4 May
2010
4 May
'10
2:17 a.m.
Nico de Jong wrote:
From: "Chuck Guzis" <cclist at
xxxxx.com>
Norsk Data supported a couple of formats. For example the 3010 floppy
controller card supported
- IBM 3740 128 bytes/sector 26 sectors/track
- IBM 3600 256 bytes/sector 15 sectors/track
- IBM System 32-11 512 bytes/sector 8 sectors/track
I think that earlier or later cards supported other formats too but to
find that I have to dig into the pile of dead tree media.
... but the directory structure, or lack of it in Sintran III is a
totally different story.
:-)
/G?ran
Although I do have an odd case before me. The
subject floppies are
from a Schlumberger wafer tester. What was sent were hard-sector (32
sector) floppies, but the data is definitely soft-sector (i.e. the
sectors don't line up with the sector holes and use address marks
(i.e. A1 with a missing clock) to demarcate sector headers and
sector data.) My guess is that the drive was set up to handle hard
sectored media., so that the controller still sees only one index
pulse.
Some years ago I came across an 8" Norsk Data floppy. The analyze
software called it a IBM 374x, but the data I read was gibberish.
A closer look showed that track 0 was indeed like a 3741. One file was
present. OK so far.
It then showed, that this 1 file was formatted as a normal MS-DOS
directory. I managed to dump this directory to a DOS formatted floppy,
and voila, the data was saved.