196s8.asm

上课老师给的8086仿真器

$INCLUDE(8096.INC)
CSEG AT 2560H
	LD 18H,#00E0H
	LCALL DELAY
	LD 40H,#HSOINT
	LD 1AH,#2006H
	ST 40H,[1AH]
	DI
	LDB INT_MASK,#08H
	CLRB  INT_PENDING
	LDBZE 30H,#79H
	STB R0,[30H]+
	LDB 1CH,#02H
	SCALL IDTB
	MULU 40H,#250
	ST 40H,50H
	LDBZE 30H,#7DH
	LDB 1CH,#01H
	SCALL IDTB
	LD 42H,50H
	MULU 40H,42H
        DIVU 40H,#0100
	ST 40H,52H
	SCALL LD_COM
	EI
HERE:	LCALL DISP
	SJMP HERE
LD_COM: LDB HSO_COMMAND,#20H
	ADD HSO_TIME,TIMER1,#0003H
	NOP
	NOP
	LDB HSO_COMMAND,#00H
	ADD HSO_TIME,TIMER1,52H
	NOP
	NOP
	LDB HSO_COMMAND,#30H
	ADD HSO_TIME,TIMER1,50H
	NOP
	NOP
	RET
HSOINT: SCALL LD_COM
	RET
IDTB:  CLR 40H
       CLR 42H
       LDB 40H,[30H]+
IDTB1:	MULU 40H,#10
	LDB 42H,[30H]+
	ADD 40H,42H
	DJNZ 1CH,IDTB1
	RET
DISP:	LD 30H,#79H
	LDB 1EH,#20H
	LDB 1FH,#00H
DISP1:	LD 22H,#0FF21H
	STB 1EH,[22H]
	LDB 1BH,[30H]
	LD 1CH,#DATA0
	ADDB 1CH,1BH
	LDB 1AH,[1CH]
	LD 20H,#0FF22H
	STB 1AH,[20H]
DISP2:	DJNZ 1FH,DISP2
	INCB 30H
	SHRB 1EH,#01H
        CMPB 1EH,#00H
	JNE DISP1
	RET
DELAY:	PUSH 1AH
	LD 1AH,#8000H
DELAY1: DEC 1AH
	JNE DELAY1
	POP 1AH
	RET
DATA0:	DCB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H
	DCB 88H,83H,0C6H,0A1H,86H,8EH,0FFH,0CH,89H,0DEH
	END