newbie building a scratch-built computer

Dave McGuire mcguire at
Sun Aug 5 13:45:08 CDT 2007

On Aug 5, 2007, at 12:29 PM, Roy J. Tellason wrote:
>> The advantage over using EPROMs is that you can re-write the RAM  
>> as many
>> times as you like (EPROMS have a limited number of program cycles)  
>> and
>> rewrite it quickly. Unless your programming is a lot better than  
>> mine,
>> you will go mad if you have to wait 20 minutes for an EPROM to be  
>> erased
>> and reprogammed. each time you want to make a change!
> Unless you have a pile of EPROMs handy...   :-)

   Very true.  I know a few people who do EPROM-based development  
(myself included) and none of them has only one EPROM.  In a real- 
world situation, there's no delay...efficient workflows are easily  


Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007

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