23 Sep
2004
23 Sep
'04
11:12 a.m.
Something else that I found this morning. A circuit board about 3 x 5"
square with four toggle switches and a push button switch. The toggle
switches are labeled Freq (0,1), WREN (off,on), Hold (off,on) and DRCT
(out,in). The pushbutton is labeled Step and next to it is a LED labeled
TRK 00. On the other end of the board is long wire with a E-Z hook on the
end of it. Next to where the wire is connected it says Connect to A5 TP9.
The part number on the board is 98015-66501. On the back of the board is
DE-37F connector. There are no other connectors or power jacks so
apparently it gets it's power from the DUT. I'm guessing that it's used
for testing some kind of HP disk drive. I think the HP 9885 disk drive uses
the DD-37 connectors so I think it might be for that. Anyone know any more
about it?
Joe
23 Sep
23 Sep
1:18 p.m.
This is pure guesswork...
Something else that I found this morning. A circuit board about 3 x 5"
square with four toggle switches and a push button switch. The toggle
switches are labeled Freq (0,1), WREN (off,on), Hold (off,on) and DRCT
Freq 0,1 sounds like selecting the 2 frequencies for continuous 0's or
continuous 1's on an FM (single density) disk.
WREN == Write eneable
Hold, I have no idea on. It's not HLD (Head Load), I trust.
DRCT out,in is probably hrad movement direction
(out,in). The pushbutton is labeled Step and next to
it is a LED labeled
With STEP being to move the head one cylinder in that direction.
TRK 00. On the other end of the board is long wire
with a E-Z hook on the
And the LED's function is then obvious!
end of it. Next to where the wire is connected it says
Connect to A5 TP9.
The part number on the board is 98015-66501. On the back of the board is
Well, that part number would normally indicate it's the 1's board in an
HP98015. Now, what that is I don't know
DE-37F connector. There are no other connectors or
power jacks so
apparently it gets it's power from the DUT. I'm guessing that it's used
If it is for the 9885, I don;t think there's power on the interface
connector. Maybe the flying lead is a +5V pickup.
for testing some kind of HP disk drive. I think the HP
9885 disk drive uses
the DD-37 connectors so I think it might be for that. Anyone know any more
Its was a DE37 just now... Since neither exist, I assume you mean DC37
(which is, indeed the connector used for the drive bus on the 9885)
-tony
24 Sep
24 Sep
5:48 a.m.
The 9555 does indeed use a DB-37.
I have a system with a 9885M drive, and plan on trying to write a device
driver
for it sometime soonish...
----- Original Message -----
From: "Joe R." <rigdonj(a)cfl.rr.com>
To: <cctalk(a)classiccmp.org>
Sent: Thursday, September 23, 2004 4:12 PM
Subject: HP test board?
Something else that I found this morning. A circuit
board about 3 x 5"
square with four toggle switches and a push button switch. The toggle
switches are labeled Freq (0,1), WREN (off,on), Hold (off,on) and DRCT
(out,in). The pushbutton is labeled Step and next to it is a LED labeled
TRK 00. On the other end of the board is long wire with a E-Z hook on the
end of it. Next to where the wire is connected it says Connect to A5 TP9.
The part number on the board is 98015-66501. On the back of the board is
DE-37F connector. There are no other connectors or power jacks so
apparently it gets it's power from the DUT. I'm guessing that it's used
for testing some kind of HP disk drive. I think the HP 9885 disk drive
uses
the DD-37 connectors so I think it might be for that.
Anyone know any more
about it?
Joe
6:36 a.m.
Bob,
I know that you and Steve were working on writing some software for the
9885. If you can use this to help figure out the pin out or operation of
the 9885s you're welcome to it for a indefinite loan.
Joe
At 10:48 AM 9/24/04 -0400, you wrote:
The 9555 does indeed use a DB-37.
I have a system with a 9885M drive, and plan on trying to write a device
driver
for it sometime soonish...
----- Original Message -----
From: "Joe R." <rigdonj(a)cfl.rr.com>
To: <cctalk(a)classiccmp.org>
Sent: Thursday, September 23, 2004 4:12 PM
Subject: HP test board?
Something else that I found this morning. A
circuit board about 3 x 5"
square with four toggle switches and a push button switch. The toggle
switches are labeled Freq (0,1), WREN (off,on), Hold (off,on) and DRCT
(out,in). The pushbutton is labeled Step and next to it is a LED labeled
TRK 00. On the other end of the board is long wire with a E-Z hook on the
end of it. Next to where the wire is connected it says Connect to A5 TP9.
The part number on the board is 98015-66501. On the back of the board is
DE-37F connector. There are no other connectors or power jacks so
apparently it gets it's power from the DUT. I'm guessing that it's used
for testing some kind of HP disk drive. I think the HP 9885 disk drive
uses
the DD-37 connectors so I think it might be for
that. Anyone know any more
about it?
Joe
3:14 p.m.
Bob,
I know that you and Steve were working on writing some software for the
9885. If you can use this to help figure out the pin out or operation of
the 9885s you're welcome to it for a indefinite loan.
It may not be a lot of use for that. I've not seriously looked inside the
9885 yet (a future project, thanks for prompting me...), but it would
appwar that the lonk between the master and slave drive units -- the DC37
connecotrs -- is somewhat like a Shugart drive interface (low-level disk
drive contorl sigals). The master drive contains the controller (4 or 5
PCBs from what I remember) and links to the host using a 16 bit parallel
interface.
There would seem to be little point in using the slave drives on their
own -- any normal 8" drive would do as well. And if you're going to be
using the master, you'll be talking to the higher-level interface, on the
DD50 connector.
-tony
7237
days inactive
7238
days old
4 comments
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ard＠p850ug1.demon.co.uk -
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rigdonj＠cfl.rr.com