Qbus split I&D?

Johnny Billquist bqt at update.uu.se
Mon Mar 16 07:43:55 CDT 2015

On 2015-03-16 13:40, Roe Peterson wrote:
> Was the J11 chipset (11/73, 83, and 93) the only qbus processor with separate instruction and data space?  And did 2.9BSD ever run without it?

Yes, the J11 is the only chipset that have split I&D space. All other 
I&D space processors were made with several boards.

And yes, as far as I know, 2.9BSD should be able to run on a J11. I 
don't remember if it was capable of taking advantage of split I&D space, 
but I think it was.


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

More information about the cctalk mailing list