Re: Quantum Hard Drive jumpers - what are they?

["Seth D. Kadesh" <thes+@CMU.EDU>]

I've been through all this....

<KCR103@psuvm.psu.edu> writes:
> I was curious what all the jumper pins on the underside of a Quantum Pro
> 40 Meg hard drive were.  They are in two groups of three:
> SS EP WS     and     A2 A1 A0
> 
> It seems that the A2, A1, and A0 select the SCSI ID since they were connected
> to the push button.  Do the other buttons have something to do with the
> capacity of the drive?

Nope.  The EP jumper enables parity checking.  The SS enables a self
seek test (if this is enabled when the drive is turned on, you will
hear the drive constantly seek across the entire disk).

Damn.  I forgot what WS does.  It might tell the drive to wait and not
spin up immediately.

None of these should be set when connecting to an Apple.

  Seth ---> thes+@cmu.edu		It is not enough to watch.
"I said 'Forget Topsoil, Think Tinfoil, There's tons of kids who want
to get tanned.'" - Think Tree