"Zane H. Healy" <healyzh at aracnet.com> wrote:
> As for not needing any kind of framebuffer, under OpenBSD I don't really
> need it with the HP Pentium III system I'm using. Though it was a bit
> worrisome the other night when there was nothing on the console and
> it took forever to come up (it was fsck'ing the disk as the power had
> gone out).
why not use a serial console? OpenBSD supports this.
For accessing the serial consoles of my machines, I use conserver
(available on the ports collection) which has the benefits of (a) keeping
a log of everything that appears on the serial port (even if you are
not connected), (b) allows connections to the serial port over the
network, and (c) allows multiple r/o connections to the same serial port
(so you can monitor what's going on from many points).
I used to have a big stockpile of write enable/protect stickon tabs for
diskettes but it's gradually getting whittled down to a precious few dozen.
Does anyone have any suggestions on where more can be obtained? Note that
these have to be the removable opaque BLACK tabs. (I've got a bunch of 3M
clear red tabs that don't work at all on some drives.)
I finally got juice on the main power line connection in my museum.
I am connecting my machines bit by bit, after 2 years of inactivity.
I have found the following problem with my 11/34C.
(I will keep the description short, and tell only the end result)
The console of the 11/34C (11/34A plus cache option) shows weird
(=wrong) behaviour. It was working fine!
The display shows "000000", and the RUN LED is off.
If I press the 'LSR' button, the 'SR DISP' LED goes on. However,
if I press any of the numerical buttons, '1-6', a digit in the
display only flashes very brief. I cannot say what the digit was.
It looks like the M7859 has developed a problem.
To make things more weird the following happens if I start with
pressing the 'CLR' button and then the numerical buttons.
1) press CLR (display stays at "000000")
2) press e.g. 6 (some of the rightmost digit segments briefly flash)
3) press 6 again (1st and 2nd of the right display flashes)
4) press 6 again (1st, 2nd and 3rd of the right display flashes)
The first leftmost three displays remain "000" and do not show any
sign of changes.
Pressing 6 after the first 3 times, repeats the flashing of some
segments in the three rightmost displays.
So, I have the impression it has the problem to do with the M7958.
AFAIK, the entry of the digits, for example the numeric entry '165020'
does *not* need the UNIBUS, but only sets up an internal register.
The 'LAD' button, and 'DIS AD' will start a UNIBUS cycle (to access a
memory location). Correct?
BTW, the voltage on the CPU backplane (DD11-PK) is 5.08 V. and the
+15 and -15 read +/-15.x V. (Can't remember the exact value).
I have an other 11/34 with an M7958, but never powered up that box.
I took that M7859 and installed it in the 11/34C. The display stays
dark. According to the M7859 doc, that basically means that the board
is dead. So much for board swapping. Sorry, could not resist to try
an easy success. I don't have other spare M7859 ...
If you are interested, I can tell the steps I did before I stumbled
on this M7859 (?) problem ...
Anybody seen this display / console panel behaviour on the 11/34 ?
Any clues ? All input is appreciated !
- Henk, PA8PDP.
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>Subject: Re: OT: Lowest-power small server solutions
> From: "Chuck Guzis" <cclist at sydex.com>
> Date: Tue, 01 Nov 2005 15:02:46 -0800
> To: cctalk at classiccmp.org
>On 11/1/2005 at 9:52 PM Pete Turnbull wrote:
>>However, many of the Sun/SGI/HP type of machine might run more quietly
>>since they don't need big fans for CPU and PSU. They also don't need a
>>framebuffer as Jules said, *and* no keyboard. But they will tend to be
>>slow, and you'll have fun trying to doing all the IP masquerading
>>firewally stuff on anything but Linux or BSD, which is going to be more
>>trouble than it's worth on most of the above.
>Hmmm, the Compaq Deskpro was built at a time when Compaq seemed to care
>about quality. The PSU fan isn't one of those 4" screamers, but a slower
>4.5" very quiet model. The expansion card backplane is plugged into the
>motherboard and pulls out from the chassis for easy card servicing. There
>are air intake holes at the bottom rear of the machine so that the airflow
>first passes over the motherboard and actually makes some sort of sense and
>keeps the floppy drive and CD pretty clean. No annoying little cheap fan
>on the CPU heatsink either.
>Maybe I can't do MUCH better than that.
>Are 5.25" IDE drives any more reliable than the 3.5" models? I've got a
>few old Quantum units--the largest is about 8 GB, but I'm using a 3.5"
>Maxtor in the box right now.
I have a Dell 466 pizza box thans near dead silent (no cpu fan and PS fan is slow speed).
Only problem is it's 486DX/66.
The other cead silent one is a Modular Systems box (486/50) with a 700mb 2.5"
drive inside. What 1.2A at 12V gets you is 10Bt, SVGA, Parallel, Serial all
in a box 5"x3"x11". Add one monitor, PS2 mouse, PS2 Keyboard and go. Even
knows how to netboot.
Also a AT&T Globalist 620 pizza box. Only p100 but quiet.
I may be installing a 6640, 6660, star coupler and HSJ40s next week with
'a shedload of disks'. The size of the shed hasn't been quantified :)
Can anyone remember the rules for star couplers before I go reading all
the docs? I haven't done anything with these for nigh on 10 years and can
only remember basics like CI cable positioning and macro bends etc.....
I know I've got a 6660 at work here for a memory refresher but no SC.
Binary Dinosaurs creator/curator
www.binarydinosaurs.co.uk - the UKs biggest home computer collection?
Let me know if they are available and what condition they are in. Maybe
we can work something out. Thank you for your response.
From: 9000 VAX [mailto:vax9000 at gmail.com]
Sent: Tuesday, November 01, 2005 4:34 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: DEC FOR SALE?
On 11/1/05, Roger Donoghue <rdonoghue at ppsparts.com> wrote:
> I am looking to rebuild my DEC product menu. Anyone selling RD53-A's
> RA81's & 82's?
I may have access to some RA81 or 82 or 90. Not sure whether they are
On Nov 1 2005, 14:03, John Allain wrote:
> > You said you have lots of transceivers. So why do you want
> Modern 10bT only system to a length of 10b2 coax, and back.
> Just 2 10bT/10b2's would do, but as I said everything I have is
> AUI. I also have a 10bFL to AUI setup here too.
Ah, I wondered if it might be something like that. I've tried it with
three or four different AUI transceivers, and never found a pair that
worked back-to-back. The problem, as others have noted, is the
The cheapest easiest way to do what you want (convert 10baseT to
10base2 or similar) is to buy a small secondhand 10baseT hub that has a
suitable AUI (sometimes (mis)labelled "10base5") or 10base2 port, often
described as an "uplink". Have a look on eBay.
Pete Peter Turnbull
University of York