30 Sep
2023
30 Sep
'23
7:32 p.m.
On 2023-09-30 19:04, Robert Armstrong wrote:
No. You can start with that interrupts are handled completely
differently to a PDP-11, and this then immediately leads to a console
terminal driver will not work on the Pro. Non-interrupt driven
communication to the console is the same as a PDP-11, so some
diagnostics are possible. But any OS will be interrupt driven, so
everything related to interrupts needs to be done differently.
And no, nobody have done this. Part of the bigger problem is that the
device drivers for the Pro disk controller is not around, so any porting
would require rewriting that one, as things stand.
Johnny
Billquist <bqt(a)softjar.se> wrote:
DEC in all it's wisdom decided to make the Pro hardware not really that
PDP-11 compatible. So any OS that you want to run on the Pro will need
to be rehacked in order to make it possible.
I thought it was mostly a matter of device drivers for the PRO
peripherals, which are all non-standard (when compared to their real PDP-11
cousins). And I thought somebody had already done this. FWIW, I thought there also existed a similarly
modified version of RT11
for the PRO too.
Yes. DEC did provide an unsupported version of RT-11. Included drivers
that were needed for the Pro. I *think* they also do the console on the
graphic subsystem, which again is a bit of work.
I *think* Paul also have the never officially released port of RSTS/E
for the Pro. But noone did a port of RSX - after all, they had P/OS...
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol