21 Mar
2005
21 Mar
'05
4:21 a.m.
Pete Turnbull wrote:
On Mar 20 2005, 19:20, Bill Sudbrink wrote:
Ah, yes, in each of my tests, the unpowered drive was set for
DS2 (drive B) and TM (termination) and was at the end of the
cable. But, I thought that the termination was to ground?
After a good bit of
trying to figure out what was wrong, I discovered that the
+5 volt pin in the power connector I was using for the #2 (B)
drive had pushed out of the nylon plug so that the drive was
unpowered. Having either of the drives unpowered on the cable
caused the other drive to screw up. The two drives cooperate
just fine when both have power. I don't remember ever seeing
this kind of problem before... I seem to remember having unpowered
drives hanging off of cables with no ill effects. I guess that
some of the signals (write gate for instance) must be getting
pulled low by the unpowered unit. Is this normal floppy
behavior and I'm just remembering wrong?
Usually that's OK. Is perhaps the one without power also the one with
the terminators, or do neither have terminators?