6 Dec
2010
6 Dec
'10
2:31 p.m.
If the geometry is really a mystery (I don't think it is), I do have
a program I wrote some years back to determine the geometry of any
drive, IDE, ESDI or MFM/RLL. The former two by issuing an IDENTIFY
command; the latter by a binary-search type of approach. As long as
the MFM drive is formatted and readable, I can determine the actual
geometry--it uses direct I/O port access (either PC/XT or AT-style
controllers) and does not rely on the BIOS.
(With a nod in Tony's direction) This obviously is for PCs and
compatibles, sorry.
--Chuck