Hi Olin
When I installed my C compiler I had to use a different asmbler/linker the
one in the mcc18 dir as opposed to the one on the MPLAB which I use for the
18F6520 ( or in the microchip dir (the one I use for my 16F676).

In my mind if I don't precompile the module as a library just putting in a
separate module means that my C environment will still call the same
assembler/linker that its calling right now and I am right back with the
same trouble.


 
Phillip
Things should be as simple as possible but no simpler
 
 
 
Phillip Coiner
CTO, GPS Source, Inc.
 
 
Your source for quality GNSS Networking Solutions and Design Services, Now!
-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Olin Lathrop
Sent: Thursday, June 01, 2006 1:06 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] undefined label message for asm in C

Phillip wrote:
> Said another way do you mean write it in a different project make a
> precompiled library and link to it?

No, just a different module.  You can link MPASM and C18 modules together in
the same project.

> Can you show me a two or three line example of how to write a function
> directly in asm and to call it from my C routine?....assuming it is
> doable from my C compiler.

Since you can do anything you want in MPASM, of course you can use it to
create a subroutine that is callable from C18.  There is really nothing
special to do if the subroutine doesn't take arguments or return a function
result.  C18 passes arguments on the data stack, and uses FSR1 as the stack
pointer.  There is no need for me to go into the details here since they are
described in the manual.  What part of the description in particular are you
asking about?


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