Re: Questions about 8563 and 8568

From: Michał Pleban <lists_at_michau.name>
Date: Mon, 25 Mar 2019 11:40:09 +0100
Message-ID: <5C98B009.8010001@michau.name>
Mia Magnusson wrote:

>> * What is the purpose of the CCLK pin, which is unconnected in both
>> C128 and C12DCR?
> Hook up an oscilloscope and check yourself!

Unfortunately I have no C128 here; in fact I have never owned one, so my
knowledge of the system is rather limited :(

> It might be a "color clock" intended for composite generation, and if
> so it would most likely need a suitable clock frequency that's some kind
> of multiple of the color frequency.

I found some online docs claiming that this is "character clock". So
maybe it's an output which is activated at the beginning of every
character drawn on the screen?

Regards,
Michau.
Received on 2019-03-25 12:02:11

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