Re: New CBM-II discoveries

From: smf <smf_at_null.net>
Date: Mon, 25 Jun 2018 09:24:28 +0100
Message-ID: <f4f0a182-dca1-5732-45c1-6ccba66f25d3@null.net>
On 24/06/2018 02:32, Steve Gray wrote:

> you probably need to repeat the same draw command with a different plane selected corresponding to the on bits of the desired colour.

Using one port on the 6523 you can select which (any or all) of the 
drams will receive write strobes.

The data in on each chip has an or gate, which is fed by another 6523 port.

There is some RMW stuff going on that I don't understand.

It is likely you can draw colour in one operation.
Received on 2018-06-25 11:00:06

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