19 Sep
2001
19 Sep
'01
3:59 p.m.
On Wed, 19 Sep 2001 at 13:40:10 "r. 'bear' stricklin"
<red(a)bears.org> wrote:
I do, in fact, have several releases of DG/UX on both
QIC tape and CD-ROM.
I'd be interested in trading a copy of one for a dump of the NVRAMs. I can
tell you how to get the dump, too.
I'm just catching up on my Classic Computer reading...
I've got four DG AV 4300's sitting in the next room. Each of them has a QIC
tape drive. I got them without documentation and I haven't had time yet to
even boot them up.
If someone has instructions on how to break into root I'd be happy to try it
out, and/or if there's a way to read the NVRAM without booting the OS I'll
be happy to try that, too.
BTW, I'd love to trade the 4300's for classic HP gear...
Cheers,
Dan
www.decodesystems.com/wanted.html
20 Sep
20 Sep
8:12 a.m.
hi,
On Wed, Sep 19, 2001 at 04:59:48PM -0400, Dan Veeneman wrote:
I've got four DG AV 4300's sitting in the next
room. Each of them has a QIC
tape drive. I got them without documentation and I haven't had time yet to
even boot them up.
If someone has instructions on how to break into root I'd be happy to try it
out, and/or if there's a way to read the NVRAM without booting the OS I'll
be happy to try that, too.
after pressing 'on/off' button, during startup hold 'reset' button on the
back
side, it will fall into firmware. then you should be able to boot into single
user mode from harddisk typing:
b ncsc(sd(0),0) -s
this worked fine for me, i had the same problem some time ago.
ncsc is scsi controller, if you are not sure which one you have, you could try
to run tests in firmware, it will show it to you. (i am not sure if 4300 is
not using icsc one)
i have AV 530 and AV 4300, but no OS at this time (i am waiting for DG/UX
media). if i could help later, i'll be glad to do it.
BTW, I'd love to trade the 4300's for classic
HP gear...
what about donate one to NetBSD m88k-port developers (work is in progress)? :)
btw. i have another problem. i have Sony GDM-1601/8 monitor (shipped by Data
General with own logo) connected to my AV 530 with graphics card by 3 BNC RGB
cable made from standard 50ohm coaxial cables (i know there should be 75ohm
ones, but i just wanted to try it). i am not sure if 3 cables are enough
because that monitor has 5 BNC connectors (2 additional ones for horizontal
and vertical sync). i tried to find any docs but without success (no info
about 1601/8, just 1601 and 1601/6). problem is that picture on monitor looks
like with higher frequency than monitor can handle or without some sync, lines
are shifted to each other and it is shaking a bit. i hoped that sync on green
was enogh but now i am not sure. graphics card i have is some data general 8
B/P GRAPHICS CARD shipped with that AV 530 (monitor was probably used with
another machine).
any help will be appreciated.. thanks
bye,
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4:03 p.m.
On Thu, 20 Sep 2001, salo wrote:
after pressing 'on/off' button, during startup
hold 'reset' button on
the back side, it will fall into firmware.
Generally you can press this 'reset' button at any time; it behaves more
like an 'interrupt'. In practise it's best to at least let the system
progress past self-test number 3 before pressing it, or not going near the
button at any time the OS is running.
then you should be able to boot into single user mode
from harddisk
typing:
b ncsc(sd(0),0) -s
the format here is:
ctrlr(dev(instance,target,lun)) file options
^ ^ ^ ^ ^ ^ ^
| | | | | | |
| | | | | | a runlevel may be specified
| | | | | | such as '-s' or '-3'.
| | | | | | initdefault for a newly-installed
| | | | | | DG-UX is runlevel 's' (single-user)
| | | | | |
| | | | | traditionally, 'root:/dgux'
| | | | | an alternate file may be specified
| | | | |
| | | | default '0'
| | | |
| | | SCSI target (ID) of desired boot device
| | |
| | controller instance number. traditionally '0'
| |
| 'sd' for SCSI disk or CD-ROM
| 'st' for SCSI tape
| other values for SMD or ESDI device
|
controller type
'insc' for workstation onboard SCSI
'ncsc' for VME SCSI
other values for other controllers
lun, file, and options may be omitted for default values.
btw. i have another problem. i have Sony GDM-1601/8
monitor (shipped by Data
General with own logo) connected to my AV 530 with graphics card by 3 BNC RGB
cable made from standard 50ohm coaxial cables (i know there should be 75ohm
ones, but i just wanted to try it).
Probably not a good idea, the 52-ohm coaxial centre conductor has a larger
diametre than that of 75-ohm coax. It's possible to damage the jacks by
using the wrong able.
It sounds like you have a different problem, though. You need to re-set
the default vertical refresh frequency. There are two possible values---60
Hz or 72 Hz. I have some notes at home on how I was able to accomplish
this. I'll send a followup later this evening.
are shifted to each other and it is shaking a bit. i
hoped that sync on green
was enogh but now i am not sure. graphics card i have is some data general 8
The monitor should display nothing if it does not find a sync signal
present. It seems more likely you just need to set the refresh rate.
ok
r.
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