[Info-vax] Some new questions!

[John Santos]

In article <poa56q$e5c$1 at Iltempo.Update.UU.SE>, 
bqt at softjar.se says...
> It is not really designed in a way that you are really 
that well 
> isolated from the hardware below. There is also a reason 
why user 
> written device drivers was not something you saw in 
RSTS/E.

Unless you worked for my company.  We wrote several, 
mostly for comms devices.  I once wrote a DN-11 autodialer 
driver that worked in BASIC+ running in the [1,1] account 
which poked the device CSR to dial calls.  But that was 
weird.  Real device drivers which hooked into the RSTS/E 
I/O system and processed interrupts and could do DMA as 
well as character processing were possible but not well 
documented.