newbie building a scratch-built computer

[Chuck Guzis]

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?

Cheers,
Chuck