Free: Stack of Victor or Sirius floppy disks
ard at p850ug1.demon.co.uk
Wed Mar 2 13:31:11 CST 2011
> On 02/03/11 03:36, Fred Cisin wrote:
> > Send one to Philip. But, don't tell him what's special about the format
> > until he ferrets it out! :-)
> If memory serves, it's a GCR based format recorded in 9-zone Z-CLV.
> Constant bit density mode, in other words.
> Of course, the bloody technical reference manual is missing almost all
> the relevant figures, and provides no details about the GCR coding
> scheme other than the sync pattern (lots an' lots o' 1s -- how predictable).
I can tell you the controller PCB schematic is almost identical to the
relevant bits of the Commodore 8050 (not suprising, given the designer).
I have no idea if the contents of the encoder/decoder ROM are the same
though, and that you would need to know.
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