a16-2.asm

来自「汇编语言的设计」· 汇编 代码 · 共 27 行

STACK SEGMENT STACK
	DW 64 DUP(?)
STACK ENDS

CODE SEGMENT
	ASSUME CS:CODE

START:	MOV AL,00H
A1:	OUT 00H,AL
	CALL DALLY
	MOV AL,7FH
	OUT 00H,AL
	CALL DALLY
	JMP START
DALLY:	PUSH CX
	PUSH AX
	MOV CX,0100H
A3:	MOV AX,056CH
A4:	DEC AX
	JNZ A4
	LOOP A3
	POP AX
	POP CX
	RET
CODE ENDS
     END START