微机原理课程设计跑马灯.doc

微机原理课程设计走马灯运用8086最小模式和8255等芯片设计出一个跑马灯电路，要求至少有5中花式，在ISIS 7 Professional软件中运行。设计电路图如图所示：源代码DATA SEGMENT DATA ENDS CODE SEGMENT ASSUME CS:CODE ,DS:DATA START :MOV AX,DATA MOV DS,AX MOV AL,10010000B OUT 96H,AL A0: IN AL,90H NOT AL MOV BL,AL OUT 92H,AL CMP AL,1 JNZ A3 A2: MOV DL,AL ;第一个开关实现从上至下的流水 OUT 92H,AL IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV CX,50000 A1: LOOP A1 MOV AL,DL ROL AL,1 JMP A2 A3: CMP AL,2 ; 实现第二个开关从下至上的流水 JNZ A6 MOV AL,80H A5: MOV DL,AL OUT 92H,AL MOV CX,50000 A4: LOOP A4 IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV AL,DL ROR AL,1 JMP A5 A6: CMP AL,4 ;第三个开关实现相隔的两个灯自上而下流水 JNZ A9 MOV AL, 05H A8: MOV DL,AL OUT 92H,AL MOV CX,20000 A7: LOOP A7 IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV AL,DL ROL AL,1 JMP A8 A9: CMP AL,8 ;第四个开关实现相隔的两个灯从下而上流水 JNZ A12 MOV AL,0A0H A11: MOV DL,AL OUT 92H,AL MOV CX,20000 A10: LOOP A10 IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV AL,DL ROR AL,1 JMP A11 A12: CMP AL,10H JNZ A17 A16: MOV AL,18H ;第五个开关实现从中间向两边流水 A14: MOV DL,AL OUT 92H,AL MOV CX,20000 A13: LOOP A13 IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV AL,DL CMP AL,81H JZ A16 AND AL,0F0H MOV CX,0 MOV CH,AL ROL CH,1 MOV AL,DL AND AL,0FH MOV CL,AL ROR CL,1 ADD CH,CL MOV AL,CH JMP A14 A17: CMP AL,20H ;第六个开关实现从两边向中间流水 JNZ A0 A19: MOV AL,81H A20: MOV DL,AL OUT 92H,AL MOV CX,20000 A18: LOOP A18 IN AL,90H NOT AL CMP AL,BL JNZ A0 MOV AL,DL CMP AL,18H JZ A19 AND AL,0F0H MOV CX,0 MOV CH,AL ROR CH,1 MOV AL,DL AND AL,0FH MOV CL,