[pups] DEC PRO or P/OS

Johnny Billquist bqt at update.uu.se
Tue Nov 18 08:18:10 AEST 2003

On Mon, 17 Nov 2003, Wilko Bulte wrote:

> On Mon, Nov 17, 2003 at 03:23:15PM -0500, Gregg C Levine wrote:
> > Hello from Gregg C Levine
> > Can any of you point me in the directions of a website that completely
> > discusses this operating system, PRO or P/OS? As I recall the DEC
> > Professional system was basically a shrunken PDP-11. Finding one of
> > course, would be a good thing.
> A Pro350 was an F11, a Pro380 a T11 (I hope I remember this correctly)
> CPU.

The 380 had a J11.

> I think you could also run RT-11 on them.

Correct. RT11 have support for the PRO, even if it isn't official.

> Some big VAX models
> had Pro's as console processors/systems. RD5x disk drives on the Pro's.
> And special I/O cards which only fit in Pros.

All I/O is specific for the PRO. They used a very different I/O-system
than other PDP-11s.


Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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