25 Jan
2020
25 Jan
'20
2:57 p.m.
I have dug out an old SCSI hard drive from 1997 that may
have some interesting stuff, most especially the source
code for the SGI Iris flight sim demo. I have a Linux
system with an Adaptec 2940 (aic7880) that has two
connectors on it. It SEEMS from some probing that the
50-pin IDC connector on the top of the board is
single-ended SCSI (it seems to have mostly grounds on one
row of pins). Same for the drive, which is a Quantum
ProDrive LPS. The drive spins up and does some seeking
right after power-on, so it sounds like it is
working. But, I can't seem to find that the drive is being
recognized by the aic7xxx driver.
So, looking at /proc/scsi/aic7xxx/## I see the device
addresses all show just the negotiation settings,
and /proc/scsi/scsi just shows my SATA devices but not the
real SCSI ones.
I have the right cable to plug my old HP scanner into the
mounting plate Honda connector, and it shows up
fine. I could try getting a Honda to IDC-50 cable, but I
thought the IDC50 connector on the board edge OUGHT to
work.
Does anybody have any suggestions on what to try?
Thanks,
Jon
9:42 p.m.
On 2020-01-25 2:57 p.m., Jon Elson via cctalk wrote:
I have dug out an old SCSI hard drive from 1997 that
may have some
interesting stuff, most especially the source
code for the SGI Iris flight sim demo.? I have a Linux system with an
Adaptec 2940 (aic7880) that has two
connectors on it.? It SEEMS from some probing that the 50-pin IDC
connector on the top of the board is
single-ended SCSI (it seems to have mostly grounds on one row of pins).
Same for the drive, which is a Quantum
ProDrive LPS.? The drive spins up and does some seeking right after
power-on, so it sounds like it is
working.? But, I can't seem to find that the drive is being recognized
by the aic7xxx driver.
So, looking at /proc/scsi/aic7xxx/## I see the device addresses all show
just the negotiation settings,
and /proc/scsi/scsi just shows my SATA devices but not the real SCSI ones.
I have the right cable to plug my old HP scanner into the mounting plate
Honda connector, and it shows up
fine.? I could try getting a Honda to IDC-50 cable, but I thought the
IDC50 connector on the board edge OUGHT to
work.
Does anybody have any suggestions on what to try?
Thanks,
Jon
The Adaptec SCSI cards have a firmware diagnostic utility on them as
well. IIRC, a <Ctrl-A> keypress at the appropriate time during boot-up
of the peecee will start the utility, which allows for setting
controller options as well as running some drive tests or a low-leevel
format.
Stan
26 Jan
26 Jan
2:13 p.m.
On 1/25/20 12:57 PM, Jon Elson via cctalk wrote:
I have dug out an old SCSI hard drive from 1997 that
may have some
interesting stuff, most especially the source code for the SGI Iris
flight sim demo. I have a Linux system with an Adaptec 2940 (aic7880)
that has two connectors on it. It SEEMS from some probing that the
50-pin IDC connector on the top of the board is single-ended SCSI
(it seems to have mostly grounds on one row of pins). Same for the
drive, which is a Quantum ProDrive LPS. The drive spins up and does
some seeking right after power-on, so it sounds like it is working.
But, I can't seem to find that the drive is being recognized by the
aic7xxx driver. So, looking at /proc/scsi/aic7xxx/## I see the device
addresses all show just the negotiation settings, and /proc/scsi/scsi
just shows my SATA devices but not the real SCSI ones.
I believe Adaptec 2940s were all Single Ended. I /think/ the
differential cards that they made had a different number.
Go into the cards BIOS (firmware?) and poke around. Does the card see
the drive?
Also, check the termination.
Check the bus topology. Different 2940s had different numbers of buses,
one of which usually connects to the external connector.
I have the right cable to plug my old HP scanner into
the mounting
plate Honda connector, and it shows up fine. I could try getting a
Honda to IDC-50 cable, but I thought the IDC50 connector on the board
edge OUGHT to work.
Termination is the most frequent problem.
Does anybody have any suggestions on what to try?
(See above.)
--
Grant. . . .
unix || die
--
Grant. . . .
unix || die
7:36 p.m.
On 01/26/2020 01:13 PM, Grant Taylor via cctalk wrote:
On 1/25/20 12:57 PM, Jon Elson via cctalk wrote:
Well, I set up another machine with a different Adaptec 2940
and was able to read two SCSI drives that had not spun
in 22 years! Unfortunately, I could not find the files I
was looking for, but I backed up the entire contents anyway.
Jon
I have dug out an old SCSI hard drive from 1997
that may
have some interesting stuff, most especially the source
code for the SGI Iris flight sim demo. I have a Linux
system with an Adaptec 2940 (aic7880) that has two
connectors on it. It SEEMS from some probing that the
50-pin IDC connector on the top of the board is
single-ended SCSI (it seems to have mostly grounds on one
row of pins). Same for the drive, which is a Quantum
ProDrive LPS. The drive spins up and does some seeking
right after power-on, so it sounds like it is working.
But, I can't seem to find that the drive is being
recognized by the aic7xxx driver. So, looking at
/proc/scsi/aic7xxx/## I see the device addresses all show
just the negotiation settings, and /proc/scsi/scsi just
shows my SATA devices but not the real SCSI ones.
I believe Adaptec 2940s were all Single Ended. I /think/
the differential cards that they made had a different number.
Go into the cards BIOS (firmware?) and poke around. Does
the card see the drive?
27 Jan
27 Jan
2:06 p.m.
On 1/26/20 4:36 PM, Jon Elson via cctalk wrote:
>> I have dug out an old SCSI hard drive from
1997 that may have some interesting stuff, most especially the source code
>> for the SGI Iris flight sim demo.
this one?
https://en.wikipedia.org/wiki/SGI_Dogfight
I should have the code for the 68K version and the one that shipped with AIX
I'm surprised it isn't out there already
10 p.m.
On 01/27/2020 01:06 PM, Al Kossow via cctalk wrote:
On 1/26/20 4:36 PM, Jon Elson via cctalk wrote:
Arrgh! This has been there for 3 years, and I've been
bugging myself to try to find this code, as I thought I had
the ONLY copy in existence!
Thanks, I can rest now!
Jon
>> I have dug out an old SCSI hard drive
from 1997 that may have some interesting stuff, most especially the source code
>> for the SGI Iris flight sim demo.
this one?
https://en.wikipedia.org/wiki/SGI_Dogfight
I should have the code for the 68K version and the one that shipped with AIX
I'm surprised it isn't out there already
2:12 p.m.
https://github.com/lkesteloot/alice/tree/master/alice4/software/flight
On 1/26/20 4:36 PM, Jon Elson via cctalk wrote:
On 01/26/2020 01:13 PM, Grant Taylor via cctalk
wrote:
> On 1/25/20 12:57 PM, Jon Elson via cctalk wrote:
>> I have dug out an old SCSI hard drive from 1997 that may have some interesting
stuff, most especially the source code
>> for the SGI Iris flight sim demo.
1637
days inactive
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7 comments
4 participants
participants (4)
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aek＠bitsavers.org -
cctalk＠gtaylor.tnetconsulting.net -
elson＠pico-systems.com -
pietstan15＠gmail.com