Well this week has been a good one in that I picked up a very large number of manuals for all types of hardware and software from Kim-1's to early Packard Bells. I got over 20 - 2600 cartridges plus 10 for the Vectrex. I also added over 15 new mousepads to the collection. I got a NEC StarLet portable computer model PC-8401A that needs work. An HP Integral PC with a HP 82916A 1mb memory module, a HP 82919A option 001 Serial interface module, HP Rom Module UX/RO Rel 5.0 unit turns on both nothing on the screen. I picked up a Tektronic type 576 Curve Tracer that needs work. I also got a Commodore 1351 mouse and an Amiga mouse at the same thrift. I go 3 notebooks that are not 10 years old yet but they were free (1-286 & 2-386's). I also got for free a Sears TV/Monitor from June 1984 that still works. All in all the week was very good for saving items and building more for the museum.
Hello, I have a Zenith Data Systems Z - Star 433 VL, which needs the
AC-375-A power supply. It's a 22 VDC, 1.27 amp unit, and has a very unusual
power plug ... 4 holes in the center and 4 slots around the perimeter ... the
computer is a
TYPE NTB 003,
M/N: ZPD-4834-KF, serial # 4MSBLK000406
Does anyone know about this computer? Is it capable of running win 95? If
anyone has a power supply or battery for sale I would like to buy it/them,
should either of the laptops work I would use them for word processing away
>from the main unit.
Ray Cook
SeaMasterZ(a)AOL.COM
...or two?
Trying (yet again, or is that still?) to make some room on the 'Garage'
for winter projects, and came across a couple of potentially interesting
things which could use a home...
Two PDP-11/34 operator panels. These are NOT the panels with the numeric
displays and keypad. These panels have three LED status indicators, two
switches (boot/init & run/halt), and a power selection dial.
I don't recall where/when I picked them up, and my '34 has it's panel,
so...
If you have a machine that needs a panel, you can have one for the cost of
shipping. (unless you feel real guilty and want to throw in something for
trade)
If you just want to hang it on the wall, it'll cost you $25.00/ea or an
interesting (and useful) trade.
-jim
---
jimw(a)computergarage.org || jimw(a)agora.rdrop.com
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
>> It's a TTL device, not serial.
>The one does not preclude the other :-)
>The Apple mouse is TTL, and it's not serial (it's quadrature outputs as
>you said)
>A PC 'serial mouse' is serial (of course) and it's not TTL, it works at
>(approximately) RS232 levels
For some of us (including me!), our first brush with "serial" was 60mA current
loop data, a standard that I see you've ignored :-)
With some of the loop supplies being able to go up
to 50, 75, or even 100V in "open circuit" configuration, I'd *hate* to
see what would happen to TTL connected directly!
(I have to admit that I got started late enough that optoisolators were
the preferred way to go from current loop to other signaling levels... but
I do remember polar relays.)
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
On Dec 12, 10:41, Ethan Dicks wrote:
> I didn't know that the PERQ used a sync-serial mouse at TTL levels, but
> are you sure about the PS/2 mice? After all, there is an adapter you can
> stick on mice to adapt them from 9-pin serial to PS/2 connector, and it's
> only wires, no active components.
Those which are completely passive only work on certain dual-function mice,
in which the PIC can detect the change -- by detecting the voltage on a
different pin -- and act accordingly, changing the protocol. In general,
you can't turn any old serial mouse into a PS/2 mouse, nor vice-versa.
To further confuse, there are at least two pinouts for such adapters.
However, there are some active adapters, which themselves contain a
processor (usually a PIC) which will convert the serial protocol into PS/2
protocol.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
> > It's a TTL device, not serial.
>
> The one does not preclude the other :-)
Fair enough. I wasn't specific. I only meant that it used +5/gnd
as opposed to +/-12 (EIA levels).
> A PERQ 'Kriz mouse' is TTL (all signals are at TTL levels) and it is
> serial (synchronous clock/data) interface. A PS/2 mouse is also TTL and
> serial (but a different flavour of serial).
I didn't know that the PERQ used a sync-serial mouse at TTL levels, but
are you sure about the PS/2 mice? After all, there is an adapter you can
stick on mice to adapt them from 9-pin serial to PS/2 connector, and it's
only wires, no active components.
To continue flogging this dead horse, VAXstation mice are serial but
not strictly RS-232 serial (RS-423?) and Sun mice are yet another form
of serial mouse.
-ethan
=====
Infinet has been sold. The domain is going away in February.
Please send all replies to
erd(a)iname.com
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It's likely they're monochrome (not to suggest IBM-PC-compatible monochrome)
in some high-resolution format if they have only one BNC input.
Dick
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Sunday, December 12, 1999 10:28 AM
Subject: Re: Hewlett Packard A2094 Monitor (Standard RGB ?)
>> Also there was several HP 20 inch mono monitors ready to be tossed in the
>> dumpster, I thought these were Composite video inout because they had one
>> BNC connector on them, but likely some sort of fixed Frequency input..
>
>They _are_ composite video (meaning that they take one signal which
>combines the video signal, horizontal sync, and vertical sync). They are
>also fixed-frequency and they almost certainly don't work at TV rates but
>at something much higher.
>
>-tony
>
Just wanted to let folks know the results of my Saturday trip. I left Des
Moines and
drove to Kansas City, where I met Mike McFadden. Mike's an extremely pleasant,
helpful fellow who showed me where to find good surplus in KCMO. I'll
DEFINITELY
be visiting KC more often!
I went there to pick up the VT220s he advertised on ClassicCmp.
I walked away from one surplus place, having spent only $10, and got
(1) M7606 MicroVaxII CPU board (spare for my MVAX II)
(1) Cisco IGS Multiprotocol Router/Bridge
and a couple miscellaneous bits and pieces. Not bad for $10.
Then I drove to Lincoln, NE and visited Bill Richman, who recently posted some
items for auction. Another really nice guy. Picked up the Tek 532 and the
aluminum
cart it sits in. I also picked up some other spiffy items, which I'll
describe later.
So, the entire trip (including gas) cost me $90 (less than the cost to ship
the items),
got me out on the road for a few hours of relaxing driving and allowed me
to bring home
some unusual items that are scarce or non-existent in Des Moines.
Anthony Clifton
Be careful, now! Don't agree to sell the monitor "cheap" if that means
throwing good money after bad. My experience with persons wishing to buy
something "cheap" means it is supposed to cost them less than it costs you.
Here you're asked to risk paying $160 for a $50 video card with what
apparently amounts to a customized EPROM. I'd not buy one of these unless
you can, at a minimum, (a) return the card if it doesn't work as you expect,
(2) ship the monitor to someone elese who wants it with advance payment in
the amount of your purchase PLUS the cost of freight, which will be MUCH
more than you pay the monitor. The packing task will be enough of a pain
that no one should complain about paying these costs.
My experience has been that collectors of old hardware won't pay these
actual costs routinely, though they might if the item in question is
relevant to a specific project in progress. Good luck!
Dick
-----Original Message-----
From: Mike Ford <mikeford(a)socal.rr.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Sunday, December 12, 1999 1:55 AM
Subject: Re: Hewlett Packard A2094 Monitor (Standard RGB ?)
>>4. According to specs this monitor will support 3D graphics directly with
>>the right video card.
>>5. According to Specs it supports an impressive 1158 X 870 resolution.
>>6. Seems like I get a good working 19 monitor for only $160.00
>>
>>Negative Points:
>>1. Its 6 years old.
>>2. Don;t know how many hours are on it.
>>3. History is unknown..
>>4. The Sucker is Big and weighs a ton..
>>
>>So Should I do this or Not ?
>
>Absolutely, if it doesn't work out sell it cheap to one of us. Item 4
>though is nuts, the monitor has NOTHING to do with 3D. The only 3D monitors
>I know are by NEC. ;)
>
>Negative 4 is very true, and these old monitors suck juice (AC juice) and
>make heat.
>
>Look for some reviews of the SaturnGL before you jump in
>
>
--- ndiablo(a)diablonet.net wrote:
> Yep, the mice that were used in the Apple IIe/IIc (others as well?) was
> exactly the same as that used in the Mac 128/512/Plus, and Lisa (which
> I believe was actually just a serial mouse? i might be wrong).
The original Apple mouse passes raw quadrature data to the interface, just
like an Amiga mouse or a MS Bus Mouse.
It's a TTL device, not serial.
-ethan
=====
Infinet has been sold. The domain is going away in February.
Please send all replies to
erd(a)iname.com
__________________________________________________
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