Re: C64 MMU POC

From: Jim Brain <brain_at_jbrain.com>
Date: Mon, 8 Jul 2019 09:20:14 -0500
Message-ID: <81cc36bc-7598-382b-7acf-ffe568576009_at_jbrain.com>
On 7/8/2019 8:57 AM, Mario Kienspergher wrote:
>
>
> An idea one could steal from the FPGASID project:
>
> Only if you write some magic value (FPGASID: $65 and then $81) to a 
> certain register the other registers are mapped in.
> Otherwise the I/O area remains unchanged.
>
> This reduces the "abnormality" of the memory mapping next to nothing.

THat was my idea as well.  I use a sequence much like FALSH ROMs 
($55,$aa,$55...)

Jim

-- 
Jim Brain
brain_at_jbrain.com
www.jbrain.com
Received on 2020-05-29 22:36:07

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