Re: C64C case production molds resurfaced

From: Gerrit Heitsch <>
Date: Wed, 04 Mar 2015 21:19:00 +0100
Message-ID: <>
On 03/04/2015 09:11 PM, Spiro Trikaliotis wrote:
> It seems so. At least, the 6526A all have the difference that their
> timer fires one clock too early w.r.t. the "normal" 6526. Although I am
> currently not exactly sure if the 6526 is too late, or the 6526A is too
> early with respect to the documentation.

Here's the detection code:

Looks like I had it reversed with respect to the timer... the older one 
triggers later.


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Received on 2015-03-04 21:01:13

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