Qumetrak 242 drive
cctalk at randy482.com
Tue Mar 15 16:42:14 CST 2005
From: "Stefan" <birs23 at zeelandnet.nl>
Sent: Tuesday, March 15, 2005 4:17 PM
> At 20:11 15-3-2005, you wrote:
>>>Hmm so, am I correct to think I could connect this quite simply to a
>>>FDADAP floppy disk adapter ?
>>>Would I need anything else ?
>>What are you trying to do with it?
> I have whole piles of various 8" floppies and I just want to read them, I
> dont perse need to write anything (nice to have but not necessary).
>>Buy a catweasel mk4.
> Was planning on buying one already so.
>>Find an older PC, many handle FM just fine but only trial and error will
>>let you know. Some older add-on cards work with FM including some Adaptec
>>ISA SCSI controllers with a floppy disk port.
>>It may help to build a list of systems/boards that handle FM. I use a
>>Compaq Prolinea 575e (P100).
> Have plenty of old controllers so should I have FDADAP I could perhaps
> make a list of which work and which dont. Hmm and ehmm, P100 old ? :)
>>You will need a 34 to 50 pin cable. The pin-out is available on my
> Well the FDADAP should also take care of that shouldn't it ?
If you already have the FDADAP then it's done, many 8" drives don't need
TG43 (and none if you only want to read).
If you don't already have an FDADAP you may not need it often just a 34 to
50 pin cable does it.
Older 8" drives (funny to call one 8" drive older than another) needed a
signal to know when it was writing past track 43 for reduced write current.
Later drives were "smart" enough to know for themselves. This only applies
to writing during reads this is ignored.
The FDADAP has a PIC that keeps track of the current track to know when to
assert (ground) TG43, for $40.00 it handles more drives than just a cable
when writing plus the wiring is done for you.
More information about the cctalk