I have emulation tools for both of these. I have an "OLD" parallax emulator as well as a picmaster that both do these. I never tried on my ICE2000 but that should work too. I did lots of projects with these parts when I started consulting with Microchip parts. Not sure what it would take to get back and running with this but would also be willing to quote on a project with a solid spec. I did a series of building strobes using the 54 and the original Black Flag Light on my web site uses a 54 and 57 that run the remote and the sign while communicating serially between the two.
Larry
http://www.mchipguru.com


---- Olin Lathrop <olin_piclist@embedinc.com> wrote: 
> James Newtons Massmind wrote:
> > I've been sucked into an old project with 16C54 and a 16C57 on board
> > and the code is just... Well, lets just say Olin would probably be
> > violently sick if he had to look at this. It was written then modified
> > to hit a moving spec and then patched by at least two different people.
> > Pure hell.
> >
> > ...
> >
> > Trying to figure out what is going on in this code is just beyond me.
> > Bad thing have happened inside my brain as a result of trying.
> >
> > ...
> >
> > It isn't worth re-writing the old PIC code.
> 
> Are you sure?  I just checked the ancient scrolls, and the 16C54 only has
> 512 instructions.  Starting with the spec and a clean slate might be exactly
> the way to go to get to the end result more quickly, economically, and with
> more confidence.  Just trying to understand the existing code alone would
> probably take as long or longer than just creating new code to match the
> spec.
> 
> Is the new code going onto existing boards with the old chips on them, or
> newly manufactured boards of the old design?  If the latter, then you could
> substitute a 16F627A for the 16C54.  It has the same pinout, is easier to
> develop with, has more memory, and most likely costs less.  Developing for
> the 16F627A family is easy because it is supported by the ICE-2000.
> 
> If you've got a good spec, I can give you a fixed price quote for developing
> the firmware on a 16F627A.
> 
> > So: Is there a PIC that has ICD capability that is a pin for pin
> > replacement for the x54 or x57 other than the SX?
> >
> > Is there a reasonably low cost way to emulate a x54 or x57?
> 
> The '54 is no problem, but you're screwed with the '57.  That 28 pin
> footprint is in the same "Huh?  We never did that" catagory as the PIC 17.
> 
> Again, it comes down to what you are trying to preserve, the cost of that,
> and the cost of updating.  You could make an adapter board to emulate the
> 16C57 footprint from a more modern processor, like 16F876A or 18F252.  Or
> you could respin the board changing only the processor pinout.  Or you could
> go straight to the new design and save money trying to make the dinosaur hop
> along a few more paces.
> 
> 
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