Hi you all...
Maarten ter Huurne <[EMAIL PROTECTED]> wrote:
> >From an old PC, I got the following drive:
> TEAC FD-235HF
>
Sounds familiar somehow, I think it's a 720 K type...
> It has a huge jumper area (5 jumpers and 28 positions). So finding out
> what-is-what by trail-and-error is a not something I look forward to.
>
> My questions:
> - Does anyone have a description of which jumper position means what?
> - Does anyone have this type of drive working in an MSX? If so, please tell
> me your jumper settings, your MSX type and whether it's connected as
> A-drive or as B-drive.
There's only 2 things that should be needed, where jumper settings
are concerned:
a) Drive select, usually marked with something like "DS0 / DS1 / DS 2
/ D3" (number of Dx can differ), where "DS0" stands for A:, and "DS1"
stands for B: (ever seen a floppy drive C: on MSX?). If it should be
the A: drive, set it to DS0, if it's a second drive, set it to "DS1"
(=factory default)
b) Some MSX-machines require a 'ready' signal on pin 34 of the
floppy-connector. To avoid unexpected problems resulting from this,
look for a jumper named something like "DC / RDY" (sets DiskChange,
or ReaDY signal on pin 34). If you spot something like that, set it
to "RDY".
Other jumpers can usually be left alone. If things are not working,
you can try setting these differently. One at a time, no setting
should be able to cause permanent damage, so try anything. If no
effect is seen, set it back the way it was, and try another. If that
doesn't help after setting all jumpers present back and forth,
consider it a lousy diskdrive....
I found a Teac FD-235F (sounds a lot like it) in a box with trash at
my place, it's got jumpers named "FG" (forget this one), "D0" (A:),
"D1" (B:), "DC" (DiskChange, should be empty), "RY" (ReadY, should be
present), "IR" (?, leave it alone), and "MS" (?, rather not mess with
it either). "D2" (C:) & "D3" (D:) a bit further on, but not as
jumpers, just soldering pads. Maybe this helps?
Greetings,
Alwin Henseler ([EMAIL PROTECTED])
http://www.twente.nl/~cce/index.htm
http://huizen.dds.nl/~alwinh/msx/supturbo
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