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From: jpq@laue.ms.nwu.edu (John P. Quintana)
Newsgroups: sci.electronics
Subject: Re: Search for a Microprocessor
Message-ID: <1991Mar5.172506.13449@casbah.acns.nwu.edu>
Date: 5 Mar 91 17:25:06 GMT
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In article <4660006@hpfcdc.HP.COM> kingdom@hpfcdc.HP.COM (Mike Kingdom) writes:
>>Unless this is intended as a learning project, consider using a "toy" 
>>personal computer... something like a Commodore Vic 20 would be perfect.
>
>Not only that, but you could pick up an IBM XT motherboard for $30 surplus
>to use as the central processor. Then you could do the development on a
>PC, test it on a PC, etc, then burn a ROM for the $30 mother board. That
>would limit your hardware development and testing to the extra control
>devices you were getting from Radio Shack. Just a thought....

If you decide to go this route, you can even get the listing for a ROM
bios from simtel since you will need to set up the DMA stuff to do memory
refresh.  Many ROM bios's will not work if they do not see a keyboard
attached.

- John