9 Aug
2013
9 Aug
'13
6:41 p.m.
On 8/9/2013 8:35 PM, Chuck Guzis wrote:
The actual amount of precompensation is somewhat
arbitrary and differs
from vendor to vendor. Floppies usually use a unit of about 1/16 of a
bit cell, or, in the about 125 microseconds in the case of a 500KHz data
rate.
Commodore had options to pass to Paula, either 140ns or 280ns. Which
was either 1/7 or 1/14 of the normal 2 microsecond bitcell....which
would be a 500khz data rate.
@Chuck: I'm certainly in no position to correct you, but did you mean
125ns here?
I'll have to look up how exactly the Amiga does it.
Thanks,
Keith