> > Generally for the old machines we talk about on this list, the chip type
> > code is easy to differentiate from the date code, because of the
> > prevalence of 7400-series TTL chips. Any 74xx or 54xx number will be the
> > chip type, while the other number will be the date code.
>
> Until you get a machine built in 1974 :-). It's happened to me, it's
> mentioned in 'The Art of Electronics', and it's doubtless happened to
> others here.
Too right. And they don't half misbehave when you mistake the date code for
the logic function :-)
I've got a large boxful of TTL with 74 date codes. Trouble is, I *still* can't
tell which is which on one or two of them, just by looking.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Has anyone noticed any problems with the list dropping msgs ?
For example I posted some replies to the "Good find" thread and never
saw them. I see there was also a "Hyperion" thread which from Jason Pero's
reply I presume was posted by Doug Yowza (sp ?). I figured at first it was
just a glitch in my upload, but the "hyperion" miss says something else.
I'll have to check this with my ISP, if no one else is having this problem.
thanks larry
lwalker(a)interlog.com
re my own message:
In a search of comp.sys.tandy I have found that the Dick Smith System 80
(TRS-80 Model 1 clone) was known as the PMC-80/81 in the US if that helps.
Phil
Well,
The prognosis is not good for the Cadnetix system. I have tracked down a
couple of engineers from the original company (Which was bought by Daisy,
bankrupted, and bought by Intergraph) working at various places and no one
seems to be able to help. The two most common responses are first that I
am some kind of lunatic for wanting to get a proprietary circuit-design
workstation running, and second that any and all technical/engineering
documents for all Cadnetix hardware is compost in a Colorado landfill. One
of the binders that I grabbed with the system was the maintenance record,
and tells a dismal tale of constant board replacements for various
failures (no wonder they went broke), including a description for what is
happening now. The final result that time? After replacing the drives,
replacing all of the boards, and checking all jumpers and cabling,
Cadnetix just shipped out a newer unit to replace it. Oh well. One
interesting note is that this document has some monetary figures on it;
this company was paying over $16K a year to lease a 68020 with 4megs of
ram and 240megs of storage (2 80meg HD's and the 80meg Cipher), circa
1986.
I was told by one legacy dealer that my Pertec-interface Cipher C880 is
worth about $50 to scrap dealers. He then offered me a complete IBM System
36 with drives,tapes,interfaces, etc., that I'm going to pick up this
week. BTW, does anyone have an extra pertec-to-scsi adapter laying
around in the closet? ;)
Aaron
At 03:57 PM 4/2/98, you wrote:
> Actually the machines are the same size. The PF keys are deeper on the
Um, no... The 102 is thinner than the 100. That's one of the photos I
took t'other day for my m102 page (getting 'em developed this week, then
gotta scan them (gotta un-bury the scanner first), then get all the data
files ready...) I'll post the pictures as soon as I get them scanned.
(P.S., for more images than you can get to properly, check out
<http://www.sinasohn.com/clascomp/images/> -- you'll see the directory
listing of all the images I have so far.)
> 7) A telephone cable to connect the MODEM in one of these to a standard
>phone jack. It has a 8 pin DIN plus that fits the MODEM post and two phone
>cords coming out of it. There is also what appears to be a dummy female
>connector that fits over the male connector.
The idea was to be able to leave it in place:
Wall|=--------.----------=|phone
|
m100
If the m100 was connected, the phone was not. The dummy female connector
simply shorted the appropriate wires so the phone would work again.
> I will take $50 plus shipping on the computers ($40 for the one missing
>the label) and best offer on the extra pieces. Or I will trade for HP
Since I have 3 m100's, a m102, and 2 NEC 8201a's, I'll let other take
advantage of this... 8^)
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger(a)sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.sinasohn.com/
About the fisrst RL02 spin problem:
THere's a small rubber button that pushed the pack cover detector too see if you
have the pack cover in. That button had become depressed over time by pressure.
I fitted a washer around the rubber plug to stick it out more.
Now the drive spins up normally and it doesn't need me to weight the lid.
-------
>
>> > Can I make one,
>> > get one REALLY cheap, or operate the thing without one? Also, it
>>
>> Don't know. I bet it emits RF, and the tablet probably has a circuit
board with
>> traces running horizontally on one side an vertically on the other.
My Dauphin
>> detects the pen in this manner.
>
>The older sumagraphics tables like the Bit Pad 1, the ID series and the
>Apple graphics tablet worked by sending a magnetic pulse along some
wires
>made of special alloy. I believe this pulse travelled at approximately
>the speed of sound in the wires - there was a shock wave that travelled
>along them caused by magnetostriction.
Magnetostriction?
>The puck was a simple sense coil. I had to rewind one of mine once, and
I
>seem to remember it was something like 11 turns of 30swg wire. That
would
>be a start anyway.
>
>Also I seem to remember that the buttons on the puck had 100k resistors
>in series with them. The other side of the button was grounded. This is
>also critical - otherwise noise breaks through into the sense coil
amplifier.
>
> / 100k
>Gnd----/ o---\/\/\---- Button input
>
Do you know the pinout for the plug?
>
>Certainly the Bit Pad 1 came in a serial version (and also a GPIB
>version and a parallel version).
>
>There's another type of tablet that consists of an XY matrix of PCB
>tracks - plain copper PCB tracks. They are individually driven by a set
>of decoder/driver chips which are driven by a simple microcontroller.
>Again the puck is a simple sense coil.
>
>Thing is, it has a much better resolution than the spacing between the
>tracks. And there's no extra hardware, like high-speed-ish counters.
I've
>never figured out how that one works - any clues?
>
Well, I have this second one. My guess is that it uses capacitance,
like touch-to-turn on lamps.
>-tony
>
>
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I have a bunch of 80 MB mac hard drives. would an old PC SCSI card
run them?
>
>HUH? Neither of these are an helped/hindered by the 386. SCSI is not
>needed to run 1.44/1.2 FDDs. You can put scsi in there even when it
was
>an plain xt. To run the bigger floppies you need a controller that
will,
>most XT controllers will not. JDR and JAMCO sell a board that will do
up
>to 2.88 drives in a XT slot.
Has anyone actually seen a 2.88 MB floppy drive?
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Ward Donald Griffiths III wrote:
> Max Eskin wrote:
> >
> > I found a PS/2 Model 70 recently, which would normally have a 386,
> > but the previous owner installed a Cyrix 486 upgrade chip. Does
> > anyone know if I can use a 386 math coprocessor with this? I want
> > to run AutoCAD.
>
> The i486 has a coprocessor built in, I assume that the Cyrix does
> as well. Try the software. IIRC, AutoCAD doesn't _require_ a math
> coprocessor, but one does help performance by an order or two of
> magnitude on a 386.
> --
No, the Cyrix 486DL (I assume it is a DL or DR2 if it's in a 386
motherboard) is not the same as an Intel 486. The Cyrix 486DL was an
upgrade CPU for the 386 pinout, adding a 486 instruction set and 1K
internal cache. The 486DR2 version was clock doubled. These CPUs do
not have floating point. Generally an Intel 80387 did not work
reliably, but the Cyrix 487 co-processor did. ULSI (and I think IIT)
also made 487s. You can try the Intel 387, sometimes they ran ok,
mostly it depended on the speed range used.
Jack Peacock
> Date codes are stamped on just about every IC, and some other parts too.
>
> They are generally a four digit number of the form YYWW, where YY is the
> last two digits of the year in which the chip was munfactured and WW the
> week number, from 01 through 52.
>
> Examples would be "7830" for the 30th week of 1978, and "8101" for the
> first week of January 1981.
>
> Generally for the old machines we talk about on this list, the chip type
> code is easy to differentiate from the date code, because of the
> prevalence of 7400-series TTL chips. Any 74xx or 54xx number will be the
> chip type, while the other number will be the date code.
I learnt this one in a DEC PDP11-05. The chips are TTL - 74xx not
74LSxx or anything else - and almost every date code is in 1974. (i.e.
also 74xx). The trick is that the chip no. usually has manufacturers
name codes, package codes etc. embedded, e.g. SN7400N for one of the TI
packages (I forget which!), while the date code in my experience never
does. Be warned! I read somewhere (Horowitz and Hill?) that many
distributors got this wrong in 1974 and shipped the wrong chips...
Philip.
> At 07:48 PM 4/2/98 -0600, you wrote:
> >* I'll return or destroy any personal data I find on a machine I acquire.
>
> change to:
>
> ...acquire, keeping it in the strictest confidence should I find it
> necessary to view it.
>
> or something like that.
I would also substitute "personal or commercially sensitive data" in
this rule.
Philip.
A while ago, I found a SummaSketch Plus graphics tablet sans the
little mouse thing, whatever the official name is. Can I make one,
get one REALLY cheap, or operate the thing without one? Also, it
hasthree connectors; a serial connector, an RJ-11 connector that
I think is for the mouse, and some kind of weird square four-pin
connector; what is that for? Do I need some kind of card?
NOTE: I do have AutoCAD with the appropriate drivers.
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Hi all,
Well, I've got some good news, and I've got some bad news.
The good news is that I've finally had my IMSAI 8080 sent out to me
>from Connecticut! It's in my "workshop" (a.k.a. the Garage) right now.
The bad news is... my parents, god bless 'em -- They really didn't know
any better, and it's partially my fault for not getting it shipped out
to me sooner -- well, they had the poor thing stored, along with my BYTE
and Dr. Dobbs collection, in an outdoor shed. Although largely protected
>from the elements, this poor sad little IMSAI has endured two New England
summers followed by two New England winters in a non-climate-controlled
room. Great.
The practical upshot of this is that it's not doing so well. I need
help :)
The power supply seems to be worst off of everything. The boards,
although needing to be cleaned of some spots of mildew, seem mostly OK.
Possibly a few tiny rust spots -- I'd say 100% of the chips are replacable
by easily-found parts, either period pieces or newer pieces. But probably
99% of the chips won't need replacing. They seem to be doing very well.
I have two Cromemco ZPU boards, so even if one has some bad parts,
I should be able to take spares from the other.
But that power supply... eek. The transformer is covered in a thick layer
of rust, and the whole thing just looks dirty and mildewed. I think
the best course of action now would be to desolder every component of
the power supply and build a new one -- sadly, losing a bit of IMSAI
authenticity in the process. Oh well... Say, does anyone know where
I can get a pair of 95000uF 15VDC electrolytic capacitors? =) Oh, and
a pair of 10000uF 25VDC -- mustn't forget those.
The good news here is that I have the original IMSAI User Manual --
the one with complete system diagrams and assembly instructions, since
this was a kit. Full parts list and photos from many angles. This will
make rebuilding the power supply _so_ much easier.
The S100 backplane is mildewed as well. How should I clean this? I know
this is probably a FAQ question, but I still can't find the archives of
this list, I'm afraid.
I'll probably also need to replace the little screws that hold on the
front panel plexiglass. It's really odd how some little components,
like these, rusted over terribly, while 95% of the rest of the system
just has mildew or mold spots, and no rust. Weird (but wow I'm glad.
Of course, I think the chassis is aluminum, so it's no wonder it didn't
rust =) Time for a Fry's run...
If anyone would like to help me out with this little project, please
drop me a line. I'm a bit out of my league here -- see, I'm mainly a
software guy, and my hardware building/fixing experience is very slim.
I can work a soldering iron alright, but that's about where my electronics
skill ends :) I have, however, always wanted to learn.
Suggestions welcome! Note, however, that it is not productive to
point at me and go "HA ha!" :)
-Seth
I have a newly acquired DEC VT 131 with keyboard to get rid of. In great
physical shape, untested working condition. I'll know more about the
electrical condition.
Whether working or not I need $15 plus shipping for this unit. I need to
weigh it as well but wanted to give everyone a chance to mull it over
and have a chance to inquire while I check on the working condition and
weight.
--------------------------------------------------------------------
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/
ICQ # 1714857
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
One other item I recently acquired that I thought I'd ask about.
Ever hear of the Exatron Stringy Floppy mass storage system? The
one I have was apparently used with a TRS-80 model 1. But it had
a brochure that said it was available for S-100 and 6800 systems.
It is a minature tape system...the tapes look like very small
casette tapes. The tapes/waffers apparently come in different
sizes with a 5 foot length holding about 4k. Anyone ever use one?
Seems pretty interesting.
Thanks...Win
--
Win Heagy
wheagy(a)erols.com
Well... I find myself on the virge of a major equipment aquisition and
development project, and it has become painfully obvious (as I fall over
things trying to map out space) that I need to free up some major space in
both the Computer Garage and warehouse.
So, I offer up the first Computer Garage 'Virtual Garage Sale'.
(since it always grates me when I see a posting from someone about their
latest Ebay auction rather than letting the group have a first shot)
The Garage rules are fairly simple: (tho rambling)
1) The sale will run for one calendar week. After that any items not
spoken for will most likely end up in an auction on Ebay.
2) All items are to be considered complete, but untested unless specified
in its listing.
3) Documentation is not included. I have docs on many of the items
(somewhere in the archives), but if I have to find them it will add $5.00
to the cost of the item.
4) Shipping is not included. Figure $5.00 for most (small) items such as
S-100 boards and such. Larger (heavier) items will ship at prevailing UPS
rates plus cost of packaging. If you are close enough (to Oregon) to pick
things up, all the better (and cheaper)
5) To claim an item, respond by email. I must receive payment for the item
(plus applicable shipping) within seven business days (weekends don't
count) from the time I confirm your request or the item will be released
for the next inquiry or to go into the auction. Orders paid by check will
held for five business days, orders paid by bank or Postal Money Order will
be shipped as soon as possible.
6) In the event that multiple people request the same item, the message
that arrives first will get the first shot.
7) All descriptions reflect as much information as I have on the items at
the moment, and usually reflect their manufacturer's designation or model
number. If you don't know what it is, ASK! If possible/practical, I'll
try to get more information/details. Once you have it, it is yours. If it
is not what you thought it was, you had your chance.
8) Trade offers may be considered (see my web page for the wish list) but
it would have to be a good one! (now, if you have contacts in the bowling
equipment industry, send me an email and lets talk)
9) Prices on items are not (firmly) cast in concrete, but let's not get too
ridiculous. Offers will be considered, remember I'm trying to make space
as much as money, but Ebay lurks. Price are per item. There are multiples
of some items. (and all price flames direct to /dev/null) If you want a
bidding war, wait for the auction.
10) All sales are final.
There will likely be more items to follow, but this is what I could get
to/catalog this weekend...
Now... On to the list!
============================================================================
=======
S-100 compatable items
qty. 1 - CompuPro (Godbout) CPU 86/86 - $35.00
qty. 1 - CompuPro RAM 17 - $35.00
qty. 1 - CompuPro System Support 1 - $35.00
qty. 3 - CompuPro RAM 22 - $45.00
qty. 1 - CompuPro NET 100A - $50.00
qty. 2 - CompuPro Disk 1 - $30.00
qty. 1 - CompuPro disk 1A - $35.00
qty. 1 - CompuPro SPIO - #25.00
qty. 1 - CompuPro SP186 - $35.00
qty. 1 - CompuPro Interfacer 3+ - $30.00
qty. 1 - CompuPro Interfacer 4+ - $35.00
qty. 2 - CompuPro CPU 8085/88 - $35.00
qty. 4 - CompuPro 20 slot shielded/terminated S-100 motherboards
(with all connectors) - $50.00
qty. 1 - Teletek SBC-1 (single board computer) - $25.00
qty. 1 - Teletek SBC-1 (socketed board, no components) - $5.00
qty. 2 - CCT Printerfacer 1 (printer interface/buffer) - $25.00
qty. 1 - Konan DCG100 hard drive controller - $35.00
qty. 1 - California Computer Corp. Modem 2501A 12 slot shielded S-100
motherboard (with all connectors) - $25.00
qty. 1 - S-100 rack mount chassis (mfgr. unknown) - $40.00
============================================================================
=======
Computers
qty. 1 - DEC VAXstation 3540 (badged as a 3520, but has 2nd CPU board.)
memory, no drives, drive/console cabling missing, dress panel
missing, tower cabinet - $150.00
qty. 2 - DEC DECstation 2100 - $45.00
qty. 2 - Altos Model 580 - $40.00
qty. 2 - Altos Model 586 - $45.00
qty. 1 - Bell & Howell (Black) Apple ][+ - $45.00
qty. 1 - Compaq Deskpro 386/20e - $20.00
qty. 1 - Compaq Deskpro 433i - $30.00
============================================================================
=======
Disk Drives
qty. 2 - DEC Storage Expantion Units (matching cabinets to the DECstations)
with (I believe) two RZ24 drives in each - $40.00
qty. 2 - DEC Storage Expantion Units (VAXstation 2000 style cabinets) with
one RZ55 drive in each) - $30.00
qty. 1 - NEC Disk Unit PC-8881 (single 8 inch drive in cabinet) - $15.00
qty. 1 - Fujitsu dual 5.25 inch drive unit Model MB27611 (appears to have some
type of interface/controller board mounted in cabinet) - $15.00
============================================================================
=======
Misc.
qty. 1 - Black Box HPIB (IEEE-488) AB Switch - $10.00
qty. 1 - ICS Electronics Model 4880 Instrument Controller - $20.00
qty. 3 - Qume QVT101 Video Terminals - $20.00
qty. 1 - Tektronix Model 650 Studio Video Monitor - $50.00
qty. 1 - Compaq docking station (if there is any interest, I'll try to get
the model number) - $10.00
qty. 1 - DEC VAX 11/750 backplane (with or without card cage) - $25.00
qty. 1 - DEC VAX 11/750 power supply (H7104-C) - $20.00
qty. 1 - DEC VAX 11/750 power supply (H7104-D) - $20.00
qty. 1 - DEC VAX 11/750 power controller (875A) - $20.00
qty. 1 - DEC LN03 Laser Printer - $20.00
qty. (lots) - 5.25 inch diskettes DD or HD, mixed soft sector/hard sector.
(specify your needs, I'll see what I've got) - $0.10
============================================================================
=======
Let the crazyness begin...
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
>The cached (486) and highly piplined (pentium and friends) are more
>variable as the clock speed is only an indicator of performance and if
>the code runs with a log of cache misses the speed can really drop to
>nothing. I know as the external cache croaked on my 486/25 and I ran
>for a bit with the internal cache turned off and the performance was
>worse than a 286/12! With the internal cache running it was only about
>10% off the performance of the 64k external cache. Just to give you
and
>idea.
Are you saying that a 486 is only faster than a 286 because of the
cache?
><That's one, but there are many others. You could recompile them to be
><optimized for a 386, though.
>
>Funny I have unix v7 running on a PDP11 with only 256kb of ram. it can
be
>done.
Isn't v7 the latest UNIX distribution?
><><>Windows 3.1 does run on it with the 1meg.
><>Runs good and most software that will fit in 1meg runs ok. Swapping
is
><>heavy though so a fast disk helps.
I once had an old 386 with a 20MB MFM hard drive and 2MB RAM. Windows
ran OK, but Word 2.0 ran very poorly. Strange that I've never seen
3.0. Is it rare?
>
>IF you mean running netscape, that monster wants a minimum of 8m just
to
>run and will still crash if pressed. Wordperfect for windows runs
great,
>as does Word3.0 in 1meg. There are a lot of older packages that run
real
>well in winders3.1 and 2meg or less.
>
Actually, Windows 3.0 came with a copy of MS-DOS executive, the
precursor to the program manager, while 3.1 didn't. That's not
bad, as well as the ability to run real mode programs.
>Windoes 3.0 was not widely supported and it was upgraded to 3.1.
><already have. BTW, where can I get a lisence+docs, disks for Windows
2.x
Well, someone from this list let me copy his. It's not bad, but needs
DOS Version 3.3. You can use Setver for the same thing, but you will
have to disable it for Windows 95, which needs at least 7.0. I have
DOS 3.3, and it's a good DOS. If only it had MOVE...I can send anyone
who wants them some copies. I THINK I have four more boxes. Five are
already spoken for.
It's too bad that Linux needs so much space and so little RAM. I
would rather have somewhat of a greater balance... I installed red
hat recently, and it's an awful pain, just like slackware. I wish
I could install Mac System 1.0 on my PC without emulators...
>Yes I did with help from a few people. The system it's on is a
386DX/33
>with 128k cache and a 420mb IDE and a CDrom. I'm not running X on it as
it
>only has 8megs and a low end VGA board currently. I'm not that
>enthusastic over it as somea re.
>
>
>Allison
>
>
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<I recently picked-up a couple TRS-80 model 1 keyboards, but there
<was no monitor. Does anyone have info on using a B/W TV as
<the monitor? I understand that the model 1 monitor was basically
<a converted TV.
Yes, you can take video from pin4 video and pin5 (ground) and drive a
common NSTC monitor.
Allison
I found a PS/2 Model 70 recently, which would normally have a 386,
but the previous owner installed a Cyrix 486 upgrade chip. Does
anyone know if I can use a 386 math coprocessor with this? I want
to run AutoCAD.
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Zane Healy proclaimed...
>Basically I've got a really stupid question, does the external SCSI bus
>HAVE to be terminated? If so any idea's on how to go about doing that
>without finding a DEC terminator?
The only "stupid" question is the one you keep to yourself. ;-)
To answer; yes, you must have termination at both physical ends of a SCSI
bus for reliable operation. If the DEC terminator you mention is the one
I'm thinking of, I've looked on the insides and have not been impressed.
They're simple passive terminators, suitable for short runs and low speeds.
What device is it you're seeking termination for?
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Sysop, The Dragon's Cave BBS (Fidonet 1:343/272)
(Hamateur: WD6EOS) (E-mail: kyrrin(a)jps.net)
"Our science can only describe an object, event, or living thing in our own
human terms. It cannot, in any way, define any of them..."
<megahertz (the Cyrix PR233's only 187.5) and actually benchmarking and
<performing like an Intel at a higher speed?
<>Besides it's checkes out on mine at 16 using norton, QAFE+ and a few
<>others.
<OK. If there's one thing that I've learned, what chip manufacturers put
<chips means nearly NOTHING. It's the software, RAM, bus and how they wor
<together that makes performance/lack thereof.
What on the chip is the design maximum (which may be exceeded by over
clocking at some risk), however the system design, wait states, bus
interface and a host of other design factor can slow the cpu down.
The cached (486) and highly piplined (pentium and friends) are more
variable as the clock speed is only an indicator of performance and if
the code runs with a log of cache misses the speed can really drop to
nothing. I know as the external cache croaked on my 486/25 and I ran
for a bit with the internal cache turned off and the performance was
worse than a 286/12! With the internal cache running it was only about
10% off the performance of the 64k external cache. Just to give you and
idea.
<>Look up ELKS.
<That's one, but there are many others. You could recompile them to be
<optimized for a 386, though.
Funny I have unix v7 running on a PDP11 with only 256kb of ram. it can be
done.
<><>Windows 3.1 does run on it with the 1meg.
<>Runs good and most software that will fit in 1meg runs ok. Swapping is
<>heavy though so a fast disk helps.
<Yeah, but how much Windows 3.1 software fits on a meg? I'd say at least
<I ran Windows 3.1 from 1993 to 1997, and I'd have to say that most progra
<that I ran were fairly large, most in double-digit MB's.
IF you mean running netscape, that monster wants a minimum of 8m just to
run and will still crash if pressed. Wordperfect for windows runs great,
as does Word3.0 in 1meg. There are a lot of older packages that run real
well in winders3.1 and 2meg or less.
<>3.0 is ok but it will not run some apps at all!
<Yeah, and Windows 3.1 won't run a lot of apps. It really all depends on
<owner, what they want to do, how they want to do it, and what SW they
Windoes 3.0 was not widely supported and it was upgraded to 3.1.
<already have. BTW, where can I get a lisence+docs, disks for Windows 2.x
<I need one for the above computer...
Why? For historical points but it was a dog and buggy as hell.
<Really? 3.3?
Yep!
<BTW, did you ever get that Linux box working? I just started
<w/Linux in Jan. and since then, I've installed, removed, reformated and r
<7 or so distributions. If you want, I can help, although I doubt my
<usefulnes past my own machines...
Yes I did with help from a few people. The system it's on is a 386DX/33
with 128k cache and a 420mb IDE and a CDrom. I'm not running X on it as it
only has 8megs and a low end VGA board currently. I'm not that
enthusastic over it as somea re.
Allison
I acquired a TRS-80 VOXBOX last week. It is in the original box
with cable, interface box, mic, and three casette tapes. I remember
when RS was selling these. Has anyone ever used one? Did they actually
work?
Any historical insight is appreciated.
Thanks...Win
--
Win Heagy
wheagy(a)erols.com
Hi,
I recently picked-up a couple TRS-80 model 1 keyboards, but there
was no monitor. Does anyone have info on using a B/W TV as
the monitor? I understand that the model 1 monitor was basically
a converted TV.
Thanks...Win
--
Win Heagy
wheagy(a)erols.com
<>It's warped. It's a 386/16 and that's all.
<Yeah, but with extra RAM, etc. it could very well benchmark as a higher o
<lower MHz, even with today's Winbench's.
Lower mhz yes faster never. Faster means a timer error or the program is
broken. The 386 implmentation on that card is very vanilla and no cache.
Besides it's checkes out on mine at 16 using norton, QAFE+ and a few
others.
<Linux won't run XF86 even in mono mode with less than 8MB RAM, which make
<zero sense because any PC that shipped with 8MB RAM and a mono card was
Whatever you do don't tell my 386sx/33 that! It might stop working.
< There are several projects going on to have Linux run on 286 and lowe
<machines, and, of course, lowering RAM consumption. There's an 8MB
<distribution that only requires 512K (I believe) RAM, if you give it enou
<swap space (in that case, it would be 3.5MB)
Look up ELKS.
<>Windows 3.1 does run on it with the 1meg.
<It'll run, but in my experience, Windows 3.1 doesn't do to much with it.
<friends 286 (they were still using it last summer when they moved, but i
<was retrofit with MY 210MB HDD, and a SVGA monitor and graphics card) Yo
<can't extract files, run most software that was designed for Windows 3.1
Runs good and most software that will fit in 1meg runs ok. Swapping is
heavy though so a fast disk helps.
3.0 is ok but it will not run some apps at all!
<I'd go with 3.0, if I had a choice. If I was you, I would just upgrade t
<DOS 5.0 or so. It'll run loads of software, and is more consistent with
I'm running 6.22 and LW had 5.x on his.
<hardware that you have, minus the 386CPU. And, it's smaller, so you coul
<actually have more software on it. Come to think of it, I believe that
<Windows 3.1 is like 25MB, plus the DOS 5.0 that's required to run it, whi
<fits on 5 720K floppies, I believe.
Huh? I had 6.22, win3.1, procomm+, and a few other things and had about
4.5mb free on a 20mb drive. DO5.0 would reduce it some but not alot, 3.3
would be far smaller and still run w3.1.
Allison
Ok, I ripped it to pieces. The drives x2 are Micropolis 1325's, connected
via an adaptec card:
Adaptec Inc.
400041-00A
(c) 1985
In the backplane, there are 6 vertical slots. From left to right:
1) 68020 processor board
2) "Graphics Memory" board, with chips that say:
Intech 52467
VDAL 0405H
vli 601s 01152
vl6845E-23PC
syp6845EA
3) The display board? Main chip:
LOGIC
LMI16DC
0114A
8448
4) Empty
5) Memory
6) Empty
I am afraid it may have been cannabalized, with the empty slots and all.
The other side of the backplane has all three of these slots
interconnected with ribbon cables, and the 6th has what looks like some
kind of resistor-pack board on part of the pins.
Any clues? An hour of searching on the internet only found resumes of
engineers who used it for pcb design.
TIA,
Aaron
