From: "Lawrence Walker" <lwalker(a)mail.interlog.com>
Subject: Re: TRS-80 Questions
On 24 Feb 98 at 21:27, Tony Duell wrote:
>> > 2. Included with a TRS CoCo 1 I picked up last summer was
>> > an adapter plugged into the cass.port. a label "TotalCommunications"
>> > on one side and "Telelearning" on the other. Into this was plugged
>> > another M/M adapter labelled " RS232 Gender Changer" Was this for
>> > hooking up a fdd and/or modem ?
>>
>> My guess, and it's only a guess is that this is some kind of kludge to
>> allow you to CLOAD (and maybe CSAVE) programs to/from an RS232 device. It
>> may have been part of one of those classroom 'networks' where the teacher
>> loaded a program onto his machine, all the pupils typed CLOAD, the
>> teacher typed CSAVE and the program was downloaded onto all the pupils'
>> machines.
>>
> Now that seems like it has possibilities . And it takes up so
>little room !
It is more than likely a modem or parts to one. On the Commodore 64
the Total Telecommunications Modems are very well known (because they
were VERY cheap and good quality Commodore 1650 clone direct-connect
auto-answer 300 baud modem) I ran my BBS on one for years..
My assumtion is that the Telelearning project (which, from my book,
looks like a Compuserve, Q-Link or similar on-line network geared for
education) failed miserably and all the modem/software packs were sold
at pennies to the dollar.
I thought there were just Total Telecomm modems out there.... I
wonder what other computers that made modems for.
Larry Anderson
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Visit our web page at: http://www.goldrush.com/~foxnhare/
Call our Commodore 64 BBS (Silicon Realms 300-2400 baud) at: (209)
754-1363
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
>> Better question is where they FIND them, I have plenty of room and my wife
is
>> mostly understanding. Well, in the way that an antelope understands linear
>> algebra anyway.
I recently tried advertising in a national computer "for sale" magazine.
This worked very well, but I don't know if it would work so well outside
of Australia. Huge numbers of offers, some of which were really good -
but they came from all over Australia, and many were either XTs or other
boring computers, or situations where people really belived they had a
wonderful collectors items, and thus asked 3 or 4 times what I considered
their worth.
Adam.
Doug,
I used to repair tempested Zenith Inteq 248 machines in the late
1980's. As mentioned earlier, the 16 bit boards were all isolated in
the chassis and had cables run through a dead space to the external
connectors. All boards have rfi suppression coils built in and of
course there is a rfi suppression braid gasket running the entire
circumference of the main system unit, if I recall there were about
thirty-six to forty screws holding the cover on. The keyboard was
tempested as well as the color monitor, both of these being very heavy
in comparison to a untempested Z-248 system. I ran service calls out
at the Vint Hill Farms Army base (near Warrenton, Virginia) to service
these and always found it strange to have a tempested unit in a
shielded building in a bank vault. Yes they used Syquest 10MB
removeable disks. Also, whenever we had one of these units in our shop
for repair (off base), prior to it being placed back in service,
security would use an rfi sniffer prior to acceptance to ensure there
was no leakage. I found a complete Zenith Inteq 248 with tempested
color monitor and keyboard at a church sale a few years ago. I
regretfully broke the rfi qa seal on the system unit and removed the
cmos battery (AA lithium) as I was afraid it would leak and damage the
system unit as I was tucking it away (until I find space to display
it). When I broke the seal, I documented the date and reason why and
placed this note inside the system unit so as to document its history.
The system booted fine. Built like a tank.
Marty Mintzell
______________________________ Reply Separator
_________________________________
Subject: Re: Zenith Inteq
Author: classiccmp(a)u.washington.edu at internet
Date: 2/26/98 11:08 PM
Doug Yowza wrote:
> On Thu, 26 Feb 1998, Mike Allison wrote:
>
> > My experience with these "TEMPEST" machines is that it's usually best to
> > swap out all the parts (great difficulty at times) and use the AT parts
> > in another box. The box is heavy and, as you stated, designed to
> > firewall the parts from the actual physical ports. There are good parts
> > on them however, disk drives, scsi connectors, video cards, mother
> > boards, memboards, that would work nice in another box and be easier
> > (read that cheaper) to mail.
"TEMPEST" standards are there to afford proper sheilding to prevent
radiations/emmisions fromt he machine when it's being used for security
information. The thicker covers, ground braids and multiple screws in the
covers make it better sealed and there should be no emmisions over 12 inches
from the machine, or none at all ideally. Other than the power supply being a
class A type, the rest is normal but may have been refitted with a shielded
faceplate.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 / Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
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From: Russ Blakeman <rhblake(a)bbtel.com>
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: Zenith Inteq
References: <Pine.LNX.3.95.980226214359.11741A-100000(a)behemoth.host4u.net>
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I'm lucky, in that I sit in a nice, big computer dungeon at work that the
bosses seem to not care about much. Either that or they can't tell the
difference between the new Digital NT boxes and the Vaxen.... ;)
At 07:26 AM 2/27/98 -0500, you wrote:
><><< Geez, where do you guys keep all these computers??? >>
>
>4bedrooms and the computer room is the smallest and also my office. That
>limits me to 150sqft or about 1000cuft inside the house. The garage
>is also huge (and resonably warm in the winter) so a fair amount it out
>there too.
>
>< Yeah, it's easier to give up the wife and kids and to keep the
><computers. A lot quieter too.
>
>Forget kids, I am the wife!
>
>Allison
>
>
<><< Geez, where do you guys keep all these computers??? >>
4bedrooms and the computer room is the smallest and also my office. That
limits me to 150sqft or about 1000cuft inside the house. The garage
is also huge (and resonably warm in the winter) so a fair amount it out
there too.
< Yeah, it's easier to give up the wife and kids and to keep the
<computers. A lot quieter too.
Forget kids, I am the wife!
Allison
Although it is very clean and included all the manuals and software, I paid
twice that for my Executive.
Cliff Gregory
cgregory(a)lrbcg.com
-----Original Message-----
From: classiccmp(a)u.washington.edu <classiccmp(a)u.washington.edu>
To: Cgregory <Cgregory>
Date: Friday, February 27, 1998 6:56 AM
Subject: Osborne Executive
>
>I have the opportunity to get one - cosmetics OK, operation dubious - for
>$60.
>Is this machine (Osborne Executive) worth picking up, or relatively common?
>Thanks
>A
>
>
In addition to the previous message today, I also have an original Tandy
1000 (no suffix) that can go a number of ways:
Main unit with 640k ram (expansion card), 2 360k floppies,
keyboard...$25 plus shipping
Main unit with 640k ram (expansion card), NO floppies, keyboard
........$18 plus shipping
Main unit with basic ram (no expansion), NO floppies,
keyboard...........$ 15 plus shipping
The shipping weight is dependant upon the way it gets sold. Buy the
complete unit ($25 plus s/h) and I'll throw in a Tandy joystick. As to
the items I'll have left, that depends on how the unit gets sold.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 / Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
p.s. these computers mentioned in a previous post also have video cards
that support both VGA and RGB monitor graphics.
CORD
--
___________________________________________________
| Cord G. Coslor : archive(a)navix.net |\
| Deanna S. Wynn : deannasue(a)navix.net | |
|---------------------------------------------------| |
| http://www.geocities.com/SiliconValley/Vista/4395 | |
|---------------------------------------------------| |
| PO Box 308 - Peru, NE - 68421 - (402) 872- 3272 | |
|___________________________________________________| |
\____________________________________________________\|
So far the week has been good a few finds are; digital VT240 model VS240-B
untested; HP Laserjet II has a paper feed problem; Chameleon luggable not
tested yet; AST Premium 386/33 not tested yet; Tektronix KB pn
119-1592-02has built mouse pad; Apple IIe mouse;
variuos books and manuals; a number of different cables; Sun 3/60 not
tested yet; a large number of parts for apples, digital, pc, trs-80 and
others. My best find was free card called a SYNPHONIX Electronic Speech
Articulator model 100 by a company called Artic Technologies with a date
1985 on it. Does anyone have any more info on this card such as is for a pc
or apple, any special software needs ? Thanks and keep on computing -->
John
if you could estimate on the shipping charges to nc, i can let you know asap
if i still want it.
david
In a message dated 98-02-26 11:55:09 EST, you write:
<< Are you still interested?
At 10:56 AM 2/11/98 EST, you wrote:
>yes! i need one! glad to pay shipping to nc. is it available?
>
>david
>
>
>In a message dated 98-02-10 15:25:34 EST, you write:
>
><< Does anyone need a Mac mono monitor? Model number MO400, circa 1987. Best
> offer takes it, no matter how pathetic. Recipient either pays shipping or
> picks it up in the LA area (it's not heavy at all, I can't imagine that ups
> ground would be more than a few bucks on this thing). >>
> >>
Mike Allison <mallison(a)konnections.com> wrote:
> This is the UCSD P System which means that there is no way to copy it to
> the HD as this _IS_ the operating system.
This is the one in the sort of peach-colored IBM binders with
slipcases, right? I had a copy of that a few years back (gave it to
an interested friend back east). While I had it I made some
observations. The manuals didn't mention hard^H^H^H^Hfixed disks at
all. They also seemed to indicate that diskettes held about 160KB
(i.e. no knowledge of double-sided disks). And it didn't want to boot
on anything I had access to except the Panasonic Business Partner in
the QA lab at work -- I'm not sure whether it objected to 80x86s for
x>=2, clock speeds > 4.77 MHz, or what.
-Frank McConnell
Sorry, didn't mean to send this to the list. My apologies....
At 08:56 AM 2/26/98 -0800, you wrote:
>Are you still interested?
While I'm here, I am desperately searching for books on 6502 Assembly,
especially....
"6502 Programming Manual"
SYNERTEK or MOS Technology
"6502 Assembly Language Programming" by Lance Leventhal
Osborne/McGraw-Hill
"Programming the 6502" by Rodney Zaks
Sybex
....but any books would be considered.
Cheers,
Aaron
Mike wrote:
>I have an IBM Pascal System for the PC
>Does anyone know if it's possible to use a hard drive with this system?
>
>There are no references and no seeming commands for manipulating
>storage....
>
>Ideas??
UCSD pascal? I never used the IBM version but the S-100 version had a way
to add device drivers for hard drives ( I recall doing that to add in hard
drive support for UCSD on DYNABYTE S-100 boxes). Vague on this, but the
drivers were very low level, block read/write like in CP/M. If the IBM
version allows for it, you should be able to do a small driver that just
makes ROM BIOS calls for the hard drive.
Is anyone interested in a Zenith Inteq computer? I have four available.
They were used by the U.S. government and are heavily 'shielded'
computers. They contain a 286 on a daughter-board, not sure how the
motherboard is. Also have 2 360k floppy drives and one internal 10 meg
Seaquest tape backup drive in it. Also have a bunch of tapes.
Interestingly, there is a buffer on the back, meaning everything that
plugs into the ports on the back, actually go through about a 4 inch
buffer cable into the actual ports.
These things are heavy, and fairly large. Please send any offers my way.
Remember, I do have four of these units available... all in working
condition.
Thanks,
CORD COSLOR
--
___________________________________________________
| Cord G. Coslor : archive(a)navix.net |\
| Deanna S. Wynn : deannasue(a)navix.net | |
|---------------------------------------------------| |
| http://www.geocities.com/SiliconValley/Vista/4395 | |
|---------------------------------------------------| |
| PO Box 308 - Peru, NE - 68421 - (402) 872- 3272 | |
|___________________________________________________| |
\____________________________________________________\|
Does anyone have the (Apple) Koala Pad driver disk? One of my customers has
a bad disk.
Thanks,
manney(a)lrbcg.com
Would a skinny ballerina wear a one-one?
I have the following items for sale (possible trade)
TRS-80 model 4 - this unit is nearly functional but I'm comsidering
parting it out. It has a great motherboard, power
supply, video section, floppy drives. The keyboard is damaged in that
two keys are broken and it needs the ram changed due to a bad chip. If
someone wants the entire thing they can have it for $15 plus shipping
(42 lbs shipping weight). I'd take 4 1meg parity 30 pin SIMMs for it
plus shipping as well. I want to see if I get any responses on the
entire unit before I decide to split it up.
Commodore 64 (older style, not 64C) - I have a bunch of these units, in
working condition. I'll sell a 1541 drive, C64 and power supply (no
cables) for $20 plus shipping. The entire unit weight is roughly 20 lbs.
Commodore printers - I have various Commodore printers for sale as well.
Drop me a line if interested.
Apple ImageWriter II (color) printer - great condition, with 25 pin to 8
pin cable. $30 plus shipping.
Apple external 5.25" floppy drives - like new set of two. One marked
drive 1 and the other drive 2. Serial cables are attached. $30 for the
set of two plus shipping.
Mac 512k set complete - Original Mac 512k with 400k internal floppy,
software, manuals, color thermal printer. Needs an alignment or
replacement on the floppy drive. Instructions on upgrading the memory to
1mb using stacked DRAMs included. $90 plus shipping for all of it.
Panasonic Sr. Partner 8088 "portable" computer. 512k ram, Two 5.25"
floppies, green composite crt. All original except printer was removed.
Otherwise a great machine. One open 8 bit expansion slot. $50 plus
shipping (approx 25-30 lbs).
Original IBM 5150 PC - original IBM keyboard, original IBM mono monitor.
Terrific condition, floppy based. $50 plus shipping
I also have SLOUGHS of various older parts for PS/2's and other older
machines to include MFM, ESDI, IDE hard disks, half and full height
floppies, option cards, network cards, yada, yada, yada...Drop me a line
if you're looking for something.
While this is a "business" it's actually a formalized part time hobby
for me to pick up a few bucks with a hobby. I keep my prices as
reasonable as possible so that the old "relics" can keep on going, and
going, and going......
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 / Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
Thanks...I've already e-mailed Dave Baldwin. I'm a TCJ subscriber (as
everyone on this list should be...!) I also e-mailed the CP/M FAQ coor-
dinator with the [sad] news.
Damn, another resource gone the way of the Compaticard.
Regards,
Jason Brady jrbrady(a)mindspring.com Seattle, WA
>Date: Thu, 26 Feb 1998 06:27:57 GMT
>From: toucansam9(a)juno.com (Leo M. Cavanaugh III)
>To: classiccmp(a)u.washington.edu
>Subject: Re: Walnut Creek CP/M CDROM Discontinued
>
>On Wed, 25 Feb 1998 18:00:09 -0600, you wrote:
>
>>The Computer Journal used to carry this CD. Try at
http://www.psyber.com/~tcj/
Would anyone be interested in working on an IBM S/36 emulator for Linux?
I'm not a S/36 guru, but I have several, one 5363 up and running and about
10 years of experience hacking C (please don't throw any gimpelesque C
programming problems at me, I'm not up for it right now <g>).
I'm not ready to roll yet, but if anyone's interested I can start gabbing
about it and collecting info. I want to install and play with a couple of
the emulators that are floating around out there as well as collect
information on the instruction set, etc.
As far as periphs are concerned, we can get lift the OS (SSP) and microcode
(if it's even needed) off a 5.25" set of the distribution diskettes from a
standard PC floppy drive. I don't even want to think about 8", although it
could be done with the the Microtech FDC and a driver.
Just a thought.
Dave Wollmann
dwollmann(a)ibmhelp.com
Allison,
I agree. Find an original classic and bring it back to life. But this
is my subjective viewpoint (as well). If one wants to frankenstein a
machine that is entirely their business, there is no right or wrong to
this hobby and I can only speak for myself. I also restore old radios
and televisions. Some fellow enthusiasts will take an old television
cabinet and place a new color chassis in it, others refinish cabinets
to look brand new. There are cases where an incorrect chassis is added
to a set to get it working because the original is unobtainable. It is
all subjective and up to the individual.
Marty
______________________________ Reply Separator
_________________________________
Subject: Re: Re[2]: Provenance and lineage
Author: classiccmp(a)u.washington.edu at internet
Date: 2/26/98 12:00 AM
< I don't care for replicas. Instead of building a replica why not try
< to make your own design from scratch? At least it would be original.
I'm likely one of the few that could build a TRS-80/altair/? clone and
use unused parts all of the correct age! My spares bin is that deep and
old. To me there is no point, I can find an original and bring it back to
life easier.
Allison
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From: allisonp(a)world.std.com (Allison J Parent)
To: "Discussion re-collecting of classic computers"
<classiccmp(a)u.washington.edu>
Subject: Re: Re[2]: Provenance and lineage
X-Listprocessor-Version: 8.1 beta -- ListProcessor(tm) by CREN
I couldn't find my old catalog for these folks but I got a new one in the
mail today. They have an 800 phone number, it's 1-800-451-7454. They also
have a website at "www.goldmine-elec.com". Tell them I send you, maybe
they'll give me a discount :-) This is the place that had the pens for the
Radio Shack pen plotters.
Joe
BASF model 6106, part #54670
Looks like a HD, connected to a floppy with a
ribbon cable, which then goes to the motherbd.
Found in what appears to be a homebrew TRS80-type
puter with LNW expansion board.
Thanx in advance for any help.
I'd also be interested in any advice as to where
to list this Beast for sale. (weese(a)mind.net)
---mikey
I remember building embedded control systems with these D5 cards back in
the early eighties. You are right, it is an evaluation system,
but it was often used for simple prototypes and small production runs.
Motorola priced it relatively cheap so engineers could gain familiarity
with the 6802, which was an "update" of the classic 6800 processor. The
6802 incorporated the 2-phase clock generator circuitry onchip-- you
used to have to add a nuisance clock circuit to make the 6800 run. I
think the 6802 also included 256 bytes of RAM (but my recollection's
fuzzy on this point.) Since the board also included a little
debug/monitor program in PROM, using that hex keypad and display, you
could learn a lot about the instruction set just by hooking up a power
supply and playing. It was a lot like the KIM or AIM-65 boards for the
6502 cpu.
Does the D5 have a large set of edge connect fingers (like, say, 86
contacts or something like that)? I can't remember...
Other Motorola evaluation kits, like the D2 (a predecessor of your D5,
also based on the 6802 cpu but built as 2 boards--the keypad was
separate) had a full electrical interface to Motorola's ExorBus, which
was their proprietary general-purpose microsystem bus. They made a full
range of heavy-duty industrial boards for ExorBus, and their development
systems used it too, so you could build full-blown microsystems with
their board sets. This was a competitor to Intel's Multibus in the
industrial control market. You could take a D2, when you got tired of
playing with it as an evaluation system, detach the keyboard, and plug
it in to an ExorBus as the cpu card.
It's barely possible I've got some old docs hiding at home... I'll check.
Ian McLaughlin <ian(a)okjunc.junction.net> writes:
>
>Hello all,
> I just aquired a "Motorola Memory Systems MEK6802D5" single board
>computer. It appears to be a 6802 evaluation or prototyping unit. It
>has a hex keypad and a 6-digit HEX display. In my old Motorola
>literature, I can find a reference for a MEK6802D3 from 1979, which
>appears to be an older version of this. The date code on the chips
>places it at circa 1980.
>
>Does anyone have any information on this unit? Any idea where I can get
>any documentation or programming info? It appears to be fully functional
>(at least, I get a display, and I can page up and down through memory
>examining and changing contents, etc).
>
>Any info would be appreciated.
--
Arlen Michaels
Nortel
Ottawa, Canada (613) 763-2568 amichael(a)nortel.ca
