?? bujin.asm
字號:
MY8255_A EQU 9C60H
MY8255_B EQU 9C61H
MY8255_C EQU 9C62H
MY8255_MODE EQU 9C63H
STACK SEGMENT STACK
DW 256 DUP(?)
STACK ENDS
DATA SEGMENT
TABLE DB 01H,03H,02H,06H,04H,0CH,08H,09H
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START: MOV AX,DATA
MOV DS,AX
MAIN: MOV DX,MY8255_MODE
MOV AL,80H
OUT DX,AL
A1: MOV BX,OFFSET TABLE
MOV CX,0008H
A2: MOV AL,[BX]
MOV DX,MY8255_B
OUT DX,AL
CALL DALLY
INC BX
LOOP A2
CALL BREAK
JMP A1
DALLY: PUSH CX
PUSH AX
MOV CX,0FFFH
A3: MOV AX,5000H
A4: DEC AX
JNZ A4
LOOP A3
POP AX
POP CX
RET
BREAK PROC NEAR
MOV AH,06H
MOV DL,0FFH
INT 21H
JE RETURN
MOV AX,4C00H
INT 21H
RETURN:RET
BREAK ENDP
CODE ENDS
END START
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