Roland Huisman
Veteran Member
Finally tested the V1 on a PDP11/20 over here 
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RK05 disk emulator development and discussion
- Thread starter gwiley
- Start date
thunter0512
Veteran Member
Nice to see the RK05 emulator working with a PDP-11/20. 
Sadly RK11-D backplanes appear to have become "unobtainium".
I have the RK11-D boards (M7254 - M7257) but no backplane.
Sadly RK11-D backplanes appear to have become "unobtainium".
I have the RK11-D boards (M7254 - M7257) but no backplane.
pbirkel
Veteran Member
Perhaps literally, IMO. If this is your hearts desire I think that you need to be thinking seriously about harvesting the required number of system unit (backplane) 2x4 units (three), mounting them in a suitable frame, and then wire wrap away! Quite a number of the early 1 SU backplanes were PCB-less (e.g., BB11, DC11-A, DD11-A, DR11-B, MM11-S), including only soldered-in daisy-chain power busses; it would be straightforward to remove the controller-specific wire wrap and replace with your own. Mounting details already taken care of. Depending on the original backplane you may have to change the original handling of power connections.Sadly RK11-D backplanes appear to have become "unobtainium".