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Assembly help please

Discussion in 'Microcontrollers, Programming and IoT' started by Danno, Aug 20, 2016.

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  1. Danno

    Danno

    65
    2
    Aug 31, 2015
    Hi,
    Could somebody please help me understand what's going on in this subroutine, processor is a 6802.


    7198 ldx #$2000
    719B clr x0006
    719E tst $00, x
    71A0 bpl L71A5
    71A2 inc X0006
    71A5 inx
    71A6 cpx #$2005
    71A9 bne L719E
    71AB rts


    Is it some kind of timer circuit???

    Thanks in advance.
     
    Last edited: Aug 20, 2016
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