I just joined this mailing list today on the advice of more than one vintage
computing contact. I was wondering if anyone could tell me anything about
the Protec Microsystems PRO-83 Z80 Single-Board Computer. I have conducted
an exhaustive search of the Internet and found only two sites (one from a
surplus store and a picture of it from a museum). I would appreciate any
information available, especially information regarding the power supply and
peripheral devices. Thank you very much.
MSN Photos is the easiest way to share and print your photos:
Any Hp Mpe folks left out there
I have non working 3000/37s with possibly good drives and a 3000 micro GX
that works but has a bad drive. I have tried to boot the micro GX from the
3000-37 drives and get this far.
Cold Boot >
Performing a Coldstart
Following Volumes not found
List Volume tables ?
Seems to freeze after that. It does this on 2 different drives.
Is this even possible to do ???
Does anyone have a OS tape for one of these ??? and which manuals
cover the boot menu and/or startup.
I would like to get both going but the 3000-37's have dead mother boards.
Stan Sieler, are you still around. Seems like every search I do comes up with
your name and advice.
g-wright at att.net
I have a couple of HPIB cables available at $15 the pair, shipped.
1 HP10833A ~42"
1 HP92220R ~12"
The 92220R has a right-angle connector at one end and the usual
straight connector at the other. (I wonder if the 'R' indicates
a right hand connector?)
First come, first served.
This is a belated response to a post you made here:
happened upon it while doing a 'for fun' search on the net for anything
doing with good ol' Century Data, my employer when I was young. Couldn't
resist responding to the post, even if it was half a year late!
The exerciser that you have is/was for the Trident series of hard disk
drives (predecessor to the Marksman). I was the main (in fact, pretty much
the ONLY) technician at Century Data/Calcomp, for these exercisers back from
the late 1970's to the mid 1980's, when they were phased out. I retired in
Have fun! (BTW, where'd you find one of these dinosaurs??)
Every so often, a discussion of Tiny BASIC appears around here. I was curious about one of the very first versions of Tiny BASIC, the 8080 implementation done by Whipple and Arnold, as documented in the Vol. 1 No. 1 (Jan 1976) issue of Dr. Dobb's Journal (of Tiny BASIC Calisthenics and Orthodontia)
This issue contains an octal listing of a Tiny BASIC interpreter for the 8080, and I couldn't find this version available for download anywhere. So... I typed it in, and it works!
I documented my work, which is available at
(Note - this location is temporary - I need a home for this if anyone is interested)
Included are the text file for the octal listing, a binary which can be loaded into memory, an attempt to extract the IL from the binary, and some instructions on bringing up Tiny BASIC. I was able to run some simple programs with a Z80 simulator that I've been running, and it appears to work correctly.
I found the PDF of the listing in the ACM digital library:
Typing in octal listings is error-prone enough, and typing them in from bad PDF scans of bad photocopies is even trickier. I have corrected many errors, but I'm sure there are more. If any kind soul would be willing to proofread / correct the listing, it would be **GREATLY** appreciated.
I hope this is of interest to people. I'm very interested in other versions of Tiny BASIC out there, if someone has ever typed this listing before, etc. I'm familiar with Tom Pittman's work, but other resources would be greatly appreciated.
Don't pick lemons.
See all the new 2007 cars at Yahoo! Autos.
I'm in the process of moving a bunch of my computer collection into
storage as part of an effort to de-clutter my far-too-cluttered house.
In so doing I've decided to thin the collection a bit.
This stuff is in the Seattle area, and I really really really prefer
local pickup, especially for the heavy items. Items are free unless
otherwise noted. More details available upon request.
SGI Indy R5000 - $20 - No hard drive or RAM, but was working the last
time I powered it up (which was several years ago.) I can probably
scrounge up some 72-pin SIMMs for it if needed.
SGI Indigo2 - $100 - R10K, Max Impact with 4MB TRAMs, 4gb drive and
(iirc) 768MB RAM. Very nice system but I don't use it much anymore (and
I have a better equipped Octane for those days I do want to play with a
nice SGI :)).
Sun Ultra 10 - $20 - 512MB RAM, 60GB drive, "Penguin" PC coprocessor.
Acorn A5000 - Complete, but faceplate got damaged in shipping so it's
kind of ugly. Has 240V power supply, I had tested this at one point
with a 120V supply and it seemed to be working. NVRAM battery has been
removed (after causing mild corrosion on the PCB, but nothing
irreversable). No keyboard/mouse.
2x IBM PC Convertibles - Complete, working. Printer & RS232 expansion
modules, and a pair of carrying cases. Now you can outclass those
Macbook-using snobs at Starbucks. (Or perhaps not.)
3x Macintosh Portables. $30 for the lot. None in working condition,
none with hard drives. Other than that, they're complete. Impress your
friends with a laptop that weighs more than a small car.
IBM RS/6000 (Type 7043-140) - 233Mhz 604e, unknown amount of RAM (I can
power it up and find out if you're interested.) Includes gigantic POWER
GXT800P video card. Was working last time I powered it up.
2x "ePod" tablet computers (w/box) - (see
http://en.wikipedia.org/wiki/EPod) Windows CE 3.0-based tablet device,
color 640x480 screen, PCMCIA. A tablet years ahead of its time, or a
useless doorstop? You be the judge.
Shibaden FP-107-1B TV Camera - The Seattle Science Center was tossing
this out a few years back, and I couldn't let it get scrapped. It's a
heavy old video camera from the late 60s. Complete with lenses but I've
nothing to hook it up to so who knows if it works. Has some nifty tubes
in it, though!
I thought I had posted this, perhaps not.
I have what's purported to be the "First" computer on the internet,
the one that joined the pieces together and I guess you could say "made" the internet,
or conversely, the "last" node, as it were (depending how you count).
It's also the system where E-Mail was first created.
It's a Sun SLC workstation, owned by Einar Steffard.
I have the original box (very slightly torn),
and the workstation itself is in very good shape except one cosmetic crack, which I believe can be fixed very easily.
I tried the smithsonian, and other computer museums, but basically was told they already had too many of this model,
never mind the significance of this particular unit.
it still runs, last I checked, and has all the original data still intact on it, such as it is.
now, I find myself with a severe lack of space, and need to part with it.
I would like a little bit of money for it, it wasn't a donation to me, and shipping maybe expensive.
or I would be willing to trade it for a vaxstation 4000, or perhaps a 3100 or two.
(I have a need for 2 working vaxen you see)
so anyhow, that's how it is, this piece of history sitting in the corner of my office, collecting dust,
and not doing much else.
I'd like to see it get to a good home, and never scrapped, I think it's too important for that.
so anyhow, anyone who wants this piece of history, drop me a note.
and yes, I have pics (including the shipping labels from Einar to me) for what it's worth...
If you like crossword puzzles, then you'll love Flexicon, a game which combines four overlapping crossword puzzles into one!
>Here's something I was thinking about the other day. I *know* for a fact that SCSI interface hard drives existed with 8" platters. I've never seen one, however. Does anyone know of any specific model numbers, or have any product information or pictures of such devices?
I just looked in my collection of 8" drives. I have two 8"
Imprimis/CDC 97201-12G PA8P1A ST81236N Sabre drives with the original
style SCSI connectors on the back. There are manuals for the drive on
Bitsavers at: http://www.bitsavers.org/pdf/cdc/discs/sabre/83325700N_PA8xx_736-1230mb_Par…,
The manuals say that the drives are 1.2G, 512 byte/sector drives with
an HP SCSI differential interface. I can post pictures if you are
Received from a former DEC service rep.:
If anyone wants scans of a specific piece, I will probably arrange it.
This accounts for only the miniscule portion I've managed
to sort and catalog in the past 3 hours (about 1/8 of the total
number of documentation pieces I received):
Communications Options Minireference Manual, vols. 1-7
LSI-11 Systems Service Manual, Vols. 1-3
VAX 8600/8650 System Diagnostics User's Guide
Communications Options Minireference Manual
VAX/VMS Internals and Data Structures
Cartridge Tape Service Documentation
TK50 Tape Drive Subsystem Owner's Manual
TK50 Tape Drive Subsystem User's Guide
TK70 Streaming Tape Drive Owner's Manual
TK70 Streaming Tape Drive Subsystem Service Manual (MicroVAX II sys.)
ThinWire Ethernet COAXIAL CABLE CONNECTOR INSTALLATION CARD
H4000 DIGITAL Ethernet Transceiver Installation Manual
Fiber Optic Attenuator Installation/Configuration Reference Card
LA120 Series Pocket Service Guide
LA10X-EJ/EL Tractor Option Installation Guide
DECWRITER III LA120 Operator Reference Card
LCG01 Color Printer System Pocket Service Guide
MicroVAX 3600/VAXserver 3600/3602 Operation
KA650 CPU System Maintenance
MicroVAX 3600/VAXserver 3600/3602 Technical Information
ULTRIX-32 Guide to the Error Logger System
LJ250/LJ252 Companion Color Printer Pocket Service Guide
LN03 Pocket Service Guide
RF-LN03 Pocket Service Guide
VAX 6200 Options and Maintenance
VAX 6200/6300, VAXserver 6200/6230 Owner's Manual
VAXstation 2000 Workstations and MicroVAX 2000 Network Guide
ULTRIX-32 Basic Installation Guide for the VAXserver 2000
DECstation 2100/3100 Maintenance Guide
MicroVAX 2000 Installation
MicroVAX 2000 Operation Addendum: VAXserver 2000
MicroVAX 2000 Operation
MicroVAX 2000 Troubleshooting
MicroVAX 2000 Technical Information
MicroVAX 2000 Customer Services
VAXstation 2000 and MicroVAX 2000 Maintenance Guide
VAXstation 3100 Maintenance Information
VAXstation 3100 Illustrated Parts Breakdown
VAXstation 2000 Hardware Information
VAXstation 2000 System Guide
VAXstation 2000 Network Guide
VAX 6000-400 Options and Maintenance
VT100 Series Pocket Service Guide
VT180 Series Pocket Service Guide
VT320 Pocket Service Guide
VT330 Pocket Service Guide
VT340 Pocket Service Guide
VAXcluster Service Reference Manual
VAXcluster Service Reference Set
VAX 8530/8550/8700/8800/8820/8830/8840 System Maint. Guide
8800 8700 8550 8500 Console User's Guide
B213F Expander Installation
R215F Expander Maintenance
KA655 CPU System Maintenance
VAX Architecture Reference Manual
CI750 User's Guide
BA11-A Mounting Box and Power System Tech. Manual
VAX-11/750 Diag. System Overview Manual
VAX-11/750 Level 1 Student Workbook (Digital Internal Use Only)
VAX-11/750 UNIBUS Interface Technical Description
VAX-11/751 User's Guide
DELUA User's Guide
MicroVAX 2000 Hardware Information
VAX 8200/50, 8500/50
The Digital Dictionary, Second Edition
VAX Maintenance Handbook (VAX Systems)
VAX Maintenance Handbook (VAX-11/780)
VAX Maintenance Handbook (VAX-11/750)
VAX-11/750 Mini Diag. Ref. Guide
RM05 Disk Subsystem Service Manual
RM05 Disk Subsystem Student Guide (Digital Internal Use Only)
RM03 Disk Drive Maint. Print Set
RP04/05/06 Field Maint. Print Set
Symptom Directed Diagnosis Tool Kit Installation Guide
VAXsimPLUS Field Service Manual
Getting Started with VAXsimPLUS
VAXsimPLUS User Guide
Model 733 DEC Disk Storage Drive Parts Catalog, Jan. 1976
RP04-TC Part II
RP04, RP05, RP06 Field Svc. Handbook
HSC50 Service Manual
HSC Installation Manual
VAX 86XX System Maint. Guide
RP05/RP06 Field Handbook -Company Confidential-
RP05/06 677-01/51 Disc Drive Illustrated Parts Catalog
Model 677-01/51 RP05/06 DEC DISC MAINTENANCE Guide (Educ. Svcs.)
Digital Education and Training: UNIX Utils & Cmds. Student Guide