Does anyone know what the following Digital part numbers refer to?
PC500
RCD31
The PC500 seems to be a display with a 5.25 inch floppy drive and some
electronics. It is mounted on top of the RCD31 unit which is in a pizza
box style case. Is this some sort of PC clone or maybe a DecMate?
--
David Betz
dbetz(a)xlisper.mv.com
DavidBetz(a)aol.com
(603) 472-2389
Glenn:
Thanks for the encouragement. It seems that at one time, one of us did try to
contact TA to no avail. Should we try again?? I'd need to get the contact info
>from the gent that tried it the first time, and I'll give it a second
go-around.
-------------------------------------------------
Rich Cini/WUGNET
- ClubWin Charter Member (6)
- MCPS Windows 95/Networking
----------
From: Glenn Roberts
Sent: Tuesday, July 15, 1997 10:23 AM
To: Richard A. Cini, Jr.
Cc: bcw(a)u.washington.edu
Subject: Re: Altair Construction Manual
outstanding! i continue to applaud your efforts.
i would think that all we need to proceed is a trail of evidence showing a
"reasonable effort" to receive permission in this area.
this can be a precedent-setting effort for publication of all kinds of
useful historical information that might otherwise be lost forever.
thanks again for blazing the trail!
- glenn
At 02:04 AM 7/13/97 UT, you wrote:
>To all Altair fans...
>
> Well, my more-than-kind individual has provided me with the first of three
>installments of the original Altair construction manual. He scanned all 102
>pages of the doc and made it into a PDF document -- almost 7mb in size. He
is
>also providing me with manuals for "the 88-4K, 88-ACR, and other stuff." I'm
>not too familiar with all of the available options since the Altair was
really
>before my time, but it looks like the 4k memory board and other stuff.
>
> I'm not going to U/L the docs yet, first for size reasons, and second,
until
>we determine if we should try to contact Triumph-Adler...
>
>On Thu, 10 Jul 1997, Jim Willing wrote:
>>>So, it can be assumed that TA [Triumph-Adler of Germany] now >>owns all of
>the rights to things MITS/Altair. I've tried to contact them >>on
occasion on
>related matters and have gotten no response of any >>kind to date.
>
>Anybody have any thoughts?
>------------------------
>Rich Cini/WUGNET
> - ClubWin Charter Member (6)
> - MCPS Windows 95/Networking
>
>
>
+=========================================================+
| Glenn F. Roberts, Falls Church, VA
| Comments are my own and not the opinion of my employer
| groberts(a)mitre.org
If you like the History of Personal Computers you might like to read my
review of the Stan Veit book I just received from him.
You will find it at:
<http://www.ndirect.co.uk/~e.tedeschi/news/news73.htm>
I know that the book has been published in 1993 but some of you (like
me) might not have been aware of it till now. Stan has seen all the
personal computer revolution from the inside as he opened the second
computer store in the USA and the first on the East Coast (New York).
Please forgive my spelling mistakes....
Thanks
enrico
--
================================================================
Enrico Tedeschi, 54, Easthill Drive, BRIGHTON BN41 2FD, U.K.
tel/fax +(0)1273 701650 (24 hours) or 0850 104725 mobile
website <http://www.ndirect.co.uk/~e.tedeschi>
================================================================
visit Brighton: <http://www.brighton.co.uk/tourist/welcome.htm>
<> wash them out throughly and disassembled and dried them well. Generally
<> water is not that damaging. Just don't power them wet.
<
<I would remove anything high-voltage (front end of the power supply) and
<BAKE them for quite some time (a day is nice). Water has a way of getting
<into windings and comprimising the insulation (remember, in a transformer
<the insulation is _thin_ - often paper and painted on varnish).
This is a good point for the masses. I've done enough design(20+ years)
so transformer design and the like are familiar to me.
But then again I've cleaned boards in the dishwasher! Works great too.
Also while In has I made a business of salvaging and repair marine gear
that had been dunked in salt water which is very nasty to electronics.
Part of the repair process was to very throughly wash out the unit in fresh
water as no salt could be left (it's very hydroscopic) then repairing any
damage if any. I've had marine equipment work better for this due to
residual salt and dust accumulated being cleaned out!
A good temp to bake at is just under 200f, it's slow but works and most
plastics and semis are ok at this temp! Do monitor it though.
Allison
Sounds like Mattel Electronic Football. My friends and I were the reason
they stopped letting us take to school! damn...that was ages ago.
----------
> From: jpero(a)mail.cgo.wave.ca
> To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
> Subject: Re: Classic Video Games
> Date: Friday, July 11, 1997 5:34 PM
>
> One comment,
>
> Is the display looks like it was using same LED display, "hair thin"
> segments under the plastic lens?
>
> Jason D.
> > Uncle Roger, etc:
> >
> > In regard to your post about the old hand held football game... I
> > certainly do remember that game. There were actually a couple of
different
> > companies or stores that sold them. Radio Shack did have one, but I
> > believe it was the SAME one that was manufactured by Coleco, or a
similar
> > company. I know up until a few years ago I had one... I'll have to look
> > around. Just the other day, I was in a thrift store in Nebraska City,
NE
> > and they had a pile of 'old' handhelds. I didn't have time to look
through
> > it close, though.... but I'm darn sure they did have a football game or
> > two though. I'll go back and check it out for you, though. Oh, while
were
> > on the subject of old football games.... how about those darned
magnetic
> > full-field table football games they used to make?? Do they still
exist?
> >
> > Until next time,
> >
> > CORD
> >
> >
//*=====================================================================++
> > || Cord G. Coslor P.O. Box 308 - 1300 3rd St. Apt "M1" -- Peru, NE
||
> > || (402) 872- 3272 coslor(a)bobcat.peru.edu 68421-0308
||
> > || Classic computer software and hardware collector
||
> > || Autograph collector
||
> >
++=====================================================================*//
> >
> >
> > On Fri, 11 Jul 1997, Uncle Roger wrote:
> >
> > > At 02:03 PM 7/11/97 -0400, you wrote:
> > > >Depends on your definition of "videogame" (coin-operated, home unit,
> > > computer, commercial, etc.) One of these should fit what you're
looking for:
> > >
> > > When I was in high school, there was a precursor to the
Lynx/Gameboy/etc.
> > > crowd that was a football game. There were little red LED's(?) to
represent
> > > players, and you had up, down, and run buttons to control the quarter
back.
> > > It was very simplistic; you basically just ran the quarterback until
you got
> > > a touchdown (but I think you could do a fieldgoal?) Anyway, I think
Radio
> > > Shack sold one, but it may have been someone else.
> > >
> > > Anyone else remember this? Know what it was called? Got one you'd
part with?
> > >
> > > Thanks in advance!
> > >
> > > ---------------------------------------------------------------------
O-
> > >
> > > Uncle Roger "There is pleasure pure in being
mad
> > > sinasohn(a)crl.com that none but madmen
know."
> > > Roger Louis Sinasohn & Associates
> > > San Francisco, California
http://www.crl.com/~sinasohn/
> > >
> > >
> >
> >
> >
Rich Cini wrote:
> Well, I'm reviving my Datamaster. Last year, it worked fine (I at least
> could get into Basic). This year, I can't even get it to boot. I have no
> manuals for the darned thing, so I have no idea what the numbers on the screen
> during the POST mean. I have one reverse-highlighted number: "09" and I'm
> assuming that this is a hardware failure code.
As promised, I have hunted through my various IBM System/23 (Datamaster)
manuals, and found the meanings of the POD (Power-on Diagnostics) error
codes. Here is a summary:
FF}
00} CPU Failure (!)
01}
02 Failure of first ROS module (Read Only Storage module, i.e. ROM chip)
03 Reserved. If this is highlighted, panic.
04 Failure in bottom 16k of storage, or of storage controller
05 CRT (presumably actually monitor) or DMA failure
06} CRT interface
07}
08 Page registers
09-} ROS failure. There follows a little diagram to tell you which chip
19 } to replace. Yes, the diagram in the manual is made of text, too.
** TOP VIEW OF PLANAR SEEN FROM THE REAR **
_______________________________________________
| ====== ====== <-- NOT FOUND ON |
| | 10 | | 11 | <-- SOME EARLY |
| =3=40= =3=60= <-- MACHINES |
| |
| ====== ====== |
| | 19 | | 0D | |
| =7=60= =1=60= |
| *********************** |
| =PATCH= ====== * PHYSICAL LOCATION * |
| | 18 | | 0C | * OF ROS MODULES * |
| =7=40== =1=40= * FOR EACH ERROR CODE * |
| *********************** |
| ====== ====== |
| | 17 | | 0B | -KEY- |
| =6=60= =0=60= ====== |
| | XX | |
| ====== ====== =Y=ZZ= |
| | 16 | | 0A | XX=POD ERROR CODE |
| =6=40= =0=40= Y=ROS PAGE VALUE |
| ZZ=HIGH ORDER BYTE OF |
| ====== ====== FIRST ADDRESS IN |
| | 15 | | 09 | ROS MODULE. |
| =5=60= =0=20= |
| ---(CABLE)-------------- |
| ====== ====== | ====== | |
| | 14 | | 02 | | | 09 | CO-PLANAR | |
| =5=40= =0=00= | =0=20= BOARD. | |
| | (FOUND ON | |
| ====== | ====== SOME EARLY | |
| | 13 | | | 10 | MACHINES.) | |
| =4=60= | =3=40= | |
| | | |
| ====== | ====== | |
| | 12 | | | 11 | | |
| =4=40= | =3=60= | |
| ------------------------ |
-----------------------------------------------
1A-} ROS failure on feature card
26 }
27 ROS failure on 2nd printer card
28} ROS failure on feature card
29}
2A-} RAM failure. Table (which I shan't include) of how codes
30 } relate to different sizes of machine.
31 RAM page access failure
32 DMA page register failure
33 Interrupt controller failure
34 Timer interrupt failure
35 Keyboard error. If flashing, keyboard controller.
If not flashing, you pressed a key at the wrong moment :-)
36 Printer failure
37 Printer not switched on
38 Diskette attachment failure
39 24 volt rail not reading 24 volts
3A-} belong to add-ons not to the system. I didn't bring the
FE } relevant manual pages.
General rules for interpretation:
Flashing inverse video = fatal error.
Non-flashing inverse video = error. Press the Error-reset key and
let the machine finish booting. Then run the diagnostics dikette,
I suppose.
To summarise, it appears you have a dud ROM chip. I imagine the
solution is to copy a ROM chip from another Datamaster. If necessary, I
can arrange to copy mine, but I don't know off-hand what sort of chips
they are. I would also suggest that, unless you too are in England,
logistics of getting the chip to you might be hard...
Philip.
<><><><><><><><><><><><><><> Philip Belben <><><><><><><><><><><><><><>
Das Feuer brennt, das Feuer nennt die Luft sein Schwesterelement -
und frisst sie doch (samt dem Ozon)! Das ist die Liebe, lieber Sohn.
Poem by Christian Morgenstern - Message by Philip.Belben(a)powertech.co.uk
Message text written by INTERNET:classiccmp@u.washington.edu
>The C=128 does not need any kind of bootfloppy, it will start up in C=128
mode. if you type GO64, it reverts to a C=64 kernal.<
You can also hold down the Commodore key (looks like "C=" in the lower
lefthand corner) while you turn it on, and it will come up in 64 mode.
> the 128 has RF output accessable from the RCA jack, a 5
pin DIN video connector that provides composite, or seperated video plus
sound.<
The 128 has an 8-pin DIN connector, as do the later 64s. A 5-pin cable
will work, but for the best possible separated composite picture, an 8-pin
cable will do better.
>also there is a RGB 9 pin DSUB connector so you can use ANY CGA
monitor for 80 col. for the 1702, you need a video cable(looks like you
have
this), and use the separated mode for sharper graphics.<
The 1702 is composite only. Later Commodore monitors, like the 1902, were
composite/RGB switchable. However, pin 7 of the 9-pin 128 video connector
puts out a monochrome composite signal, which (with your own hacked cable)
allows you to view the 128's 80-column signal (normally viewable only with
an RGB monitor) on a composite monitor like the 1702.
>Nope. unless you want to run CPM<
Or GEOS, which is kinda like Windows. Some of the more advanced Commodore
software (like the fax program) runs under GEOS.
>>The next question would be, is it worth trying to repair a C64's power
supply? I got two of them yesterday, both powersupplies are dead. It
looks like the 5V line is shorted to ground. <<
>if it is potted, NOPE. some are unpotted and can be fixed.<
The 64 power supply isn't going to do him much good on a 128; the power
supplies have different connectors, and the 64 supplies aren't as strong as
the 128 supplies. As to potted supplies, I have fixed one or two; some
have fuses up close to the top of the gunk, and it is possible to scrape
away enough of the gunk on each end to bypass the fuse if that is the
problem. But as to whether it is worth the effort, I'd agree-- usually it
isn't. I'm not sure what they pot it with, but starships could use it for
deflector shields!
Gil Parrish
107765.1161(a)compuserve.com
Message text written by Sam:
>I also finally found a C16 but it has a broken key in the upper row :(
These things apparently aren't too common in these parts as this is the
first one I've ever seen.<
If the unit powers up, you're ahead of the game. The video chip, called
the TED, is weak in those units, and probably 1 our of every two you'll
find has a bad TED chip. By the way, the same TED is in the Plus/4, so if
need by the chip can be swapped from unit to the other.
All those C16s with bad TED chips means there are more than a few
non-working units out there that could be a part donor for your keyboard.
If fact, if you can't search around and find, drop me a note and I'm sure I
can.
Gil Parrish
107765.1161(a)compuserve.com
Message from: Uncle Roger <sinasohn(a)crl.com>
>Also, if I'm not mistaken, the Commodore PET's used IEEE-488 for disk
drives, as well as lab stuff. I'm pretty sure I've got an IEEE-488
interface for the VIC-20 around somewhere. <
Yep. Commodore used it on the full PET/CBM line for disk drives, printers,
and whatever else you wanted to attach. That was one reason PETs were
fairly popular in labs in those days-- easy to plug in test equipment.
Gil Parrish
107765.1161(a)compuserve.com
Opps, My name is TJ Plajer, and recently reinstalled the mailer and forgot
to add a space for some reason..... <G>
I did follow your tips, and the drives are in a XT case and there are no
bezels for the drives. there is good air flow, just they seem to run this
hot. I never ran these drives before and have no idea how hot they should
be. as for power cycling, they get NONE. this system has been running for 2
months continous, without any powerdowns since they were installed, so for 2
months now, the thermal stability has (hopefully) stayed the same.
thanx
->X-Sender: cerebral(a)michianatoday.com
->Hello there, I run a fileserver that has 2 ST-225 20 meg drives, and 1
->420 meg IDE drive, this system runs 24/7, and has been running for 2 mo
->continuous now. My question is what is the life expectancy of these dri
->it is often said that the ST-225 series are not reliable, however they
->continue to run strong. also these things run so hot that you can fry a
First off why bother withg the st225s? They are slow (st251s are
faster!) and their reliability is at best ok. FYI: st225s live far
longer if they are cooled. If the fan isn't noisy it isn't moving enough
air past them, seriously! Also if they are in the smae box as all the
other hardware they raise the other components temperature lowering their
life. Heat is not your friend, this is why computer rooms are air
conditioned an usuialy under 70 degrees F.
Allison
->I have seen many gems from DEC, mostly mid-1970s PDP-11s and early VAXe
->I have yet to see any 12, 18, or 36 bit stuff from them, however. The o
there is a reason... PDP-8s were the most prolific and the production
nubers were in teh low tens of thousands and many still serve. The 18bit
stuff were few to start with and hard as hell to expand so they faded
away. the 36bit stuff were also few but interesting. Still many made it
to the bone yard for lack of takers years back. Some of the less common
machines like the PDP/LINK-12s and PDP-15s were only made in the
thousands.
PDP-11/23s are however like flies but, one complete with software (or
better diags) and clean are scarce.
Allison
At 02:11 PM 7/13/97 -0800, you wrote:
>My main question is on the C= 128, along with all the other stuff I picked
>up, I got a Commodore 1702 monitor, and a couple 1541 drives. I've got the
>drive attached, and the monitor hooked up via a RF cable (I guess that's
>what it's called) through the front connection (This works for the Amiga
>500 I also got yesterday). Anyway, I power the thing on, it "buzzes" the
>drive like it's expecting to find something, and I don't get anything on
>the display.
The C=128 does not need any kind of bootfloppy, it will start up in C=128
mode. if you type GO64, it reverts to a C=64 kernal. and if you want to run
CPM, then you need a CPM boot disk, however it is not required to run the
machine. this is what I liked about the 128, 3 mahcines in 1! :)
for your monitor, the 128 has RF output accessable from the RCA jack, a 5
pin DIN video connector that provides composite, or seperated video plus
sound. also there is a RGB 9 pin DSUB connector so you can use ANY CGA
monitor for 80 col. for the 1702, you need a video cable(looks like you have
this), and use the separated mode for sharper graphics. the buzzing you hear
is because you have connected the video out RCA jack to the audio in. You
should have 5 phono plugs on the end of the video cable, and a din plug on
the other. just experament with all the plugs till it works. the video plug
colors usually (but not always)
YELLOW - sound
RED Video chroma
WHITE video Luminace
BLACK SOUND
GRAY Composite video
each manufacturer used different color chemes, and this might be wrong for
other cables than mine.
also the 1702 has a front panel switch that has 3 positions:
1- monochrome this just makes everything green used for composite video
2- Composite video this is just the standard video in, you can hook your VCR
to it for a nice sharp TV!!
3- seperated - this uses seperate lines to feed the video, and this has the
best quality
>I remember that the C64's like the VIC-20 would drop you at the prompt even
>if you had nothing attached, and didn't need any kind of boot floppies. Do
>I need some kind of boot disk for this beast?
Nope. unless you want to run CPM
>I gather a CGA monitor will work, so I guess I should dig out one of the
>old Mono-CGA monitors I've got in storage.
shore will.
>
>The next question would be, is it worth trying to repair a C64's power
>supply? I got two of them yesterday, both powersupplies are dead. It
>looks like the 5V line is shorted to ground. I did get a copy of the Old &
if it is potted, NOPE. some are unpotted and can be fixed.
>New style users manuals, and a copy of "Troubleshooting and Repairing your
>Commodore 64" yesterday (I love Powells Technical Books!) so I've got some
>documentation. It's been too many years since I worked as an Electrician,
>so my skill level is pretty low (wasn't very high to begin with, which is
>why I switched to computers).
>
I have these manuals too and I must say that it leaves no tern left unstoned.
> From: "Zane H. Healy" <healyzh(a)ix.netcom.com>
> Subject: Some Commie questions
> My main question is on the C= 128, along with all the other stuff I picked
> up, I got a Commodore 1702 monitor
(good composite/Split Composite monitor, ususally JVC or Toshiba Guts)
> and a couple 1541 drives. I've got the
> drive attached, and the monitor hooked up via a RF cable (I guess that's
> what it's called)
>through the front connection (This works for the Amiga 500 I also got yesterday).
The jack on the front is RF output.
> Anyway, I power the thing on, it "buzzes" the drive like it's expecting to find something,
> and I don't get anything on the display.
When a 128 boots up it will attempt to 'boot' whatever disk is in the
drive. A boot disk isn't necessary unless you want to use the CP/M mode
of the 128.
To boot the 128 into 64 mode hold down the Commodore ket as you turn it
on, release and you will be rewarded with a 64 bluescreen. Otherwise it
will boot into 128 mode, either 40 or 80 columns depending how you have
the 'columns' key locked.
> I remember that the C64's like the VIC-20 would drop you at the prompt even
> if you had nothing attached, and didn't need any kind of boot floppies. Do
> I need some kind of boot disk for this beast?
Only for CP/M.. It's a good version too!
> I gather a CGA monitor will work, so I guess I should dig out one of the
> old Mono-CGA monitors I've got in storage.
Only in 80 column mode, the 128 has an RGBI port for that. If you have
no color RGBI monitors you can always fasion a composite monochome cable
by connecting to pin 7 (monochrome) and pin 1 or 2 (ground) to an RCA
plug, that pin was designed for monochome composite output.
The best (low cost) configuration is to have the 128 hooked up to the
1702, with the 40 column split/composite & audio plugged into the back
and the monochrome 80 columns in the front. The quality of video using
a proper (split composite) video cable in the back of the 1702 is
excellent, I highly recommend it!
> The next question would be, is it worth trying to repair a C64's power
> supply?
No. Unless you like chipping away Epoxy resin.
> I got two of them yesterday, both powersupplies are dead. It
> looks like the 5V line is shorted to ground. I did get a copy of the Old &
> New style users manuals, and a copy of "Troubleshooting and Repairing your
> Commodore 64" yesterday (I love Powells Technical Books!) so I've got some
> documentation. It's been too many years since I worked as an Electrician,
> so my skill level is pretty low (wasn't very high to begin with, which is
> why I switched to computers).
> Then there is the Amiga 500. About a month ago, I'd picked up a copy of
> "Bards Tale" for the Amiga, so I know it works. Problem is I don't have a
> copy of the two floppies that came with the computer originally (also got
> the manual for this at Powells). I think I've got the Kickstart 1.2 ROMs
> (it has a 1.2 on the screen when asking for the Workbench disk).
That is Kickstart 1.2 allright. Kickstart 1.3 or later would be better
because they have hard drive autoboot coding and 2.0+ is more compatible
with recent Amiga software.
I have the 1.2 Workbench and Extras Disk around here somewhere... :)
> Where can
> I get the disks? I don't suppose it's like the Apple IIgs software that
> you can now download.
The hard part would be getting it on the right format of floppy...
> The second Amiga question would be, is it possible to hook up Apple IIgs,
> or Macintosh 3 1/2" external floppy drive with a Amiga? I somehow doubt
> it, but...
Yes and no... Yes, there are plans for hooking up Macintosh 3.5" floppy
drives to the Amiga, BUT, they are used only for the Macintosh Emulators
for the Amiga (BTW the Amiga 500 can run a Mac Plus Emulator at just
about speed.)
> Thanks,
> Zane
>| Zane H. Healy | UNIX Systems Adminstrator |
>| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
>| healyzh(a)holonet.net (alternate) | Mac Programmer |
>--
Recap, I have the Amiga Disks and also have a split-composite cable to
hook the 128 to the 1701 (for the best 40 column output).
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Visit our web page at: http://www.goldrush.com/~foxnhare/
Call our BBS (Silicon Realms BBS 300-2400 baud) at: (209) 754-1363
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
At 09:35 PM 7/12/97 +0000, you wrote:
>>
>Yes, I was experimenting with lots of hds/models/brands which I got
>some experience with them. If you have any questions about hds,
>floppy drives, fire yours to me. :)
>
>Jason D.
>
Hello there, I run a fileserver that has 2 ST-225 20 meg drives, and 1 NEC
420 meg IDE drive, this system runs 24/7, and has been running for 2 months
continuous now. My question is what is the life expectancy of these drives,
it is often said that the ST-225 series are not reliable, however they
continue to run strong. also these things run so hot that you can fry an egg
on it! :)
In message <Pine.SUN.3.91.970714101129.4470B-100000(a)crl5.crl.com> classiccmp(a)u.washington.edu writes:
>
> I saw an interesting relic in the thrift store the other day...and IBM PC
> "Expansion Chassis" (I believe that's what it was called). It was
> basically an IBM PC case with two full height hard drives instead of
> floppy drives. It's model number was 5161 (if I recall correctly).
> Didn't bother with it, even though it is kinda unique.
Ah yes, the 5161...
It is/was a device for adding 6 more slots to a PC, PC/XT or Portable-PC
(basically any of the 8-bit bus system). The 5161 itself was a PC/XT cabinet
with an 8-slot passive backplane (OK, there was a 14.? MHz oscillator in
there) and a standard PSU. There were a pair of cards (the 'extender' and the
'receiver') and a 62 pin cable that linked them. You put the extender into one
slot of the 'host' system, the 'receiver' into the passive backplane, and linked
them together. You could put I/O or memory cards (although not graphics cards
AFAIK) into the remaining slots of the 5161.
One problem with buying one of these second-hand is that the extender card (and
often the cable) is almost always missing - it's been left in the host. And that
card is difficult to find.
Schematics, etc are in Volume one of the Options and Adapters TechRef.
> Sam
-tony
At 11:45 PM 7/13/97 GMT, you wrote:
>GPIB = General-Purpose Interface Bus. Aka IEEE-488, and very similar to
>HPIB (= Hewlett-Packard Interface bus). HP were the company who designed it,
>but it turns up on all sorts of machines.
It's *the* bus used for disk drives, tape drives, printers, etc. for classic
(and, to a lesser extent, spectrum) HP 3000 minicomputers. Trust me, I've
got a basement full of 'em. (Bought my 3000 to use -- it's what I do for a
living.)
Also, if I'm not mistaken, the Commodore PET's used IEEE-488 for disk
drives, as well as lab stuff. I'm pretty sure I've got an IEEE-488
interface for the VIC-20 around somewhere.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
sinasohn(a)crl.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
At 02:11 PM 7/13/97 -0800, you wrote:
>up, I got a Commodore 1702 monitor, and a couple 1541 drives. I've got the
>drive attached, and the monitor hooked up via a RF cable (I guess that's
>what it's called) through the front connection (This works for the Amiga
The c1702 is a very nice monitor. On the back is (IIRC) RGB connectors (or
composite? or something like that) but on the front is standard video and
audio in. As in, TV. If you hook up a VCR (with a tuner or cable
connection), you've got yourself a very nice TV.
A few years back, I set up a VCR and 1702 combo on one of those hospital
tables for my dad and he spent his time there watching movies (actually,
videos of a local teen theatre group --
<http://www.crl.com/~sinasohn/yptmtc/>). It makes for a very compact setup.
I would love to find one or two for <$10 and use them for exactly that.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
sinasohn(a)crl.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
At 10:34 PM 7/11/97 +0000, you wrote:
>Is the display looks like it was using same LED display, "hair thin"
>segments under the plastic lens?
That would fit with what I remember. If all the lights were lit up, it
would look a lot like this:
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
Only a little closer, vertically. The lights really looked like little red
hyphens.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
sinasohn(a)crl.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
At 09:24 PM 7/11/97 -0500, you wrote:
>In regard to your post about the old hand held football game... I
[...]
>believe it was the SAME one that was manufactured by Coleco, or a similar
I think the one I had was a Coleco or somebody like that, but I could be wrong.
>around. Just the other day, I was in a thrift store in Nebraska City, NE
>and they had a pile of 'old' handhelds. I didn't have time to look through
>it close, though.... but I'm darn sure they did have a football game or
>two though. I'll go back and check it out for you, though. Oh, while were
That would be fantastic! I don't know what they sell for now, but I can't
imagine it would be bank breaking. Thanks!
>on the subject of old football games.... how about those darned magnetic
>full-field table football games they used to make?? Do they still exist?
I know what you mean, but I never had one. I doubt they still make them;
Everyone plays Joe Blow Football '97 on the Super Nintendo nowadays. (My
girlfriend's brother does anyway.) I can't even say I've seen one recently.
The Musee Mechanique at the Cliff House here in San Francisco probably has
one (and other, even older games too!) If you're ever in the City and like
that sort of thing, definitely stop in. They have modern games as well as
old stuff.
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
sinasohn(a)crl.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California http://www.crl.com/~sinasohn/
Hello, all:
I'm trying to track-down a mod that Tandy on the Expansion Interface. On one
of my early EIs (SN# 000352), there was a 6-pin DIN modification, which
someone at one time told me was to correct some erratic signal problems.
So, I called Tandy and ordered the EI service manual, but it only applies to
the "new" PCB version (units with SNs 035000 or greater). Does anyone have the
schematics to the original one and can check pin functions?? Internally, the
board is labelled "1700077-C", does not have the green conformal coating, and
has the RAM chips right next to the power supply section.
Mod 1 is on IC Z17 (LS157), pins 1 and 8 (GND)
Mod 2 is on IC Z24 (LS32), pins 4 and 7 (GND)
Mod 3 is on IC Z22 (LS367), pins 12 and 8 (GND)
Matching the old ICs and pin numbers to the new schematics produces the
following:
Mod 1 is for the MMUX line, Mod 2 is for WR* and Mod 3 is for INT*
Can anyone verify this?
------------------------
Rich Cini/WUGNET
- ClubWin Charter Member (6)
- MCPS Windows 95/Networking
Message text written by Sam:
>I figure total shipping costs will be $4 for a single unit, $5 for a
couple, etc. Not sure exactly.
I realize the shipping costs may not be what some people bargained for so
at this point I would ask that if you want to or need to back out, please
do it soon.
I am going to try and negotiate a lump sum for the total units that will
hopefully bring the cost per unit to $7. That's what I'm shooting for.<
I don't know why anyone in their right mind would back out. You said
originally $10 per unit, and if the above figures work out, that would end
up $12 for a single unit delivered; not bad at all. In fact, for the folks
who asked for two, the above figures would product $19 delivered, CHEAPER
than you originally said.
Still, you're left doing an awful lot of packaging, etc. You might at
least want to build in $1-$2 a unit "profit" just to compensate for all
your time and effort. On 400 units, that would at least get you a few nice
dinners! Please accept our thanks for all your work on this.
Gil Parrish
107765.1161(a)compuserve.com
In a message dated 97-07-14 11:38:57 EDT, you write:
actually, i've heard that novation applecat modem was desired by the
hacker/phone phreak crowd because of it's abilities. i think it could emulate
the dialing tones and do dtmf to make free phone calls. anyone have any
correct or detailed info about this?
<< >> I'm not doing it on purpose, but I find myself unable to let go of this
>> Novation CAT modem that I dredged up a few years ago...
>
>Hmm; I just picked one of these up with an incomplete Apple ][plus system
>that I haven't yet had time to muck with, short of cleaning it up a bit.
>What's special about it?
Absolutely nothing. It's a standard 300 baud modem.
Roger Ivie
ivie(a)cc.usu.edu
>>
david
->I'm pretty sure that these aren't host adapters; I think they're
->controllers in the traditional SCSI sense. (i.e. you sandwich
->them between the SCSI bus and a MFM or ESDI drive.)
->
->> One is a WD-1000-05, one's a WD-1000-50, and a WD-1000-TB1. If
->> anyone has docs for these (or can tell me where to get them) I would
->> really appreciate it.
Tim,
They may be host adaptors depending on the suffix they can be host or
SASI (pre-scsi).
I know the 1002-05/hdo is host.
Allison
->Here's a real classic for ya. I'd have killed for a system like
->this one, but married life, no room, no time, blah blah blah . . .
->Anyone have a use for a
->Motorola 6800 Exorcisor
->System? This is a real
I have the granmother to that the 6800D1 board. If it has a 6809 it's
not as old as one with a 6800!
Delopment systems are real collectable as they are fewer in numbers.
Allison