Can the MicroVAX II or KDJ11-A boot off of a SCSI CD-ROM?

[Glen Slick]

On 3/22/07, David Betz <dbetz at xlisper.com> wrote:
> Okay, here' s a dumb question. What do I type at the ">>>" prompt to
> boot from the SCSI controller. This is a TD Systems Viking
> controller. I tried just "boot" but that seems to attempt to and fail
> to boot from the ESDI hard drive. I have the MVII technical manual
> and looked up the boot command but all it says is "boot <device>" but
> doesn't say what the choices are for "device". What would I enter as
> a device name to skip over the ESDI drive and boot from the CD-ROM
> attached to the Viking controller? Also, the CD-ROM drive is set for
> unit 4 if that makes a difference.
>

Try this, where x is a number.

>>>b dubx

MSCP controllers are du, each controller is assinged a letter starting
with 'a', and each devices on the controller is assigned a unit
number.  On a PDP-11 MSCP controllers are supposed to have unique
device numbers across all controllers but not necessarily so on a MVII
so you could have both dua0 and dub0.

The SCSI ID of the CD-ROM does may not directly map to a unit number,
i.e SCSI ID of 4 probably does not mean MSCP unit number 4.  On the
Dilog SQ706A you have to configure the SCSI ID -> MSCP unit number
mapping using the on board firmware utility.  Maybe there is a similar
utility somewhere in the Viking controller firmware.

I'm pretty new to this also.  I believe ">>>show device" would display
all of the controllers and attached devices found.

-Glen