资料介绍
汇编语言程序(4)
实验四 接口实验
w88 石光 981239
源程序1;
STACK SEGMENT PARA STACK 'STACK'
DB 256 DUP(0)
STACK ENDS
DATA SEGMENT
SEG8 DW ?
OFF8 DW ?
IMR DB ?
COUNT DB 100
TENH DB '2'
HOUR DB '3:'
TENM DB '5'
MINUTE DB '9:'
TENS DB '5'
SECOND DB '0',0DH,'$'
DATA ENDS
CODE SEGMENT
START PROC FAR
ASSUME CS:CODE,DS:DATA
MOV AX,DATA
MOV DS,AX
MOV AH,0
INT 16H
MOV AL,08H
MOV AH,35H
INT 21H
MOV SEG8,DS
;中断向量应返回在[DS]∶[BX]中
MOV OFF8,BX
CLI
PUSH DS
MOV AX,SEG TIMER
MOV DS,AX
MOV DX,OFFSET TIMER
MOV AL,8
;此处遗漏中断号
MOV AH,25H
INT 21H
POP DS
MOV AL,00110110B
OUT 43H,AL