Re: CIA 6526 vs 8521

From: Gerrit Heitsch <>
Date: Sat, 07 Mar 2015 09:19:33 +0100
Message-ID: <>
On 03/05/2015 11:24 PM, wrote:
> one of my C64s had a 6526(not A or B) with "new" behaviour - that was what
> made me investigating this issue some more back then (until then, i only saw
> 6526A with that behaviour myself as well) :)

If you still have that, could you please check that again? I have a C64 
where the stamp on the chip is '6526', it is seen as '6526A' by the 
software (means new behaviour). But when you take a closer look you  see 
a single 'A' faintly stamped onto the chip about more than a cm away 
from the rest. A photograph is available.

So far I haven't seen a 6526 made after the end of 1986 that wasn't also 
stamped 'A' or 'B'.


       Message was sent through the cbm-hackers mailing list
Received on 2015-03-07 09:00:45

Archive generated by hypermail 2.2.0.