21 Nov
2009
21 Nov
'09
1:24 a.m.
On Sat, 21 Nov 2009, Philip Pemberton wrote:
Has anybody bothered to checkout the innards of the first Tandy "Portable
Disk Drive" (for the Model 100)? It has been referred to as having "hard
sectors", but uses an ordinary 3.5" floppy.
The 3.5"
disk doersn't have an index hole in the sense that the other
floppies do. You can't have a 'hard sectored blank disk', for this
reason. I suppose it would be _possile_ to make a drive that produced
multiple index/sector pulses per vevolution, but I've never seen one.
That's effectively the question I was asking -- the discs don't support
it, so did anyone bodge a PLL onto a drive to do it?