微机原理接口实验-汽车速度控制系统.docx

西 安 邮 电 大 学
（计算机学院）

课内实验报告

实验名称： 汽车速度控制系统

专业名称： 计算机科学与技术
班 级： 计科1305
学生姓名： 杨阳
学号（8位）： 04131162
指导教师： 申辉
实验日期： 2016年06月24日—2016年07月01日

四．测试数据及运行结果

六．附录：源代码

DATA SEGMENT
MY8255_A EQU 1ff0H
MY8255_B EQU 1ff2H
MY8255_C EQU 1ff4H
MY8255_MODE EQU 1ff6H
LED DB 3FH, 06H, 5BH, 4FH, 66H, 6DH, 7DH, 07H, 7FH, 6FH
BUFFER DB 6 DUP(?)
datbuf db 01h,03h
DATA ENDS

stack segment stack 'stack'
stackbuffer db 200 dup (?)
stack ends

CODE SEGMENT
ASSUME CS:CODE, DS:DATA, ss:stack

;片选数码管 参数输出到C口的值
SELECTDIG MACRO DIGTION
PUSH DX
PUSH AX
MOV DX, MY8255_C
MOV AL, DIGTION
OUT DX, AL
POP AX
POP DX
ENDM

;先显示的零数
SHALFCOUNT PROC NEAR
MOV UFFER[0],AH ;buffer[0]:PC1
MOV BUFFER[1], AL ;
PUSH BX
PUSH DX
SHOWFF:
MOV AL, [SI]
MOV BL, [DI]

SELECTDIG BUFFER[0]
MOV AL, AL
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
SELECTDIG BUFFER[1]
MOV AL, BL
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
INC SI
LOOP SHOWFF
POP DX
POP BX
RET
SHALFCOUNT ENDP

QHALFCOUNT PROC
MOV BUFFER[0], AH
MOV BUFFER[1], AL
PUSH BX
PUSH DX
SHOWFFQ:
MOV AL, [SI]
MOV BL, [DI]

SELECTDIG BUFFER[0]
MOV AL, AL
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
SELECTDIG BUFFER[1]
MOV AL, BL
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
INC SI
LOOP SHOWFFQ
POP DX
POP BX
ret
QHALFCOUNT ENDP

SLOWSPEED PROC NEAR
PUSH DX
PUSH DI
MOV BUFFER[0], AH
MOV BUFFER[1], AL
MOV BUFFER[2], BH
MOV BUFFER[3], BL
LOOPDECADE:
PUSH CX
MOV CX, 10
MOV DI, OFFSET LED
LOOPUNIT:
SELECTDIG BUFFER[3]
MOV AL, [DI]
MOV DX, MY8255_B
MOV BL, AL
OUT DX, AL
INC DI
CALL BIGDELAY
SELECTDIG BUFFER[2]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
CMP BL, BUFFER[1]
JZ CMPDECADE
LOOPBACK:
LOOP LOOPUNIT
POP CX
INC SI
LOOP LOOPDECADE
CMPDECADE:
CMP AL, BUFFER[0]
JZ EXIT
JNZ LOOPBACK
EXIT:
POP DI
POP DX
RET
SLOWSPEED ENDP

QUICKSPEED PROC NEAR
MOV BUFFER[0], AH ;shi wei
MOV BUFFER[1], AL ;ge wei
MOV BUFFER[2], BH ; xian shi shi wei
MOV BUFFER[3], BL ;xian shi ge wei
PUSH DX
PUSH DI
LOOPDECADEQ:
PUSH CX
MOV CX, 10
MOV DI, OFFSET LED
LOOPUNITQ:
SELECTDIG BUFFER[3]
MOV AL, [DI]
MOV DX, MY8255_B
MOV BL, AL
OUT DX, AL
INC DI
CALL DELAY
SELECTDIG BUFFER[2]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
CMP BL, BUFFER[1]
JZ CMPDECADEQ
LOOPBACKQ:
LOOP LOOPUNITQ
POP CX
INC SI
LOOP LOOPDECADEQ
CMPDECADEQ:
CMP AL, BUFFER[0]
JZ EXITQ
JNZ LOOPBACKQ
EXITQ:
POP DI
POP DX
RET
QUICKSPEED ENDP

GREEN PROC NEAR
PUSH AX
PUSH DX
MOV CX, 0 ;+
LOOPGREEN:
SELECTDIG 41H
MOV AL, 6DH
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY

SELECTDIG 42H
MOV AL, 3FH
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY

MOV DX, MY8255_A
IN AL, DX
CMP AL, 00000001B
JNZ GREENSTART
INC CX
LOOP LOOPGREEN
GREENSTART:
pop dx
pop ax
RET
GREEN ENDP

YELLOW PROC NEAR
PUSH AX
PUSH DX
MOV CX, 0 ;+
LOOPYELL:
SELECTDIG 21H
MOV DX, MY8255_B
MOV AL, 7DH
OUT DX, AL
CALL DELAY
SELECTDIG 22H
MOV DX, MY8255_B
MOV AL, 5BH
OUT DX, AL
CALL DELAY

MOV DX, MY8255_A
IN AL, DX
CMP AL, 00000010B
JNZ YELLSTART
INC CX
LOOP LOOPYELL
YELLSTART:
POP DX
POP AX
RET
YELLOW ENDP

RED PROC NEAR
PUSH AX
PUSH DX
MOV CX , 0 ;+
LOOPRED:
SELECTDIG 11H
MOV DX, MY8255_B
MOV AL, 06H
OUT DX, AL
CALL DELAY

SELECTDIG 12H
MOV DX, MY8255_B
MOV AL, 6DH
OUT DX, AL
CALL DELAY

MOV DX, MY8255_A
IN AL, DX
CMP AL, 00000100B
JNZ REDSTART
INC CX
LOOP LOOPRED
REDSTART:
POP DX
POP AX
RET
RED ENDP

ENDNUM PROC NEAR
MOV BUFFER[0], AL
MOV BUFFER[1], AH
MOV BUFFER[2], BL
MOV BUFFER[3], CL
MOV BUFFER[4], CH
PUSH DX
MOV CX, 0 ;+
LOOPSHOW:
SELECTDIG BUFFER[3]
MOV AL, BUFFER[0]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
SELECTDIG BUFFER[4]
MOV AL,BUFFER[1]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
MOV DX, MY8255_A
IN AL, DX
CMP AL, BUFFER[2]
JNZ LOOPSTART
INC CX
LOOP LOOPSHOW
LOOPSTART:
POP DX
call bigdelay
call bigdelay
call bigdelay
call bigdelay
call bigdelay
call bigdelay

RET
ENDNUM ENDP

;慢刹车
DOWNSPEED PROC NEAR
PUSH DX
PUSH AX
DOWNFIRST:
SELECTDIG BUFFER[0] ;显示单独的个位倒序循环
MOV AL, [SI] ;个位
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
SELECTDIG BUFFER[1] ;十位
MOV AL, [DI]
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
CMP SI, 00H
JZ DOWNSECOND
DEC SI
JMP DOWNFIRST
DOWNSECOND:
MOV CX, DI ;十位
DEC DI
DOWNDECADE:
PUSH CX
MOV SI, OFFSET LED + 9 ;个位
MOV CX, 10
DOWNUNIT:
SELECTDIG BUFFER[0]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
SELECTDIG BUFFER[1]
MOV AL, [DI]
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
DEC SI
LOOP DOWNUNIT
POP CX
DEC DI
LOOP DOWNDECADE
POP AX
POP BX
RETURN:
RET
DOWNSPEED ENDP

;刹车
QDOWNSPEED PROC NEAR
PUSH DX
PUSH AX
QDOWNFIRST:
SELECTDIG BUFFER[0] ;显示单独的个位倒序循环
MOV AL, [SI] ;个位
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
SELECTDIG BUFFER[1] ;十位
MOV AL, [DI]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
CMP SI, 00H
JZ QDOWNSECOND
DEC SI
JMP QDOWNFIRST
QDOWNSECOND:
MOV CX, DI ;十位
DEC DI
QDOWNDECADE:
PUSH CX
MOV SI, OFFSET LED + 9 ;个位
MOV CX, 10
QDOWNUNIT:
SELECTDIG BUFFER[0]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
SELECTDIG BUFFER[1]
MOV AL, [DI]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
DEC SI
LOOP QDOWNUNIT
POP CX
DEC DI
LOOP QDOWNDECADE
POP AX
POP BX
QRETURN:
RET
QDOWNSPEED ENDP

URGENCY PROC NEAR
PUSH AX
PUSH DX
SELECTDIG 01H
MOV AL, 3FH
MOV DX, MY8255_B
OUT DX, AL
SELECTDIG 02H
MOV AL, 3FH
MOV DX, MY8255_B
OUT DX, AL
POP DX
POP AX
RET
URGENCY ENDP

START:
MOV AX, DATA
MOV DS, AX
mov ax, stack
mov ss, ax

MOV DX, MY8255_MODE ;send control word
MOV AL, 90H ;10010000b
OUT DX, AL

LOOP1:
MOV DX, MY8255_A ;read from a
IN AL, DX
MOV BL,AL
CMP BL, 11111110B ;judge pa0
JZ JUST_GREEN
CMP BL, 11111101B
JZ JUST_YELLOW
CMP BL, 11111011B
JZ JUST_RED
CMP BL, 0F5H
JZ SEC_UP_S1
CMP BL, 0EDH
JZ SEC_UP_F1
CMP BL, 0F6H
JZ FIR_UP_S1
CMP BL, 0EEH
JZ FIR_UP_F1
CMP BL,0F3H
JZ THIRD_UP_S1
CMP BL, 0EBH
JZ THIRD_UP_F1
CMP BL, 0DEH
JZ FIR_DOWN_S1
CMP BL, 0BEH
JZ FIR_DOWN_F1
CMP BL, 0DDH
JZ SEC_DOWN_S1
CMP BL, 0BDH
JZ SEC_DOWN_F1
CMP BL, 0DBH
JZ THIRD_DOWN_S1
CMP BL, 0BBH
JZ THIRD_DOWN_F1
cmp bl, 00h
jz byebye1
CALL URGENCY
JMP LOOP1
byebye1:
jmp byebye
JUST_GREEN:
CALL GREEN
JMP LOOP1
JUST_YELLOW:
CALL YELLOW
JMP LOOP1
JUST_RED:
CALL RED
JMP LOOP1
SEC_UP_S1:
JMP SEC_UP_S
SEC_UP_F1:
JMP SEC_UP_F
FIR_UP_S1:
JMP FIR_UP_S
FIR_UP_F1:
JMP FIR_UP_F
THIRD_UP_S1:
JMP THIRD_UP_S
THIRD_UP_F1:
JMP THIRD_UP_F
FIR_DOWN_F1:
JMP FIR_DOWN_F
FIR_DOWN_S1:
JMP FIR_DOWN_S
SEC_DOWN_F1:
JMP SEC_DOWN_F
SEC_DOWN_S1:
JMP SEC_DOWN_S
THIRD_DOWN_F1:
JMP THIRD_DOWN_F
THIRD_DOWN_S1:
JMP THIRD_DOWN_S

FIR_UP_S:
MOV SI, 5
MOV DI, 0
MOV CX , 5
MOV AH, 41H
MOV AL, 42H
CALL SHALFCOUNT

MOV CX, 2
MOV SI, OFFSET LED + 1
MOV AH, 5BH
MOV AL , 6DH
MOV BH, 42H
MOV BL, 41H

MOV BUFFER[0], AH
MOV BUFFER[1], AL
MOV BUFFER[2], BH
MOV BUFFER[3], BL
LOOPDECADE1:
PUSH CX
MOV CX, 10
MOV DI, OFFSET LED
LOOPUNIT1:
SELECTDIG BUFFER[3]
MOV AL, [DI]
MOV DX, MY8255_B
MOV BL, AL
OUT DX, AL
INC DI
CALL BIGDELAY
SELECTDIG BUFFER[2]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL BIGDELAY
CMP BL, BUFFER[1]
JZ CMPDECADE1
LOOPBACK1:
LOOP LOOPUNIT1
POP CX
INC SI
LOOP LOOPDECADE1
CMPDECADE1:
CMP AL, BUFFER[0]
JZ EXIT1
JNZ LOOPBACK1
EXIT1:

MOV AH, 5BH
MOV AL, 6DH
MOV BL, 0F6H
MOV CH, 42H
MOV CL, 41H
CALL ENDNUM
JMP LOOP1

FIR_UP_F:
MOV SI, 5
MOV DI, 0
MOV CX , 5
MOV AH, 41H
MOV AL, 42H
CALL QHALFCOUNT

MOV CX, 2
MOV SI, OFFSET LED + 1
MOV AH, 5BH
MOV AL , 6DH
MOV BH, 42H
MOV BL, 41H

MOV BUFFER[0], AH
MOV BUFFER[1], AL
MOV BUFFER[2], BH
MOV BUFFER[3], BL
LOOPDECADE2:
PUSH CX
MOV CX, 10
MOV DI, OFFSET LED
LOOPUNIT2:
SELECTDIG BUFFER[3]
MOV AL, [DI]
MOV DX, MY8255_B
MOV BL, AL
OUT DX, AL
INC DI
CALL DELAY
SELECTDIG BUFFER[2]
MOV AL, [SI]
MOV DX, MY8255_B
OUT DX, AL
CALL DELAY
CMP BL, BUFFER[1]
JZ CMPDECADE2
LOOPBACK2:
LOOP LOOPUNIT2
POP CX
INC SI
LOOP LOOPDECADE2
CMPDECADE2:
CMP AL, BUFFER[0]
JZ EXIT2
JNZ LOOPBACK2
EXIT2:

MOV AH, 5BH
MOV AL, 6DH
MOV BL, 0EEH
MOV CH, 42H
MOV CL, 41H
CALL ENDNUM
JMP LOOP1

SEC_UP_S:
MOV SI, 6
MOV DI, 2
MOV CX , 4
MOV AH, 21H
MOV AL, 22H
CALL SHALFCOUNT

MOV CX, 2
MOV SI, OFFSET LED + 3
MOV AH, 6DH
MOV AL , 3FH
MOV BH, 22H
MOV BL, 21H
CALL SLOWSPEED

MOV AH, 6DH
MOV AL, 3FH
MOV BL, 0F5H
MOV CH, 22H
MOV CL, 21H
CALL ENDNUM
JMP LOOP1
SEC_UP_F:
MOV SI, 6
MOV DI, 2
MOV CX , 4
MOV AH, 21H
MOV AL, 22H
CALL QHALFCOUNT

MOV CX, 2
MOV SI, OFFSET LED + 3
MOV AH, 6DH
MOV AL , 3FH
MOV BH, 22H
MOV BL, 21H
CALL QUICKSPEED

MOV AH, 6DH
MOV AL, 3FH
MOV BL, 0EDH
MOV CH, 22H
MOV CL, 21H
CALL ENDNUM
JMP LOOP1

THIRD_UP_S:
MOV SI, 1
MOV DI, 5
MOV CX , 9
MOV AH, 11H
MOV AL, 12H
CALL SHALFCOUNT

MOV CX, 3
MOV SI, OFFSET LED + 6
MOV AH, 6FH
MOV AL , 3FH
MOV BH, 12H
MOV BL, 11H
CALL SLOWSPEED

MOV AH, 6FH
MOV AL, 3FH
MOV BL, 0F3H
MOV CH, 12H
MOV CL, 11H
CALL ENDNUM
JMP LOOP1

THIRD_UP_F:
MOV SI, 1
MOV DI, 5
MOV CX , 9
MOV AH, 11H
MOV AL, 12H
CALL QHALFCOUNT

MOV CX, 3
MOV SI, OFFSET LED + 6
MOV AH, 6FH
MOV AL , 3FH
MOV BH, 12H
MOV BL, 11H
CALL QUICKSPEED

MOV AH, 6FH
MOV AL, 3FH
MOV BL, 0EBH
MOV CH, 12H
MOV CL, 11H
CALL ENDNUM
JMP LOOP1

FIR_DOWN_F:
MOV BUFFER[0], 41H
MOV BUFFER[1], 42H
MOV SI, OFFSET LED + 5
MOV DI, OFFSET LED + 2
CALL QDOWNSPEED

MOV