>All the code routines I've found so far have either been in 'C'
>or had lots of bells and whistles attached. If I have to spend
>a few weeks learning 'C' then I will but thought I'd pick your
>wonderful brains first.

IIRC Microchip supply a 'bog standard' USB serial module in C18, and it 
sounds like that is what you have been looking at.

I would get the free demonstration copy of C18, and compile that module as a 
linkable module, and possibly also get it to do an ASM printout, if that is 
possible, and work from there.

But my memory of looking at the C18 code that is supplied with C18 was that 
wouldn't be too hard to work out what it would compile to in terms of 
assembly output - but then I didn't look at a USB interface module ;)

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