[Info-vax] OS Ancestry

[David Jones]

On Thursday, May 13, 2021 at 11:55:34 AM UTC-4, Bob Eager wrote:
> On Thu, 13 May 2021 09:06:33 -0400, Bill Gunshannon wrote: 
> 
> > Thank you. That takes me back a little bit further. But I fear the 
> > very origins, the driving model, may be long lost by this time. I have 
> > a number of very early textbooks on Operating Systems and none of them 
> > describe features common in VMS or RSX.
> Which features were you thinking of, as a matter of interest? 

When I took a micro-architecture class in college (~1983), the concept of an
I/O interrupt completely baffled about half the students. The programming
assignments on PCs running CP/M, though I had been using RSX-11M on
an 11/44 for a couple years.