微机原理及接口技术课程设计交通灯.doc

506040 ,334 4 5 6 799 9 11131315 8259A 8255A 8253/ LED 1601215216503520204205551 18255A28255A2. 823528259AIRQ7152082352CLK2OPCLK1.19318MHZGATE2+5V 8259A218H219H8255AA-200HB-201HC-202H- 203H82530-208H1-209H2-20aH0-20bH 18259A21821F8255A2002078253 20820F025000CLK02.5MHZ10msCX01205LED3000TB/3.823508259AIRQ08253010ms38255ADATA SEGMENTLED DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH,39H,5EH,79H,71HD1 EQU 10HD2 EQU 200H 8255AAEA EQU 200H 8259EE EQU 203HCONTROL EQU 20bH 8253COUNT0 EQU 208HCOUNT1 EQU 209HCOUNT2 EQU 20aHZ8279 EQU 222HD8279 EQU 220HLEDMOD EQU 00 ;,LEDFEQ EQU 38H ;DATA ENDSCODE SEGMENTASSUME CS:CODE,DS:DATACODE SEGMENTASSUME CS:CODECONT DB 0CONT1 DB 0CONT2 DB 0BKSD DB 0BKAD DB 0BKDA DB 0TEMP DB 0;*START:MOV AX,0MOV DS,AXMOV AX,OFFSET IRQ0ADD AX,2000HMOV SI,0FH*4MOV SI,AXMOV AX,0 MOV SI+2,AXIN AL,218HAND AL,7FHOUT 219H,ALCLIMOV AL,80H ;8255OUT EE,ALMOV AL,00OUT EA,ALMOV AL,0f0HOUT EA,ALMOV DX,218H ;8259MOV AL,00010010bOUT DX,ALMOV AL,08HMOV DX,219HOUT DX,ALMOV DX,203H ;MOV AL,80HOUT DX,ALMOV DX,200HMOV AL,0ffhOUT DX,AL ;LEDMOV DX,200H ;MOV AL,0F0HOUT DX,ALMOV AL,00110110b 8253OUT CONTROL,ALMOV AX,2500MOV DX,COUNT0OUT DX,ALMOV AL,AHOUT COUNT0 ,ALMOV AX,DATAMOV DS,AXA1: STIHLTJMP A1 IRQ0: JMP COMPARECOMPARE:CMP DL,0JZ STATE0CMP DL,1JZ STATE1CMP DL,2JZ STATE2CMP DL,3JZ STATE3STATE0: 0mov al,01011010bout D2,alDEC SIJNZ CHANGE1DEC DHMOV SI,100CHANGE1:DEC CXCMP CX,0JNZ M0MOV CX,500STATE1: DEC DI 1CMP DI,0JNZ SHINE1MOV AL, 00001010b OUT D2,ALMOV DI,50JMP CHANGESHINE1: MOV AL,11111010B OUT D2,ALCHANGE: DEC SIJNZ CHANGE2DEC DIMOV SI,100CHANGE2:DEC CXCMP CX,0JNZ M1MOV CX,2000MOV DH,25STATE2: MOV AL,10100101b 2OUT D2,ALDEC SIJNZ CHANGE3 DEC DHMOV SI,100CHANGE3:DEC CXCMP CX,0JNZ M2MOV CX,500STATE3: DEC DI 3CMP DI,0JNZ SHINE2MOV AL,10100000B OUT D2,ALMOV DI,50JMP SOURCESHINE2: MOV AL,10101111B OUT D2,ALSOURCE: DEC SIJNZ CHANGE4DEC DHMOV SI,100CHANGE4:DEC CXCMP CX,0JNZ M3MOV CX,6000MOV DH,65M0: MOV DL,0 0JMP EXITM1: MOV DL,1 1JMP EXITM2: MOV DL,2 2JMP EXITM3: MOV DL,3 3EXIT: MOV AL,20HOUT 218H,AL