Re: Difference between R65C02 and original 6502 (wrt 6509 emulation)

From: Mia Magnusson <mia_at_plea.se>
Date: Sat, 21 Apr 2018 23:18:18 +0200
Message-ID: <20180421231818.0000267c_at_plea.se>
Den Fri, 19 Apr 2019 18:43:55 +0100 skrev smf <smf_at_null.net>:
> On 19/04/2019 16:29, Mia Magnusson wrote:
> > I'd say that the important thing is to hide them from reads. It
> > would probably not matter if they listen to writes or not,
> 
> If writes also affect the bank then you would have to write to 00/01
> before switching to 6509 mode and that would also affect the ram,
> which I imagine would be a problem.

In '816 mode you'd do this write at $F0000/$F0001 or for that sake any
bank that don't contain any RAM used by the 8088 card.

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Received on 2020-05-29 21:28:49

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