Re: Hardware emulation of 6509 using 6502?

From: David Holz <david.holz_at_grindwork.com>
Date: Wed, 8 Nov 2017 11:06:44 -0700
Message-ID: <5ed28fdb-e1a0-4085-3b54-742dd44fd2be@grindwork.com>
On 11/08/2017 09:13 AM, Michał Pleban wrote:
> I suppose it's done the same way as on the 6510 - how does it look there?
On writing to 00/01, the 6510 enables a Write on the bus but doesn't
assert the data pins. In the C64, the net effect is that the lingering
prior data value from the VIC-II's bus phase will get written to those
RAM locations.

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Received on 2017-11-08 19:00:02

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