26 Jul
1998
26 Jul
'98
11:20 p.m.
< I wonder if it's the cable? (As is, the Kaypro supports two drives (SA4
< equivalent). The original owner bought a little hardware thingie that d
Advent Turborom drivr personality board.
< So I bought a new cable. It has that stupid half-twist, so I'm wonderin
< to coax my system into working with the new cable. I think I understand
< situation from the point of view of the drives (both drives are jumpered
you cant. IT swaps a few lines around and will confuse the mess. I doubt
the original cable is bad. More likely if the drives are really SA400(l)
the positioner has slid from the notch it follows in the cam.
< #1, and some pins are exchanged: 10 <-> 16, 11 <-> 15, 12 <-> 14).
< But doesn't the computer have to cooperate in this farce? That is, woul
< have to reprogram my BIOS to mess things up in the same way as the IBM P
< hardware, so that the drive cable can do its part and thus it all ends u
< (sort of) working?
it's not a pc, no progrmming option. The half twist was so two identical
drives would work without changing jumpers. Everyone else made you change
jumpers.
Allison
27 Jul
27 Jul
8:03 a.m.
< I wonder if it's the cable? (As is, the
Kaypro supports two drives (SA4
< equivalent). The original owner bought a little hardware thingie that d
Advent Turborom drivr personality board.
No, the machine doesn't have a TurboRom. The thingie is by Micro Cornucopia.
It fits over the pins on the mainboard; it has some traces to a new set of
pins, plus an IC or two (probably simple ones -- I haven't checked). It's
small enough for me to hold in my hand.
you cant. IT swaps a few lines around and will
confuse the mess. I doubt
the original cable is bad. More likely if the drives are really SA400(l)
the positioner has slid from the notch it follows in the cam.
Hm. Drive B was a Shugart (I think -- not a 400 but the half-height version)
but the new drive B is a TEC drive. I'm skeptical that both drives would have
the same problems. I thought the new drive was unused (though I could be
wrong about that).
These errors are sporadic, and it could be that writing will mess up my
chances of doing subsequent reads -- not sure if reading alone causes errors.
But it could be something entirely different (perhaps I screwed up putting
the terminating-resistor pack in the right way?)
it's not a pc, no progrmming option. The half
twist was so two identical
drives would work without changing jumpers. Everyone else made you change
jumpers.
Well, yes, but that means people could have four drives and set up the system
the way they wanted to. I'd rather change the jumpers.
Which pins are swapped? If I read the manual right, they are:
10 drive select 1 -> 16
11 ground -> 15
12 drive select 2 -> 14
13 ground -> 13
14 drive select 3 -> 12
15 ground -> 11
16 motor on -> 10
-- Derek
8:39 a.m.
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allisonp＠world.std.com -
ard＠p850ug1.demon.co.uk -
dpeschel＠u.washington.edu