Re: VC1541 with fast serial?

On 26/08/2019 13:02, groepaz_at_gmx.net wrote:
>
> you also need some extra synchronisation to eliminate the via bug with
> external clocking (which is basically the reason for why its not used in the
> 1541). i vaguely remember it being described in either one of the datasheets,
> or perhaps application notes.
Yes. Section 5.1 of the synertek datasheet

http://archive.6502.org/datasheets/synertek_sy6522.pdf

Someone succesfully tested this.

http://forum.6502.org/viewtopic.php?t=342#p2310

This would be my prefered solution, you might be able to use a GAL to do it.

You'll probably want more ram and rom in the 1541 though, so you can do
faster GCR conversion etc.