Not as such. The RH11 was not replicated on Q Bus because Q-Bus was made
for small disks for a long time and I think DEC didn't want to undercut
the sale of Unibus.
That said, I have run into 11/23 systems that used RM02's with a Plessy
Quniverter. Works fine enough, but only 18 bit memory support of course
which kind of does suck.
The more common thing to do was run something like an Emulex SMD
controller which could handle 22 bits (you did have to patch the drivers
in RSX I think) and could run all sorts of devices (which did need solid
patches). Or just run a proper MSCP controller, pref one with burst and
block mode DMA (which could exceed the speed of the Unibus controllers).
C
On 5/9/2024 7:10 PM, W2HX via cctalk wrote:
Was there ever a massbus controller card for qbus systems?
73 Eugene W2HX
My Youtube Channel: https://www.youtube.com/@w2hx/videos
