16 Jun
2014
16 Jun
'14
5:42 p.m.
On Mon, Jun 16, 2014 at 4:26 PM, Chuck Guzis <cclist at sydex.com> wrote:
I don't mean changing the address mark. If you want to format a disk with
a 177x/179x with sector numbers in the range of 0xf5 through 0xff, you're
going to have problems. Even the 1781 has that problem. The 765 doesn't.
On an 8" drive, I don't think it's a
problem. At any rate, Digital Group,
Octagon and Wave Mate used the 9x1024 track layout. I'd be more concerned
with an early (belt-drive, open-loop tach) 5.25" drive.
OK, I'll give it a go. Are there recommended gap lengths for that format
Most everything is easy on those. Except formatting a disk with certain ID
field values
betwen 0xF5 and 0xFF.
Just get yourself a WD1781 and pick whatever address mark set suits you. I've still got a couple
I know where I can get some. I've always wanted to try to use that to read
DEC and Intel M2FM formats.
Was there any published app note or the like for the 1781?