newbie building a scratch-built computer - test-drb@ccmp.vtda.org

9 Aug 2007

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Subject: Re: newbie building a scratch-built computer
   From: "Chuck Guzis" <cclist at sydex.com>
   Date: Thu, 09 Aug 2007 09:37:12 -0700
     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>

On 5 Aug 2007 at 17:21, Allison wrote:

  Works for me.  The larger Eproms like 27128,
27256 and larger 
 I have loads of from old PCs that were junked.  A ready supply 
 of fast and large (often CMOS) eproms make it easier to do that.
 Though I had to mod my Prommer to do parts larger than 27256
 the code upgrade was easy. 
....but the OP had neither eraser nor programmer for the things--and 
that was my point.  Why bother using slow, obsolete parts when there 
are better alternatives available? 
Two reasons, cost and availability.

Allison

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Cheers,
Chuck