196s13.asm

上课老师给的8086仿真器

$INCLUDE(8096.INC)
CSEG AT 2080H
START:	LD 18H,#00E0H
	LDB IOC1,#01H
BEGIN:  LD 20H,#0100H
        LDB 1AH,00H
BEGIN1: LDB PWM_CONTROL,1AH
	LDB 1CH,#40H
LOOP:	DJNZ 1CH,LOOP
	INCB 1AH
	JNC BEGIN1
	DJNZ 20H,BEGIN1

        LD 20H,#0200H
        LDB 1AH,#00H
LOW:	LDB PWM_CONTROL,1AH
	LDB 1CH,#40H
LOOP1:	DJNZ 1CH,LOOP1
	INCB 1AH
        CMPB 1AH,#00H
	JNE LOW
	SUBB 1AH,#04H
HIGH:	LDB PWM_CONTROL,1AH
	LDB 1CH,#40H
LOOP2:	DJNZ 1CH,LOOP2
	SUBB 1AH,#04H
        CMPB 1AH,#00H
	JNE HIGH
	DEC 20H
	JNE LOW
	LJMP BEGIN
        END