Re: C64 MMU POC

From: Michał Pleban <*lists_at_michau.name*> Date: Sun, 22 Sep 2019 13:39:55 +0200 Message-ID: <5D875D8B.8060209_at_michau.name> · lists_at_michau.name

Hello!

Jim Brain wrote:
>   * Not sure how to hide the registers under some other IO, like SID
>     mirrors or such, as any write will bleed through to the SID, unless
>     IO is mapped out (and, I think memory write enable is not strobed
>     when you are in IO space, but I could be wrong.  Either way, hiding
>     under IO means essentially you'll have to bank IO out to use.  I'm
>     not sure that's useful.

SID uses only registers $D400-$D41C, so you could reuse $D41D-$D41F
without any worry that the writes do anything to the SID.

Regards,
Michau.