<Almost let an error slip by there, the IMSAI dates to the end of 1975,
<November I think, the first ad was in the December 75 issue of Popular
<Electronics, along with the Processor Tech VDM-1 video board. We had
<one running in the lab by Xmas 75, the short motherboard (12 slot, IMSAI
<dropped it early in 76), 8080 CPU and 4K static ram (1K installed), all
<for only $429 in kit form.
Which is why I said "more like 76". actually I have the Jan 1975 PE with
the Altair on the fron which predated the IMSAI. That summer IMSAI
announced the IMSAI. FYI by December 76 I would have over 11 months of
operational experience with my altair... and wishing I'd gotten a SOL or
IMSAI!
Speaking of IMSAI I have a IMP-48 (8035 cpu) which was also made by IMSAI
as a SBC for control apps and low cost computing. I'm seriously looking
for a manual. I've had this board since 81 sans book (It works and I can
run it, even preserved the eprom!). The dates on the parts suggest late
78 manufacture.
Allison
Almost let an error slip by there, the IMSAI dates to the end of 1975,
November I think, the first ad was in the December 75 issue of Popular
Electronics, along with the Processor Tech VDM-1 video board. We had
one running in the lab by Xmas 75, the short motherboard (12 slot, IMSAI
dropped it early in 76), 8080 CPU and 4K static ram (1K installed), all
for only $429 in kit form.
Jack
<[Everyone predates the PC, except for me...]
<I'm from 1978, same year VAX was invented.
<The PC is from 76, right? I'm not too far off...
<-------
Kids....
The PC as in IBM PC was more like 1981... 76 was more like imsai.
Allison
I've got an Altima One computer (286, iirc -- it's at home) with a Conner
CP-3044 (again, iirc) hard drive.
I got the specs from the Hard Drive Bible for the drive, and went into the
CMOS set up to set it up. No problem so far. After scanning through the
predefined drives without success, I, of course, set it to type 47 -- user
defined. Still no problem.
Now comes the problem. I can't for the life of me figure out how to get to
the Cyl/Sec/Heads/etc. fields to enter the appropriate numbers.
If anyone has any suggestions....
Also, if anyone has any info on Altima (other than that it's a car sold by
Nissan) I'd love to hear about it. Thanks!
--------------------------------------------------------------------- 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/
What exactly does alignment entail? What part is getting misaligned?
Does this happen to any other type of drive (CD-ROM, HDD,etc.)
>> > It's better to get the right alignment disk, though
>> >
>> With the current price of fdds so low, it's hard to justify buying
something
>> that I would rarely use.
>
>Probably true for PCs, although I've found _new_ cheap fdds to be
>misaligned. I check them befroe installation, you see.
>
>Definitely untrue for classic computers :-), where you either want to
>keep as many parts original as possible, or need a floppy drive that's
no
>longer made e.g. 80 track 300 rpm 5.25". Yes, some 1.2Mbyte drives
_can_
>be kludged to rotate slower, but it's not always obvious what to do.
And
>service manuals for cheap fdds are not available.
>
>> > Are you sure? Putting 12V where 5V should go is a bad idea, and I
wasn't
>> > aware that Atari drives had the connector backwards.
>> >
>> Yeah this is pretty well documented in the Atari threads. This isn't
true for
>> all brands however but I've never heard of any voltage conflicts.
It's a 4 pin
>> connecter and I wasn't aware of it also having 12v available on that
connecter.
>> Apparently most fdd brands will work 720 or 1440 but HD is not
available
>> without a modification, I just got unlucky with the one I bought.
>
>The standard pinout of the 4 pin power connector (both 5.25" and 3.5"
>types) is ground on the middle 2 pins and +5V, +12V on the outside 2.
>Some 3.5" drives (but by no means all!) are +5V only, and the +12V pin
is
>unused. My ST is hard to get to, and I don't have a service manual, so
I
>can't check to see what it does.
>
>> lwalker(a)interlog.com
>
>-tony
>
>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
IBM publishes a CD known as the "white pages" or consultants guide which
covers a large varriety of equipment that can be searched by"machine type" or
text string. I will follow up with a contact # if I can find it. The drawback
with this list is that as things get older they are dropped off the list. By
the way, the 3089 is a check sorter used in LARGE banks. I deal in IBM
mainframe stuff and can help with i.d.'s if you need it. I am looking for a
listing of FRU's (field replaceable units) or part numbers in a digital
format. If you know of anything like that available, I would appreciate it if
you could pass it along.
I looked up some useful info (though I never used it) recently for an
old Tandy pin printer at their website. It was exceptionally complete
and very helpful, including drivers if I remember right. tandy.com? if
not, search. Sorry if someone else answered this earlier.
Tom Penington-- outreach(a)sufia.net
Do you mean the Boston Computer Museum specifically, or someplace
else? I find it hard to believe that a computer museum would do
something like that!
>machines, I'd make sure that _no_ rare/classic computers got anywhere
>near that museum!
>
>Is it just me, or are most museums clueless when it comes to electronic
>exhibits? I've come across a museum that refuses to complete its PDP8
as
>the 2 cards I offered them that they were missing were made a few years
>after the the machine itself. This is a machine that was in use and
taken
>out of service BTW, so it's unlikely that all the cards were original.
>Another collection I know about has managed to misplace a PDP12, a
>PDP11/70 and all the printsets for them. Losing a board I can
understand,
>but 6' racks???
>
>>
>> One question though, wasent the Xerox 820 basically the same as the
Alto?
>
>Only in the sense that both were computers :-)
>
>They had different CPUs (z80, as against a custom 16 bit thing), mass
>storage (the Alto almost certainly had a hard disk), video (the Alto
was
>bitmapped), keyboad, OS/user interface, etc.
>
>-tony
>
>
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
On 31-May-98, Joe <rigdonj(a)intellistar.net> wrote:
> Hey, that really looks great! I heard a while back that IBM was going to
>post all of their patents on the net. Now if HP will just do the same!
The IBM Patent Server (http://www.patents.ibm.com/) contains details and images
(at up to 300dpi) of the most recent 23 years of US patents, not just IBM's
own. You can easily search for all HP patents using the Boolean Text Search
facility.
-- Mark
I'd like to send a message to all the members of the group, but I don't
know how. Could you please send this message:
If anyone in the group has an Apple Lisa that they're willing to sell,
please contact me at icyblackhand(a)home.com.
Thanks
Mike
... and then email me and tell me how to do it, that would be great.
Thanks a lot.
P.S. Please put the subject as LISA
Thanks a lot again.
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
Hi.
I found an Apple RGB monitor---the one with the electric tilt
mechanism---at a thrift store the other day. It was styled like it
belonged to some sort of older Apple ][ but I don't know which of them
came with RGB output besides the //gs. Certainly not my ][plus!
So what's the story on this beast and what did its DB15 connect to?
ok
r.
In a message dated 98-06-02 15:58:47 EDT, you write:
<<
I found an Apple RGB monitor---the one with the electric tilt
mechanism---at a thrift store the other day. It was styled like it
belonged to some sort of older Apple ][ but I don't know which of them
came with RGB output besides the //gs. Certainly not my ][plus!
So what's the story on this beast and what did its DB15 connect to? >>
i have one also but i dont know anyway of testing mine. i think its called an
applecolor 100 rgb monitor or something like that. supposedly it was very
expensive when new. the apple /// is able to run it from what ive heard, but
my /// isnt working right either. it can be used on a //e with the appropriate
adaptor card. anyone know if it's analogue or digital rgb? i never got an
image on mine when i tried to connect it to my //c and laser128.
david
In a message dated 98-06-02 15:57:21 EDT, you write:
<< > And while we're on the subject, has anyone figured out how to use a
> standard PC/Teac fdd with a mac? >>
I dont think it would be possible since the mac varies the drive speed to put
more information on the disk. if it were possible, it would be a nonstandard
format.
david
On Mon, 01 Jun 1998 14:49:39 rigdonj(a)intellistar.net remarked:
> Oddly enough a lot of the HP stuff is spec'd to run on 50 to
> 440 Hz. I'm not sure why unless it's to allow it to also be used
> in aircraft but that doesn't seem likely.
Shipboard applications are frequently run at 440 Hz as well as
aircraft; it's quite common in military environments as it keeps the
transformers small. Actually, I believe it's 400 Hz, not 440, but
whats a few ticks between friends?
On a similar note, ferroresonant transformers can do some very
bizarre things when offered a mains frequency they weren't designed
for. DG's Eclipse S/230 uses a single resonant transformer, rectifiers,
and filter caps for its power supply and little else. The specifications
call for a mains frequency deviation of under 1/2 Hz in either
direction. However, if the frequency is good, the regulation that
the supply gives is quite remarkable.
______________________________________________________________________
| | |
| Carl Richard Friend (UNIX Sysadmin) | West Boylston |
| Minicomputer Collector / Enthusiast | Massachusetts, USA |
| mailto:carl.friend@stoneweb.com | |
| http://www.ultranet.com/~engelbrt/carl/museum/ | ICBM: N42:21 W71:46 |
|________________________________________________|_____________________|
>> I took out from the library a sort of collection: 20 years of byte
>> with some historic articles, ads ,etc. from BYTE's point of view in
>> 1994. I liked the timeline, but the articles are very boring and
>> technical.
>Hey - I think you'll find that most of us liked the "boring and
>technical" articles better than the drivel they've been
>publishing since the mid-80's !
I build one of those projects from BYTE in about 1984. A project for the
Commodore 64.
It was just two precision resistor networks connected through
CMOS drivers to the address lines of the C64. One network for
the lower 8 address lines and one for the upper 8. When the two
networks were connected to the XY inputs of a oscilloscope, you
had a 256 by 256 pixel display of where in memory the 6510
was executing.
I was making my living breaking the protection on disk software
at the time and this cartridge came in real handy for determining
where code was being loaded into memory.
I also started writing a TIC-TAC-TOE game for use with the
cartridge. The program would place JMP instructions in different
parts of memory to draw the TIC-TAC-TOE squares, Xs,and Os on
the oscilloscope. Sort of a vector graphic version. I had alot more time
on my hands back then.
=========================================
Doug Coward dcoward(a)pressstart.com
Senior Software Engineer
Press Start Inc.
Sunnyvale,CA
Curator
Museum of Personal Computing Machinery
http://www.best.com/~dcoward/museum
=========================================
I have five Casio calculator catalogs for sale or trade for ?. All are
color catalogs and are in excellent condition. 1985, 1987, 1988, 1990 & 1991.
E-mail me privately with any questions or offers.
Joe
I have the following Commodore stuff for sale for the best offer. E-mail
me privately with your questions and offers.
Joe
Commodore Vic 20
Commodore Sargon II chess game cartridge with manual
Commodore Gorf game cartridge
C2N cassette deck
2 Commie joysticks
Commie 1520 printer
V 20 power supply
V 20 TV modulator
Slik Stik joystick by Suncom (for V20?)
Volks Modem 6420 (for V20?)
Vic modem 1600
At 03:12 PM 5/28/98 +0000, you wrote:
> On a related note, I have 3 Atari STs all with failed fdds. Any tips on
>re-alligning these with-out the rather expensive reallign equipment ? Quite a
If they're the later models with the rectangular eject button in the normal
place (rather than earlier models with the parallelogram? (/___/) button)
you can just replace them with any old 720K drive.
Other than that, you can use external drives; there should be (somewhere on
the web) a diagram for making the FDD-to-ST cable. Connectors are
available. (Or you can buy a cable from BEST Elect. in San Jose(?) or
elsewhere.)
And while we're on the subject, has anyone figured out how to use a
standard PC/Teac fdd with a mac?
--------------------------------------------------------------------- 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/
At 06:46 PM 5/29/98 -0700, you wrote:
>> 2)It mentioned a "new input device" that was before the Xerox machine,
>> to be used alongside the mouse, was flexible but required training.
>> What was it?
>
>That probably referred to the "chord" keyboard. It allowed you to type
>with one hand.
I remember a PC keyboard replacement that was a one-handed keyboard; it
used combinations of buttons to replace all the individual letter keys. I
remember thinking it was a good idea, and could be used perhaps (or
expanded) for other languages like chinese.
Anyway, I seem to remember that it was supposed to be easy to learn. Was
it? was it the "Chord" keyboard Sam mentioned, or were there others? Are
they still available? Is there any advantage?
I'm thinking that it would be a good option for situations where a) space
is at a premium (laptops) or b) one's hands are engaged elsewhere. (No, I
wasn't thinking of *that*! (I'm not that much of a nerd!) I was thinking
of vehicle/equipment control sorts of things.)
--------------------------------------------------------------------- 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/
At 07:55 PM 5/28/98 -0700, you wrote:
>The terminal acts as a buffer for the data, not for the keyboard. The
>keyboard is used to make changes to the data in the buffer and
>initiate the transfer of the changed data back to the 3000. The
>keystrokes themselves don't get sent to the 3000, only the edited
>data.
It's not a dead concept, either. Wanna see it in use? Go to
<http://www.sinasohn.com/clascomp/specform.htm>.
The form (aka web page) is downloaded to your terminal (aka browser), you
enter your data, make changes/edits, and then transfer the data (aka
submit) to the host system (aka web server).
Same thing, only with prettier graphics and much slower.
--------------------------------------------------------------------- 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/
Well, I'm in, I'm excited :^) , and I'm clueless :^( Is there any kind of
RSX-11M primer online anywhere? So far I've figured out "TIME" and "DIR"
:^)
What I'd really like to do is transfer the system from the RL-02 pack to
the /73's internal Hard Drive. I'd really like to slim the /73 down, and
the RL02 is more than twice as big as the /73 :^)
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
| For the collecting of Classic Computers with info on them. |
| see http://www.dragonfire.net/~healyzh/museum.html |
YAHOO!!!! Thanks to the bootstrap that Tim posted I just booted one of my
SMS-1000's off of a RL-02. Turns out it's running "RSX-11M 4.2 BL38B", on
the down side I've no idea what the login/password are :^(
BTW neither SMS-1000 that I've got has boot ROM's that support a RL02. Not
surprising since their S/N's seem to be sequencial :^)
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
| For the collecting of Classic Computers with info on them. |
| see http://www.dragonfire.net/~healyzh/museum.html |