9 Aug
2013
9 Aug
'13
7:42 p.m.
On 08/09/2013 06:48 PM, Eric Smith wrote:
It typically wasn't done with GCR on 5.25 inch
floppies because the schemes
in use (e.g., by Apple and Commodore) weren' t using flux density as high
as the standard MFM format. (I'm not sure about the GCR on rt he Victor
9000.)
Sure, that figures. The point is that write precomp is pretty much
independent of the encoding scheme used, since you're looking at what's
coming out the encoder in all cases. I suppose one could try to apply
precompensation to FM, but it wouldn't make much sense, as there's
always (with the exception of address marks) a clock bit present.
But say, GCR and MMFM, sure.
--Chuck