Saturday 16 August 2014

DC Motor Interface in 8086

;8086 Interfaced with 8255 and DC Motor
        OUTPUT 2500AD
.ORG 2000H

DATA SEGMENT
LIST DB FFH,80H,80H,80H,80H,80H,80H,00H
DATA ENDS

CODE SEGMENT
    ASSUME CS:CODE,DS:DATA
START:
        MOV AX,DATA
        MOV DS,AX
        MOV SI,OFFSET LIST
        MOV CL,08H
        MOV AL,80H
        MOV DX,FFE6H
        OUT DX,AL
L1:
        MOV AL,[SI]
        MOV DX,FFE0H
        OUT DX,AL
        CALL DELAY
        CALL DELAY
        CALL DELAY
        CALL DELAY
        CALL DELAY
        CALL DELAY   
        INC SI
        DEC CL
        JNZ L1
CODE ENDS
END

DELAY:

        MOV BX,FFFFH
L3:
        DEC BX
        JNZ L3
        RET

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