----- Original Message -----
From: "Daryl Sayers" <daryl@CI.COM.AU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, January 14, 2002 6:49 PM
Subject: Beginners 16C84 programming question


> I had a play with a 16C84 several years ago and I now need to make it do
> something. I am a real PIC beginner. My simple programming question is how
do
> I represent a byte out to the RB port. It seems my restriction is using a
> variable in the bsf op code. I manually did it by doing each bit but I am
> sure there is a more elegant way of doing it through a loop.
> I am using gpasm-0.9.14 alpha to assemble code.
>
>    movlw 0x01
>    subwf TmpByte,w
>    btfsc STATUS, Z
>    bsf   PORTB,0
>
>    movlw 0x02
>    subwf TmpByte,w
>    btfsc STATUS, Z
>    bsf   PORTB,1
>
> ......
>
>    movlw 0x80
>    subwf TmpByte,w
>    btfsc STATUS, Z
>    bsf   PORTB,7
>

You sure are taking the long way around! Why not just:
    movf    TmpByte,W
    movwf   PORTB
?
In your code you also fail to reset the port pin if STATUS,Z is 0...
/\/\/\/*=Martin

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