GM 2732 won't program

[DC Smith]

Ludis,
 You may get luck on a few, but I've gotten to the point that I don't
even try to program the Gm proms. I am a much happier person when I
pitch em and buy intel 2732's.
 I used to use a generic algorithm to do the GM proms, but that's been
so long ago, that I forgot what programming voltage worked.
 I buy used intel chips and erase em. Haven't gotten a bad one yet.
(knock on wood).. My burner even auto identifies them for me. :)

 I hope this helps a little.. just my way of doing it..

 Ludis Langens wrote:
> 
> Has anyone had problems programming GM 2732 EPROMs?  I tried to make
> some minor changes to the EPROM of a 1992 305 TBI.  The EPROM erased
> fine, but my programmer can't write to it.  After several tries, one
> byte programmed:  The byte that should have gone to 0x000 ended up at
> 0x800.  I ended up using a 2732A that I had lying around.
> 
> I tried programming voltages of both 21 and 25 volts.  Might the chip in
> question need 12.5?  My programmer doesn't support reading out the chip
> manufacturer code.  So I can't check the exact programming needed by
> this chip.  This GM EPROM probably was made by NatSemi.
> 
> Incidentally, I have an old 2732B that I've never been able to program
> either.
> 
> --
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/

-- 
***********************************************************************
Dan Smith      84 Regal   12.034 at 110.44     GSCA# 1459
St.Charles, Missouri 
mailto:morepoweral at tetranet.net               
http://www.tetranet.net/users/morepoweral
***********************************************************************