汇编刷题 已知整数变量A和B，试编写完成下列操作的程序

1.若两个数中有一个是奇数，一个是偶数，则将它们互换储存地址

2.若两个数都是奇数，则分别加一

3.若两个数都是偶数，则不变

 

DATA SEGMENT

A DB 12H

B DB 25H

DATA ENDS

 

STACK SEGMENT

STACK ENDS

 

CODE SEGMENT

ASSUME CS:CODE,DS:DATA,SS:STACK

START:

MOV AX,DATA

MOV DS,AX

 

MOV AL,0

MOV BL,A

TEST BL,01H

JZ ADD_TIME_1

ONE:

MOV BL,B

TEST BL,01H

JZ ADD_TIME_2

TWO:

TEST AL,03H

JNZ ONE_ODD

TWO_ODD:

INC A

INC B

JMP EXIT

 

ADD_TIME_1:

INC AL

JMP ONE

 

ADD_TIME_2:

INC AL

JMP TWO

 

ONE_ODD:

TEST AL,01H

JZ ZERO_ODD

MOV DL,A

XCHG DL,B

MOV A,DL

JMP EXIT

 

ZERO_ODD:

JMP EXIT

 

EXIT:

MOV BH,A

MOV BL,B

MOV AH,4CH

INT 21H

 

 

CODE ENDS

END START