Re: 2764 -> 2364/68764 adapter

From: silverdr_at_wfmh.org.pl
Date: Tue, 12 Jul 2016 18:49:00 +0200
Message-Id: <7053E499-6B05-4416-809C-12C9A99FCC9C@wfmh.org.pl>
> On 2016-07-12, at 18:34, Gerrit Heitsch <gerrit@laosinh.s.bawue.de> wrote:
> 
> On 07/12/2016 06:03 PM, silverdr@wfmh.org.pl wrote:
>> There are various adapters for replacing 2364 mask ROM with a JEDEC compatible EPROM. What about the other way around adapters? Has anyone got something for putting the 2364/68764 into a 2764 EPROM socket?
> 
> It should be straightforward to make one from 2 Sockets...

Right - yet before I start making one, I thought someone could have done it before. And I'd prefer a PCB based one.

> There is one exception though, the 2364 has 1 chip select signal, die 2764 has 2 (/CS and /OE). So you'll need an OR gate to tie them together.

I guess most applications use either both lines shorted or _CS alone, but to make it the way we like doing things (no unnecessary shortcuts) an OR gate would be needed indeed.

-- 
SD!


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Received on 2016-07-12 17:01:14

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