Brian D Chase wrote:
> 
> On Fri, 23 Jan 1998, Carlsson, Anders wrote:
> > Paul Apprich had the following output when he tried to boot his VS3100M76:
> 
> > > sdopen: ctlr=0 unit=0 part=0
> > > sdstrategy(0,0): size=512 blk=0 nblk=1 scsi_tt_read: ctlr 0, slave 0, len
> > > 512, blk 0, nblk 1 sc_rdwt: op 3, block 0, ram 107dd4, len 1, sc_adr 1,
> > > lun 0
> > > exec_scsi_low(0x10cfb0, 1)
> > > sc_wait_bus_free()
> > > sc_select(1)
> > > sc_dma_setup(4, 1080500) sc_receive() begin: 48/48 48 48 48 48 48 etc
> 
> > So do I if I try to boot without b/1 and rom()netbsd instead of /netbsd.
> 
> If using rom()netbsd works, you can safely ignore my suggestion.  It was
> based on experiences with non-VAXstation systems that seemed to experience
> problems with drives that had their SCSI id set to 0.  I never bothered to
> figure out whether it was a driver, SCSI controller, or disk problem as
> setting the id to a non-zero value made the problem go away.
> 
> > Brian Chase suggested to jumper the SCSI drive to something else than 0.
> > I've now checked one of those M76 at my place, and could not find a such
> > jumper in hardware, either on the RZ24 SCSI disks or somewhere on the
> > motherboard. Is this a software setting at the boot monitor? At least I
> > can not find a "set scsia" or something there.
> 
> I'm not familliar with the RZ24 in particular, but nearly every single
> SCSI device I've ever come across has a block of jumpers on it which

Under the drive are jumperblock, near the center (front-back) on
scsi-connector side, they are marked E1,E2,E3. E1 is for id-bit 0 (1).

This drive (if it is surely Conner drive (round near scsi-connector
end)) is just OEM version of Conner CP3200D.


> allow you to specify the SCSI id of the device.  On older drives,
> jumpering the ids tends not to be the most obvious task -- unless you've
> got the drive manual handy or an on-line spec sheet on the drive in
> question.  Newer drives tend to have jumper diagrams right on them.
> 
> (Exceptions to this would be some external devices like Zip drives which
> are only switchable between id 5 and 6, and many SCSI controllers which
> are often software configurable.)
> 
> Does anyone know which drive manufacturer made the RZ24, and what its
> non-DEC designation is?  I'm assuming that DEC didn't actually make the
> RZ24 themselves.
> 
> -brian.
> ---
> Brian "JARAI" Chase | http://world.std.com/~bdc/ | VAXZilla LIVES!!!

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