Re: C64 MMU POC

From: smf <smf_at_null.net>
Date: Wed, 10 Jul 2019 22:39:58 +0100
Message-ID: <1db3caaa-8c5d-02fd-9118-850682484b1a_at_null.net>
On 10/07/2019 19:32, laughton_at_cyg.net wrote:
> Sorry to tease everyone -- it was the '816 I was thinking of.  My
> notion was to run it in parallel with the 6510, not to replace it.  In
> other words, the '816 address bus etc would connect to nothing, but
> during reads (code fetches) its data bus would have the 6510 data bus
> copied to it.  Then the oh-so-convenient VPA/VDA signals will reveal
> when the opcode fetches occur.

The 65816 can't even run all c64 code, let alone cycle exact. If you're
going to use a 65816 then you'd be better off just using the 65816 and
stop the 6510 from executing completely.

You could then be on your way to designing a SuperCPU clone, which
people would probably love.
Received on 2020-05-29 22:30:20

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