Hi,
I just got a dual 200MHz pentium pro with 128Megs single board computer
+ 14-slot PCI/ISA passive backplane.
The backplane is about the size of an average ATX motherboard, so it can
fit in an ATX chassis, but then I cant use all
the slots. Does anyone know where I can get a 14-slot chassis really
cheap??
Ram
PS: if you are asking how the hell I can going to use 14 isa/pci slots
on a computer, blame it on my transputer cards :-)
This weekend, along with a batch of PS/2s, I received a 3Com 3c588 1988
vintage MultiConnect Repeater. It's a 19" case with space for sixteen cards.
Mine features one card indicating power with a green LED as well as a DB-9
female connector, then fourteen cards equipped with a BNC connector, an
activity led, one partition LED and a partition/reset switch each.
Whenever a card is connected to a 10b2 network, the partition light (which
otherwise emits a steady red light) begins to flicker. Upon flicking the
switch into reset mode, the partition light goes out. The network works fine
as long as there is no partitioning. I suppose its purpose is to not leak
traffic between several networks.
But there still are some things I'd like to find out.
What is the purpose of the DB-9 connector?
Could this repeater slow a network down?
What does partitioning actually entail?
Does anyone have any other cards for this beast? I know there are 10bT cards
as well.
--
En ligne avec Thor 2.6a.
Ecco a voi la sigla di Lupin III in francese... ma... aspettate... qualcosa
non quadra...cos'e' questa roba! Holly e Benji? ahahah... povero cantante...
gli hanno messo sotto la base sbagliata!!!
Tacchan undrar varf?r Captain Tsubasa p? franska har samma ackompanjemang
som Lupin III p? italienska
>Hmmm... Again, there's the dangerous telephone wires, plug that in
>place of properly wired apple wire for keyboard. POW! Goes the
>keyboard microcontroller. That's another fatal design thanks to
>apple for using telephone jacks instead of some kind of connectors.
They weren't the only manufacturer to use that type of connector for the
keyboard though. I'm not saying it was a good design, but it was a
connector that was small and readily available. The Atari ST, Amiga 1000,
Coleco Adam, and I believe the IBM 5155, as well as plenty of serial
terminals, used the same type of connector for the keyboard. My main
complaint about that connector is that it is so frail. Not everyone enjoys
cutting off the broken connector and wiring a new one back on! <g>
Jeff
If the BIOS type can be identified, that will be a great help in knowing to
how access the configuration utility; AMI is pressing delete during memory
count, award is control+alt+F10, and so forth.
In a message dated 3/26/01 3:07:18 PM Central Standard Time, edick(a)idcomm.com
writes:
<< I hope you've tried the obvious, e.g. <F1> or <DEL> during the POST
sequence to
enter BIOS setup? The earliest PC/AT's used a setup diskette to do the
setup of
the CMOS-based parameters. That may prove to be a problem.
To start out, I'd leave the "turbo" switch alone. However, there's usually a
Turbo indicator LED that will tell you when you're in TURBO mode. If
there's no
TURBO button, there's probably a jumper connection available somewhere, and
these connections are normally located in the lower left region of the board
(assuming the power and keyboard connections are at the upper right, for
reference. When you say "not available" do you mean you don't have one, or
that
it's not present/supported on the motherboard?
I'm curious about one thing ... Why is it that you believe it to be operable
at
12 MHz? Is the CPU marked as such? Can you tell anything about the support
chip set? I vaguely remember something about a Morse '286 around here
someplace. It's possible that there's a manual, but more likely it's a board
that was hying about. I may not have it anymore, but you never know ...
Dick
----- Original Message -----
From: "Mario Premke" <mapr0003(a)stud.uni-sb.de>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, March 26, 2001 1:22 PM
Subject: i286-Mainboard
>
> Hi, I have a 'Morse Technologies KP 286HF' mainboard with
> an AMD-Processor - the board works, but I don't have the slightest
> idea about the jumper settings ... I put 4 MB in it, but it only
> recognizes 640Kb and I assume, that for clocking it to 12Mhz the
> (not available) Turbo-Button should be pressed ?!?
> For any hints or links to manuals I would be very glad ...
> Cheers,
> Mario
> >>
[Sorry about the last post with HTML turned on - I know that some of the
most helpful people on this list probably would not even read that post, so
I am putting it up again]
====================================
I was amazed to find a local classified ad for a Hero Jr in the Saturday
morning paper and soon after I was owner of a very clean Robot for a few
dollars (about time I had that sort of luck). Unused for many years but just
some cobwebs inside, no corrosion. No charger or remote control or
cartridges or documentation unfortunately, but there is lot of technical
info on the web I have found today.
The old battery will not take a charge using my car [translation - auto]
battery "trickle" charger, so I'll have to wait 'till next week to buy a new
12V 3.5A sealed lead/acid battery - that's how this Australian model was
powered - not like the 6V batteries described on the web pages for the Hero
Jr. And I don't have a 12V PSU to power it up with in the meantime. Am I
using an appropriate re-charging device? And could I use the trickle charger
itself as the PSU for testing? A multimeter reads about 13V across the
terminals when it is powered up, but with my minimal electrical knowledge I
do not dare try something that could be fatal to the Hero.
None of the Web pages mentioned how much this thing cost new (Feb 85
manufacture date I suspect by a sticker on board inside) and I am curious
about that.
If anyone has any warnings or "gotcha's" about working with this thing, I'd
be glad to hear from you. Other than that, I can't wait - from the info on
the web it sounds great fun. And it goes to show, however rare or unusual
the item is - eventually one of them turns up here in Brisbane, Australia.
Phil
A friend of mine who knows I highly desired a Grid computer in my collection
just dropped off some black peripherals he picked up at a yard sale, to my delight.
There's a 3.5 and a 5.25 ext fdd, and an ext CDROM, all with cables, an Extended
Duty Battery Pack, and 2 60 Watt Power supplies (used in1200,1307, 1500, and
3403 models it says). The CD cables have 50 pin (3rows) connectors. Was this some
sort of SCSI or a common HD connecter for Grid ? What models would these likely
work with ?
larry
Reply to:
lgwalker(a)look.ca
I've just returned from the annual ZX-TEAM meeting in Dietges, Germany, and I
must say this 90-member international users group is doing some astounding
things. I saw lots of ZX81s with full-sized LCD displays, AT keyboards, hard
drives, floppy drives, scanners, modems, and 1 MB memory expansions. Some
folks were using ZX81s to control RC devices (such as robots), and CNC
machine tools. The TEAM now has a 24-hour dial-up BBS, running on a ZX81.
Also demonstrated was a nifty C compiler which runs on Windows-based machines
and which produces compiled ZX81 code. All in all it was pretty
mind-boggling, and well worth the time and money I spent to attend the
meeting.
Last year on this list the ZX81/TS1000 was voted "least expandable". Now, I
don't mean this to be flame-bait, but can someone please explain to me how
the ZX81/TS1000 could, by any stretch of the imagination, win the prize in
the "least expandable" category????
Glen
0/0
Curt, I'm in for a turbo station if possible.
>Just a thought, but does anyone on the list have the OS for these
>beasties? I just checked and NetBSD isn't quite ready for prime time on
>them yet, and neither is Linux unfortunately...
>- -Linc Fessenden
It may be already on some or all of the stations' hard drives, Curt
will have to tell us when he gets them set up.
I have a CD of NextStep 3.3 Prerelease 1 (seems functionally
identical to NS 3.3, YMMV but it's what I'm using on my Cube) and one of NS
3.3 Developer. I also have patch 2 on CD (for User/Dev) (patch 1 is
included in patch 2) and User patch 3 as a compressed installer file. I
also have an image of a floppy which can be used to kick-start a CD boot,
for machines that don't do that automatically (non-turbo stations?).
I can make and ship copies of the boot floppy, though my supply of
the nice ED floppies is limited.
I have a CD burner, but a) have not tried duplicating the CD's b)
Don't much want to hear what Apple would think legally about my doing so.
Since Apple gave away copies of this software in 1999, I'd expect
little difficulty from them if I "restored and upgraded" hard drives to the
current NS3.3 User/Dev + patches configuration that the machines want to
run. (Calling all Apple lawyers, please let me know if you disagree!)
The included hard drives, if they are the base 406Meg
configuration, are very tight with everything loaded. If you plan to
actively use the system, or to install much of the wonderful freeware on
ftp.peak.org (I especially recommend the Lighthouse Apps), you will
probably want a bigger drive.
What I suggest is:
1) You get the station, try it out, make sure it runs and you like it.
2) You buy and ship me a hard drive (maybe 1-2 Gig? or the original 406 Meg,
or an external) that fits in the machine,
plus a check for the cost of shipping it back to you.
3) I initialize and build NS3.3 (Pr1) User, NS3.3 Dev, and patches 2 and 3
on your hard drive by plugging it into my Cube temporarily and
building
from CD's (so you get a clean install) and copy Patch 3 over from
my OD and run on your hard drive (so it's tested and patched to
patch 3).
4) I repack your hard drive and ship it back to you, ready to boot.
5) You replace the drive in your station with the new one, or if it's external
just plug it in and boot from it.
If 25 hard drives arrive in the mail the same day, I'll build them
on a "time available" basis, so please don't be in too much of a hurry.
Notes:
1) Anyone with a full release version of NS 3.3 might be better as a source.
2) Rob Blessin, at http://206.67.57.106, does a similar deal for a living
(look on the Black Hardware page and scroll down to Storage) can do it
faster, and already has the (2.1 Gig Seagate Barracuda) hard drive ready to
go. He's also got OpenStep 4.2, which I don't.
Comments or suggestions welcome. I'm in digest mode, so response to
list mail will take until I have digested it ;-).
- Mark
Trying to add ethernet to my 11/83 (BA23). Anyone
have this cab kit lying about? This would be the mounting
plate with cable-to-card.
Have enough DEC stuff here, might be able to work a trade.
thanks ............. nick oliviero
> > Actually, I do have an *original* IBM PC. March 82, 48k motherboard
> > (not the later 64k), SINGLE side 160K floppy, Amdek color monitor.
>
Actually I think the first 5 slot IBM motherboard had 16K soldered on the MB
and three rows of sockets for an additional 48K. this made it possible to
stuff it with a full 64K of Ram. The second version had 64K chips soldered
and sockets to bring it up to 256K.
Paxton
Paxton
Can anyone tell me switch settings for this Cromemco S-100 system?
I have what I believe is the CDOS boot diskette but (of course) no setup
manuals.
The system uses a ZPU Z-80 card, 16FDC floppy controller, and a 64KZ ram
card. The 16FDC has one set of (8) switches; the 64KZ has three sets.
The previous owner wasn't sure what to do with this box and by the time I
rescued it the floppy drives had been connected up backwards and the dip
switches on the cards had been moved around. You get the picture... Well,
at least he did warn me he'd played with the switches.
I also notice that one of the chip sockets (IC60) on the 64KZ has a set of
wire shunts in it instead of a chip, connecting pins 1-8 straight through to
pins 16-9. Was this standard? In the pictures in the old Cromemco ads it
looks like a real chip in that socket.
Thanks in advance,
Arlen Michaels
On Mar 27, 9:35, Arno Kletzander wrote:
> New details on the SUN networking issue became available yesterday
> [...] However, both SUNs' transceivers and the cable work as each
> SUN can detect the other's presence. The
> printer cannot be pinged or sent data to
> Peter Turnbull wrote:
> >Have you tried pinging the printer by it's IP address instead of
> >it's name? Try a broadcast ping?
>
> As we're not too familiar with the commands, how is a broadcast
> ping done?
Instead of giving the IP address of a particular machine, give the
broadcast address of the local subnet. The broadcast address is the subnet
address but with the host part set to all 1's. For example, for the class
C network 192.168.5.0, the broadcast address is 192.168.5.255. For the
class B network 176.18.0.0, the broadcast address is 176.18.255.255, and
for the class A network 10.0.0.0, it's 10.255.255.255. You should get a
response from every device on that segment (every device in that broadcast
domain, actually) which has an IP address within the subnet range. For
example (my test subnet is 144.32.80.0 with subnet mask 255.255.254.0, so
the last 9 bits are the host part):
# ping -c 2 144.32.81.255
PING 144.32.81.255 (144.32.81.255): 56 data bytes
64 bytes from 144.32.80.11: icmp_seq=0 ttl=255 time=1 ms
64 bytes from 144.32.80.14: icmp_seq=0 DUP! ttl=255 time=1 ms
64 bytes from 144.32.80.99: icmp_seq=0 DUP! ttl=255 time=3 ms
64 bytes from 144.32.80.80: icmp_seq=0 DUP! ttl=60 time=3 ms
64 bytes from 144.32.80.22: icmp_seq=0 DUP! ttl=255 time=4 ms
64 bytes from 144.32.81.96: icmp_seq=0 DUP! ttl=255 time=39 ms
64 bytes from 144.32.80.11: icmp_seq=1 ttl=255 time=1 ms
----144.32.81.255 PING Statistics----
2 packets transmitted, 2 packets received, +5 duplicates, 0% packet loss
round-trip min/avg/max = 1/7/39 ms
#
You can see it stopped when it got a response to the second 'ping' it sent
(because I told it to use -c 2, ie send only two pings).
The reason I suggested a broadcast ping is that anything that hears that
should respond. The trouble is, no sensible implementation will do that
for anything other than a local subnet, and if the printer doesn't have a
proper IP address in the same range as the Suns (which it may not if it's
trying to RARP or BOOTP) it won't even respond to a broadcast. So, after
thinking about it, I'm not sure it will tell you much at the moment.
> >Have you checked the printer settings to make sure it's using the
> >correct IP address? Is that set from its panel, or by RARP/BOOTP/
> >DHCP? If the latter, it needs a server to boot.
>
> Tony Duell wrote:
> >That printer isn't attempting to get information (IP address,
> >software, whatever) from a server, is it?
>
>
> We're trying hard at the moment to find the printer manual. We know we
have
> it somewhere, but it's buried...
Another way to see what's happening, is to use 'snoop' if you have it on
one of the Suns (tcpdump for Linux/BSD/etc is similar). You need to be
logged in as root, and type "snoop -v" or "snoop -V". That will show you
(in some detail; -V gives less detail) all the traffic visisble to the le0
interface. For example:
# snoop -V
Using device ec0 (promiscuous mode)
________________________________
indy -> (broadcast) ETHER Type=0806 (ARP), size = 42 bytes
indy -> (broadcast) ARP C Who is 144.32.80.34, pissaro ?
________________________________
? -> (multicast) ETHER Type=D709 (Unknown), size = 60 bytes
________________________________
? -> (multicast) ETHER Type=D709 (Unknown), size = 60 bytes
________________________________
lanmodem -> 144.32.81.255 ETHER Type=0800 (IP), size = 146 bytes
lanmodem -> 144.32.81.255 IP D=144.32.81.255 S=144.32.80.99 LEN=132,
ID=53598
lanmodem -> 144.32.81.255 UDP D=2071 S=1025 LEN=112
________________________________
indy -> lanmodem ETHER Type=0800 (IP), size = 86 bytes
indy -> lanmodem IP D=144.32.80.99 S=144.32.80.11 LEN=72,
ID=56653
indy -> lanmodem UDP D=53 S=2158 LEN=52
indy -> lanmodem DNS C port=2158
________________________________
indy -> (broadcast) ETHER Type=0806 (ARP), size = 42 bytes
indy -> (broadcast) ARP C Who is 144.32.80.34, pissaro ?
________________________________
? -> (multicast) ETHER Type=D709 (Unknown), size = 60 bytes
________________________________
The first packet is one machine asking who knows the MAC address for a
particular IP address; the next two are IPX discovery packets from a smart
hub; fourth is a router advertising its connectivity to anyone who cares to
listen; fifth is a machine making a DNS lookup request.
> >Hmm... What are the LEDs on the transceivers labelled?
>
> The LEDs on the transceivers are only PWR (Power), SQE (as
> on yours) and COL (which must be Collision). Nothing for TX or RX,
although
> that would be much more helpful for troubleshooting.
If both the SQE and Collision LEDs flicker when you try to send something,
that's not anything to worry about. If SQE is enabled on a transceiver, it
sends a sort of artificial collision burst after each packet (which lights
up SQE) and that is detected by every transceiver's collision detect
circuit as a normal afterlude to the packet. You only worry when you see
collisions without SQE :-)
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
I apologize in advance for the quite possibly stupid question, but...
Is there any way to run a TU56 DECtape drive on a Q-bus system like a
PDP-11/73?
-- Tony
>> RJ-45. I have heard of the Apple IIe compatibility card, but where can I
>find
>> a cable for this connector, which I presume is for attaching an external
>drive
>> to?
>
>Actually I think it's one of those multipurpose breakout cables like the DOS
>cards had. It provided Apple II Joysticks, disk drive, and I think serial
>connections.
The DOS cards for the Mac's are actual coprocessor cards. If the IIe
compatibility card is anything like the similar cards sold for the PC, it is
basically a IIe on a single board. I've never actually had one of the Mac
IIe compatibility cards though. I do remember Tandy, among others, listing
the DOS IIe emulation cards in their catalogs into the late 80's.
Jeff
On Mar 27, 7:23, Cameron Kaiser wrote:
> I have a little Allied Telesyn transceiver I'm using on the Solbourne.
> Nice gadget, fits in the palm of my thin piano-playing mitts. There's a
DIP
> on the side for SQE-Enable and four status lights. Works very well.
I have several AT 10bse2 and 10baseT transceivers like that, and a few
Eagle ones and a D-link one too. Also a little DEC one that's about twice
that size (lengthways). Lots of companies made very small
"microtransceivers", some of them with several LEDs (my Eagle 10baseT ones
have 6).
They're quite handy for checking links through patch panels and structured
wiring - wire a PP3 (MN1604/6LR6 9V) battery to pins 6 (-ve) and 13 (=ve)
and you can test for a link light and even see when there's traffic. The
poor man's Cat5 cable tester.
> That reminds me, since I'm an AUI novice. I picked up a DB15 straight
> through cable at Fry's (it was sold as a joystick extension but it works
> fine on the Apple monitors too). I also have an Allied Telesyn hub that
> accepts eight 10BT connectors, Thinnet, and one AUI. If I plug the
Solbourne
> right into the AUI port on the hub, will I need the transceiver anymore?
That won't work, I expect. The Solbourne connector is supposed to plug
into a transceiver, and so probably is the one on the hub. I bet they're
both sockets? If so, I suggest you don't try it, as those connectors
provide power to the transceiver, apart from needing a crossover (and the
collision detect would go haywire too).
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Hello, all:
Does anyone have a link to a good 2600 cartridge archiver project? I
spent quite a bit of time last night looking for one, but I keep coming up
empty. None of the 2600 emulation pages I hit really speak about making your
own ROM images.
Thanks.
Rich
Saw this on Usenet. Figured someone might be interested. Contact original
author directly.
Eric
>From: dhorvath(a)cobs.com
>Subject: Re: Getting Rid of equipment
>Newsgroups: comp.sys.3b1
>
>I have several 3b1's and 7300's, memory boards, power supplies, hard drives,
>unused spare monitor, software, etc., etc., etc. I've been trying to sell them
>or otherwise find a good home for them. But without luck.
>
>Anyone interested?
>
>- David
>
>--
>David B. Horvath, CCP dhorvath(a)cobs.com
>Consultant, International Lecturer, Adjunct Professor
>Author of "UNIX for the Mainframer" and other books.
>
About a month ago, I posted that I picked up a Mac SE/30, sans keyboard and
mouse. Today, I got a keyboard and mouse, and now need to figure out how to
bypass security on this thing. It boots, and prompts me for a password.
Three times, and it shuts down. I know Apple has older MacOS releases on
their ftp site, but that begs the question - how do I create MacOS disks if
I lack a Mac to create them?
I think I recall seeing somewhere that you can bypass extensions on bootup
by pressing a shift key, but that didn't work, so I assume that this isn't
an extension, but something intergral into the OS itself...
> I was wandering through the local computer surplus and came across 3 very
> large Tektronix monitor/terminals that are labeled 4114.
> I did several web searches but most of the information is that they
> existed not much about their capabilities. Any additional info about them
> would be appreciated.
>
> Mike
> mmcfadden(a)cmh.edu
>
Hi
There is a large flea market about 20 minutes from here every weekend. It
fills about 2 to 3 drive-in parking lots during summer and even during the
dead of winter in below 0 temperatures, there are about 100 tables and lots
to look through... Never know what you are going to find...today I found:
Vax Station 5000/200 with 32Megs (?) $5
Amiga 500/mouse/rf mod + Intellivision II (for my game console collector
friends) $7
Box full of C64 stuff : 1541, C64, 2 CBM Power Supplies, TI99 Power Supply,
1530 Mouse, RCA cables, 1541 cable, 1 Fast Load $7
Sensory Chess Challenger 9'' inbox/manual (1981...)...my Phd-teacher brother
is a chess champ and collects old chess sets...I taught he would get a kick
outta this...$4
I passed on a Sharp PC-10 portable computer + printer at $10 as-is...I
offered $5...no go...
Can someone tell me more about the VAX? I know nothing about these things.
Either point me to a good faq or a manual or just tell me how to check this
thing out...I searched the net and after 20 minutes found close to nothing
about this thing...the compaq site is a maze....
Unit powers on PS fans (3!) spin. Small leds in back (6?) near ports seem to
cycle through in a "logical and non erratic way" at start up...
There are 4 large memory boards. Counting the chips I suspect these boards
hold 8 Megs each...4 boards...32Megs...built in ethernet from what I can
see...
Slot -0- in back does not have a cover anymore. There is nothing there...I
suspect this held a video card (?) can I still hook this up headless to a
terminal?
I connected my trusty Wyse60 to this and after a short "POST" I get...:
?IO 5/rzl/vmunix (bb rd)
>>
Returns bring more >> prompts so I am talking to the box...So I guess it
works...
The thing has no floppy or keyboard connector...Just a SCSI port....how does
it boot? -- from scsi cdrom? (linux something to try on this I suspect...?)
Sorry about the questions but I know nothing about these VAX boxes...
Thanks for the help
Claude
claudew(a)videotron.ca
In a message dated 3/27/01 3:32:55 AM Eastern Standard Time,
mapr0003(a)stud.uni-sb.de writes:
> > On Mon, 26 Mar 2001, Richard Erlacher wrote:
> >
> > > AWARD also uses the DEL during POST as well, at least in about 10 of
> the boxes I
> > > have here. Phoenix uses <F1> at any time during POST, though I seldom
> see that
> > > one outside of Packard Bell, HP, and other U.S. makers' systems.
> >
> > Phoenix also used CTRL-ALT-ESC on some of the 286s that they provided
> > BIOS for.
>
> It's an Ami Bios - the DEL key is used for going into the Configuration
> Setup - BUT inside the Setup I cannot change the values for the amount of
> memory, which I suppose is detected in the POST-routine ... I don't know
> if it's a good idea to test all possible jumper settings in the nearer
> area of the memory slots ;-)
>
>
FWIW, you could try searching around on motherboards.org I'm not sure how
far back they have information though.
>Date: Mon, 26 Mar 2001 16:18:03 -0800 (PST)
>From: Cameron Kaiser <spectre(a)stockholm.ptloma.edu>
>Subject: Re: NeXT's available
>
>Hi Curt:
>
>I'd definitely be interested in one of the Nextstations/monitors. My
>zip is 92324 so that should be worst case as far as shipping :-)
>
>Thanks,
Naaah, worse case as far as this list is concerned would be me in the UK or
Iggy :)
As for the recent banter about museums while we were researching the history
of our house last week while I was on the tail end of a break because of
depression and stress I had a wander round the 'computer' section of the
museum - the archives section is part of the museum - and all it consisted
of was an old teletype printer, a PET and a ZX81 all massively enclosed in
glass cases! I'm in a quandry as to what to do when I eventually DO start
exhibiting my stuff. If *I* was going to a computer museum I'd like to be
able to use the machines as much as possible, but since it's all *my* stuff
I'm paranoid about theft/damage etc since some of the machines took sweating
blood to get here - my Lisa is a prime example. Also some of the machines
are unused and still bagged up from when they were manufactured and I'm in
two minds as to whether I should open 'em for educational purposes or keep
'em sealed for museum purposes. (Tony, I *know* you'd want to get them open
:o))
I tinker with as much of the collection as is possible given the amount of
time I've actually got spare (not a lot) for self-educational and research
purposes; definitely not enough time though.....
Oh yeah, I got a 1995 AppleVision 1710 monitor last weekend and I get no
display on it; since it's the first one and not a later one can I safely
assume it's suffered the most common fault for 1710s and I need a new Wave
Deflection module? I think that's what it was called......
Recent additions to the museum site are some unopened Timex Sinclair stuff
and a whole slew of adverts and reviews from a couple of early 80s UK mags -
wallow in nostalgia :)
s'it for now.
cheers!
--
Adrian Graham MCSE/ASE/MCP
C CAT Limited
Gubbins: http://www.ccat.co.uk (work)
<http://www.snakebiteandblack.co.uk> (home)
<http://www.binarydinosaurs.co.uk> (The Online Computer Museum)
0/0
> I have a 17 inch Sony monitor (model GDM-1950) free to anyone who
wants to
> pick it up. The catch, it has a sync(?) problem and therefore
doesn't
> display anything very well. Beautiful (and huge and heavy) - if
you can fix
> it you'll have a great monitor. Email or call for info. Has to be
out of
> here in the next two weeks.
Hmm, I've got a 16" version of one of these which I use now and again - the
picture quality is far superior to most of the junk out there these days (I
guess these things almost hit the 10 year mark? I believe mine was dated
around '92)
They work well under Linux if you're prepared to do a bit of tweaking of
video modes - no need for a special graphics board. I believe I got mine
working under DOS a few years ago with an old Trident video board too - one
of the larger-column text modes happened to work with it nicely.
there's quite a bit of tweaking that can be done inside the monitor too (be
careful, obviously) if you're prepared for a few hours of suffering!
Maybe someone knows what the options are for converting a fixed-frequency
monitor to multisync? (Tony??) - can this even be done, is it way too much
trouble etc.? Presumably fixed-frequency and multisync monitors are 90% the
same inside (at least in concept)? Certainly the big old workstation
monitors I've seen inside of seemed to be nicely broken into stages...
cheers
Jules
I went scrounging again today and found a new source of old computers.
There I found and passed up a HP 9000 835 and a HP 9836A. BUT I did bring
home a HP 9000 520 (aka HP 9020). :-) I used to think the HP 9845 was big
and heavy but not any more! I don't know much about the 520 except that
they were supposed to be the replacement for the HP 9845 but had
developement problems and were very late getting into production and few of
them were sold. I believe it has BASIC in ROM but I'm not sure. Does anyone
have docs for these? It has two HP-IB cables that are connected internally
and a 15 pin socket under the front edge. What are they for? I picked up a
HP 9153 hard drive that was in the same box with the 520. I'm hoping that
there's software for the 520 on it.
Joe
Urgent Inquiry for ghetto blaster
Dear Sirs,
We are an international trading company, mainly serving the European
industry.
The Bitways Group purchases globally on own account and then resells the
products to various clients. Our aim is to source globally and to offer our
clients the best prices worldwide.
>From one of our own or rented databases we have retrieved your address as
potential supplier of the product(s) we would like to purchase at this time.
If you can promptly give us your very best quote you might be chosen as the
supplier we have been looking for as early as next week.
Please offer any kind of stocklots you might have available. Please provide
3 (three) samples for evaluation purposes.
Please let us know your best quote as this will enable us to work more
efficiently.
In conclusion I would like to ask you to send your company?s detailed
address, your bank detail, your VAT number (if applicable) and pictures of
the inquired item(s) along with your quotation.
If you can not reach us by e-Mail (Please check if your provider is listed
at the ORBS-list. If so your e-Mails are not being forwarded to us!) please
print the e-Mail and fax it to +49-40-28800-111.
Looking forward to hearing from you soon, we are
Yours sincerely,
BITWAYS GLOBAL SOURCING GMBH
M.Kuehn
Global Sourcing Manager
Team Blue
Hohe Br?cke 1
Haus der Seefahrt
D-20459 Hamburg
Tel.++49(0)40/28800-301
Telefax.++49(0)40/28800-401
E-mail:mike.kuehn@bitways.de
www.bitways.de
BITWAYS GLOBAL SOURCING GMBH
M.Kuehn
Global Sourcing Manager
Team Blue
Hohe Br?cke 1
Haus der Seefahrt
D-20459 Hamburg
Tel.++49(0)40/28800-301
Telefax.++49(0)40/28800-401
E-mail:mike.kuehn@bitways.de
www.bitways.de
New details on the SUN networking issue became available yesterday evening
when the second SUN decided to boot once more (we still don't know how that's
possible as it had claimed to have lost its battery-buffered Setup
information last time we powered it up a few months ago). However, both SUNs'
transceivers and the cable work as each SUN can detect the other's presence. The
printer cannot be pinged or sent data to, no matter which SUN tries or to which of
the both remaining transceivers it is connected.
Peter Turnbull wrote:
>Have you tried pinging the printer by it's IP address instead of
>it's name? Try a broadcast ping?
No, not yet, but I will when I get home in the evening. Luckily, I found the
IP adresses in a stack of handwritten papers we were given together with all
that stuff. As we're not too familiar with the commands, how is a broadcast
ping done?
>Have you checked the printer settings to make sure it's using the
>correct IP address? Is that set from its panel, or by RARP/BOOTP/
>DHCP? If the latter, it needs a server to boot.
Tony Duell wrote:
>That printer isn't attempting to get information (IP address,
>software, whatever) from a server, is it?
We're trying hard at the moment to find the printer manual. We know we have
it somewhere, but it's buried...
Peter Turnbull wrote:
>If the Sun didn't get a valid signal from the transceiver when it
>booted, it might not have enabled le0, or there might not be a route
>through it.
>Not necessarily, it might not have brought up the le0 interface if the >AUI
cable was disconnected when it powered up.
We switched off everything before reconnecting the cable and when we booted
the next time, we did not get any le0 errors. Besides, the SUNs can see each
other over the network, so the connection must be enabled.
>However, if there is an LED for either transmit or receive, it
>should flash when you try a ping. If it doesn't, either the Sun
>isn't sending the packet or there's a short circuit.
>Both LEDs? I'm guessing as to what the LEDs do, but that probably
>means it's transmitting something. Maybe an ARP or BOOTP request. >It
depends on what the LEDs do. One might be for collision, in
>which case there's a cable fault if it flashes. More likely one is
>transmit and the other receive, in which case what you see is
>correct, it transmits a packet and simultaneously detects what it's
>transmitting.
>Hmm... What are the LEDs on the transceivers labelled? Mine have 5
>LEDs: Power, SQE, Transmit, Receive, and Collision. (I also have
>several transceivers with no LEDs, or just one for power, but none
>with three.)
No, there isn't. The LEDs on the transceivers are only PWR (Power), SQE (as
on yours) and COL (which must be Collision). Nothing for TX or RX, although
that would be much more helpful for troubleshooting.
--
GMX - Die Kommunikationsplattform im Internet.
http://www.gmx.net
In a message dated 3/26/01 9:56:39 AM Eastern Standard Time,
brian.roth(a)firstniagarabank.com writes:
>
> I also have a couple of Sun SPARCstation LC's free to good homes. They do
> work but no monitor, keyboard or mice. Just the lunchbox. Also, I do not
have
> the root passwords.
>
> Brian.
I could use one of these Brian.
-Linc Fessenden
Hi All,
http://www.stmarks.pp.catholic.edu.au/vax
Minor updates to the Vax 6000 Website.
http://www.stmarks.pp.catholic.edu.au/vax
Additions/Reformatting/Corrections to the Adapter listings.
Thanks to Antonio Carlini for feeding me some tables of data that have
now been integrated.
There are now 2 Adapter pages, one for BI and one for XMI.
Cheers
Geoff Roberts
Computer Systems Manager
Saint Mark's College
Port Pirie,
South Australia
geoffrob(a)stmarks.pp.catholic.edu.au
netcafe(a)tell.net.au
ICQ: 1970476
In a message dated Mon, 26 Mar 2001 9:20:32 PM Eastern Standard Time, "Obi-Wan(a)MacHeretics.com" <kyhansen(a)speakeasy.net> writes:
<< I'm in for a complete station. I know the cubes are spoken for.
Kyle Hansen
>>
Just a thought, but does anyone on the list have the OS for these beasties? I just checked and NetBSD isn't quite ready for prime time on them yet, and neither is Linux unfortunately...
-Linc Fessenden
From: Jim Strickland <jim(a)calico.litterbox.com>
>Just stumbled across this and thought the CPM folk might find it useful.
>http://www.htsoft.com/software/cpm/index.html
>
>It's a C compiler by a cross-compiler maker.
Good reminder, it's been available for several years (its on the WC Cdrom
c1994).
Hi-tech C compiler is one of the better ones for the CP/M OS.
Allison
Just stumbled across this and thought the CPM folk might find it useful.
http://www.htsoft.com/software/cpm/index.html
It's a C compiler by a cross-compiler maker.
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
-----------------------------------------------------------------------
BeOS Powered!
-----------------------------------------------------------------------
For some reason my 7.1 Macs won't switch their connections to EtherTalk from
LocalTalk. They just say "an error has occurred" and put me back to LocalTalk.
I do have the EtherTalk Phase 2 extension installed.
I know these cards are good because they pass the Farallon diagnostics and
the cable tests fine as well. They're EtherWave NuBus (PN890-TP).
I'm using the latest Farallon EN software from their website. The cards also
work fine in NetBSD, just not MacOS.
Ideas?
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- If you cannot convince them, confuse them. -- Harry S Truman ---------------
Ethan,
Its one of my favorites. Still looking for the RC25 to fill the hole though. The console tape drives need to be repaired so it no longer boots. I remember hearing that someone either tried, or successfully used a PC with a term program to send over the bootstrap loader.
Brian
Cute package, the 11/725. I used to have one (got it right when DEC
interdicted VMS license transfers for one month to attempt to force
buyers of used hardware to purchase new licenses... failed miserably).
It was on loan to a friend's company that was bought out and moved
without notifing me that they were taking my VAX out of state. :-(
I even had the floating point accelerator in it. At the time, it was
my best number cruncher (14 years ago).
-ethan
Brian Roth
Network Services
First Niagara Bank
(716) 625-7500 X2186
Brian.Roth(a)FirstNiagaraBank.com
The software for DECMouth, of course!
MWHAHAHAHAHA
Another Bad Pun, Courtesy of
Will J
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
Hi All,
I finally got the docs for the CPM module for the HP 86/87. After
reading them it appears that you need specail software to make the module
work. Does anyone have the software for it?
Joe
Hi folks, we powered up the working pizza box and the laser this weekend. At
first we got a lot of
le0: no carrier - transceiver cable problem?
style errors during bootup and in the console window, but they disappeared
when we re-seated the AUI cable on the SUN. Unfortunately, that was not all of
the problem. If you now try to print to pa3 (which is the CalComp?s name),
the job is stored in the printer queue, but there also appear a number of
error messages "No answer from host pa3 on parallel port" when you LPQ for it.
PINGing for the printer ends up with "no answer from pa3".
Is the SUN trying to send the data to a parallel-port printer although the
CalComp is on the Ethernet?
Peter Turnbull wrote:
>Do those transceivers have a set of LEDs on them? I suspect not, but that
>might tell you if anything is being transmitted/received.
On the transceiver connected to the SUN, the PWR (green) and SQE (yellow)
LED are alight as long as the system is powered up. The only (green) LED on the
printer?s transceiver is also on as long as the printer is.
If I connect the printer to one of the 3-LED transceivers, the PWR LED is on
all the time and the other two give very short flashes when the printer has
completed its warming-up cycle and is in ready mode.
There are also three LEDs on the back side of the printer next to the AUI
connector; two of them (green and orange) illuminate during the warming-up
phase, then the orange one goes out and the green one begins to flash.
I have not noticed any flickering etc. of LEDs when trying to print or ping.
Tony Duell wrote:
>How hard is it to swap over the transceiver cables between the 2 Suns? If
>it then works, you know the problem is either the transceiver that used to
>be connected to the working sum, or a nasty problem caused by reflections >on
the cable
It is very easy, as the machines stand nearly side-by-side on two
neighboring desks and the cable (with the four Transceivers on it) is coiled to a ring
and lying behind them. (No, not a very tight ring or one with sharp
bends?n?twists in it
) I haven?t yet had the time to try it, but:
If I connect the printer to one of the 3-LED transceivers, the PWR LED is on
all the time and the other two give very short flashes. However,
transmission of data isn?t possible either.
Bill Gunshannon wrote:
>First, "a piece" of yellow cable won't work. The lengths were part of the
>spec and very important. Having to do with reflections and such (anybody
>here still have a TDR??)
I already mentioned the network ran on our ?piece? until we installed that
new tap and transceiver, and that didn?t change it?s length as it wasn?t
inserted after cutting the cable apart but only connects by its contacts
penetrating the insulating layers of the cable. I know that the length is an integer
multiple of 2.5m (2.5m between the black bands and 1.25m between outmost band
and terminating resistor on each end) and my guess goes towards a total
length of either 12.5m or 15m (5 or 6 times 2.5m).
Tony Duell wrote:
>The black bands should be every 2.5m (+/- 5cm) along the cable.
>There must be only a minimal 'stub' between the cable and the transceiver
>(<3cm seems to be the accepted value)
Bill Gunshannon wrote:
>Second, The cable is marked with black stripes. The taps must go on these
>stripes.
As the cable already came from the factory with the bands on it (I was told
that), they should have the correct spacing (I really didn?t want to uncoil
all that stuff just for measuring!) and on the transceivers that already were
on the cable, the band is:
-in one case, inside the tap block
-in two cases 1 and 2cm out of it (which means ca. 6cm away from the core
contactor pin).
We placed the new one also in such a way that the band is now inside the tap
and not visible from the outside.
How about the distance terminator to first tap? I measured here about 1.25
meters, which would be half the tap-to-tap distance. As I don?t know much
about signal transmission in Coaxes, does this make as much sense as it seems to?
Thanks for all given and coming help on solving this.
Arno Kletzander
--
GMX - Die Kommunikationsplattform im Internet.
http://www.gmx.net
On 2001-03-25 classiccmp(a)classiccmp.org <Russ Blakeman> said:
>I've been able to get a lot of older/odd battery packs in the past
>from Batteries Plus, a chain of battery suppliers. Some had to go
>to their "lookup techs" but within 3 days they always had a source
>for one. They aren't always the cheapest though, a lot depends on
>the individual franchise owner and how much he/she will haggle with
>you. I have a reseller account with a nearby one and the owner
>always gives me a decent break.
Before I went on the Internet, I went to Batteries Plus. Yes, they
did list a battery for my Sharp PC-4502, yet they didn't call me
back and actually "forgot" to get back with me, even though they had
it written down in a notebook on their counter. Considering how
quickly I got serviced from the Raymond Sarrio company, I'd consider
them a serious contender with Batteries Plus in the category of classic
machines.
Jerry... on his IBM PC/AT 5170 Model 339 | My laptop computer's a
***** 9600kbps/30MB HD/512k RAM/8 MHz | Tandy TRS-80 Model 100
Net-Tamer V 1.11.2X - Registered
The LCD package for LRP is at:
http://lrp.steinkuehler.net/Packages/LCDProc.htm
I might be able to help you with parts for your RK11-C restoration. You have a working classic-8?
Brian.
I even have an LRP package for interfacing an LCD to my router so you can
> watch the IP traffic.
Love to get a URL to that. I run LRP myself, and set them up for friends
with cable modems about every other month.
> Way cool project BUT the display is still in the bubble wrap. Same problem,
> little time.
It's all about priorities. I have a set of back burner projects that have been
there for ten plus years, but they are still there (RK11-C restoration, PDP-8/i
re-restoration, TU-58 emulator, Straight-8 cleaning (printer's ink), and such).
-ethan
Brian Roth
Network Services
First Niagara Bank
(716) 625-7500 X2186
Brian.Roth(a)FirstNiagaraBank.com
> From: Ethan Dicks <ethan_dicks(a)yahoo.com>
>
> I have the delay line needed to add the second core stack to
> the -8/i. That is another goal - upgrade the mem on the -8/i and try to
> get some sort of mass storage device on it and install some kind of OS on it.
> Got peripherals (RK05, RX01, DF32/DS32, TU56, PR04). Lacking in pre-omnibus
> interfaces.
>
The DF32 is a external bus device so just hook up the 11 interface cables
and away you go. I am restoring one of my 8/I's with DF32 now, computer
is running and hope to have the drive finished this weekend. I should
finish the DF/DS32 manual scanning also this weekend, it will be up with
the rest soon and more pictures of the 8/I and DF32. The disk monitor
system runs on DF/DS32, the paper tape image (and DF32 diags etc) are
in ftp://ftp.pdp8.net/software/paper_tapes/ docs
http://www.pdp8.net/query_docs/query.shtml
OS/8 will run with a DF32 and DS32 and 8k but may not have enough space to
be too useful. I also may be able to help with 8/I parts.
The reader/punch can also be hooked up to an 8/I if it had the
interface cards in the 8/I.
Longer term the 8/I will join the 8/E runnable online although I
will have to replace the disk heads with an emulation since the drive
lands the heads on the disk when it spins down so has a limited number of
spin down cycles. The platter is nickel cobalt alloy so is more durable
than the iron oxide ones (ex RK05's) when the head does hit it.
I also have a Straight 8 maintenance manual on the too scan list, if
you need it (or any others, I may have them) before I get to it let me
know and I will do it sooner.
David Gesswein
http://www.pdp8.net/ -- Run an old computer with blinkenlights
<sigh> another reason not to use Micros~1 products for email...
In a message dated 3/6/01 7:33:09 PM Eastern Standard Time,
rigdonj(a)intellistar.net writes:
<< >
>The following came to us at work, and I wanted to pass on the info:
>
>STRICOM has received official notification of a new virus in the wild
called
>the Naked Wife Virus.
>
>This virus is sent by email message with the subject of the "Naked Wife"
or
>"FW: Naked Wife" with text of "My wife never looked like that! ;) ".
>There is an infected attachment named "nakedwife.exe". When opened, this
>virus resends itself to other recipients in address book. This virus also
>affects all .dll, .exe, .com, and .bitmaps files. Do not open this
email
>or the attachment if received.
>
>Information has not yet been received as to whether Norton or McAfee will
>detect and clean this virus.
>
>Microsoft Outlook email systems are the primary target of this virus and we
>do not believe Lotus Notes is affected >>
--
DB Young Team OS/2
old computers, hot rod pinto and more at:
www.nothingtodo.org
I was amazed to find a local classified ad for a Hero Jr in the Saturday morning paper and soon after I was owner of a very clean Robot for a few dollars (about time I had that sort of luck). Unused for many years but just some cobwebs inside, no corrosion. No charger or remote control or cartridges or documentation unfortunately, but there is lot of technical info on the web I have found today.
The old battery will not take a charge using my car [translation - auto] battery "trickle" charger, so I'll have to wait 'till next week to buy a new 12V 3.5A sealed lead/acid battery - that's how this Australian model was powered - not like the 6V batteries described on the web pages for the Hero Jr. And I don't have a 12V PSU to power it up with in the meantime. Am I using an appropriate re-charging device? And could I use the trickle charger itself as the PSU for testing? A multimeter reads about 13V across the terminals when it is powered up, but with my minimal electrical knowledge I do not dare try something that could be fatal to the Hero.
None of the Web pages mentioned how much this thing cost new (Feb 85 manufacture date I suspect by a sticker on board inside) and I am curious about that.
If anyone has any warnings or "gotcha's" about working with this thing, I'd be glad to hear from you. Other than that, I can't wait - from the info on the web it sounds great fun. And it goes to show, however rare or unusual the item is - eventually one of them turns up here in Brisbane, Australia.
Phil
Both the SPARC's have been spoken for. If I get any more I'll post them here again.
Thanks,
Brian.
Brian Roth
Network Services
First Niagara Bank
(716) 625-7500 X2186
Brian.Roth(a)FirstNiagaraBank.com
I picked up an Apple Lisa this weekend and it is missing the keyboard and mouse. Anyone on the list have one they would like to part with? trade? money? etc...
I also have a couple of Sun SPARCstation LC's free to good homes. They do work but no monitor, keyboard or mice. Just the lunchbox. Also, I do not have the root passwords.
Brian.
Brian Roth
Network Services
First Niagara Bank
(716) 625-7500 X2186
Brian.Roth(a)FirstNiagaraBank.com
I seem to remember crawling through the interstitial floors in the
University of Kansas Medical center dragging 500 feet of yellow cable
between our VAX and a Siemens MR scanner. I may have some pieces of the
cable and a vampire tap or two if I can find them. I'll bet the original
cable is still there just unused. We never removed old cable just left it
in place. We did have to make it look like the "official" network cables or
the hospital wondered who had been in the interstitial spaces. It's kind of
hard to tap a cable while holding a flashlight in your mouth and trying not
to fall into any of the patient examining rooms below you.
I also have some of the cabletron boxes with a heartbeat that we used to
convert thin coax to RJ45 or Thicknet to RJ45, in fact there is one is use
across the hall from me connecting the GE CT scanner to a 3D workstation. I
see them ocasionally at my local computer surplus, the PC guys want to throw
them away because they don't recognize them.
Allied Telesyn CentreCom MX10 IEEE802.3 microtransciever 10 base 2 (mau)
Mike
mmcfadden(a)cmh.edu
On Mar 21, 7:39, Arno Kletzander wrote:
> we're running a *small* network consisting of two Sun SPARCstations (1+
and
> 2) and a CalComp CCS600 ES laser printer. They're all connected to
> "Transceivers" with 15-pin Sub-D connectors on them which sit along a
yellow cable
> (approx. 10mm = 4/10" in diameter). AFAIK this concept is called "Thick
Ethernet"
> (IEEE 802.3), am I right?
Yes, that's right.
> we've put another transceiver on the cable strictly according to the
> installation guide that came with it (drilling hole into cable with
> recommended tool etc...).
> Since we've done that, it's no longer possible to print from one of the
> SUNs to the CalComp although the PC is not yet connected to the
> transceiver.
> The whole assembly looks somewhat like this:
>
> TermRes _______ _______ _________ _______
TermRes
> I-------I TC1 I------I TC2 I------I TC3 I------I TC4 I------I
> I I I I
> SUN 1+ SUN 2 CalComp (planned) PC
It sounds like you've shorted the cable. Do those transceivers have a set
of LEDs on them? I suspect not, but that might tell you if anything is
being transmitted/received. You could try removing one terminator and
testing the DC resistance between core and shield of the coax; it should be
50 ohms with nothing powered up.
If you have shorted it, the best solution is to cut out the damaged part,
fit an N-series plug to both ends, and put a coupler between them. Or,
instead of a coupler, a transceiver with N-series connections (which are
more common and cheaper than vampire taps anyway). Another way is to
discard some or all of the thick coax, and use thin coax with BNC
connectors instead. Then you use BNC T-pieces to connect to miniature
transceivers, which are fitted directly to the 15-pin sub-D AUI connectors
on the backs of the machines, with no bulky drop cables. You can get
N-to-BNC adaptors and BNC terminators for pennies.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
On Mar 26, 7:28, Arno Kletzander wrote:
> Hi folks, we powered up the working pizza box and the laser this weekend.
At
> first we got a lot of
> le0: no carrier - transceiver cable problem?
> style errors during bootup and in the console window, but they
disappeared
> when we re-seated the AUI cable on the SUN. Unfortunately, that was not
all of
> the problem. If you now try to print to pa3 (which is the CalComp?s
name),
> the job is stored in the printer queue, but there also appear a number of
> error messages "No answer from host pa3 on parallel port" when you LPQ
for it.
> PINGing for the printer ends up with "no answer from pa3".
> Is the SUN trying to send the data to a parallel-port printer although
the
> CalComp is on the Ethernet?
Maybe. Have you tried pinging the printer by it's IP address instead of
it's name? Try a broadcast ping? Have you checked the printer settings to
make sure it's using the correct IP address? Is that set from its panel,
or by RARP/BOOTP/DHCP? If the latter, it needs a server to boot. If the
Sun didn't get a valid signal from the transceiver when it booted, it might
not have enabled le0, or there might not be a route through it. Check with
"netstat -rn" and "ifconfig le0".
> Peter Turnbull wrote:
> >Do those transceivers have a set of LEDs on them? I suspect not, but
that
> >might tell you if anything is being transmitted/received.
>
> On the transceiver connected to the SUN, the PWR (green) and SQE (yellow)
> LED are alight as long as the system is powered up.
That's how it should be. However, if there is an LED for either transmit
or receive, it should flash when you try a ping. If it doesn't, either the
Sun isn't sending the packet or there's a short circuit.
> The only (green) LED on the
> printer?s transceiver is also on as long as the printer is.
That probably just means it has power.
> If I connect the printer to one of the 3-LED transceivers, the PWR LED is
on
> all the time and the other two give very short flashes when the printer
has
> completed its warming-up cycle and is in ready mode.
Both LEDs? I'm guessing as to what the LEDs do, but that probably means
it's transmitting something. Maybe an ARP or BOOTP request. It depends on
what the LEDs do. One might be for collision, in which case there's a
cable fault if it flashes. More likely one is transmit and the other
receive, in which case what you see is correct, it transmits a packet and
simultaneously detects what it's transmitting.
> There are also three LEDs on the back side of the printer next to the AUI
> connector; two of them (green and orange) illuminate during the
warming-up
> phase, then the orange one goes out and the green one begins to flash.
> I have not noticed any flickering etc. of LEDs when trying to print or
ping.
Hmm... What are the LEDs on the transceivers labelled? Mine have 5 LEDs:
Power, SQE, Transmit, Receive, and Collision. (I also have several
transceivers with no LEDs, or just one for power, but none with three.)
> Tony Duell wrote:
> >How hard is it to swap over the transceiver cables between the 2 Suns?
If
> >it then works, you know the problem is either the transceiver that used
to
> >be connected to the working sum, or a nasty problem caused by
reflections >on
> the cable
Not necessarily, it might not have brought up the le0 interface if the AUI
cable was disconnected when it powered up.
> on the cable, the band is:
> -in one case, inside the tap block
> -in two cases 1 and 2cm out of it (which means ca. 6cm away from the core
> contactor pin).
> We placed the new one also in such a way that the band is now inside the
tap
> and not visible from the outside.
Sounds like two of the original tranceivers are slighly off position
according to the specification, but on a relatively short cable with only a
few transceivers, I doubt a small deviation matters very much.
> How about the distance terminator to first tap? I measured here about
1.25
> meters, which would be half the tap-to-tap distance. As I don?t know much
> about signal transmission in Coaxes, does this make as much sense as it
seems to?
The distance to the terminators doesn't matter, it doesn't have to be any
particular distance.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Will an Apple 300i external SCSI CD-ROM work with a Sun? I know this has
been talked about here before but I don't remember what the verdict was
or if any modifications can be made.
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- Let us live! Let us love! Let us share our darkest secrets! ... you first. -
>From: Mike Ford <mikeford(a)socal.rr.com>
>Subject: Re: AAUI
>
>> Apple can't be blamed for the lack of drivers for various
>>cards though. I have used any number of PC PCI boards in my PCI
>>Mac's, including USB, Firewire and video boards. The slots
>>themselves are compliant with the PCI standard. It's just a matter
>>of lacking 3rd party drivers. Creative Labs is releasing a Mac
>>version of it's SB Live, NVidia has done Mac versions of it's
>>Geoforce boards, 3Dfx did Mac versions of it's Voodoo4 and Voodoo5
>>boards just before they went under, and Adaptec has done Mac versions
>>of many of it's SCSI boards.
>
>My back still hurts, so I'll keep typing....
>
>Sure I can blame Apple for the lack of drivers, if stinking Apple wrote a
>"generic" driver or even published a stable API for its non standard PCI
>byte swapped version of PCI then plenty of cards would have worked on the
>mac. As it was, ONLY a handfull of often third parties ever bothered to
>write a mac driver for a PC PCI card, and mac users paid through the nose
>for those items.
To some degree, though, I wonder if there isn't a supply and demand
issue in effect.
For instance, I've never gotten why no one has written a 3rd party
OpenTransport driver for common PCI Ethernet NICs such as the
EtherLink III or the cheap NE2000 clones. Apple has published sample
driver code and the board-level code is public enough from NetBSD or
Linux, yet no one has ever put the two together. From what I can
tell, the same is the case over in the PCMCIA world with few cards
having MacOS support.
>Firewire was always an Apple first product, my guess is that some PC
>products may have Apple ancestry in the driver code or at least high level
>design. Sort of true for USB, except in the PC world about half the cards
>meet the open standard that is what Apple drivers recognize, and half don't
>and hence won't work with Apple drivers (nobody "really" AFAIK makes a
>Apple specific USB driver).
OHCI (supported by Apple) versus UHCI. Ironically, I find that a lot
of the cheapest cards are the compatible ones.
>PCI Video cards I follow pretty closely, and MAYBE a total of 10 cards work
>with macs, with half of those being somewhat generic PC PCI cards. Not
>moving closer to the AGP PC standard was killing Apple video performance,
>so maybe the latest macs have better compatibility, I don't know the
>details of that however.
Video cards are the worst since it is not only a matter of drivers,
but also of firmware. As I understand it, a video card has to have
OpenFirmware code for it to be usable.
>Oh happy day, we get the two year old most overpriced PC sound card,
>without all the features, finally for the mac.
Okay, but why do I want it anyway?
>I have fun with old macs, I currently use a Starmax for daily stuff, but I
>am moving to daily PC use because I am sick of browsers on the mac that
>don't work. In a word, javascript, love it hate, heck I don't even know
>exactly what it is, but it doesn't work on mac browsers and that means many
>pages I want to access I can't.
I'm curious... what browser versions have you had the problem with?
iCab aside, I've had less trouble with Javascript implementations
than with sites that arbitrarily lock out non-Windows users, even if
the site would otherwise work.
<<<john>>>
I would like to find some sort of mapping software that will allow me to
input a set of longitude and lattitude coordinates and a mileage radius
>from that point, ideally backset with the boundaries of the US States
where the coordinates lay. What I am hoping to get is a visual of
the preponderance of data points.
If you took the VCF East survey (http://www.vintage.org/survey.html)
you'll remember that one of the questions was to the effect of "you would
come only if it is within X miles" where X was a number you input. So I
would like to see where most of the data points and their radius areas
intersect.
If anyone has any suggestions for some free mapping software of this ilk,
please e-mail me privately <sellam(a)vintage.org>. Otherwise I guess I'll
just have to write me some :)
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
I was at the Dayton Computer show last weekend (at the Hara Arena, same place
as the Dayton Hamvention) and picked up a handful of, I thought, 8MB parity
SIMMs. They are, but they happen to be 80-pin, not 72-pin.
So... what strange DEC gear uses them? Old AXP boxes? Old MIPS boxes?
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
__________________________________________________
Do You Yahoo!?
Get email at your own domain with Yahoo! Mail.
http://personal.mail.yahoo.com/
Hi
Well today was kinda slow I guess....finds:
1 fully equipped C128 -1541 II and both P.S.s...$10
1 1084S monitor $5 (cant pass them up at that price even if I have about 10 of these...)
This is a "weird" (I refuse to use L@@K RARE! because of its over use on ebay) one:
1 AES 7100 Office System. Obviously a Z80 machine from the early 1980s. >From AES a Montreal, Canada company (local stuff!)
1 know of one other non-active collector (still collecting?) who has one. He put up photos so Ill post the URL for there so you can have a look at it and maybe tell me more about this thing:
http://www.total.net/~hrothgar/museum/AES7100/
Its the exact same computer. Mine is in terrific shape but I dont have the manuals like this guy does. I do have 2 original boot disks that I was told will boot (to what?) the machine....have not tried it yet...
These are "hard sectored" 5 1/4 disks...eeesh...and I only have the 2 original ones...ooooh
The look of this computer is very "Space 1999ish" if you ask me...
Perhaps this person has already posted here about this machine but I taught I would try again and maybe perhaps something new will come up...
Claude
Canuk Computer Collector
http://computer_collector.tripod.com
On Mar 24, 18:25, Mike Ford wrote:
> I was at Micro Center last night (in So Cal) and they had a stack of grey
> flip top bins with a 99 cent cable sale. Since I have thousands of cables
> at home I pawed through it to the bottom of the four bins on top and
peeked
> into one of the bins below. Lots of AC power cords, but I did pull out
> about a 20' section of some kind of fibre. Since I know a have a AUI FDDI
> type mau's I am guessing putting a section of fibre in my ethernet
network
> is fairly practical. Any suggestions on how to do it?
FDDI is a ring system, not point to point like FOIRL and 10baseFL, and it's
*not* Ethernet. It uses different protocols. I can't remember if you can
have a ring as small as 2 nodes, but I don't see why not. Anyone?
What kind of fibre it is (backbone or patch lead; 50/125 or 62/125
multimode or single mode)? Is the fibre terminated with suitable
connectors? If not, it won't be cheap to get connectors put on the ends.
Is it damaged (rudementary test by shining a bright light down it, though
that will only tell you if it's really badly damaged, it won't tell you
much else about losses). IIRC, FDDI uses lasers rather than LEDs (FOIRL
and 10baseFL use LEDs) so don't look into them!
If your MAUs really are FDDI, take a look at the FDDI FAQ at
http://www.cicese.mx/~aarmenta/frames/redes/fddi/FDDIFAQ.html and the FDDI
tutorial at http://www.iol.unh.edu/training/fddi/htmls/index.html.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Ok...
So far since my email myself and 4 others are interested in the
equipment, I emailed the seller and asked if I could pay in advance by
PayPal to secure the equipment and arrange for next weekend to drive
down and pick it all up. I personally want dibs one 1 cube, monitor
and color printer, so there is still a ton of stuff left, anyone who
wants to join on, please resond back, the more the merrier and everyone
will walk away with some great equipment & software for great prices, so
reply and lets build up the list, please only respond if your serious
and will follow through, I'm putting $1,000 out of my pocket on this to
secure all of this stuff for everyone, please be curteous and not back
out.
Curt
I just received a load of Apple MACS. Among them about a half dozed
LC550's from a school. They work great except they are password
protected except the student accounts. Is there a way to bypass the
password protection on these or will they need an operating system
reload? What is the latest that these will run. They have 7.5.3 loaded
now.
Brian.
A few weeks ago, I requested information about a battery for
my Sharp PC-4502 (a portable PC from the mid to late 1980s),
yet received no replies. The original batteries made for the
Sharp PC-45XXs were from Yuasa, which no longer makes them.
The main problem with this battery is its odd shape; other
batteries have similar specifications, but will not fit
inside this portable PC.
Just as I was about to give up, I simply did a Yahoo search
on Sharp batteries and the PC-4502 and found a source! If
anyone needs a battery for these machines, go to The Raymond
Sarrio Co. at http://www.sarrio.com -- and if you specifically
need a battery for a Sharp PC-45XX like mine, go to this site:
http://www.sarrio.com/sarrio/laptopsh2sy.html
Phone: (800)413-1129
FAX: (508)355-8261
I bought the battery for only $49.00, including free 3-day
air mail! (They used to cost around $75.00.) The AC
adaptors are also listed alongside their batteries, in case
you need one of those, too.
These folks can also make a lot of batteries, if for some
reason they don't have your exact make. So there *is* still
hope for old machines when you least expect it.
Jerry... on his IBM PC/AT 5170 Model 339 | My laptop computer's a
***** 9600kbps/30MB HD/512k RAM/8 MHz | Tandy TRS-80 Model 100
Net-Tamer V 1.11.2X - Registered
On Mar 24, 20:24, ajp166 wrote:
> From: jpero(a)sympatico.ca <jpero(a)sympatico.ca>
> > > I haven't been following this thread as close as I should.
> > > I was working at Intel during the period when ether net was just
> > > being defined. The reason for the 2.5m spacing was to insure that
> > > any collision was detected by all of the unit on the wire.
> > > The idea was that the pulses would be exactly overlapped. This was
> >
> > In that case, surely the correct spacing of transceivers would depend
> on
> > the velocity factor of the cable. And while the stnadard specifies the
> > spacing (2.5m +/- 5cm IIRC), it doesn't specify the velocity factor
> > (other than it must be greater than 0.77 IIRC).
>
> I recall that in musical stuff and in wirings often these waves
> travelling in any tube or wirings tend to be standing waves that why
> that marking is where the amptitudes is greatest.
That can't be the case with 10Mb thick ether because the distance between
markings is about 1/9th of the wavelength.
I did find one thing that relates back to something Bill mentioned in an
earlier post about specific lengths.
>From http://www.ots.utexas.edu/ethernet/10quickref/ch3qr_4.html
The specifications note that the thick coaxial segment should
ideally be built using a single piece of cable from the same
cable spool or from cable spools all manufactured at the same
time (known as a cable lot). If cable from different lots is
used to build up a thick coax segment, then the specifications
note that the sections of cable used should be 23.4 meters,
70.2 meters, or 117 meters in length (all lengths may be +/-
0.5 meters). The reason for using these lengths of cable is to
minimize the chance of having excessive signal reflections
build up due to the slight variations in electrical
characteristics that can occur between different cable
manufacturers or cable lots.
The basic distance quoted is the same as the distance I calculated
yesterday for one bit time: 23.4m.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Any way I can put a BSD filesystem on a floppy from the Sun boot monitor?
*hoping*
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- You've got to have a gimmick if your band sucks. -- Gary Giddens -----------
From: Sellam Ismail <foo(a)siconic.com>
>On Wed, 7 Mar 2001, John Foust wrote:
>
>> Why fault Microsoft for making products that are popular and common?
>> You might as well blame Ford for drunk drivers. I agree that Outlook
>
>If MS would just give us the source code, we could fix it for them.
>
>Sellam Ismail Vintage Computer
Festival
Dont need no speghetti code to fix it. Just remove the dumb user.
Seriously, there are a bunch of things that users should to to elimintate
most
of the insanity.
-Disable VBS scripting, that stops a raft of buggies right there.
- disable open after preview for 5sec .
- disable auto display of pictures
- enable empty deleted folder on close (delete really does then).
Thats just a few of the simpler things that really do help.
Another is dont run MacAfee antiVirus as it has failed on test systems
where Norton or Fsecure did catch it.
Allison
From: Bill Gunshannon <bill(a)cs.scranton.edu>
>
>Actually, as coax for RF purposes, it's junk. It is the lossiest of
It's not all that bad but my use would be for a colinear array and
lossy cable does work ok there even at uhf.
>it weren't so lossy, it would be connected to one of my antennae right
>now.
Still beats RG58A/u though 50ohm .500 hardline is a prefered wire.
Allison
From: jpero(a)sympatico.ca <jpero(a)sympatico.ca>
> > I haven't been following this thread as close as I should.
> > I was working at Intel during the period when ether net was just
> > being defined. The reason for the 2.5m spacing was to insure that
> > any collision was detected by all of the unit on the wire.
> > The idea was that the pulses would be exactly overlapped. This was
>
> In that case, surely the correct spacing of transceivers would depend
on
> the velocity factor of the cable. And while the stnadard specifies the
> spacing (2.5m +/- 5cm IIRC), it doesn't specify the velocity factor
> (other than it must be greater than 0.77 IIRC).
I recall that in musical stuff and in wirings often these waves
travelling in any tube or wirings tend to be standing waves that why
that marking is where the amptitudes is greatest.
Standing waves in this case would be a reflection of poor termination
and cause errors.
The measure was to inustre that using the resolution of the system
you could resolve to half the distance of a tap (1.25 meters or
less than 5ns).
The velocity factor of the specified cable doesnt vary much
or at least not much if it's in spec. FYI yellow pipe is very good
cable. I could use 100ft of it right now.
Allison
On Mar 23, 17:42, Bill Gunshannon wrote:
>
> Two points.
>
> First, "a piece" of yellow cable won't work. The lengths were part of
the
> spec and very important. Having to do with reflections and such (anybody
> here still have a TDR??)
I've not seen anything about lengths, except of course for the maximum
length and multiple-of-2.5m tap separation. I'm told the standard
specifically allows for lengths to be joined at intervals which are *not*
multiples of 2.5m, and the overall length does not have to be an exact
multiple either.
> Second, The cable is marked with black stripes. The taps must go on
these
> stripes. While I have known people who put the transcievers with the N
> type connectors between yellow segments and on the ends of yellow
segments,
> I have never known seen it recommended that you could/should cut the
cable
> to insert one of these. I fear that after one or two of them, you would
> move the spacing between tap locations enough to adversely effect your
> network.
I've never been aware of a problem with that. Our old Departmental network
(installed by my predecessors) consisted of several segments, many of which
had lots of N-series transceivers in them. I suppose, though, that when
using N-series transceivers, it might make some sense to chop out a small
piece of coax rather than just cutting it.
I don't have a copy of the standard, and I don't know if it specifies
vampire taps rather than the "taps" with N-connectors (which I dare say are
more properly called "tees") but I do know that it specifically allows a
segment to be made up of sections of cable joined with N-connectors, and
that simple joins do not have to be at multiples of 2.5m. Admittedly, good
practice was to use the same cable (ideally from the same drum) for each
piece, to prevent small impedance mismatches.
To do the maths, I find that the velocity factor for RG8/11U is 0.78, the
standard value for c (velocity of light in vacuo) is 2.998 x 10^8 ms^-2,
and the nominal frequency used for Ethernet is 10MHz, or 10^7 Hz. So one
cycle of the waveform occupies 0.78 x 2.998 x 10 m, which is 23.38
metres[1]. That sounds about right; that would mean about 21 cycles over a
500m length. But there's no obvious relationship between 23.something
metres and the 2.5 metre separation distance, it's about 1/9th. From that,
I can't believe that a small deviation in separation distances is going to
make a significant difference.
Unless someone can correct my assumptions, of course!
[1] Nitpickers might point out that my figure for the velocity factor is
less accurate than the 4 significant figures I used for c. So if I take
extremes (still within the Ethernet spec) at 0.77 and 0.80, the results
would be 23m and 24m respectively.
> This is, of course, assuming a production network and not two machines.
> But then. if all you had were two or three machines, a couple hundred
> feet of yellow cable seems pretty silly.
Unless they're a long way apart, or you're doing it for
demonstration/nostalgic/"because it's there" purposes :-)
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
In case anyone's interested, we've added some pictures of our new headquarters
at http://www.sua.f2s.com/fotografier/. Some pictures of fancy classic
equipment, as well as more contemporary junk. The pictures were grabbed with a
video camera, though, so the quality is not all that high.
--
En ligne avec Thor 2.6a.
G? med i SUGA, Swedish Usergroup of Amiga!
WWW: http://swedish.usergroup.amiga.tm/
BBS: 08-6582572, telnet sua.ath.cx, port 42512.
On Mar 24, 15:07, Dwight Elvey wrote:
> I was working at Intel during the period when ether net was just
> being defined. The reason for the 2.5m spacing was to insure that
> any collision was detected by all of the unit on the wire.
> The idea was that the pulses would be exactly overlapped.
As Tony has already pointed out, that can't be completely true, because it
would depend on the velocity factor of the cable, and the standard does
indeed specify only a minimum of 0.77 for that. Typical values for thick
ether are 0.78-0.8, which gives quite a variation. In addition, it would
require that pulses from two stations be in sync, which is unlikely since
there's no master clock.
> This was
> also the reason for the maximum length without repeaters. The
> packet size was such that any collision was sure to be detected,
> regardless of where one was along the cable.
Actually, the minimum packet size is what determines the maximum total
length *including* repeaters. The maximum length *without* a repeater is
determined by the signal losses.
> It doesn't make any difference where the end terminations are
> placed but both ends need to be terminated.
That's my understanding, too.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
OK folks, time to clear out more of the basement.
First of all, all of the below is *FREE*. But there is one gotcha:
if you want any of the documentation, you must haul away
some hardware too. No ifs, ands, ors, or buts about this. No shipping,
no holding, first-come, first-served. Pick-up only, I'm literally a feet
away from the Washington DC Beltway (495).
Now, the docs, all in original shrinkwrap:
KA660 CPU Module Technical Manual (EK-KA660-TM.001)
660QH Pedestal System Illustrated Parts Breakdown
KA660 CPU System Maintenance (EK-398AA-MM.001)
MS650-AF/BF/BH/BJ MOS Memory Option
VMS Installation and Operations: VAXstation I, II, II/GPX and Microvax I, II
DECVoice Software Reference Manual
Additionally, not in the original shrinkwrap:
A big box full of DEC Rainbow and Pro 350/380 binder boxes, some with software.
And the hardware:
Two BA11 10.5" high Unibus chassis, with power supplies and backplanes.
(Weight 60-70 lbs).
At least one spare power supply for the above chassis.
A couple of Unibus backplanes in various conditions.
A 4-foot high tape hanging rack for 9-tracks. Nice wood trim.
A whole bunch of other stuff that I could probably get rid of right now but
don't have the heart to commit to. If you're here with a truck and ask me
about it, though, it's probably yours.
If you're interested, please send an E-mail to "shoppa(a)trailing-edge.com".
Pick up will have to be on the weekend or possibly a near-future weeknight.
Tim. (shoppa(a)trailing-edge.com)
I've been following the thread about Chad's VAX and/or DEC machine.
Just picked up a pair of these VAX station 3200 and don't find much web
based data about them. I assume as they clearly say VAX , that they run
VMS. Anything I should know before taking a look inside? I don't want
any of that magic smoke to escape because of a stupid error on my part.
Thanks, Craig
On Mar 24, 9:44, Bill Gunshannon wrote:
> On Sat, 24 Mar 2001, Pete Turnbull wrote:
> > I've not seen anything about lengths, except of course for the maximum
> > length and multiple-of-2.5m tap separation. I'm told the standard
> > specifically allows for lengths to be joined at intervals which are
*not*
> > multiples of 2.5m, and the overall length does not have to be an exact
> > multiple either.
>
> Well, I could be wrong, but back in the days when I actually did this
> stuff for real I know I never saw yellow cable sold in bulk. Only in
> fixed lengths.
As far as I've seen, it's always been available in 100m and 500m drums --
which of course happen to be multiples of 2.5m -- but I'm sure that's just
because they're nice round numbers. Most cable is sold in those
quantities.
One of my catalogues does list 10,20,30, and 40m lengths fitted with
N-connectors, but again I'm sure that's just because they're round numbers.
> One would hardly expect they did this if there was no
> reason for it. I doubt I still have any catalogs from those days to
> look at. In any case, I doubt anyone is going to do a real network today
> with an really long sections of yellow cable.
> > I've never been aware of a problem with that. Our old Departmental
network
> > (installed by my predecessors) consisted of several segments, many of
which
> > had lots of N-series transceivers in them. I suppose, though, that
when
> > using N-series transceivers, it might make some sense to chop out a
small
> > piece of coax rather than just cutting it.
>
> Boy, that sounds scary. But then, what you see in practice does not
> always reflect good practice.
Agreed, but that was *common* practice.
> In the early days of ethernet, all kinds
> of strange (and even dangerous) things were done. Like grounding both
> ends of the yellow cable (no, you are not supposed to do that!!)
Yup, I know! I saw what hapenned when someone tried that :-) It did *not*
do anything any good at all! I also know what can happen when the unwary
(in this case, me) touch the screen while holding on to a locally-earthed
cabinet :-)
> Or thin-net installations with a length of RG58 between the T-connector
> and the transciever.
I know someone who tried that, too. It worked for a couple of short tees,
but after that everything fell apart. I know of a few installations which
use Safernet and EAD cable to prevent people trying it.
> > Unless they're a long way apart, or you're doing it for
> > demonstration/nostalgic/"because it's there" purposes :-)
> >
> I can see doing for demonstration purposes, but I would bet people would
> be more impressed if it was fiber. That's what I use small demos.
I have a pair of FOIRL transceivers and some fibre for exactly that, but
people still are interested to see real Ethernet.
> And I may be able to find stuff (like vampire taps) at work as
> although it is all inactive, I doubt that the yellow cable has been
> removed from the ceiling and wiring closets. Who knows, maybe they
> would even be glad to have the yellow cable pulled out too. It's a
> pretty long run (the length and height of the building) in two sections.
I'd like to get a vampire tap for my collection -- all of ours were
N-series, at least all the ones I've found.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
I just came across a piece of software I don't remember from 1987. It is
called "Poor Man's Network: A Networking Package for CP/M Computers." It
was put out by Anderson Techno-Products of Ottawa, Ontario. Judging from
the manual, it appears to have been a one- or two-man operation (nothin'
wrong with that - been there, done that).
It uses standard serial or parallel ports and is based upon a very modified
Christensen protocol to communicate with itself on the other computer (it
only support two computers - after all, you couldn't afford more than two
computers if you were really poor <g>). It's capabilities seem to have been
to allow allow read and/or write access to files on the other computer
(handy for those NorthStar hard-sector disk file transfers to and from 8"
drives, for example), sharing drives on the other computer on a R/O basis,
redirecting output to use the other computer's printer or plotter, sending
one-line messages to the other computer, and the ability to send screen
messages and data mesaages to the other computer and to receive data
messages from the remote computer (simultaneous read and/or update a
database using added BDOS calls). Sharing was on a drive basis only. It
took up about 7-8k memory and worked with CP/M 2.2, ZRDOS or equivalent.
Has anyone had any experience with this gem? Or even remember it? Were
there others like it? By '87 I had become enmeshed in the IBM-Microsoft
world, and don't remember this one at all!
Bob Stek
Saver of Lost Sols
I'm looking for the following Compute! disks for the Atari:
Compute!'s Atari ST Disk
December 1987 Volume 2 No. 6 Issue 8
Compute!'s Atari ST Disk
February 1988 Volume 3 No. 1 Issue 9
All I'm really interested in is the contents, so I'd be quite happy with
a copy. An .ST or .MSA file via email would be perfect.
If anybody could help me out I'd appreciate it.
Thanks,
Tom
Applefritter
www.applefritter.com
On March 23, Gooijen H wrote:
> If Sellam (or anybody else) has some 2,4 Gbyte space available
> I am willing to make a copy of the 5 CD's, and share the data
> with everybody on this fine list.
I have LARGE amounts of disk space available, and decent bandwidth
(2.3mbps, soon to be 5mbps hopefully)...I'd love to host this stuff.
-Dave McGuire
From: Clint Wolff (VAX collector) <vaxman(a)qwest.net>
>I've written one for DOS that needs some tweaking still... I'll cut
>loose the source code if someone wants to fix it up. Basically, it
>sometimes gets out of sync and you have to power down the 750 and
>restart the PC to get it back working...
You need to acknowledge that INIT from the host (750 or pdp11)
can force the tu-58 back to initial status. on the real tu58 thats a
break char and the resulting Framing Error from the Uart causes
a TRAP interrupt (higest priority nonmaskable interrupt) on the 8085.
A PC would have to sense a Framing Error (Character with no stop bit
for at lest two character times) and force the code back to the
starting point where RSP is restarted.
I have prints and manuals plus some of the designers notes from by days
as a Digit. Back when they were easy to find and a cheap way to put
512k of block oriented storage on a serial port of PDP-11 systems.
I also have a few that used a parallel IO (used only for PDT11/130) that
are otherwise identical.
>THANKS Allison! I bought two from Keyways, Inc. for $40 + shipping...
>For that price, I could have bought 20' of Tygon tubing... Live and
>learn...
For 40$ that should have been 80ft of tygon and at roughly .300 inches
of it per roller that would be enough for a couple of Sagans of them.
<one Sagan = billions and billions)
I had it handy and it works *ok*. It's weakness is that it dents if the
cart
is left in place for long periods. It recovers if shape if the cart is
removed
but a more resilient material might be better. I used tygon as I had it
at hand. A rubber hose material with the right dimensions would be a
good choice. Also the dimater for the TU58 roller is non critical save
for it works best if round. ;) The actual tape speed is controlled
by the cpu and a PLL circuit and has a +-10% or more tolerence of
roller diameter before there may be a tape speed problem at the ends
of the tape.
Allison
As of today, I'm the happy owner of an Atari Portfolio. Pretty neat
little machine, with even a longer battery life than my Tandy 102. Due to
it's small size, not as nice a keyboard though. Does anyone know where I
can get additional 64k or 128k memory cards for it? It came with the
parallel interface. Also, I've been told that the Portfolio is what was
used by John Conner in 'Terminator 2' when he broke into the ATM and the
Cyberdine vault...is this true?
Jeff
This is the first lost where my two favurite computers are discussed...
I have several pascal Microengines (in dual processor z80/p100 form on
s100) still running today, plus a range of Sage 4;'s running 8 different
operating systems (several all at once)
marc Wigan
Australia
On Mon, 12 Mar 2001 15:45:02 -0800 Mike Ford <mikeford(a)socal.rr.com>
writes:
> AUI to 10bt adapters are still handy as many early devices had AUI
> and coax, and AUI to coax are handy as many newer devices are AUI and
> 10bt.
Not to mention the fact that *really* early devices (multibus ethernet
adapters come to mind, along with DEQNA's, and other stuff) that are
AUI *only*.
I've waited a *long* time for prices on AUI<->10bT tranceivers to fall
to reasonable levels so I could easily hook up such beasts.
Jeff
________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today! For your FREE software, visit:
http://dl.www.juno.com/get/tagj.
We seem to have a bunch of Unix-types on here so I thought I'd pose a
question. Today, I came across the following 5 HD disks from Berkeley
Software Design Inc:
- BSD/OS 1.1 Boot Disk 1, /boot and /bsd
- BSD/OS 1.1 Boot Disk 2, Installation Utilities
- BSD/OS 1.1 Kerberos, Kerberos Utilities
- BSD/OS 1.1 Encryption, Encryption Utilities & Src
- BSD/OS 1.1 EZ-Config, Configuration Tools
What's missing from this set that would keep it from installing? Is
there anything particularly interesting about it other than it appears to be
the ancestor of the current Net/FreeBSD?
Jeff
In a message dated Fri, 23 Mar 2001 6:28:16 PM Eastern Standard Time, "Jeffrey S. Sharp" <jss(a)ou.edu> writes:
<< > Even assuming some bad units, this works out on the order of
> $35/NeXTStation, near complete.
For that price (maybe a little more if need be), I would be glad to take
one.
--
Jeffrey S. Sharp
jss(a)ou.edu
>>
I would be interested at that price as well - for a complete unit.. It's gotta have the cables though cause I can't seem to find them anywhere and they're useless without them. Also, I would be willing to help with pick-up if need be as I am only 1 hr away from philly. Just let me know.
-Linc Fessenden
From: Compusync <hsappleton(a)sprintmail.com>
>I humbly appreciate the response. For a novice(in a very conservative
sense
>of the word) user like myself, it will ultimately draw a couple other
>have no experience in VAX/DEC or UNIX for that matter. I want to take
care
Is VMS install or Ultrix (possible NETBSD?)??
>1)can you help me identify the console port and/or second
>serial port
Look at back pannel, the symbols in the plastic should help.
If it's a vaxserver there will be three 6pin connectors like a telephone
plug only with an offset loging clip. While the connector is odd those
ports are RS423 (very similar to RS232). The VT340 has matching
connectors (2) and also the standard 25pin serial connector.
The 25pin connector on the vaxserver is also RS232 but not console.
It is a full handshaking serial port suitable for a modem.
>2)Don't I need some kind of cable and what type
For the serial its just called MMJ or deconnect. There is only one type
and varies only in length (no null modem or other odd wired versions).
>3)what is MMJ ports and port 0 also has an RS232 output
VT340 terminal on the back.
>My VaxServer is has the following ports: SCSI,
Standard SCSI-II useable with many types of drives, tapes and some
CDroms.
>a 25-pin db
Modem use usually works up to 19.2k maybe 38kb.
> 3 rj-11 type
Those are acutally MMJ (modified modular jack/plug). Three identical
serial ports save for one #3 if memory serves is the default console.
>with left and right arrow; 2 Ethernet connector-one BNC and the other
AUI;
Exactly and inbetween a push swich to select one or the other.
>50-pin port; aport that looks like a printer port with a left and right
>arrow.
Used with the right cable/connector it's 8 more serial ports.
>My VT340 has the following ports: 2 RJ-11 type with left and right
arrows; a
>printer port; a keyboard port; a 25-pin dB port; and a 8-pin mini din
port
Ignore the 8pin mini-DIN as thats for optional mouse. The two RJ11 as
you call
them are the MMJ serial ports and port 0 is shared with the DB25. Which
port
is in use is selected by F4 (session select) and also the on screen
configuration.
NOTE: VT340 is a very nice DUAL session terminal. It allows two
connection
running at the same time independently or two sessions over one wire
(under
VMS or terminal server).
I only have three VAXserver3100s (M10E versions) in the VAX herd (9 in
all).
I also have an assortment of terminals including a few VT320s, VT340,
VT1200, VT125 and H19 (I built as a kit in 1978).
Allison
All,
apologies if this is redundant, I'm behind on reading and in digest
mode anyway. This appeared today on comp.sys.next.marketplace.
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
Path:
sn-us!sn-xit-01!supernews.com!feeder.qis.net!feed2.news.rcn.net!rcn!news.voicenet.com!nntp.upenn.edu!mail1.sas.upenn.edu!nospam
From: nospam(a)mail1.sas.upenn.edu (David Anstine)
Newsgroups: comp.sys.next.marketplace
Subject: NeXT Clearing House
Date: 23 Mar 2001 17:02:05 GMT
Organization: University of Pennsylvania
Lines: 38
Message-ID: <99fvid$ke2$1(a)netnews.upenn.edu>
I have the following NeXT equipment in my basement that needs to go. I'm
looking to move the whole lot and will take $1,000, or best offer.
If you are not serious, please do not jerk me around. I've already had
three parties back out at the last second. One more time and this stuff
goes in the dumpster.
40 NeXTstations (approximately 1/2 are turbos)
34 NeXT Monochrome monitors
2 Cubes (one is missing the back cover)
3 NeXT Laser printers (Only one is confirmed to be working)
38 NeXT keyboards
30 NeXT Mice
1 NeXT Color printer
1 NeXT cdrom drive
1 Digital Eye
Note that I can't vouch for the condition or existence of hard drives in
all of these machines. Also I, recently tested the monitors for screen
brightness; approximately 20 were ok, 8 were slightly dim, 2 were
definitely dim, and 4 had some weird distortion problems.
I also have:
Lots of software (FrameMaker, WordPerfect, Lotus, DataPhile, you name it,
I probably have it)
Lots of other junk (NextWorld Magazines, NeXT manuals, NeXT coffee cup,
NeXT stickers, etc..)
Note: I will not ship any items. This is simply too much stuff to deal
with (boxing, UPS, etc..). If you want it, you have to pick it up. I am
located in Philadelphia, PA.
-dave
email me at my last name at sas dot upenn dot edu
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Anybody near Philadelphia, please respond. I'll be off-line during the
weekend, but if you are interested email me and maybe we can put together a
group buy. Even assuming some bad units, this works out on the order of
$35/NeXTStation, near complete. Questions for the seller, if you contact him
directly to save time (and please feel free to do so) would include whether
he's got the mono monitor cables available.
- Mark
DEC has stated publically that any publication they no longer publish may
be republished by a third party as long as it is not for profit.
--Chuck
At 02:15 PM 3/23/01 +0100, you wrote:
>3. How about legal issues ?????
Peter Turnbull wrote:
>It sounds like you've shorted the cable. Do those transceivers have a set
>of LEDs on them? I suspect not, but that might tell you if anything is >being
transmitted/received.
The InterGraph transceivers have three LEDs labeled PWR, SQE and COL while
the NV1000 only has one located next to the AUI connector. It's been quite
some time since the error happened and I've forgotten how they behaved, but I'll
re-try and watch 'em this weekend.
>You could try removing one terminator and testing the DC resistance
>between core and shield of the coax; it should be 50 ohms with nothing >powered up.
If you have shorted it...
OK, I tested with my DMM and there was a reading of 51,4 Ohms on it - I
guess that's inside the tolerance and not to be called a short...
Tony Duell wrote:
>>we've put another transceiver on the cable strictly according to the
>>installation guide that came with it (drilling hole into cable with
>>recommended tool etc...).
>>Since we've done that, it's no longer possible to print from one of the
>>SUNs to the CalComp although the PC is not yet connected to the
>>transceiver.
>THis may be something that has been mangled by the translation into
>English, but I want to get it right : Can you print from one of the Suns
>and not from the other, Or Can neither Sun print?
Yes, it was a bit of a strange translation (my fault...) but the meaning is
the following: One SUN only can't print while the other one cannot be tested
as it doesn't boot up due to internal data loss in the battery buffered RAM.
>...I would suspect either damage to one of the transceivers (was the
network powered up when you drilled the cable?...
No, we had powered down everything and even disconnected the drop cables
>from all units on the network before drilling the tap hole.
>...or maybe a reflection from the 'stub' caused by the new transceiver (did
you follow all the rules about unequal spacing of the transceivers, etc?
There are several black marks on the yellow cable and when we got it, we
were told if we ever were going to add another transceiver, we should put it
next to one of those marks. And so we did. But as there seem to be rather
complicated rules for working out this, I'd like to know them in order to check if
the markings on the cable show the correct places.
Thank you all for your suggestions on finding the problem.
--
GMX - Die Kommunikationsplattform im Internet.
http://www.gmx.de
Hi all!
> .....
I am not in the habit of actively reply to this group, although
I read ClassicCmp *every* day.
I work at Oc?, and even did the software of the scanner drive
and part of the Image Logic of the Oc? 3165. I also know of
ScanLogic and (of course) have access to all the goodies.
The scanner actually processes about 54 pages A4 / minute.
I copied almost all the Field Maintenance Print Set doc that I
have. To name a few: RL11, 11/40, RL02, RX02, TE16, TS03, TMB11.
And many more.
The problem is that I can not make it all available for the
following reasons:
1. it is scanned at 600 dpi (!) --> *BIG* files (see my website)
When you print it on A3 (ledger), the copy is sometimes even
better than the original, because Image Logic enhances thin
lines. Coffee spots are less visible.
2. Because it is so many, it fills more than 4 CD-ROMs.
3. How about legal issues ?????
If Sellam (or anybody else) has some 2,4 Gbyte space available
I am willing to make a copy of the 5 CD's, and share the data
with everybody on this fine list.
When the problems (making it available) are all solved, I am
willing to continue scanning. I can scan all manuals (A4, letter)
and quick ref cards just as easy.
I can post a complete list (with file size!) if you like.
When you send me doc, I will scan that too, but I am not going
to pay for the return postage, if you want the doc back....
Kind regards,
Henk Gooijen,
PDP-11 collector
Sneak-peek of retro-computing: http://home.12move.nl/~sh416008
(by far not up-to-date, heavily under construction)
What we need is a central repository for classic computers:) About 15 miles
down the road from where I live, near Kansas City, the National Archives has
a big underground spot for all sorts of records. Part of the Smithsonian
Archives is there. Space is cheap.
A piece of trivia, I once heard that all of the population of Kansas City
could be housed underground in case of Nuclear War. The entire area is
underlain by limestone quarries. There are spots where they run trains full
of frozen vegetables in and unload them. They can have a power failure and
the temperature only goes up about 3 degrees in a month. Although they had
a fire and it took several months to choke it off and they ended up pumping
in liquid CO2 to smother the fire.
The local newspaper, Kansas City Star, sent all of their reporter's
notebooks and unpublished photos to a one of the "caves". Lots of valuable
information especially about President Truman who's from the area. The
newspapers and paper have to be acid neutralized or you end up with powder.
Actually logistics and conservation is always a problem. You actually need
an ongoing process to reexamine and prevent rust, vermin, and oxidation.
You can't just store it you must actively maintain it.
I'm sure I'm "Preaching to the choir".
Mike
mmcfadden(a)cmh.edu
As previously mentioned these are probably MS01-CA for DECstation
3100 or DECstation 5000/1xx or Personal DECstation 5000/xx.
Note that MS01-AA (a pair of 2Mb SIMMs) and MS01-CA (a pair of
8Mb SIMMs) cannot be mixed - well they can but then the 8Mb SIMMs
pretend to be 2Mb SIMMs, i.e. 2Mb+2Mb + 8Mb+8Mb => 8Mb.
Doug.
PS - Anybody got any to sell - I'm looking for 3 MS01-CA, i.e.
6 x 8Mb SIMMs for a total of 48Mb.
I have been given a Model 5363 and would like to try to get it
operational. Does anyone have any suggestions on where I might find
documentation? Even an operators manual would help.
Thanks
Charlie Fox
Chas E. Fox Video Productions
793 Argyle Rd. Windsor ON N8Y 3J8
foxvideo(a)wincom.net
Check out:
Camcorder Kindergarten at http://chasfoxvideo.com
>Keeping track of the finances would be tricky. Someone will have to manage
>the money, and they will be met with varying amounts of distrust by those
>who would donate. Maybe a good thing would be to either form a nonprofit or
>get one to assimilate us.
>And it would need a cool name. :-)
>Thoughts?
Not only keeping track of the finances, but what about actual ownership?
I like the club idea but I can just see someone down the road trying to sue
the club for ownership of a particular piece in the case of a dispute. No
doubt there are a lot of legal aspects that would have to be worked out to
protect everyone involved. Then there's the logistics if the club does have
a single repository for storage of the equipment.
I'd certainly be interested in being part of it though. All of us
together could certainly make a bigger impact than singularly.
Jeff
On Mar 22, 18:11, Edwin P. Groot wrote:
> 60 pages per minute scanner, double-sided? Holy Crap that's fast!
Do
> not wear a loose necktie when working on that machine! I don't know many
> high-end photocopiers that would go that fast.
Our two Oce 3165's do 62 ppm double sided. See
http://dev.oce.co.uk/Copying/Products/Digital/3165/Default.htm
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Hi, I am interested in old computers especially in i286 (PC/AT)class
computers. I am looking for a multitasking OS which uses the capabilities
of this CPU like memory protection, 16MB address space, etc.
I only found Xenix/286 which take advantage of this 286 features or are
there other ones as well?
Is it still possible to find copies for this version of Xenix?
Thanks in advance
Mario Premke
At 23:36 22-03-2001 -0500, Bear wrote:
>(PSI = programmable serial interface - protocol depends on software)
>Supported in all PA-RISC machins with EISA slots. Supported OS revs appear
>to be 10.10-11.0/32
Ahhhh. Ok, that makes sense. This begs the question, does anyone need the
thing? I sure can't use it.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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)
"I'll get a life when someone demonstrates to me that it would be
superior to what I have now..." (Gym Z. Quirk, aka Taki Kogoma).
Date codes on the chips are in the 1991 range, so it fits the ten-year
rule...
Got a full-length EISA card, made by HP. Part # on board is 25565-60002.
No match whatsoever at HP or on Google.
Surface-mount chips on both sides. Motorola MC68302FE16C CPU, single
72-pin SIMM socket with a 1MB SIMM in there at the moment. Front bracket
has a single 62-pin female D-shell connector. Bracket also sports a single
amber LED at the top labeled 'Fault,' and the designation 'PSI' directly
below the D-sub.
(1): What the fsck have I got?
(2): Assuming I don't need it, would anyone else want the thing or should
I feed it to the recycle bin?
Thanks.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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)
"I'll get a life when someone demonstrates to me that it would be
superior to what I have now..." (Gym Z. Quirk, aka Taki Kogoma).
On March 21, Bill Pechter wrote:
> Too bad classicmp together couldn't bid for an entire lot.
> 11/44's, TU77's...hmmm.
That's an interesting idea. Form a club centered around the list,
maintain an online bank account, take pre-auction votes on maximum
bids for a particular lot, and have a person local to each relevant
auction go on behalf of the group.
-Dave McGuire
I've made contact with a guy who's scanned 20,046 pages of the
docs listed below, at 300 to 400 DPI. He first told me about the
UCSD p-System docs he'd scanned. Below the list is his description
of the process he followed.
I'm planning to get a copy of what he has and burn it to CD-R.
Does anyone else have an interest in these docs, or have any
ideas about distribution without massive copyright violation?
- John
6502
MOS 6502 datasheet
6502 Assembly Language Subroutines (Leventhal)
AMD
AMD 29000 Memory Design Handbook
Am29027 Arithmetic Accelerator
Am29C327 Floating Point Processor
Data General
C Language Reference Manual
GATE User's Manual
AOS/VS Internals Manual
AOS/VS Programmer's Manual, volume 1
AOS/VS System Calls Dictionary
CEO User's Manual
Eclipse 32-bit Principles of Operation
Eclipse 32-bit System Functional Characteristics
Fortran-77 Environment Manual
Fortran-77 Reference Manual
Fairchild
Clipper User's Manual
IDT
RISC System Programmer's Guide
R3000 Assembly Language Programmer's Guide
R3000 Hardware User Manuals
R3000 Language Programmer's Guide
High-speed CMOS databook
Motorola
68000 Family Reference
68020 User's Manual
68851 User's Manual
88100 User's Manual
88200 User's Manual
Linear Interface Integrated Circuits
NCR
53C90A/B Advanced SCSI Controller (2 different manuals)
53C94/5/6 databook
53CF94/96-2 Fast SCSI Controller
Disk Array Controller Firmware
Disk Array Controller Hardware
Disk Array Controller Software
Floppy Disk Controller (SCSI-to-FD)
National Semiconductor
NS32532 Datasheet
Series 32000 Programmer's Reference Manual
DP8490 Enhanced Asynchronous SCSI Interface
NS32CG16 Programmer's Reference Supplement
Graphics Handbook
Series 32000 Databook
DRAM Management databook
Embedded Controller Databook
Ohio Scientific
C4P User's Manual (2 different manuals)
65V Programmer's manual
Schematics for:
502 CPU board
505 CPU board
527 24K memory board
540 Video board
542 Polled Keyboard
Pinnacle Systems
2 User's manuals for their 68k machine (My P-system machine)
P-system manuals IV.12
Operating System Reference
Program Development Reference
Application Development Guide
Fortran 77 Reference
Assembler Reference
Weitek
WTL4167 Floating-Point Coprocessor datasheet
Most of these are from about 1988 to 1992, with the exception of the OSI
documentation, of course, which is from 1979.
---
> What sort of process did you follow? What sort of devices?
As far as the process, I scanned a manual in and checked to make sure
all the pages were there. If they weren't, I'd scan the pages that
didn't make it, and go through all the pages again. I'll admit this is a
little anal, but better safe than sorry. (When you're using a lot of
shell scripts, you never know if you accidently deleted a page with an
"mv" command.) When all the pages where there, I'd go through the manual
one more time to check for general quality (no folded corners, no torn
pages, etc.) If all was good, the manual would be moved to the directory
that would be the root directory of my CD-ROM. That's pretty much it.
The big manuals of more than 1000 pages really sucked, because I'd
generally have to make 3 or more passes to get those completely correct.
If I was going to do it again, I'd probably break the larger manuals
into smaller chunks to avoid this problem.
One thing that made the whole process a lot easier was the netpbm
utilities. I wrote a script to convert the manuals from ~2500x3300 TIFs
to ~500x600 GIFs. My machine takes about 2 seconds to process a 300-400
DPI TIF, but only a fraction of a second for a 75 DPI GIF. I'd run my
script, then do something else for a while. When it was done, I could
flip through the GIFs with GQview and inspect about 2-4 pages per
second. That saved a lot of time.
I assume that, by "devices", you mean what type of scanners I used. I
started with an HP 6350cse (with ADF) that I bought for this very
purpose. However, having never owned a scanner before, I was a little
disappointed with how slow the "fast" scanners are. Fortunately, imaging
is an integral part of the software my company sells and, as luck would
have it, we were demoing a new scanner from Fujitsu. This thing
literally does 60 pages/min at 300 dpi - *both* sides. It's about half
that fast at 400 dpi, which I had to use for the IC databooks to get the
fine print. Needless to say, I did most of my scanning on that.
By the way, to date, I've processed 20046 pages. I'm kinda burned out,
though, so it'll be a while before I do any more.
On Mar 21, 18:48, Tony Duell wrote:
> > You can get
> > N-to-BNC adaptors and BNC terminators for pennies.
>
> Can you? Where? The last N-BNC adaptors I bought were several pounds
> each... And the cheapest (decent) BNC 50 ohm terminators I have found are
> home-made (solder-type BNC plug + 51 Ohm resistor).
I thought I'd seen them (N-BNC) in the CPC catalogue, but when I looked
just now, I found N-to-anything_but_BNC for around ?1.50. Maybe I was
thinking of Farnell (who ain't so cheap). Cirkit sell them for ?2.69.
Ouch! I've just found the price in the Electrospeed catalogue (?8). I
got most of mine from older network installations, where people had added
thinnet to (or in some places, instead of) original thick yellow ether.
Older N-series tranceivers often got reused in such situations, I find.
Electrospeed still claim to sell coax taps for ?22, and assorted
transceiver adaptors (N-series ?15, straight single BNC ?12, dual (T) BNC
?14).
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Bill and everybody else,
I'm pleased with that dongle thing, I used it to transfer the stuff
first with a HVF explorer to place the files in HFS image disk w/
raw data fork selected. Then moved stuff between pc emulating a Mac
(basilisk II, freeware) to real Mac. Far easier than all those disks
sneakernet and I didn't have correct scsi cable for my PCI controller
(HD connector to centronics needed). Nearly 60 MB moved at snail's
pace due to emulation but does work as it should be which is fine
with me. :-)
All this stuff is freeware or demoware, just the same it earned their
worth for me.
Treashing around story:
Took me hours searching because the pc-mac sharing or conversion
utilities via network (examples: DAVE, MacPclan are over $120 US or
more which will break my limited canadian budget and very leery
about asking so much of my personal details before obtaining demo
programs. When I saw a webpage suggesting Basilisk II, I pounced on
it like a cat. Then more hours on basilisk II/sharing figuring out
and RTFM'ing lot of stuff to get everything to work but I succeeded!
Tip: Somewhere in that netscape/IE on peecee is screwing the pooch
on hqx, before clicking that ok button to download, change .hqx for
.txt. When d/l done, rename it back. That works. I still don't
figure out why HVF explorer doesn't work on mac formatted disks but
basilisk II will read/write these 1.44 disks, remember peecees can't
deal with 400K/800K due to FD controller issues. That is what real
Mac I moving stuff to is for.
Amazing how small that Basilisk II is and fairly stable, nothing left
out to make mac emulation to work and 100% lookalike. Funny, that
ran like scalded rabbit on duron 800. It stutters sometimes because
both HFS images were on old 540MB hd, other than that, it crackles.
Bill, Thanks for that dongle!!
Wizard with big smile.
FYI: Basilisk II is ported to linux, Amiga, win9x/NT/2000 and one
other I forgot. Only supports 512K or 1MB Mac roms, everything you
need are bundled in one download except for HVF explorer. Download
that 11MB PDF basilisk II manual is a must as it has new info in it,
far more info than what I have seen on webpages. This file does
contains vital info that is required to get started and installing
OS, plus at least one extension has to be OFF.
Does anyone have handy the switch settings for DEC PDP-11/44
memory boards? I have a collection of third-party boards
(nat. semi and standard memories) but no documentation on
them.
I suspect they use the same dip settings as DEC MS11-xx (M8743)
boards (of which I also have a few but no docos).
I'm also looking for DZ11 (M7819) IRQ/CSR switch settings.
Thanks!
greg
Gregory Travis
Cornerstone Information Systems ATS
greg(a)ciswired.com
812 330 4361 ext. 18
On Mar 21, 21:22, Tony Duell wrote:
> >
> > On Mar 21, 10:07, MTPro(a)aol.com wrote:
> >
> > > << First, put a 50-ohm terminator on that connector, so the NeXT
thinks
> > it is connected to a live (but very small!) network. >>
> > >
> > > Is this something I can pick up at say Radio Shack? Does it looks
kind of
> > like a little metal cap that fits on the coaxial connector?
>
> Wait a second. Standard ethernet has a 50 Ohm terminator at each end of
> the cable. so the DC resistance between the core and the shield is 25
ohms.
Yes, but the standard method of terminating a single (isolated) point is to
use ONE terminator (maybe not for Vaxstations :-)).
> According to all the notes I have on how ethernet transceivers really
> work, the transmitter is a current source, which develops a voltage
> across this impedance. The receiver is a voltage sensor. If 2
> transmitters send at the same time you get a greater-than-normal voltage
> on the cable, which is what is detected as a collision.
> But of course, _1_ transmitter will develop twice the voltage across 50
> ohms as across 25 ohms. Which means having 1 terminator on the network
> (however short -- even just on the network connector) will generate
> 'collisions' all the time
I've not looked that closely at the internal circuitry of a transceiver,
but I can assure you that that's NOT what happens with any transceiver I've
tried. Having no terminator at all does indeed make many transceivers
believe there are constant collisions, but I've always found one to be
enough to prevent that, providing it's directly on the transceiver. The
official method for SGIs is to put a microtransceiver with a single
terminator on the AUI connector.
> You should use a non-inductive resistor here. Some cheap ready-made
> terminators are anything but...
Yes, and it should also be around 1/2 - 1 watt. Many terminators use 1/4
watt and get away with it, but the nominal voltage is 10V (and hence from
P=V^2/R, and allowing a 50% duty cycle, you want 1W).
> > types: those with a characteristic impedance of 50 ohms, used for test
> > equipment, thin Ethernet, etc; and those with a characteristic
impedance of
> > 75 ohms, mostly used for TV and video signals).
>
> IIRC, the central pin is of slightly different diameters (IIRC the 75 ohm
> one is thinner). If you put the thin-pinned type of plug onto the other
> type of socket, it won't always make good contact. If you do the reverse
> you can damage the socket contact.
>
> And of course putting mixed connectors together will cause a (small)
> mismatch which can be a bad thing.
Yes, they are different, and I *think* that's the right way round :-)
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
Heck... If it weren't for all these HP minis, I'd have no furniture at all.
Steve
>From: Bob Brown <bbrown(a)harper.cc.il.us>
>Reply-To: classiccmp(a)classiccmp.org
>To: classiccmp(a)classiccmp.org
>Subject: Re: Lovely period furniture: VAX 4000-500
>Date: Thu, 22 Mar 2001 08:41:00 -0600
>
>My TV sits on an old IBM 3274 control unit.
>
>Makes a wonderful TV stand!
>
>-Bob
>
>
>>Don't rule out the VAX 11/725. A nice end table with a little more
>>room on top.
>>Remove the RC25 and you have a nice storage area for your snacks....
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
I'm pretty much full here too...but there are some surplus
facilities nearby that aren't really open to the public, but that I
have access to. Lots of larger DEC stuff (a lot of VAX6000s) shows up
there.
Maybe we should set up such a thing. There would be a number of
things to arrange to keep things running smoothly, but I think it
could be done.
-Dave McGuire
On March 21, Brian Roth wrote:
> Dave,
>
> That could work for the salvage yards as well. I have a nice digital
> camera to take shots of this stuff here locally. The only problem is
> that the stuff gets recycled pretty darn quick. I try to save what I can
> but until I get my new building put up, I'm bursting at the seams.
>
> Brian.
>
> Dave McGuire wrote:
>
> > On March 21, Bill Pechter wrote:
> > > Too bad classicmp together couldn't bid for an entire lot.
> > > 11/44's, TU77's...hmmm.
> >
> > That's an interesting idea. Form a club centered around the list,
> > maintain an online bank account, take pre-auction votes on maximum
> > bids for a particular lot, and have a person local to each relevant
> > auction go on behalf of the group.
> >
> > -Dave McGuire
> Date: Sun, 18 Mar 2001 23:45:19 -0500 (EST)
> From: "R. D. Davis" <rdd(a)smart.net>
> Subject: Sun VME bus boards (was: This is CLASSIC COMPUTERS)
> Sorry... I've been hacking some database stuff and Perl all weekend
> and I guess it obfuscated my mind a little.
>
> Speaking of classic computers, is anyone here interested in purchasing
> some Sun VME-bus boards? I've got a bunch of them that I'm trying to
> sell for someone, and I'd like to free up some of the space that
> they're taking up... lots of CG3 boards, various CPUs, etc. While I'd
> like to just give these away, I agreed to pay $x dollars apiece for
> each one sold or transferred to someone else, so I'd like to at least
> cut my loss (as I'll be taking a loss). The agreement that I made also
> means that I need to find good homes for them, so I'll only sell them
> to those who are truly intereted in using them.
I'd certainly be interested in a couple of VME cg3s :) Have you had chance to make a list of what
other boards you have?
Have you posted/are you going to post this over to sunrescue? (rescue(a)sunhelp.org) you'll get a
lot more takers from them :)
> But wait, that's not all, I'll provide a chance for a FREE *BONUS* to
> all who purchase these; that's right, I'm giving away something for
> absolutely nothing! Free arachnids! Disclaimer: Quantity of
> arachnids per board may vary; some boards may contain no arachnids;
> purchasers responsible for all consequences. ;-)
>
I take it the arachnids have taken up residence?
Dave.
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