On Wednesday, May 13, 2020 at 6:41 PM, Mike Stramba wrote:
> On 5/13/20, Mark Pizzolato wrote:
> > And there is:
> >
> > sim> SHOW UBA IO
> > or
> > sim> SHOW -o UBA IO
>
> What are those showing ?
>
> It seems to be the last address in the range shown by SH ?
Just a summary
On 5/13/20, Mark Pizzolato wrote:
> And there is:
>
> sim> SHOW UBA IO
> or
> sim> SHOW -o UBA IO
What are those showing ?
It seems to be the last address in the range shown by SH ?
>
> Maybe you can explain more about where you going with this...
I'd like to understand how
And there is:
sim> SHOW UBA IO
or
sim> SHOW -o UBA IO
Maybe you can explain more about where you going with this...
- Mark
On Wednesday, May 13, 2020 at 5:23 PM, Johnny Billquist wrote:
> Oh, and yes, there might be issues with 32 bit access, since the Unibus is
> only
> 16
Oh, and yes, there might be issues with 32 bit access, since the Unibus
is only 16 bits wide. Also, you might need to enable the Unibus adapter
before you can get to anything sitting on it.
I can't remember the details, but the documentation for the Unibus
adapter (DW780) is also on the net,
It's a little complicated, because the controller is on the Unibus, and
the Unibus only have an 18-bit address space.
So the SBI Unibus adapter contains a mapping between the VAX address
space, and the Unibus address space, and the UBA also contains mapping
for DMA, which must be set up before
What is the relationship / mapping between the addresses displayed
for the SHOW RQ (disk controller) command and the listed registers in the
vax780 manual ?
E.g SA, S1DAT, CQBA etc ?
i.e. Does the SA register appear / is accessed at 2013F468 ?
S1DAT at 2013F46A etc ?
If so, are those
