Date: Sun, 12 Dec 2010 15:08:12 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: Service bureaus (Was: Tek 4051 firmware listing
<snip>
After that, I learned to drop by keypunch to occasionally chat with
the ladies (it was comprised entirely of women), and occasionally
drop off some munchies and other things. They knew me and I knew
them.
And I never had an issue with keypunch after that.
--Chuck
+++++++++++++++++++++++++++++++++++++++
As a matter of fact my very first job was also in a service bureau and
that's where I also learned the importance of being able to charm the
ladies, a skill that's served me well (and gotten me into considerable
trouble) in subsequent years...
mike
----- Original Message:
Date: Mon, 16 Apr 2012 08:01:00 -0500
From: John Foust <jfoust at threedee.com>
At 05:07 PM 4/15/2012, David Riley wrote:
>On Apr 15, 2012, at 1:02 PM, Steven Landon wrote:
>
>> <loads of crap>
> How can this fellow continue scamming, year after year?
> - John
Well, as he gets banned from one forum/list after another, he just moves on
to the next; looks like he's found a home here at last...
To his credit some people have apparently bought from him with no issues,
but I'd still be wondering if any of the stuff he's flogging now is part of
the loot he stole from fellow hobbyists in his prime...
Here's a puzzler.
One of the two memory boards from my PDP-11/35 is short four ICs. See:
http://www.loomcom.com/projects/pdp11-35/ms11_j.jpg
It looks like it was an 8KW board that was user-expanded to 16KW, and if
I'm reading the switches correctly it was configured for starting
address 000000. (The other 16KW board I have is configured to start at
address 100000)
Those four missing ICs seem weird, though. The other board is is fully
populated. Were they just pulled before the PDP was trashed? Or is that
a valid configuration?
-Seth
Hi Guys,
I posted this note on Vintage Computer Forums, and thought I'd see if
anyone could help here too.
T actually an acceptable looking TRS-80 Model 1 monitor I snagged for $3
but I figure the principles are the same regardless.
It's dead. No raster and no glow in the tube neck. The board does heat uo
though and there is that smell of old electronics being startled awake
after many years. I've done no tests yet, but I have Sam's Facts for the
model 1, and they provide a troubleshooting guide for the monitor and say
what voltages should be on cetain components. I suspect something to do
with the AC power supply of maybe horizontal sweep. Some faulty power
transistor maybe?
What I would appreciate from anyone who knows, is a link to a page or doc
which explains how composite B/W monitors work. The Sam's document is great
>from the perspective of troubleshooting detail but it does assume you know,
conceptually, just what's going on. I don't and I'd like to get some
understanding before I start poking around.
Incidently the SAM's fact PDF covers the 110V version while I have a 240V
one. There are some differences, one of which is there appears to be no
fuses in the AC circuits!
Thanks
Tez
I am hoping that one of you might be able to shed some light on a
strange behavior in the RICM PDP-8/L.
It looks like we have everything working OK except for a strange
behavior when the processor is run at full speed.
Single-stepping Instruction Test 1 works OK, so at least the processor
logic is mostly functional.
We tried just running Instruction Test 1 at full speed, but it halted at 0501.
We looked at the code in that area and found that the contents of
location 0500 was all zeros.
We loaded a little program consisting of: IAC, IAC, JMP .-2 and found
that it would replace the first IAC with zeros.
More experimenting showed that if any of the address bits 6-11 were
on, the program would work OK.
If you run the processor at full speed through an instruction at xx00,
that location is replaced with zeros.
We swapped all of the G221s, G228s, and G224s. None of the module
changes affected the strange behavior.
We swapped the M617 in slot A9, but that didn't make a difference.
The read/re-write current waveforms look OK for all addresses.
At this point we really don't know what is causing this behavior, so
any ideas would be helpful.
--
Michael Thompson
Does anyone know of any adaptors to fit a "modern" drive (be it IDE,
SCSI, ATA, CompactFlash etc) into a machine with an ST-506/412
interface?
Or more reasonably knowing this list, does anyone know of schematics
and board kits? :)
Hi,
This is a generic fixit for PowerPC Macs but always worth a try:
- Unplug the unit from the mains.
- Remove the NVRAM battery
- Leave to stand for *at least* 2-3 hours
- Power up
The issue is the NVRAM (referred to as PRAM on a Mac just to be
contrary) becomes corrupt as the battery runs down. If the machine has
been stood unused for a long time it may have this aforementioned
amnesia.
I have, however, heard a lot of sorry tales of PowerMac G5s suffering
all manner of weird problems with PSUs, leaking liquid coolers and
more. It's worth thoroughly checking the whole system over before
proceeding.
--
Mark Benson
http://markbenson.org/bloghttp://twitter.com/MDBenson
[I hope this is on-topic; I believe the machine is at least 20 years old]
I have a NEC Spinwriter 5525 printer that is available for the cost of
shipping (free if you pick it up). The printer is a wide carriage and
appears to have a RS232 serial interface. I do not know if the
printer works or not.
The machine is located in Langdon Alberta Canada (postal code is T0J
1X1) which is approximately 10 minutes east of Calgary.
The machine is rather heavy. I estimate 50 pounds or more. If there
is no interest, the machine is headed to the e-waste recycling.
I can send pictures upon request.
Contact by e mail:
i a m v i rt ihatespam u al @ @ @ g ma il . c om <-- remove
spaces and ihatespam
Thanks!
--barry
Folks,
I have happened upon a fairly nice-sized Data General Power Supply
board. It's about 8" square with 2 x 120-pin plug connector the length
of the board. It says "650W AC autoranging power supply, (C) 1996 Data
General 107003838_02/04" and has a very tiny printed label with a part
number and serial number. The part number I've made out as 665643739,
although the printing is so tiny it could be?885643739. My wife says
005043739. Google turns up nothing.
I actually have two. These are essentially NOS parts and seem unused/clean.
Here's a photo:?http://i.imgur.com/ZyYYq.jpg
Is there any interest in these? What are they?
--
-Jon
Jonathan Katz, Indianapolis, IN.
