> From: Dave Wade > I have recently a PDP-11 which apparently came from a VAX console.
If that's really where it came from, it's a QBUS 11/03. (And IIRC only the 780 had a PDP-11 console, although I'm not a VAX expert.) > It looks to me like there are two CPU's in there Well, as Bill said, send us the 'M-numbers' (on the board handles), and we'll tell you what you've got - but multi-CPU PDP11's basically don't exist (with some rare exceptions), and certainly not in a VAX console. So I'm not sure what you have there. > and Bus Terminator Actually, that's the 'QBUS out' connector card; the way the PDP-11 runs the VAX is that there's a card in the 780 CPU which is on the QBUS (there are cables that run from the QBUS out to that card), and it allows the -11 to totally control the 780 CPU. > I have done lots of searching and there doesn't seem to be a simple > list of what can run on it Well, nothing that needs memory management - at least, as it sits. You could swap out the CPU card for an 11/23 or 11/73, then you could run an OS that needs memory management (Unix, or one of the DEC OS's that needs it - I know nothing of the DEC OS's for the -11, someone else here will, though). And your backplane is probably so-called Q18, limited to 256KB of memory, but that's easy to upgrade. Noel