31 Dec
2012
31 Dec
'12
9:51 a.m.
> If that wasn't more than you want to know
about it, or if you
> are offended by the oversimplifications, we could go through
> the reasons and structures of every part of the IBM/WD
> soft-sector disk format.
On Mon, 31 Dec 2012, Christian Corti wrote:
You misunderstood me. I know exactly what that all
means. But you're
right, I was mistaken IAM for IDAM.
No problem with that! YOU seem to know what you are talking about.
But, there are some others here who are unfamiliar with that
track structure and reasons for address marks, and I just
naturally slipped into part of my (3 hour!) class lecture,
that starts with FM, and goes to RLL, with detailed
examination of the reasons behind the IBM/WD track format.
There also seemed to be some conflation of index pulse (hardware)
and Index Address Mark (software and format). BOTH of which can
complicate reading weird alien disks,