UNIX on PDP-11s

6 Jun 2009

...
      Hmm, MSCP on my PDP-11/24. 8-)  
 Yes, with a high-speed RD52 for authenticity ;-)  
 Not possible. The only MSCP controller DEC did for Unibus was to SDI 
 (tha UDA50). The only MSCP to MFM controller DEC did was for Q-bus (the 
 RQDX series). 
What happens if you put a DW11B (Unius - Qbus interface) in the Unibus 
machine and connect the Qbus side of that to an RQDXm? Obviously it can 
only support 18 it DMA, but it does support that.

I know for a fact that you can use an RLV11 on a Unibus machine that way, 
I did it on an 11/45 with no problems.

-tony

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UNIX on PDP-11s