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101090 discussions

by allisonp＠world.std.com

<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

27 years, 11 months

Imsai before 76

by peacock＠simconv.com

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

27 years, 11 months

Atari hard drives?

by allisonp＠world.std.com

<[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

27 years, 11 months

Atari hard drives?

by allisonp＠world.std.com

<> I predates the PC! I do I do I do, I do. So does the ST506 interface! Allison

27 years, 11 months

Clueless Museums (was: Final Xerox Star demo)

by icyblackhand＠hotmail.com

do any of you have a Lisa, if so, I'll pay $100 or less. Thanks Mike

27 years, 11 months

Setup HD?

by sinasohn＠ricochet.net

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/

27 years, 11 months

Ressurecting FDDs (was Original IBM PC (was Re: Prices to pa

by maxeskin＠hotmail.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

27 years, 11 months

ibm part numbers

by Mini7101＠aol.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.

27 years, 11 months

tandy printer

by outreach＠sufia.net

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

27 years, 11 months

Final Xerox Star demo

by maxeskin＠hotmail.com

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

27 years, 11 months

IBM stuff

by mark_k＠iname.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

27 years, 11 months

More Commodore stuff for sale

by icyblackhand＠hotmail.com

How much for the VIC 20? MIKE

27 years, 11 months

HELP!!!!!!!

by icyblackhand＠hotmail.com

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

27 years, 11 months

Apple ][ video

by red＠bears.org

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.

27 years, 11 months

Apple ][ video

by SUPRDAVE＠aol.com

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

27 years, 11 months

Ressurecting FDDs (was Original IBM PC (was Re: Prices to p

by SUPRDAVE＠aol.com

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

27 years, 11 months

What is it called when the 60hz line power becomes something else?

by crf＠stoneweb.com

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 | |________________________________________________|_____________________|

27 years, 11 months

Remembering BYTE acticles

by dcoward＠pressstart.com

>> 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 =========================================

27 years, 11 months

Casio Catalogs FS

by rigdonj＠intellistar.net

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

27 years, 11 months

Commodore stuff for sale

by rigdonj＠intellistar.net

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

27 years, 11 months

Ressurecting FDDs (was Original IBM PC (was Re: Prices to pa

by sinasohn＠ricochet.net

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/

27 years, 11 months

Insanely Great

by sinasohn＠ricochet.net

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/

27 years, 11 months

Processing data in blocks

by sinasohn＠ricochet.net

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/

27 years, 11 months

RSX-11M Primer?

by healyzh＠ix.netcom.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 |

27 years, 11 months

PDP-11/73 Boots!!!!

by healyzh＠ix.netcom.com

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 |

27 years, 11 months

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