> > > IIRC, RS used pin 32 as drive select 3 (the fourth drive), although most
> > > everyone else used it as side select for double sided drives. Since RS
> > > used "missing pins in the cable" for drive select, and shorted pins
> > > 10,12,14, and 32 together on each drive, ...
> > > If you used aftermarket stuff, it was no big deal. But if you used almost
> > > all RS stuff, then it would require a jumper wire on the controller to
> > > connect side select instead of DS3 to pin 32, a non RS cable, NOT using 4
> > > drives on the cable, and cutting traces on all RS drives on that cable to
> > > do drive select at the drive instead of in the cable (at least for DS3)
>
> On Sun, 7 Oct 2001, Eric Dittman wrote:
> > This was only on the Model I. The Model III and 4 didn't have this problem.
>
> Not for INTERNAL drives. But the drives sold by RS for EXTERNAL use for
> model 3, etc. were the same drives, with the same perverted jumpers. If
> you were to use RS cable, and/or include a RS drive along with a DS one on
> an external cable, then you DID have to deal with them shorting side
> select to DS in the RS drives.
The external RS cable I had just had missing connectors for the drive select
positions and the drives were jumpered for all the drive select lines. I
used a normal external floppy cable along with a DSDD drive and a SSDD RS
drive without any problems on my Model 4. All I had to do was open the
jumpers for the wrong drive position. The RS external drives I had didn't
have the side select shorted to drive select in my RS drive. There were
a couple of revisions of the RS external drives. Maybe the ones you had
were the original drives that were sold for the Model I?
--
Eric Dittman
dittman_at_dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
Received on Mon Oct 08 2001 - 12:21:01 BST