Glen Slick (glen.slick at
gmail.com) wrote:
On simh it appears that attaching the disk to rqb0
resulted in a unit 0 drive on the secondary MSCP controller and I
couldn't find any options to configure the unit number.
Does XXDP require all MSCP unit numbers be unique? I thought that was
just RSTS...
You can do this in simh by attaching the xxdp25.rd52 image to the device
rqb2, since the primary rq controller just uses drives 0/1. When I did
this, I got the same result (i.e. a halt) as before.
Have you tried this on the real hardware yet? On the
real hardware
what unit is the drive you are trying to boot on the SQ703?
Yes, on the real hardware it doesn't halt; it just seems to hang forever.
The dialog goes something like this (I'm retyping this from my VT320, so
excuse any typos) -
Commands are Help, Boot, List, Map, Test and Wrap.
Type a command then press the RETURN key: B/A DU2
Address = 17760334
DU2
... hangs here ....
BTW, I was wrong before; my SCSI controller is actually a SQ739 rather
than a 703, but I doubt that changes anything.
There are two SCSI devices on the SQ739, an Exabyte 8505 tape drive and a
RRD43 (a Toshiba something or other) CDROM. The SQ739 is configured for
17760334 for MSCP and the RRD43 is configured as MSCP unit 2 (i.e. DU2).
Maybe there's something wrong with the way I'm making the CD image? Did
you do anything special when you made yours?
Thanks,
Bob