21 Jun
2005
21 Jun
'05
3:55 a.m.
On Mon, 20 Jun 2005, Patrick Finnegan wrote:
Tony Duell declared on Monday 20 June 2005 06:49 pm:
A PRO is a machine based on a PDP-11 chipset (either F11
or J11),
and all that comes with it (instruction set, I/O system, intrs)
but that's about it. The actual mainboard design is busless, the
implementation of onboard I/O, interrupt system etc are different,
and the I/O bus (CTIbus) is different. The CTI-bus peripherals
are different. The system has RX50 and RDxx drives, for examples,
but their controllers are completely different from the ones used
in PDP-11's.
I ported Ultrix-11 to it (still finishing up so I can package it
up for release, so don't ask..) and that wasn't 'simple'.
--f
I suppose you could include the Pro 325 and 350
(no I/D, F11 chip) and
the Pro 380 (split I/D, J11 chip). But those will not run normal PDP11
software, the I/O is totally different I believe.
I've booted RT-11 on my Pro380, so it can't be that far off. It doesn't
have a QBUS/UNIBUS though, so there's not a whole lot of peripherals
that you can use with it.