[SunRescue] Hi!

[Peter Koch]

>Ah, don't you mean "feet"?  :-)  12m is never mentioned...
>At 5MHz SCSI-1 synchronous negotiation the bus may be 6 meters long

Ah, sorry, yes, 6 meters. My memory is fading here... Alzheimer light??? 

>I'm fairly certain the command set used is definitely SCSI-II.

Maybe, but all hardware looks suspiciously like SCSI-I.
Sure the NCR 5380 can SCSI-II and thus the "si" may understand
some SCSI-II commands. The "sc" won't!!! And the SunOS driver
might not make use of any SCSI-II command...          

>The problem isn't necessarily termination but rather poor termination
>power. 

Yeah. There were rumours that some Sun3 SCSI connectors have
the termpower line connected to GND!!! thus killing hard disks
if termpower is applied to the bus.
Does somebody know more about this issue? The only thing i
found was this:

        Check out pin #26 on the Sun SCSI bus.. It's termpwr, and on some
        machines, should NOT be connected.. I don't know if it will
        solve your problem, but my Sun wouldn't boot off my 1Gb DEC
        until I cut off wire 26.

        The problem is, Sun somtimes grounded that pin on several 3/60's
        and causing improper termination power.

Ah, here is more:

 - cut lines 25 and 26 (that is what I have done)
 - don't use Termpower from SCSI BUS, 25 or 26 is TERMPWR and
   it's _grounded_

Tschuess

Peter