I've got a box full of old data books that are free for shipping. (which
will be a bit since they weigh about 24lbs) Included are
GE Transistor Manual (sixth edition 1964)
RCA Transistor Manual 1964
SCR manual
SCR Applications
Power Supplies
Motorola Zener/Rectifier Handbook
Optoelectronics catalogs
Siliconix applications
HVSR designers guide
LSI design catalog
and a few others
Either pick them up in Sunnyvale, or pay to ship them to your address.
--Chuck
After a lot of negotiation and long delays, I finally picked up a Zilog
Z-80 Developement System today. There are two large boxs in the system,
one has two 8" floppy drives and the other has the main electronics.
There's also a pod connected to the electronics box by a cable. Does anyone
have any manuals or other information about this system? The only thing
that I have is some Zilog brochures for it. BTW stickers on the disk drives
are dated late 1978. I'll try to post a better description and pictures
next week. This weekend will be taken up with the Melbourne hamfest (Yippie!)
Joe
I checked on my unit's. They're blue with a biege band about 2 1/2"
tall around the top. The name plates have a brushed aluminium finish. The
CPU box is a model "ZDS" and it's also marked "1/40- 32K CPU" and
"05-6013-01" and is serial number 26. The disk drive unit is marked
"05-6013-05" and "1/40- 60K" and is serial number 275. I found a 32
sectored hard sectored disk in one of the drives. It's marked "PTR V7" "DO
- T" "1-40" "5-12-82".
Joe
>
>>I've got a Zilog MCZ Z-80 development system and RIO operating
>>system disks. Is yours blue in color? I think I've only fired-up
>>mine once or twice since I got it more than ten years ago.
>>
>>- John
>>
>>
On Sep 9, 20:43, Tony Duell wrote:
> Incidentally, does anyone know of a UK source of the large heat-shrink
> sleeving used on battery packs? Nobody seems to list it in the
catalogues.
Yes, you want Adtech Polymer Engineering in Gloucestershire.
Tel. 01285 762000
http://www.adtech.co.uk
email: sales(a)adtech.co.uk
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
From: Joe <rigdonj(a)intellistar.net>
>one of my drives. It's marked "PTR V7" "DO - T" "1-40" "5-12-82". Any
idea
>what it might be? It's a 32 sectored hard sectored disk. Is that what
>these use?
Yep these require hard sectored disks at 32spt.
Allison
This year's Radio Club of Tacoma (WA) swap was both a miracle and a
disappointment. It's rare that the two go together, I know, but it did in
fact happen that way this year. I claim "appropriate posting" to the list
for this because what I brought back is over ten years old, and can most
definitely be used to troubleshoot computer systems.
The miracle: Every so often, someone will show up with one or more pieces
of hardware or test gear that are incredibly useful, are either working
(but may be out of cal) or have only minor problems, are priced to move
rather than at "E-pay average," and where the seller has little knowledge
of just what it is they're moving.
Such was the case yesterday morning, and the fact that I had gotten seller
space this year, and was as a result able to walk around the place before
they let the general public in, is the key reason I think I scored the
following for all of $250.
Two Tektronix digital scope mainframes: An 11401 and its GHz-capable
counterpart, an 11402. Along with said mainframes came a total of four
11A32 plug-ins (two-channel vertical, 400 MHz official spec, but you know
Tek always rates conservative), an 11A72 (up to 1 GHz two-channel vertical,
50 ohm inputs), and a big operator's manual about 2.5 inches thick.
After I picked up my jaw off the floor, and wrote the guy a hasty check, I
found, in the operator's manual, a postage-paid reply card from Tektronix
that offered a free service manual for the whole works simply by filling it
out and feeding it to the nearest USPS drop box.
The 11401 mainframe had only one minor problem: It failed it's self-test
at the A/D converter section. Said problem was completely cured by the
simple expedient of disassembling the unit, vacuuming out the dust, and
reseating the few socketed chips on the analog board.
As for the '402, I'll try the same tactics on it 'cause I don't think
anyone's tried it as yet. It's fine for the first hour or so. After that,
if you power-cycle it, you get a failure in the timebase section for the 20
MHz clock. If you let it cool down a while, the failure goes away.
I wager 1,000 Quatloos that this is another case of 'press the chips back
down and vacuum.' Even if it's not, it still sounds like a minor part. As
for the plug-ins, two of the four 11A32's fail their self-test with gain
calibration errors for Channel 1. I'm not sure what's causing this, but I
hope it's minor.
My only other complaint: The '402 has some light screen burn. Fortunately,
the CRT is nothing really special: Just a mono-green tube made by
Mitsubishi. Bet I could even find a generic replacement.
And now, the disappointment(s): The event was supposed to go until 15:00
local, but by 13:15 or so, everyone but the commercial sellers had cleared
out. Also, the event itself was not well attended. I'd be surprised if we
broke 1,000 people the entire day.
As for variety of stuff, that worked out pretty well, but even here in the
NW I'm starting to see less of people that want to tinker, and more of
people that just want to 'plug-and-play.' I base this on the fact that I
saw a LOT of "interesting" items in terms of older test gear, but
practically none of it sold even though the prices seemed pretty reasonable
(to my eyes).
There was more than adequate seller space (three buildings worth), but the
buildings were separated by several hundred feet of distance, and required
considerable walking to cover. While the walking itself was not a problem,
I found it annoying that everything was not all in one place, as it is with
most other swaps.
Finally, I think the club's timing was bad. There was a major computer
swap meet (the AM Northwest people) held in Kent the same morning as the
RCT event. They even started at the same time. I'm sure this was a drain on
attendance because I've been to the AM-NW events, and they definitely run
all day and are often quite packed.
I'll be forwarding feedback to RCT on the above, along with suggestions
for better timing and some other minor improvements.
'Til next time...
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner and head honcho, Blue Feather Technologies
http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com
Amateur Radio: WD6EOS since Dec. '77 (Extra class as of June-2K)
"Our science can only describe an object, event, or living thing in our
own human terms. It cannot, in any way, define any of them..."
From: Robert Stek <r.stek(a)snet.net>
>Maybe I got a bargain, maybe I didn't. Help me decide. I won an
auction
>for three paper tapes in excellent condition. All three are labeled
with a
>DECUS sticker (and the main DECUS site is re-organizinf its software
>section, so there's no info there). All three have typewritten
RSTS11-75 on
>them, then one has 8080.Bas 2/June/76, one has 8008.Bas 2/June/76, and
the
>third has 8008.Doc 2/June/76. Supposedly these all came from MITS.
??? MITS had nothing to do with DEC or RSTS11 OS. So my guess is they
were user submissions of some basic programs not the MITS basic
(billy gates would have fits over that one too). Also MITS never did
anything
with 8008 that I ever heard of.
>So, for starters, does anyone KNOW what these are? Any informed guesses
>beyond the obvious? Can anyone read them for me or make copies in a
more
>"modern" format (i.e., CUTS cassette tape)?
Well the .bas suggest they could be basic but are they tokenized or
ascii???
Allison
Maybe I got a bargain, maybe I didn't. Help me decide. I won an auction
for three paper tapes in excellent condition. All three are labeled with a
DECUS sticker (and the main DECUS site is re-organizinf its software
section, so there's no info there). All three have typewritten RSTS11-75 on
them, then one has 8080.Bas 2/June/76, one has 8008.Bas 2/June/76, and the
third has 8008.Doc 2/June/76. Supposedly these all came from MITS.
Right now I don't have a paper tape reader (Doug Quebbeman has mine, and I
haven't interfaced it to my Sol yet anyway).
So, for starters, does anyone KNOW what these are? Any informed guesses
beyond the obvious? Can anyone read them for me or make copies in a more
"modern" format (i.e., CUTS cassette tape)?
Bob Stek
Saver of Lost Sols
ard(a)p850ug1.demon.co.uk (Tony Duell) wrote (after me):
> > mechanical wall outlet configurations.) Output is 8VAC, 3A, which
>
> Probably a typo, but it could be serious. The output is 8V, 3VA (not 3A).
> The output current is therefore 0.375A. Also the regulation
Tony is absolutely correct (as usual). I plead stupidity: I should
have put my glasses on before reading the front of the adapter.
Have to admit I wondered how it thought it could fit 3A down those
skinny wires that go to the output plug.
BTW, the Fedco battery packs (3x Gates Cyclon cells in series, held
together with a big piece of heat-shrunk tubing) that I got from iGo
do work. I've ordered another batch from another online seller
(trying to save a few bucks) and will post a note when they've arrived
and I've had time to install them.
-Frank McConnell
