On Jan 4, 15:40, The Wanderer wrote:
> Pete Turnbull wrote:
> > On Jan 2, 21:08, <quapla_at_xs4all.nl> wrote:
> > >
> > I'm sure there must be people on the list who know more about 11/70s
than I
> > do, but since no-one else has replied yet...
> >
> Until know, you're the only one.....
Oh dear, I've only seen one once.
> > Is the memory powered up and connected? At the right address (you must
> Yes, it is running, and all the leds are on, except one red led (battery
> power
> available?).
> There is 128KW of memory (in 2 64Kw boards)
>
> > have some memory in the lowest 28KW to start up)? Is the cache
working?
> How do I know if the cache is working?
Good question. I'm not sure, I think it's tested by the diagnostics on the
bootstrap card. I think it's possible to disable it but I don't know how.
It may be in one of the processor handbooks, which I can look up tomorrow.
That's where I checked the value for the LSR and USR.
> > There are various things done by the power-up bootstrap diagnostic
> True, I have re-read the M9312, and at address 777644 is the diagnostics
> rom start
> address. When I load this address and then set 012 in the switch reg,
> for some
> moments it is blinking leds, and then lets the pause light on. There is
> no sensible
> address/error code shown at the console which should indicate a diag
> failure.
That sounds encouraging. At least it seems to be running the diagnostic
code. I think, though, that the address it halts at is what tells you what
(if anything) failed the test. If you can tell where it halted, it may be
able to look that up.
Do you have the manual for the M9312? There are several ROMs that might be
on it, with different device bootstraps, and I think there are at least two
diagnostics PROM options: one for 11/70 and one for other Unibus machines.
I could be wrong about that, of course; I might be confusing it with the
multiplicity of variants of the M9301. I just happen to have an M9301-YC
from an 11/70.
> On the M8132 is a switchblock (1 of 3) which is - according to the doc-
> the
> lsw, I have set it to 1M,
I suspect that should be set to the actual memory size.
Anyone else know anything about 11/70's?
--
Pete Peter Turnbull
Network Manager
University of York
Received on Fri Jan 04 2002 - 19:59:57 GMT