGMENT
ASSUME CS:CSEG
START:MOV AX,40H
MOV DS,AX
MOV SI,0
MOV CX,1024
XOR AX,AX
AGAIN:ADD AX ,[SI]
INC SI
INC SI
LOOP AGAIN
;
ASSUME DS:DSEG
MOV BX,DSEG
MOV DS,BX
MOV SUM,AX
MOV AH,4CH
INT 21H
CSEG ENDS
EDN START
我刚学汇编，看见很多汇编源程序都有上述红色部分，确实看不出有什么作用！！
2006-08-10 01:48
2006-08-12 12:04
确切的说是设置段寄存器
2006-08-15 13:40
;程序名：T3－9，asm
;功能：说明根据计数法控制循环
DSEG SEGMENT
SUM DW ?
DSEG ENDS
CSEG SEGMENT
ASSUME CS:CSEG,ds:dseg
START:MOV AX,dseg ;40H
MOV DS,AX
MOV SI,0
MOV CX,1024
XOR AX,AX
AGAIN:ADD AX ,[SI]
INC SI
INC SI
LOOP AGAIN
;;这一部分我给删了
MOV SUM,AX
MOV AH,4CH
INT 21H
CSEG ENDS
EDN START
2006-09-19 16:15
