On Thu, 25 Feb 2021 at 21:32, Rich Alderson via cctalk
<cctalk at classiccmp.org> wrote:
As for operating system support, the only DEC
operating system which could put
tapes and disks on the same Massbus was TOPS-20. Tops-10 explicitly tells you
in the SYSGEN process that disks and tapes must reside on different channels; I
believe that ITS follows that same principle. WAITS, although originally a
highly divergent offshoot of Tops-10, took the Massbus code from TOPS-20 v5
when it was ported to a KL-10 at SAIL, so could in theory have disk and tape on
the same channel.
RSX-11/M+ should as well. It is possible during SYSGEN to define a
"mixed MASSBUS".
Best regards,
Christian
--
Christian M. Gauger-Cosgrove
STCKON08DS0
Contact information available upon request.