[Info-vax] OpenVMS.Org quick pool

[Johnny Billquist]

On 2012-08-24 14:48, Stephen Hoffman wrote:
> On 2012-08-24 02:58:03 +0000, Johnny Billquist said:
>
>> Oh. I should probably point out that "22-bit address" is the physical
>> addressing of the machine. Virtual addresses are always 16 bits, even
>> on modern machines with 22-bit physical addresses.
>
> So you don't know how to or haven't had to program a PDP-11 box past
> 16-bit addressing, or another analogous use of (lowercase-W) windows? Ok.

Huh? Are you saying that I'm wrong... I am not.

And yes, I've done plenty of coding under RSX, using large memory 
regions. Your virtual address is still only 16 bits. What that 16-bit 
virtual address resolves to in the 22-bit physical address space is a 
different story, and don't change that my code only deals with a 16-bit 
virtual address.
I can probably recall and present exactly how the PDP-11 works straight 
from my head without checking the documentation.

Maybe you need a refresher on what a virtual address is? :-)

	Johnny