I would check my definitions.  If you halt at a BSF/BCF in simulator it's
most probably
just a bad definition pointing wrongly.

If it halts in real board only it may be so simple as you setting wrong pin,
thus shorting out power or such.

Just ideas, I really haven't got any real clue...

    KreAture

----- Original Message -----
From: "Debbie Hynes" <debbiehynes2002@YAHOO.COM.AU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, January 26, 2003 4:55 AM
Subject: [PIC]: Program halts on bsf/bcf - weird?


> PICers - I have this code for a 16F84 that _should_ be pretty
straightforward. It loops around, looks for a bandit on RA4 (connected to IR
detector) fires camera if bandit is found. Trouble is the program freezes
when it it bcf/bsf's PORTB.
> Does it in ANIMATE on MPLAB (5.40) and also locks up when transferred to
an actual PIC on breadboad  :(
> I reinstalled Win98 a few days ago - any gotchas there?
> Never had this problem before - ideas?
> Thankz - Debbie :)
> shutdown clrf    flags
>          bsf     POWER         ;Camera power is OFF
>          bcf     flags,CAM     ;Flag that power is OFF
>          ;sleep                Turn off and await interrupt
>          nop
>          call   takepic    ;TEST FIRE    ;Commence from here after
interrupt
>
>
>          bsf    POWER         ;Camera power is OFF. Active LOW
>          bcf    flags,CAM     ;Flag that power is OFF
> check    btfss  flags,HUNT    ;Still in hunt mode?
>           goto  shutdown          ;No  - then quit
>          call   watch                 ;Yes - look for a bandit
>          btfss  flags,BANDIT    ;Is a bandit present?
>           goto  check               ;No  - keep checkin'
> loop01   bcf    POWER        ;Yes - power up the camera. Active LOW
>          bsf    flags,CAM       ;Flag that power is ON
>          CAMWAIT               ;MACRO - Let the camera stabilise ~5 secs
>          call   watch              ;Look for bandit again
>          btfss  flags,BANDIT  ;Still there?
>           goto  check-2         ;No  - go back to to checkin'
>          call   takepic            ;Yes - still there so take a picture
>          CAMWAIT               ;MACRO - Wait till camera settles
>          call   watch
>          btfss  flags,BANDIT  ;Is the bandit still around after the shot?
>           goto  check-2         ;No  - he's gone so go back to checkin'
>          goto   loop01           ;Yes - still there so get ready for
another shot
>
>
>
> ;CONSTANTS Definitions
>
> CONFIG_B  equ b'00011001'        ;TRIS CONFIG IS b'0001 1001'
> #DEFINE  POWER   PORTB,CAMPWR
> #DEFINE  PICTURE PORTB,SHOOT
>
>
>
>
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