From: David Wood (jbevren_at_starbase.globalpc.net)
Date: 2005-11-11 21:22:28
I know its offtopic and we all love to hate apple, but I read some
interesting information in a hardware reference book. There's a GCR nybble
exactly every 32 cycles. There's no byte ready line or other hint that a
nybble was read. Just read, and -exactly- 32 cycles later, read again or
miss a nybble. :)
The 1541 uses a variable bit clock, so it can vary, but the smallest sector
count matches the evil system at 16/track, so it's probably not far off. ;-)
-jbevren
On Fri, 11 Nov 2005 silverdr@inet.com.pl wrote:
>
> On 2005-11-08, at 10:33, MagerValp wrote:
>
> >
> > No, there aren't enough cycles to decode to nybbles in realtime,
>
> Could you remind me how many of them are there in the worst case?
>
> --
> Apple products look like they come from designers that Ikea wish they
> could afford. - Ian Brogan
>
>
> Message was sent through the cbm-hackers mailing list
>
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.