VMS for MicroVAX II/III (was Re: Value of a PDP/8?)
glen.slick at gmail.com
Sun Mar 11 12:12:49 CDT 2007
On 3/9/07, Zane H. Healy <healyzh at aracnet.com> wrote:
> > I believe mine was used for CD-ROM. Its a CMD controller.
> CMD made good speedy controllers. Mine are Viking (or rebadged Vikings),
> which I believe are noted for being solid, but slow.
I'm glad you mentioned CD-ROMs on Q-Bus SCSI controllers. I didn't
occur to me previously to try that. I just gave it a try and got it
I have a Dilog SQ706A Q-Bus MSCP SCSI controller. I cabled it to a
Plextor PX-6XCS SCSI CD-ROM. I used E11 to boot the RL02 XXDP disk
image and created a bootable RD51 XXDP disk image. Then I used CDBURN
on Windows 2000 to burn the RD51 disk image to a CD-R as though the
disk image were an .ISO image. Then stuck the CD-R into the PX-6XCS
and booted it up as DU0 on the SQ706A in the 11/73 into XXDP. I
flipped the 512-byte block switch on the PX-6XCS before trying this
thinking that was probably necessary. I just flipped it back and
tried again and verified that it doesn't work without the 512-byte
block switch being set.
So now I assume that if my MicroVAX-II/III box is working OK and if I
obtain a VAX VMS installation CD I should be able to use the SQ706A in
the MicroVAX box to boot and install from the VMS CD. I'll have to
give that a try.
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