Re: 6502/6510 ROM selection daughterboard

From: Spiro Trikaliotis <ml-cbmhackers_at_trikaliotis.net>
Date: Sun, 3 Jun 2012 19:21:39 +0200
Message-ID: <20120603172139.GT13544@trikaliotis.net>
Hello,

* On Sun, Jun 03, 2012 at 05:58:32PM +0200 Michał Pleban wrote:
 
> I was thinking of another approach - a 6502 running side by side on
> the cartridge, executing the same code as the main CPU. IIRC, 6502
> and 6510 are cycle-compatible, so this could be done easily. So one
> could easily detect writes to $01 and set the flags appropriately
> without playing crudely with the PLA lines.

There was a project in the german magazine "64'er" that did exactly this.

Regards,
Spiro.

-- 
Spiro R. Trikaliotis
http://www.trikaliotis.net/

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Received on 2012-06-03 18:00:05

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