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sounds like you may have something declared as byte and using it as word so
it writes over the next memory location.
Just a first guess

----- Original Message -----
From: "Roger_4U"
To:
Sent: Saturday, December 08, 2007 7:03 PM
Subject: [piclist] Need Help Urgently - Mysterious Problem after adding
Function
> Hi Folks:
>
> I am up a creek, I have been working on some code for over a year and
> I am totally stumped with this last problem:
>
> Device: Pic16F88
> Chip OSC: 20Mhz
> Programmer: MeLabs USB Programmer
> Code is spread across two codepages. i.e Linker is being used.
> Number of Software Modules: 4 [3 in CodePage0 and 1 in CodePage1]
> Assembler/Complier: MPLAB IDE v8.00
> Serial speed: 57.6Kbps
>
> My problem is that the circuit stops working properly once I add a new
> sub-program (function) to CodePage0; and what is totally baffling is
> that even if I comment out the call in the main program to this
> function, the problem still persists. When I reduce the size of the
> function by say 7 statements, the serial portion, a LED switch, and
> the blinking LED, work as expected. However when I have all the code
> present, everything seems to be still working except the serial part
> of the circuit which starts sending out mixed up data.
>
> I have changed the chip, upgraded to the latest IDE, and still the
> same problem.
>
> What is going on here? PLEASE HELP - I feel like jumping ship and
> starting over from scratch with a different platform (e.g AVR).
> to unsubscribe, go to http://www.yahoogroups.com and follow the
> instructions
>



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I am using the PIC16 instruction set to write the code, and I am even
commenting out the call to the function. The code was working fine
for days until I added the now Not called function.

--- In p...@yahoogroups.com, "Jcullins" wrote:
>
> sounds like you may have something declared as byte and using it as
word so
> it writes over the next memory location.
> Just a first guess
>
> ----- Original Message -----
> From: "Roger_4U"
> To:
> Sent: Saturday, December 08, 2007 7:03 PM
> Subject: [piclist] Need Help Urgently - Mysterious Problem after adding
> Function
> > Hi Folks:
> >
> > I am up a creek, I have been working on some code for over a year and
> > I am totally stumped with this last problem:
> >
> > Device: Pic16F88
> > Chip OSC: 20Mhz
> > Programmer: MeLabs USB Programmer
> > Code is spread across two codepages. i.e Linker is being used.
> > Number of Software Modules: 4 [3 in CodePage0 and 1 in CodePage1]
> > Assembler/Complier: MPLAB IDE v8.00
> > Serial speed: 57.6Kbps
> >
> > My problem is that the circuit stops working properly once I add a new
> > sub-program (function) to CodePage0; and what is totally baffling is
> > that even if I comment out the call in the main program to this
> > function, the problem still persists. When I reduce the size of the
> > function by say 7 statements, the serial portion, a LED switch, and
> > the blinking LED, work as expected. However when I have all the code
> > present, everything seems to be still working except the serial part
> > of the circuit which starts sending out mixed up data.
> >
> > I have changed the chip, upgraded to the latest IDE, and still the
> > same problem.
> >
> > What is going on here? PLEASE HELP - I feel like jumping ship and
> > starting over from scratch with a different platform (e.g AVR).
> >
> >
> >
> >
> > to unsubscribe, go to http://www.yahoogroups.com and follow the
> > instructions
> >



(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )

--- In p...@yahoogroups.com, "Roger_4U" wrote:
>
> I am using the PIC16 instruction set to write the code, and I am even
> commenting out the call to the function. The code was working fine
> for days until I added the now Not called function.
>

Check ALL your lookup tables. Make sure you haven't pushed one so that
it is split across a code page boundry. If so make sure your address
calc compensates for crossing the boundry i.e. don't just add the
index to PCL.

make sure you havent pushed your ISR into another code page and that
you are saving and restoring PCLATH correctly.

Regards
Sergio Masci

http://www.xcprod.com/XCSB
.

to unsubscribe, go to http://www.yahoogroups.com and follow the instructions



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Just because you don't call it doesn't mean it isn't assembled, and this
new code didn't just cross a page boundary (one of the reasons I've
moved to AVR's, that antiquated page boundary crap.) Check to make sure
that something didn't move some other call to another page.

DLC

Roger_4U wrote:
> I am using the PIC16 instruction set to write the code, and I am even
> commenting out the call to the function. The code was working fine
> for days until I added the now Not called function.
>
> --- In p...@yahoogroups.com, "Jcullins" wrote:
>
>>sounds like you may have something declared as byte and using it as
>
> word so
>
>>it writes over the next memory location.
>>Just a first guess
>>
>>----- Original Message -----
>>From: "Roger_4U"
>>To:
>>Sent: Saturday, December 08, 2007 7:03 PM
>>Subject: [piclist] Need Help Urgently - Mysterious Problem after adding
>>Function
>>
>>>Hi Folks:
>>>
>>>I am up a creek, I have been working on some code for over a year and
>>>I am totally stumped with this last problem:
>>>
>>>Device: Pic16F88
>>>Chip OSC: 20Mhz
>>>Programmer: MeLabs USB Programmer
>>>Code is spread across two codepages. i.e Linker is being used.
>>>Number of Software Modules: 4 [3 in CodePage0 and 1 in CodePage1]
>>>Assembler/Complier: MPLAB IDE v8.00
>>>Serial speed: 57.6Kbps
>>>
>>>My problem is that the circuit stops working properly once I add a new
>>>sub-program (function) to CodePage0; and what is totally baffling is
>>>that even if I comment out the call in the main program to this
>>>function, the problem still persists. When I reduce the size of the
>>>function by say 7 statements, the serial portion, a LED switch, and
>>>the blinking LED, work as expected. However when I have all the code
>>>present, everything seems to be still working except the serial part
>>>of the circuit which starts sending out mixed up data.
>>>
>>>I have changed the chip, upgraded to the latest IDE, and still the
>>>same problem.
>>>
>>>What is going on here? PLEASE HELP - I feel like jumping ship and
>>>starting over from scratch with a different platform (e.g AVR).
>>>
>>>
>>>
>>>
>>>to unsubscribe, go to http://www.yahoogroups.com and follow the
>>>instructions
>>>



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