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. 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?
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
