>First, my apologies. I didn't mean for my original message to be sent
>public.
Sam, this is a big step for you.... ;-)
>On Fri, 6 Feb 1998, Daniel A. Seagraves wrote:
>
>> The name hacker has been dragged through the mud for far too long.
>> There's almost no real record of the 1st and 2nd generation hacks. (1st
>> were the hacks at MIT. 2nd were those at Berkeley and elsewhere, who
>> adjusted the Hacker Ethic to allow for making money. 3rd are the
>> present-day warez loosers. [They're here for refrence. Technically,
>
>Not true. Read _Hackers_ by Steven Levy. It embodies the tale of the
>first two generations you mentioned and then also goes into the game
>hackers of the early 80s on microcomputers. An excellent book. I've read
>it twice (first in 1988) and may bring it on my next trip to read again.
Can you please get the ISBN for that?
>As far as the warez-loozers, well, they are just that, warez-loozers, and
>will be a footnote in some future book.
But nothing more. I dispise them. I've got a friend, who's brother claims
to know "hackers" who own looser warez sites. I asked them to get into my
system. They tried for 2 hours, and they eventually were convinced that I
WAS running Windows 2.0. ;-) Now, he knows how to "semi-hack" but hadn't
HEARD of C/C++, and thought that Unix was dead. He didn't even know about
the "clear" Linux command!!! Hacking into a NT system is... not un-hard.
>> they don't count]) All that survives to the actual public is the image
>> of some cybernerd on drugs with wild hair maliciously attacking big
>> companies just to be a punk. My brother hates computers, and he's
>> closer to THAT description than I am.
>
>Heheh. So true, unfortunately. The other extreme is the
>fat-pud-who-eats-while-he's-hacking stereotype and then the
>thick-glasses-total-dweeb-high-pitched-voice-hacker stereotype.
And then there's the nerdy NASA mission-control type revenge guy.
>> Of course, I'm still not as good as the 1st-gen guys. I can't solder
>> any good, I have nearly no idea how to wire-wrap or use a slide rule,
>> and I can't do number conversion in my head yet. I'm not very good at
>> math. (I can do it with a calculator, but I tend to drop numbers left
>> and right with big variables) I still have some to go... -------
>
>That's all myth, Daniel (except for the number-conversion-in-the-head,
>starting working at it :). The fact is, you don't NEED to know how to
>wire-wrap or use a slide-rule. They would be impressive skills and might
>get you a date some day, but if we still NEEDED to use those tools to this
>day then we wouldn't have progressed much in the realm of technology and
>that would be very sucky.
What are the requirements for being a hacker? ;-)
Tim D. Hotze
Does anyone need a Mac mono monitor? Model number MO400, circa 1987. Best
offer takes it, no matter how pathetic. Recipient either pays shipping or
picks it up in the LA area (it's not heavy at all, I can't imagine that ups
ground would be more than a few bucks on this thing).
Aaron
An exciting thrift day for me; I found a book I've been looking for for a
while now - the "Applesoft BASIC Programmer's Reference Manual" for the
Apple II. It's a hardcover in perfect condition, even the tear-out
reference card is intact! I got that and one from Digital press, "Technical
Aspects of Data Communication, 2nd edition" (1982), both for about 2 bucks.
I happened along a Motorola/Codex 2131 csu/dsu. Anybody know anything about
this little beauty? I couldn't find much on the 'net about it, but it's
obviously a 9600b csu/dsu with a nifty design.
Cheers,
Aaron
Recent postings about old calculating machines and their operation has
prompted me to fire up a web page with some information on my Contex-30
electromechanical calculator. For now I have some images up and have
transcribed the operating instructions on the back.
I am sure many of you will be stunned by how division is performed on this
device; in any case, I welcome comments on the page, the calculator, and
the idea of creating a museum for my other calculating devices.
Myself, I collect precisely this sort of wierd technology. Boy, they sure
don't make them like THAT anymore. Thank goodness :)
Please visit
Wierd Computing Machines
http://www.comcen.com.au/~adavie/wierd/
Cheers
Andrew Davie
adavie(a)mad.scientist.com
PS: You may also like to visit my other two sites..
Museum of Soviet Calculators
http://www.comcen.com.au/~adavie/slide/calculator/soviet.html
Slide Rule Trading Post
http://www.comcen.com.au/~adavie/slide/
thinkpad 700 and 720x are mca thinkpads. had a 3 year warranty and dont share
any parts with any other thinkpad. of course, windont95 wont work on them,
although linux probably would since it's been coaxed to work on other mca
boxes.
david
One finds the best stuff at thrift stores. Check out what I found today:
The Anatomy of the 1541 Disk Drive
By Abacus Software, 1984
ISBN: 0-916439-01-1
It contains a full description of the file system, the file structure, the
file commands, and also has a full 6502 assembler listing for the drive's
ROM! Very cool. This book apparently also came with a "Test/Demo" disk
but the programs are printed in the book so they can be duplicated. What
a treasure.
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
Coming Soon...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
Anyone know where I can acquire an Intel i86 and/or i286 development set
with software (asm, link, etc) and docs? Used is fine, of course, but
the software must be intact.
Thanks,
Mike
(I'm in Utah, BTW if anyone has one close...)
Thanks...
I haven't got time to reply in detail, but be warned.
1. The IBM cards that went in the 3270PC range were _not_ the same as
those they sold as upgrades - the latter drove ordinary displays, etc.
2. There were many popular 3rd party 3270 (3278/3279) emulator cards
available, the best known being IRMA.
Philip
BTW I was wrong about the 5272 - it is 720 x 350 x 8 resolution.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Tony.
I just happened to have my cards out for cleaning.
Yours seems a bit different. I wonder if it's earlier or an expansion
card for the pc/xt to give it 3270 comm capability.
My connection card has:
The BNC
2x8435
a BUNCH of gates or st, these 74L???
no memory that I can see (the computer has 640k)
a clock/crystal marked 14.1523 mhz (1589449)
Some IBM chips
2x 5617135
????
I dunno...
Mike
Tony Duell wrote:
> I have what I believe to be an interface card from a 3270 PC here. It's a
> full-length 8 bit card with PC/3278 on it. The main chips are :
> N8X305N (microcontroller)
> 3 off ROMs (15527-15529, Copyright 1983)
> 4 off 6116 RAM
> DP8340 and DP8341 (Some kind of interface chip...)
> Assorted TTL glue
> Passives, including a reed relay
>
> There's a single BNC connector on the bracket. There's also an expansion
> edge connector at the top front, which seems to be linked to the ROM
> pins/the microcontroller.
>
> -tony
Okay, I'm working on the next batch of computers for my web pages, and am
looking for any anecdotes, links, resources, or specs relating to these
computers:
Compaq Portable 386
HP 75D
Iasis Computer-in-a-book (8080)
Panasonic Senior Partner
Amstrad PC-20
NEC Starlet
Panasonic HHC
Seequa Chameleon
Sharp PC-4
TI Compact Computer 40
Specifically, the data points I list in my specs table are:
{mfr}
{location}
{model}
{processor}
{speed}
{opsys}
{bits-int}
{bits-data}
{ram-min}
{ram-max}
{rom}
{input}
{display}
{stor-cas}
{stor-fdd}
{stor-hdd}
{ports-ser}
{ports-par}
{ports-kbd}
{ports-joy}
{ports-oth}
{expansion}
{intro}
{discon}
{cost}
{size}
{weight}
{power-volt}
{power-conn}
{power-polar}
{notes}
A lot of these I can pull from the machines themselves myself as I sit down
to do each one, and for some I have manuals, but I really appreciate any
info anyone can offer. Also, stories of your experiences buying one new,
or how you always wanted one, or rumours, or what have are definitely
welcome.
Thanks!
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
At 08:10 PM 2/7/98 -0800, you wrote:
>As for the Atari, the clones are coming out of Germany, and mainly targeted
>at the Music industry. The Atari's have built in Midi. I've a couple, and
Not only Midi, but also great software and (Falcon (68030) and beyond) a
DSP port for right-out-of-the-box direct-to-disk digitial recording.
Cubase Audio (about $600 new, I think) gave you 16 channels of digital
recording. (included software wasn't serious and only gave you two
channels.) All you needed was a lot of diskspace and something to record.
When the Falcon came out, it was one of the only affordable D2D solutions
available. And now, with CD-Recorders running around left and right...
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
Thanks to all who responded to my earlier plea for info about some of the
computers I've got in my collection! I've got the pages up (and fixed the
"\" <> "/" problem) for a dozen or so computers. Anyway, any info,
comments, suggestions, criticism, flames, etc. always welcome.
The page is at <http://www.sinasohn.com/clascomp/> for them what's interested.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
Hi!
I was just offered a Lisa 2/10, which I will happily accept. I do have
the 2/5 but the second would be nice, albiet a tad greedy. :) However he
wants me to name my own price, and said that it wasn't working.
Apparantly the self test and stuff works, but it doesn't boot up - I
assume this to be a problem with the hard drive, but imagine that it
could be something else. Does the 2/10 have the battery problem found on
the 2/5, and is this particular error the sort of thing that can be
repaired given that it does start? I had imagined that a serious error
would not allow it to start at all. :) If it can't be easily fixed I'll
probably buy it anyway, but I don't want to offer too much (as I have
almost no money) but I definitly want to save it.
Thanks heaps,
Adam.
John Ruschmeyer <jruschme(a)exit109.com> wrote:
> Actually, you may want to set the disk to ID 3. SunOS does this weird
> swapping of ID 0 and ID 3. Somebody posted the historical reason a while
> back to comp.sys.sun.hardware, but I believe it had to to with 3 being the
> likely address of another sort of device.
Y'all are gonna make me pull aphasia out of storage and set it up
to look at the generic 4.1.1 config file for the Sun 3, aren't you?
My recollection is that this was changed about the time Sun started
shipping SPARC workstations that were likely to have internal disks.
(Or was it with the 3/80? That could also have internal disks.) I
first ran across it when I had to deal with SPARCstation IPCs and
found that the kernel config file mapped sd0 to SCSI ID 3 (and that
systems shipped with an internal disk tended to come with the internal
disk's SCSI ID set to 3).
My guess as to the reason for this was that a number of these systems
were displacing older Sun 3/50 and 3/60s with external shoeboxes,
where the disk in the shoebox was set to SCSI ID 0. The old Sun 3
would go away but its shoebox would stay behind, and the user would
get the bright idea to plug it into the new SPARCstation for a little
more disk space. The 0<->3 swap made this work a little bit more
smoothly by avoiding the need for the user to open up the shoebox and
switch the SCSI ID, as well as the service call required to explain
this need.
-Frank McConnell
"Richard A. Cini" <rcini(a)email.msn.com> wrote:
> I got a no-name "shoebox" drive for my Sun 3/50M workstation. It has a
> Maxtor 300mb SCSI hard drive and what appears to be a 60mb DC600 tape drive.
>
> After reading the Sun FAQ, I'm left clueless on how to get it to boot
> from the hard drive. The workstation that I got appears to have been a
> remote-boot type, because it looks for an Internet address at startup.
Ayup.
> Dirst off, how do I change the default boot device? Second, what are the
> appropriate SCSI device IDs for the hard drive and tape drive? Right now,
> they are set for tape:6, drive:4 (I remember from somewhere that the Suns
> look for a drive on ID=6).
Given that this is a Sun 3, I would re-set them for disk ID = 0 and
tape ID = 4. At that point, you should be able to get to the monitor
prompt by pressing L1-A (hold L1, press A) while it's trying to boot
>from the network (or before) and typing "b sd(0,0,0)" to get it to
boot from disk, or "b st(0,0,0)" to get it to boot from tape. Oh yeah,
you need to press return after that ")", unless you want to pass some
arguments to the boot, in which case you should type them before you
press return (e.g. "b sd(0,0,0) -s" to boot single-user mode).
I don't recall exactly how to set the default boot device. Once you
have something bootable on the disk, you want to set the default
boot device to "sd(0,0,0)". This setting goes in the EEPROM, only
I don't remember exactly what locations to use. If you install
SunOS 4.1.1 there will be an "eeprom" command that will help you
to not remember too.
-Frank McConnell
Does anyone have any portable computers that are 15lb or less that
they could give or sell to me? This includes Z88, Intel stuff, etc.
Not the Mac Portable, since I have that. Preferrably, I would like
something that could run without being plugged in (having replaced
the battery :). Anyone have an IBM Convertible?
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
Hello all:
Last week I got a toshiba T-100, with two 5.25" disk drives and a
monochrome monitor. It starts up with Basic.
Anybody knows if this system can run CP/M?
Another question: I own an IBM system 36. It has two hard disk drives,
105 MB each, and a tape cartridge drive. Could anybody tell me if these
drives are SCSI?
Thanks in advance.
--
Sergio Izquierdo Garcia
mailto:henrio@edu.tsai.es
I picked up a copy of D.P.I. s Print Director MS manual. Looks like
a neat peripheral-access controller device. Anyone have any need for
this ? No disks.
ciao larry
lwalkerN0spaM(a)interlog.com
allisonp(a)world.std.com (Allison J Parent) wrote:
><If only there was a mechanism to persuade companies to allow such hobby
><use of archaic software.
>
>OpenVMS archaic? It's a current product and definatly a high end OS
>and it includs DECnet networking.
Heaven forbid I ever insult anyone's choice of OS. :-) The gist of my
comments still stands, and I think it's highly appropriate to this
list: without an established mechanism for the preservation of the
rights of old software, or some process of stewardship of archaic
software, computer collectors are often violating the copyrights
of others.
Joe <rigdonj(a)intellistar.net> wrote:
>If you have the original disk then that is normally considered proof
>that you have a legal copy of the software.
I can argue with that. What about upgrades? If bought XYZ v1.0,
then paid a special price to upgrade to v2.0, I don't have two copies.
Technically, the company doesn't allow you to resell v1.0 as its
own package. It's true of many of today's packages, and I'm sure
it's true of any old mainframe/mini OS license, too.
- John
Jefferson Computer Museum <http://www.threedee.com/jcm>
I thought the list might be interested in the feeding frenzy occurring at
eBay ( http://www.ebay.com ) over some Altairs and associated
hardware/software. This is going to be very interesting to watch. The
Altair 8800a is up to almost $500.00 in just twelve hours.
Cliff Gregory
cgregory(a)lrbcg.com
More information on the Altair auction items. They have (finally!) all
been posted to www.ebay.com
in the Hardware:General section. Most of the items have been posted, but
a couple have not. If you
are looking for a particular item, check the list below, the URL for each
of the items is listed.
There have been several requests for copies of some of the items. I don't
have a way to copy the disks,
can anyone help out with that? If you can, please let me know.
Feel free to e-mail me with questions.
Thanks again for your patience and support.
Joe
--------------------------------------------------------------------------
Lot 1 - Altair 8800a
--------------------
Altair 8800a - No Serial Number on case
Front Panel with LEDs and Toggle Switches
S-100 Bus (18 slots)
Note on inside: No +8V @ 8VA from terminal strip to motherboard
Remove spare BL + WT wire
Board 1- Vector 8800V
No components, wired to front panel
Board 2 - MITS CPU BD Rev 1
Intel 8080 CPU on board
Board 3 - Processor Technology Corp (C) 1977
GPM PC210001 Rev C
Assy No. 210000
PCA 18-7
Board 4 - IMSAI Mfg. Corp RAM-4A Rev 3
Board 5 - MITS Disk #2 Rev 0-X2
Board 6 - MITS Disk BD 1 Rev 0-X3
Board 7 - Processor Technology Corp (C) 1976
S/No. 124783
3P + S I/O Rev a
Board 8 - MITS 88-2 SIO REV 0
Bag of Misc Parts
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5857130
--------------------------------------------------------------------------
Lot 2 - Altair 8800b #1
-----------------------
Altair 8800b - No Serial Number on case
Front Panel with LEDs and Toggle Switches, one switch broken,
one switch bent (but still works)
S-100 Bus (15 slots installed)
Board 1 - MITS (C) 1976 D/C INT Rev 0
Board 2 - MITS 8800B CPU BD Rev 0
Intel 8080 Microprocessor
Board 3, 4, 5 - DRC Dallas, TX (C) 1978
Memory Board, 32 chips each of
2114L2PC
F 8139 P
Board 6 - Processor Technology Corp (C) 1977
GPM PC21001 Rev C
Assy No 210000
Board 7 - MITS
MITS 8800 PROM Bd Rev 0
MITS 8800 PMC Rev 0
Chips labeled: VMTST V 2.2 BE00
MITS DBL BF00
Board 8 - Processor Technology Corp (C) 1976
VDM 1 Rev D
Coaxial Connector attached to back plate
Board 9 - Processor Technology Corp (C) 1976
CUTS rev B
Serial # 115802
Board 10 - Processor Technology Corp (C) 1976
3P + S I/O Rev A
Serial # 124764
Bag of Misc Parts
Weight 30 lbs.
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5857904
--------------------------------------------------------------------------
Lot 3 - Altair 8800b #2 System
------------------------------
Altair 8800b Serial # 5400775K
Front Panel with LEDs and Toggle Switches, one switch broken
Power supply missing Capacitor, with disconnected cables
S-100 Bus (11 slots installed)
Board 1 - MITS (C) 1976 D/C INT Rev 0
Board 2 - MITS 8800B CPU BD Rev 0
Intel 8080 Microprocessor
Bag of Misc Parts
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5858380
--------------------------------------------------------------------------
Lot 4 - MITS 8" Disk Drive
--------------------------
MITS 8" Floppy Drive in case Serial # DD0217
Pertec FD400 inside case
Part #920063-01
Serial # 365507098
MITS Disk Buffer board inside
37-pin connectors (female and male)
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5858679
--------------------------------------------------------------------------
Lot 5 - PROM Programmer + Card
------------------------------
Altair PROM Programmer
Serial # C11405
24-pin ZIF socket on front with handle
DB-25 (male) connector on back
MITS PPRG-INT Rev 0
S-100 Card
DB-25 connected to board
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5859054
--------------------------------------------------------------------------
Lot 6 - 88-2 Card
-----------------
MITS 88-2 SIO Rev 0
S-100 Card
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5859609
--------------------------------------------------------------------------
Lot 7 - 8800 PMC Card
---------------------
MITS 8800 PMC Rev 0
S-100 Card
800Prom BD Rev 0
Populated with seven PROM chips
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5859874
--------------------------------------------------------------------------
Lot 8 - Disk Controller Card Set
--------------------------------
MITS (Set of two S-100 Cards)
MITS Disk BD 1 Rev 0-X3
MITS Disk #2 Rev 0-X2
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5860149
--------------------------------------------------------------------------
Lot 9 - 88VI(RTC) Card
----------------------
MITS Inc. 88-VI(RTC) Rev 0
S-100 Card
Pat Pending (c) 1977
Main Chip labeled Intel C8214
S1260
P4920
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5860422
--------------------------------------------------------------------------
Lot 10 - 88-4 Card
------------------
MITS 88-4 PIO Rev 0
S-100 Card
Main Chip Motorola MC6820L
76350
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5860662
--------------------------------------------------------------------------
Lot 11 - 88SIOB Card
--------------------
MITS (88 SIOB) Serial-TTL
S-100 Card with daughterboard
daughterboard is: MITS MODEM BD
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5860943
--------------------------------------------------------------------------
Lot 12 - Manual
---------------
MITS Manual (only a part, missing several chapters)
altair 8800b Section IV Troubleshooting
May 1977
Some schematics, missing pages
Not for sale Yet
--------------------------------------------------------------------------
Lot 13 - Cassette Software
--------------------------
MITS SW-EXTM - Cassette Tape
Altair Extended BASIC Version 4.1
February 1, 1977
2400/1850 Hz
(c) 1976 MITS, Inc.
MITS SW-DBLC - Cassette Tape
Altair Disk Boot Loader Version 4.1
May 1, 1977
2400/1850HZ
Copyright 1977 MITS, Inc.
Altair EXT BASIC Rev 3.2 Cassette
February 1976
Copyright 1975
Boot Loc 1=256
Boot Loc 2=57
Realistic Cassette with Label
(Same label as paper tapes, Original?)
Altair Package II Cassette (2 copies, one labeled Cassette Sticks)
Rev 3.0 June 76
2400/1850 HZ
Copyright MITS 1976
Maxell C46 Cassette
(Same label as paper tapes, Original?)
Not for sale yet
--------------------------------------------------------------------------
Lot 14 - Box of 30+ Cassettes
-------------------------
Box of 30+ Cassette Tapes, not original, saved programs
Hand labeled or with notes on each cassette tape
Including:
CROS P A000 2000 - Cassette Tape
O-42 Counter
Cromemco Resident Operating System Z-80
Not for sale yet
--------------------------------------------------------------------------
Lot 15 - Paper Tape Software
----------------------------
Altair Extended BASIC - Paper Tape
Rev 4.0 February 25, 1977
Copyright 1976 by MITS, Inc.
Assembler/ROS - Paper Tape
Order Number ZA-PT
Copyright 1977 Cromemco
Processor Technology - Paper Tape
Software #1
PT80-13 TSC 8080 Reloctor - Paper Tape
(c) 1978 By
Technical Systems Consultants, Inc.
Box 2574 W. Layayette, IN 47906
Cromemco Z-80 Monitor V 1.0 - Paper Tape
E000-E3FF
(c) 1976 Cromemco
ALT-2480 Intelligent Terminal Demonstration - Paper Tape
(c) 1978
Vincent C. Jones
Processor Technology - Paper Tape
5K BASIC
BASIC-VDM Driver - Paper Tape Software
Processor Technology - Paper Tape Software
VDM Driver
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5861229
--------------------------------------------------------------------------
Lot 16 - Floppy Disk Software
-----------------------------
CP/M on Altair - 8" Floppy Disk
(c) 1977, 1978, 1979 Digital Research
(c) 1977, 1978, 1979 Lifeboat Associates
Version 1.41 S/N 81-2097
with manual - CP/M on MITS DISK User Notes
Revision 1.0 April 27, 1979
Altair Disk Operating System - 8" Floppy Disk
Version 1.0 May 5, 19777
Copyright 1977 by MITS INC.
http://komodo.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=5861450
--------------------------------------------------------------------------
Lot 17 - Hacked Case
--------------------
Altair Case - with power supply, NO Top Cover, no serial number
Very hacked up, black faceplate on front, not original
reset and power switches on front
Openings on front for two 5.25" full height drives
Altair S-100 Bus Replaced with Cromemco 8-slot S-100 Blitz Bus
Power supply modified to use 5.25" drive power connectors
Not for sale Yet
-------------------------------------------------------------------------
Lot 18 - 8" Drives
------------------
8" Floppy Drives (2), in Rack Mount cases
Pertec Drives inside
Model No. FD400 U2
Part No. 920003-01
(2) 37-pin D connectors on back
Homebrew(?) Disk buffer board on inside looks similar to
MITS disk buffer board.
One drive labeled Disk 0 the other is Disk 1
Power switch and Indicator LEDs on front panel
Not for sale Yet
--------------------------------------------------------------------------
"Zane H. Healy" <healyzh(a)ix.netcom.com> wrote:
>Not quite, there is still the Amiga, now owned by Gateway 2000. In fact
>I'm in the process of upgrading my A3000 (almost a classic) with a HiRes
I've got my old Amiga 1000 in the basement, with a serial number in
the 30s. Circa 1986, it qualifies, no?
- John
Jefferson Computer Museum <http://www.threedee.com/jcm>
Circular?
Believe me, I gave it strong consideration.
Purely to determine the efficiency of image manipulation in Java.
Oh yes, to show off as well, I guess.
I thought better of it, and went on to write emulators of my Soviet
Calculators instead.
;)
Cheers
Andrew
-----Original Message-----
From: Joe <rigdonj(a)intellistar.net>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Thursday, February 05, 1998 6:20 AM
Subject: Re: Slipping sticks
>At 04:20 AM 2/5/98 +1100, you wrote:
>>Well, since we're on this subject... how can I resist once more
>>mentioning...
>>
>>Slide Rule Trading Post
>>http://www.comcen.com.au/~adavie/slide/
>>
>>On my site you will find a link to JavaSlide on the main menu. That's a
>>JAVA slide rule I wrote some while back, so you can reminisc even if you
>>can't find your old faithful. Its quite good, actually.
>
> Yes, but when are you going to make a circular version? :-)
>
>
>
>
In fact, there are some useful things you can do to ACTUALLY recover
on computer running a reasonable operating system. Back in the late
60s and through 1981, Oregon State University ran an operating system
(called humbly OS-3 (short for Oregon State Open Shop Operating System
or OSOSOS)) but I digress.
OS-3 ran on a Control Data 3300 which had been fixed to actually
conform to the Control Data specifications for User/Supervisor
operation. The operating system was written to be as reentrant as
possible; all OS code (but a very small part pertaining to interrupt
dispatch) was PURE (not self modifying.) This is noted, since the
standard subroutine call (as was common those days) altered the
first instruction of the subroutine to be a JUMP back to the calling
code. I.e. there was no "stack" mechanism in hardware.
Since the monitor code was not self modifying, the OS could at boot
time compute an exclusive-or checksum for itself and save it for the
occurrence of a parity error. Parity errors only reported the memory
location of the error, not the actual value read. So when a parity
error occurred and if it was in the monitor reentrant section, the OS
could recompute the value of the bad location by exclusive-oring
all the OTHER locations together and then exclusive-oring the computed
monitor checksum. This reproduced the contents of the bad location,
it was stored back at the address indicated by the parity check
hardware and the OS resumed from the parity error interrupt.
Of course, for user programs (which were seldom re-entrant) the OS
just aborted the program with an error and went on about it's business.
Consequently, the parity error interrupt was RARELY fatal (at least to
the system at large. Individual users did occasionally complain when we
had a memory stack that started to go bad, but didn't get bad enough
to find with the overnight diagnostics.)
This was all back in a day when ECC did exist, but it was Horribly Expensive
(and this was compared to memory that cost about 1 to 2 dollars per byte.)
Gary.
At 05:24 PM 2/8/98 -0500, you wrote:
>> Tis' true if you meant ECC parity but this is really OVERKILL in
>> consumer machines that we're using. My machine is happily running
>> for years on non-parity as long as the memory are top quality kind
>> and cover by life-time warrenty if possible. Mac are doing that for
>> years ever since first Apple II all the way to today's Mac PCI's.
>
>Yes, I would not think of adding full ECC to a home computer. Doing so
>would probably add $25 to the cost of producing the machine - something
>the marketing types would scream about because it really adds nothing for
>them to sell!
>
>Anyway, it would have been nice if PeeCees were made so a parity error
>would tell the BIOS (or DOS) to try to clean up and do a gracefull
>shutdown, rather than just reporting the error and halting. Many parity
>errors are soft errors, only effecting one bit of the memory, so there is
>a chance that the programs (or DOS) could react and do a little damage
>control.
>
>William Donzelli
>william(a)ans.net
>
<So, if someone has a good source for VS2000 memory, I'd love to buy
<an extra 4 to 8 MB for it.
Keep an eye open as finding another VS2k with more memory than the one
you have is more likely. VS2ks are pretty common. Besides you can then
use the short memory one for spares. They are also a fun little vax. I
have three here, one running VMS, one diskless (mopboot)
and one running ultrix.
They can hold up to 14mb, with the 4 and 8 mb cards being the most common.
FYI: VMS 5.4 will run in 2mb (slowly as it will swap it's brains out).
With 4mb and a RD54 it makes a fine single user system with DECwindows
support.
Allison
<From: "Zane H. Healy" <healyzh(a)ix.netcom.com>
<Since you can now add support for the VMS filesystem to Linux, I was hopi
<that it would be able to then share the files via NFS to a VMS machine.
First the VMS machine would have to support IP networks and VMS default
is DECnet. Now if linux would support DECnet that would be nice too.
<course I have no idea how full-featured the VMS support under Linux is.
It would have to be pretty rich as VMS is a loaded OS.
Allison
<You ought to be able to just "dd" from the raw CD to a file, which you
<can then write to a hard drive, again using the "raw" device. Then
<stick the hard drive on the VAX. (Or, alternatively, ftp the image
<of the CD to the VAX, and use one of the virtual disk drivers available
<for OpenVMS.)
there are several things on that disk including versions 5.4 through 6.1
and a bootable standalone. Most of the files are savesets.
Allison
