> From port-vax-owner-clowenst=ucsd.edu@netbsd.org Wed Dec 20 09:29 PST 2000
> Date: Wed, 20 Dec 2000 12:28:57 -0500 (EST)
> From: der Mouse  <mouse@Rodents.Montreal.QC.CA>
> To: port-vax@netbsd.org
> Subject: Re: Any spare Qbus cdrom cards for an RRD42 drive around?
> Delivered-To: port-vax@netbsd.org
> 
> >> As to scsi tapes like the Cipher 9 track decks with single-ended
> >> scsi, why or why not could they also not be hung off the disk scsi
> >> bus?
> > It depends on the SCSI adaptor.  I expect that the Q-Bus SCSI adaptor
> > emulates a MSCP adaptor.  [...TMSCP...SCSI tapes...]
> 
> Does anyone know of a "native" Q-bus SCSI interface, ie, one that
> doesn't hide its SCSIness?  It wouldn't be bootable without replacing
> all the ROM code, but it would still be useful nonetheless (at least to
> retrocomputing geeks like us :-).

Isn't that what the DEC KFQZA was?  A raw SCSI card that required a
special driver?

I have somewhere a couple of Qbus to SASI interface cards that were like
that.  I wrote handlers and bootblock code for RT11, and a small initial
bootloader for them.  They could probably handle a single SCSI device.

    carl

        carl lowenstein         marine physical lab     u.c. san diego
        {decvax|ucbvax} !ucsd!mpl!cdl                 cdl@mpl.ucsd.edu
                                                  clowenstein@ucsd.edu