3.5" floppy drive question(s)
Roy J. Tellason
rtellason at verizon.net
Sat Oct 11 13:11:09 CDT 2008
On Saturday 11 October 2008 11:59, Phill Harvey-Smith wrote:
> There are a couple of problems however, most 1.44M drives are jumpered
> to operate as drive 1 only, and cannot easily be changed, this can be
> fixed however by swapping lines in the cable e.g. swapping 10 and 12
> will make the drive respond as drive 0.
Hence the twist in the cable...
> Also depending on your system, it may require a ready signal on Pin 34,
> most 1.44M drives supply disk change on this pin, however the couple of
> systems I have worked with that require this signal (Amstrad CPC,
> Spectrum +3), wiring the signal permenently to ground will do the trick.
I have somewhere several of those adapters that were suppled to convert the
pin-type connectors common on 3.5" drives to the edge connector common on
floppy cables supplied for earlier drives, and some of these at least have a
jumper on them that I would guess allows for selecting this. At least I know
that it does *something* with regard to pin 34 (Curtis, let me know if you
need one... :-).
> Note some of the older 1.44s may have jumpers to change the ID, and
> enable ready. I have some Teac FD-235F drives that are like this (they
> have a bunch of jimpers just to the left of the steper motor),
> unfortunatly the HF that you have does not.
I am going to have to look through the floppy drives I have on hand and see
which models they are and which might offer some flexibility and which
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