Re: Ultimax questions

From: Michał Pleban <>
Date: Sun, 20 Oct 2013 19:33:30 +0200
Message-ID: <>

Gerrit Heitsch wrote:

> Take a look at the 74LS194. 4Bit shift-Register with serial in _and_
> parallel load and resettable. Should cover what you need if you use 2 of
> them.

Exactly what I had in mind.

There is one major drawback here - this technique will work only on a
real MAX. On C64 these lines have different meanings; in fact, instead
of CLK there is a DOT CLOCK line which will very quickly set the shift
regiser to all 1's (unless you play with $DF00, but you wouldn't). I
need to think on how to modify this for using in the C64, if that's even


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Received on 2013-10-20 18:02:00

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