Hi Jan,

Have a look at http://www.merg.info/kits.htm . They have more uptodate
information on building your own DCC decoder. Even kits are available and
ASM files as well using the 16F628.

Regards

Harry (MERG member)

> -----Oorspronkelijk bericht-----
> Van: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
> Namens Jan van Dijk
> Verzonden: maandag 2 april 2007 11:37
> Aan: piclist@mit.edu
> Onderwerp: [PIC] Converting 16F84 DCC decoder to 16F628 (or 16F648)
> 
> Hello all,
> 
> I'm currently in the process of constructing a dcc decoder 
> for controlling a LGB train. I've found the scheme for a dcc 
> decoder at 
> http://technology.niagarac.on.ca/staff/mcsele/dcc.htm It's 
> based upon a
> 16F84 and the assembly code is also available:
> http://technology.niagarac.on.ca/staff/mcsele/decoder.asm
> Since the 16F84 is 'obsolete' I was planning on using an 
> 16F628 for the decoder... Would it work if I just re-compiled 
> the given assembly source to the 16F628 chip? Any special 
> things I should look in to when converting the program?
> 
> Also, the original scheme is based on a 8MHz crystal. I'm 
> planning on using a 20 MHz one... if I changed the rtcc 
> divider from 32 to 80, would that do the trick?
> 
> Of course, the best way to find out, it to actually build / 
> programm the chip, but I don't have all the parts yet, and 
> thought I would inquire so I might save me some troubles :)
> 
> Best regards and thanks in advance,
> 
> Jan
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> 


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