> On Nov 7, 2017, at 8:01 PM, Johnny Billquist wrote:
>
> On 2017-11-08 01:54, Paul Koning wrote:
>> ...RSTS definitely did not. It does support mixed RP/RM massbus, which is
>> more usual but not universal either, I think. But no mixing disk and tape.
>
> Thanks. I was
On 11/07/2017 07:36 PM, simh-requ...@trailing-edge.com wrote:
In RSX land, only M+ supported mixed massbus, as you mention. Not sure
when/if VMS did. Not sure how much of anything else that might have
supported it either.
I am pretty sure VMS would permit such a configuration, but
it would
Peter,
I answered my own question. The VAX/VMS Version 1.6 SPD
(http://www.bitsavers.org/www.computer.museum.uq.edu.au/pdf/AE-C770D-TE%20VAX-VMS%20Operating%20System,%20Version%201.6%20SPD%2025.1.4.pdf)
specifically states Mixed-MASSBUS configurations were supported:
NOTE:
MASSBUS disk
On 2017-11-08 01:54, Paul Koning wrote:
On Nov 7, 2017, at 7:49 PM, Johnny Billquist > wrote:
I actually don't think he has a mixed massbus. I don't think you could
even configure simh for this. Simh have a very simplistic view on
hardware
> On Nov 7, 2017, at 7:49 PM, Johnny Billquist wrote:
>
> I actually don't think he has a mixed massbus. I don't think you could even
> configure simh for this. Simh have a very simplistic view on hardware
> configurations.
> You don't configure massbuses, and put devices on
I actually don't think he has a mixed massbus. I don't think you could
even configure simh for this. Simh have a very simplistic view on
hardware configurations.
You don't configure massbuses, and put devices on them. You normally
just configure the devices, and all the bus and controller
Peter,
My reading of your hardware setup sounds like what was called a "Mixed-MASSBUS"
configuration, that is, mixing disks and tapes on the same MASSBUS. PDP-11
RSX-11M-Plus supported Mixed-MASSBUS. We dual-ported all our disks and used
the MASSBUS that came with our tape drives that way.