8 Sep
2004
8 Sep
'04
5:25 a.m.
On Tue, 2004-09-07 at 18:37 -0700, Vintage Computer Festival wrote:
I'm trying to connect up various MO
(magneto-optical) drives to a PC via
SCSI interface and having consistent problems. The adapter in question is
an Adaptec AHA-1542CP.
The errors are:
Host adapter status: 00h - No host adapter error
That makes it sound more like a software issue or misconfig with the PC
itself...
I'm not a total SCSI expert so I'm not
figuring this out.
I don't think there's any such thing as a SCSI expert - it never all
quite works as expected :)
Is there a
termination issue? As far as I can tell both sides of the chain are
terminated. The drive is hooked up externally and I'm using an active
terminator. The host adapter should be terminating internally.
Hmm, do check that the drives don't have their own termination jumper
that's set - having the bus terminated twice at one end could cause all
sorts of problems (and in theory damage devices on the bus, although
I've never seen that happen in practice)
What generally causes the above errors? I'm
getting it on multiple drives
across multiple adapters.
Are you certain the card(s) and driver(s) are set OK?
eg. under linux I can do:
cat /proc/scsi/sg/host_strs
and get:
Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8 <Adaptec
29160 Ultra160 SCSI adapter> aic7892: Ultra160 Wide Channel A,
SCSI Id=7, 32/253 SCBs
Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8 <Adaptec
2940A Ultra SCSI adapter> aic7860: Ultra Single Channel A, SCSI
Id=7, 3/253 SCBs
... so I can tell that the system's talking to the two controllers I
have in this machine, regardless of the state of any connected devices.
Maybe Adaptec have some DOS-based diags you can try by booting from a
floppy.
I have no idea if the 1542 auto-terminates; it's probably too old - but
IME Adaptec's auto-termination sucks and I always set termination for
their boards via jumpers just to be on the safe side.
cheers
Jules