Re: C64C case production molds resurfaced

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:


http://codebase64.org/doku.php?id=base:detecting_6526_vs_6526a_cia_chips

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

  Gerrit



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