6 Jun
2007
6 Jun
'07
4:17 p.m.
There are some NEC and Mitsubishi 3.5" drives
that have a fair number
of additional signals on the odd-numbered connector pin side--usually
used on CNC and some lab equipment on 9801-series architectures.
When replacing these, we've found that any old 3.5" drive won't do--
an exact replacement is necessary.
I guess I should have been more specific... the information I posted
was specifically about the setup you are likely to find in PC drives.
There are lots of variations in possible drive types if you open up
to "anything", but I didn't (and still don't) feel that discussing all
the things you are not likely to see on a PC would make the water any
less muddy for those guys who are trying to figure out what they need
to do to characterize their PC FDC.
I'm surprised no one mentioned 3.5" DSED
testing.
Neither TESTFDC nor IMD support ED, simply because I don't have an ED
compatible drive - I don't think I've ever run across one. If I can't
test it, I can't reliably implement it (anyone want to send me a drive? :-)
I also don't find ED very relevant to archiving vintage computer diskette
images - are there any systems in need of such attention that use ED as
their standard disk format?
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html