Using the CP/M FAQ I built a 34 to 50 pin
converter. A couple of notes:
1) read the whole FAQ. The wiring
instructions in Q14 don't take into
account the IBM-PC "floppy twist".
Q16 gives the wiring that worked for
me. Spent an hour scratching my
head on that before I read further.
Primary indicative behavior: seeks
with no head load, software reporting
access attempts with no head load.
2) The Radio Shack General Purpose
Component PC Board (Cat. No.
276-168B) makes a great platform
to build the converter on. Took me
about an hour to solder it up.
3) There seems to be a bug in 22DISK
versions greater than 1.31. The directory
read code does not seem to use the
seek delay. Either that or it simply
misses a head step. It always reports
cylinder 2 read errors. Despite this, it
can format, read and write just fine. It
just can't display directories. Spent
another two hours on that. BTW older
versions of 22DISK can be found with
FTP searches, sorry I don't remember
where I got 1.31 (I downloaded 5 different
versions from different sites).
Bill Sudbrink
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