9 Aug
2013
9 Aug
'13
3:46 p.m.
On 8/9/13 2:21 PM, Philip Pemberton wrote:
I haven't seen any NSC floppy appnotes - I'm
aware of a Winchester disk
application note (which I might have somewhere) but not a floppy disk one.
that was probably what I was thinking of, with the precomp PLA shown
take a look at US patent 4334250 and 5187614.
I've never really looked at this, since I've never worried about low level writing
of floppies.
I suspect Chuck Guzis is very familiar with all of this. I also thought that on floppies
precomp
was only applied after tk 23 on 5" and 43 on 8"