1 Feb
2014
1 Feb
'14
2:11 p.m.
Jules Richardson <jules.richardson99 at gmail.com> writes:
However, when hooking up a (good) 5.25" DD drive
(and using
"floppy=0,1,cmos") I consistently get I/O errors.
Are the jumpers on the drive set correctly for a PC? I had the same
problem when I was using a drive that came from a BBC Micro last year --
the PC was expecting the disk change signal to be inverted from the BBC,
so Linux wouldn't do anything with the drive until I'd fitted the
appropriate jumper:
http://offog.org/notes/archiving/minifloppies/
Dave Dunfield's ImageDisk boot disk includes the TESTFDC tool that'll
tell you what encodings your controller supports, which might be worth a
try:
http://www.classiccmp.org/dunfield/img/index.htm
Linux just identifies the FDC as a "post-1991
82077" (for which 250k
support is claimed), but I expect it's a reimplementation within a
larger I/O chip rather than a discrete FDC IC.
"lspci" should give you a better idea of what the chipset actually is. I
was able to find the datasheet for mine...
Thanks,
--
Adam Sampson <ats at offog.org> <http://offog.org/>