Re: 6502/6510 ROM selection daughterboard

From: Michał Pleban <>
Date: Tue, 05 Jun 2012 08:45:20 +0200
Message-ID: <>
Hello! wrote:

> I don't see this as a deal breaker type of problem. The same applies to
> ROMs. Yet people exchange them or replace with EPROM adapters, etc.

That's a good point. Well, if we decide to go this route, I don't see 
any problems in doing this type of extension. I can do it, actually.

Plus, the character ROM replacement can then be done simply by 
un-socketing the CHAR ROM chip, and placing a single wire from the CS# 
line to the CPU extension board (assuming the CHAR ROM is socketed too).

> Could you maybe publish it? On zimmers for example?

Yes. I designed a PLA replacement circuit, and I intend to read and 
decode every PLA that comes into my hands :-) I am missing only the 8296 
now, plus waiting for the 1551 to arrive from When I have all 
the stuff ready, I will publish it.


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Received on 2012-06-05 07:00:12

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