07a.asm

来自「录音子程序 mov dx,offset news_2 显示放音提示」· 汇编 代码 · 共 45 行

DATA SEGMENT

        ioport equ 0c000h-280h
        ioport1 equ ioport+288h
        ioport2 equ ioport+289h
        ioport3 equ ioport+28ah
        ioport4 equ ioport+28bh

DATA ENDS

CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START PROC FAR
STT:PUSH DS
    SUB AX,AX
    PUSH AX
;==============================
        MOV AX,DATA
        MOV DS,AX

FORMAT: MOV DX,ioport4
        MOV AL,89H     ;CW=10001001
        OUT DX,AL

CONTROL:MOV DX,ioport3
        IN AL,DX
        MOV DX,ioport1
        OUT DX,AL

        MOV AH,0BH
        INT 21H
        CMP AL,00H
        JNE EXIT
        JMP CONTROL

EXIT:   MOV AH,4CH
        INT 21H

;==============================
    RET
START ENDP
CODE ENDS
END STT