The Gray-1 CPU made out of EPROMs

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rainwarrior
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The Gray-1 CPU made out of EPROMs

Post by rainwarrior » Mon Apr 17, 2017 2:28 pm

An interesting way to build a computer:
http://2x-1.net/ob/gray1/

psycopathicteen
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Re: The Gray-1 CPU made out of EPROMs

Post by psycopathicteen » Mon Apr 17, 2017 2:39 pm

Somebody should make an arcade game out of EPROMs

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Drew Sebastino
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Re: The Gray-1 CPU made out of EPROMs

Post by Drew Sebastino » Mon Apr 17, 2017 5:48 pm

psycopathicteen wrote:Somebody should make an arcade game out of EPROMs
I've got you covered :lol:: https://www.youtube.com/watch?v=rY90ghHx_SU

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Bregalad
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Re: The Gray-1 CPU made out of EPROMs

Post by Bregalad » Mon Apr 17, 2017 11:29 pm

Interesting ! ROMs are basically a programmable logic devices, the only difference is that they're purely combinational and have only fixed input and output pins (they can't be bidirectional and outputs have a common enable signal). So basically it'd be the same as doing it with PAL chips except it's even more limited.
Somebody should make an arcade game out of EPROMs
Since it's the bottleneck of available chips on the market, you should start by making a valable "PPU" with only EPROMs (and maybe a DAC for the composite video signal !), and that'd already be impressive. If a "real" CPU and sound chips are still needed it's still impressive.

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TmEE
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Re: The Gray-1 CPU made out of EPROMs

Post by TmEE » Tue Apr 18, 2017 1:39 am

Hahahah, naiss. That's something I have wanted to do with my EPROM stash for years but never got around to...

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