Re: VIA shift register

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Thu, 10 Jan 2019 16:32:38 +0100
Message-ID: <CAESs-_wSGOLd=AVEErj24rzG2jA44ELTqUUAbcFHfmOu6d8stw@mail.gmail.com> 
On Thu, Jan 10, 2019 at 4:23 PM smf <smf@null.net> wrote:
>
> On 10/01/2019 08:11, André Fachat wrote:
> > I know this solution, but IIRC this prevents bidirectional operation
> > without extra direction control.
>
> Don't the c128 & 1571 have extra hardware for direction control on the
> 6526 ?

the 1571 surely does (LS241), the 128 probably not (afair).
But both the 1571 and C128 use 6526's serial shifter, so they aren't
affected by 6522's bug.

Frank
Received on 2019-01-10 17:02:10

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