16 Jun
2014
16 Jun
'14
2:37 p.m.
On Jun 16, 2014 10:38 AM, "Chuck Guzis" <cclist at sydex.com> wrote:
Why not 9x1024? It can be done--I just processed a
few disks done just
that way.
Can you really cut the gaps short enough to do that reliably? I'd expect
to need really tight motor speed control.
I don't recall if you mentioned the controller
used in the Quay,
uPD765A
but formatting dissimilar-sized sectors on a track is
a pain in the neck
for the NEC 765;
Yes, probably more hassle than it's worth.
easy on a WD 179xx though.
Most everything is easy on those. Except formatting a disk with certain ID
field values betwen 0xF5 and 0xFF.
Another thing to consider is doing track-at-a-time
I/O. If you have the
memory, it really can speed things up, particularly if
you're using a 1:1
physical interleave.
The machine only supports 65KiB of RAM (64KiB DRAM and 1KiB SRAM), so that
would seriously reduce the TPA size.