Re: VIA6522 bugs details

From: Groepaz <>
Date: Thu, 3 Jul 2014 14:32:25 +0200
Message-Id: <>
On Friday 27 June 2014, you wrote:
> howdy hackers!
> as some (or even most) of you probably know, there are some bugs in the
> VIA, most prominent being the infamous shift-register bug. in another
> attempt to improve emulation, i have started to research and collect
> related information - and was surprised that so little detail info exists.
> what i have found so far is here: (not much
> as you can see). i am most interested in:
> - what bugs do you know about other than the ones listed?
> - what exactly is the bug?
> - how does the bug show when writing software, and what is/was the proposed
> workaround? (this may give some more hints when other info is not
> available)
> as always, whatever comes out of it will be collected and made public in
> the VICE testprograms repository (and then, hopefully, fixed in VICE too
> of course
> :))

mmmh noone? so can put this on the "yet another mystery" pile? :(


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Received on 2014-07-03 13:00:02

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