Programming Delco EPROM's.

[CSH-HQ]

>From time to time, I've had some never erase.  Maybe the Erazer isn't the 
best, buut it does 99% just fine.
2742A 128s256s, just some seem almost perminent.



>I never have had much luck programming the original delco chips from
>the 7148 boxes. Maybe once in a while I may get one to take. (if I try
>about 10) I don't know what chip to use, but usually set my ROMMAX up
>with the generic 2732A algorythym. Sometimes it works, sometimes not.
> I have my best luck just pitching the delco chips and using the Intel
>2732A's . They even self ident in my programmer, where as most other
>chips will not.
>
> Good luck!
>
>Richard Wakeling wrote:
>> 
>> Hi Ross,
>> 
>> The program speed I use for most of the Delco eproms is
>> INTL (1ms retry intelligent). Its a little slow but seems reliable.
>> The computer I use for programming eproms is an old 386 running at 40
>> MHZ. I have heard that the faster pc can cause problems when burning
>> eproms.
>> 
>> Cheers Richard.
>> 
>> Ross Myers wrote:
>> >
>> 
>> > Mmmm, not where I was heading, I ment each manufacturer has a programming
>> > algorithm for their EPROM's, i.e. AMD recommend 12.75V @Vpp, and 
programming
>> > pulses of 100uS. What about the Delco I.C's?.
>> >
>> > Bye
>> >
>> > Ross Myers
>
>-- 
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>Dan Smith      84 Regal   12.03 at 110.45     GSCA# 1459
>St.Charles, Missouri 
>mailto:morepoweral at tetranet.net               
>http://www.tetranet.net/users/morepoweral
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