27 Dec
2002
27 Dec
'02
5:25 p.m.
On Fri, 27 Dec 2002, Gunther Schadow wrote:
Hum. My manual don't mention anything about speed. Assume it's working
fine for now.
Johnny Billquist wrote:
No problemo. :-)
It would flicker very briefly, but I suppose you
should see some
action. Anyhow, the A or B button should light up if things are working.
I assume you have the cabling correct. You know. The total number of
cables between the UDA-50 and the disk must be an odd number.
DANG! How could I make such stupid mistake! It's not like I had
overcome this problem before ... so, thanks for reminging me. >The UDA-50
>shows the cycling pattern on the LEDs, not unlike the KDA-50 in
>my VAX6000s.
That's the normal idle pattern. Shows that
the UDA-50 is working
correctly.
The manual that I have mumbles something about the speed of the
cycle pattern to be significant an might signal an error. Also,
the question still is whether the cycling pattern says that the
UNIBUS is connected properly ...
I don't think it does. It's just showing that the UDA-50 itself is
working. The outside world is not something it cares about. :-)
I guess it doesn't have to be
ever addressed by the CPU in order to be showing this pattern.
Correct.
So, my address jumpers could still be wrong or the
DW780 could still
be screwed up a bit, right?
Yup.
My main concern is that I think I should expect the
UDA-50 to
show a different blinking pattern when it is in fact addressed and
is trying to access disks on the SDI cables.
It should.
The cables being
wrong of disconnected does not keep the KDA-50 from blinking
differently. Since my UDA-50 always keeps cycling, it still looks
as if I have a problem upstream.
Sounds like a correct diagnose. Still, might not show anything if no disks
are connected. I'm not sure about that situation.
I guess I will try network booting the machine next. I
did that
with the uVAX II successfully, in the case of the 11/780 I will
just have to load the boot program through kermit over the console.
That's one way. Another is if you happen to have a KDA50. Then you could
just dump NetBSD on a disk, and then boot it on the 11/780. NetBSD can
boot with VMB nowadays, and I'm certain you have VMB on your RX01.
I guess the proper way would be to generate DEPOSIT
commands for
the boot loader (that otherwise would have been sent through MOP)
and send them through Kermit, right? But darn, I don't have a
DEUNA or DELUA ethernet but some other thing that may not even be
supported ... actually, I may have a DEUNA hardware, but I don't
know whether that is working...
If that other hardware don't behave like a DEUNA, you're in trouble,
yes...
Johnny
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt(a)update.uu.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol