test-drb

test-drb@ccmp.vtda.org

101090 discussions

by sethm＠loomcom.com

I have one here that I'd gladly part with. In the original box, with the original documentation and cassettes. The original box, it should be noted, has been written all over and used to mail the thing hither and yon, so it's not "pristine" to say the least. I don't want a lot of money for it, but I'll accept little offers to cover the hassle of mailing it, plus postage. The only reason I'm getting rid of it is because I'm frankly not that interested in RadioShack stuff :) So hopefully it will end up in a nice happy friendly collector's home being tinkered with instaed of sitting on my shelf collecting dust. -Seth Morabito Computer Historian, DEC Enthusiast, Weirdo Send comments, questions, and offers to sethm(a)loomcom.com

28 years, 2 months

Recent Brother's Find, More PET info & 2.8mb floppy

by foxnhare＠goldrush.com

Last week my brother found me something (usually I am the one finding 'stuff' for him. An overhead projector LCD unit! (circa 1987 so it's on-topic). It's a monochrome unit that approximates colors via greys but bhe really cool thing about this display is it's inputs: RGB and Composite Video! So next time I drag one of my Commodore 8-bits for a demo I have a an overhead display unti that works with it! (tested it with a Commodore 128 -in 64 mode-, the screen just fits in the visible area.) (manufacturer Computer Accessories) 00100111101010010010010011100100100001110010111001001001 Andre Fachat, another Commodore PET enthusiast has just opened his 'PET Index'. Much of it is on his latest toy the CBM 8296 (the last of the PET line -I think even after the SuperPET-) includes links to other valuable PET information (such as my PET FAQ). A good place to bookmark if you have any interest in PET computers: http://www.tu-chemnitz.de/~fachat/8bit/petindex/petindex.html 00100111101010010010010011100100100001110010111001001001 As far as anyone ever seeing a 2.8 mb floppy drive, yes, a friend of mine has one, for the Commodore 8-bit! Creative Micro Designs (CMD) a thriving Commodore peripheral, expansion, and accererator manufacturer for the Commodore 64/128 had used them for the FD-4000 series disk drives. The drives use ED (extended density?) disks (the high density hole is farther down than on HD disks and there is an ED on the casing.) Unfortunately CMD had to drop the line a couple years back due to the drive manufacturer dropping the model as there was not a big enough demand for them. :/ -- -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363 Visit my Commodore 8-Bit web page at: http://www.goldrush.com/~foxnhare/commodore.html -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-

28 years, 2 months

TRS-80 VOXBOX?

by allisonp＠world.std.com

<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. It speaks, classic mechanical sounding speech. Rather fun to play with. Allison

28 years, 2 months

DEC 11/70...

by allisonp＠world.std.com

<The accompanying lab workbook for the _The Art of Electronics_ is <worth obtaining for getting the "Write-Only Memory" datasheet, too. <My favorite graph on the data sheet is "Number of pins remaining <vs. number of socket insertions". (Wasn't this originally published <in an April 1 issue of _Electronics_ in the 70's?) I got my copy of that data sheet as an official looking Signetics data sheet along with the data books circa 1972. It was the EIA/IEEE spec'd spigot in the lower right side of the device logical drawing. IT went well with the ISO bit bucket. ;) Allison

28 years, 2 months

math coprocessors

by pete＠dunnington.u-net.com

On Apr 6, 17:15, Max Eskin wrote: > Subject: Re: math coprocessors > [Autocad not requiring math coprocessor] > Well, version 12 for Dos, which is what I have, seems to require it. > It refuses to start up, quitting with "80x87 required, but not > present". Whoever said it doesn't, maybe you have a lower version. > If so, which and what's it like? I would certainly be interested in > an older version, such a 7 or 8. Even fairly old versions require a maths copro. Some of my then-colleagues at Acorn Computers were involved in negotiations with Autodesk in 1987, to get it ported to the ARM architecture. AD ported Autosketch quite quickly, because it doesn't need a maths copro, but they refused to port AutoCad, because they insisted a maths coprocessor was essential (despite the fact that the software routines available outperformed some contemporary maths processors). -- Pete Peter Turnbull Dept. of Computer Science University of York

28 years, 2 months

Looking for info on old SuperMac video board

by jruschme＠exit109.com

(This is a follow-up to an earlier posting, but with some corrections and further information.) I recently acquired an old Macintosh II. In it was an older SuperMac video board. Based on the pictures on Radius' web site, I have concluded that this is a Spectrum/8 (original), Part # STD9411, Assy # 1002689-0001. The label on the ROM reads: SUPERMAC TECH SPECTRUM D6 1002690-B 1986 According to Newer`s SlotInfo program, The card revision is 1.0B9 and has a part number of VGB-1. Per Radius' FAQ, I have tried holding down the OPTION key while booting, but never got the "round robin" video mode selection. I have also tried running SuperVideo 2.7.5 which tells me I must have ROM version 1.9 or later in order to select a monitor. Currently, the card seems to be "stuck" in what I assume is the default mode of 1016x768. So, does anyone have: 1) Info on how to get the card into other modes (pref 640x480 for now). 2) Setup software for this old a card. 3) Any info on support monitor resolutions and frequencies? Thanks in advance... <<<John>>>

28 years, 2 months

DEC 11/70...

by pete＠dunnington.u-net.com

> > 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

28 years, 2 months

List problems ?

by lwalker＠mail.interlog.com

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

28 years, 2 months

Dick Smith System 80 S-100 Expansion Connections

by Guerney＠uq.net.au

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

28 years, 2 months

from Cadnetix to IBM....

by aaron＠wfi-inc.com

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

28 years, 2 months

RS 102

by sinasohn＠ricochet.net

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/

28 years, 2 months

RL02 problem #1 resolved.

by DSEAGRAV＠toad.xkl.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. -------

28 years, 2 months

Summasketch graphics tablet

by maxeskin＠hotmail.com

> >> > 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 > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

28 years, 2 months

Nice Find

by maxeskin＠hotmail.com

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? ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

28 years, 2 months

Math coprocessors

by peacock＠simconv.com

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

28 years, 2 months

DEC 11/70...

by Philip.Belben＠powertech.co.uk

> 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.

28 years, 2 months

Old Data

by Philip.Belben＠powertech.co.uk

> 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.

28 years, 2 months

Summasketch graphics tablet

by maxeskin＠hotmail.com

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. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

28 years, 2 months

IMSAI woes

by sethm＠loomcom.com

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

28 years, 2 months

VT 131 FS

by rhblake＠bbtel.com

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* --------------------------------------------------------------------

28 years, 2 months

Stringy Floppy?

by wheagy＠erols.com

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

28 years, 2 months

Computer Garage - Virtual Garage Sale

by jimw＠agora.rdrop.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

28 years, 2 months

Nice Find

by maxeskin＠hotmail.com

>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 > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

28 years, 2 months

TRS-80 Model 1 monitor?

by allisonp＠world.std.com

<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

28 years, 2 months

Math coprocessors

by maxeskin＠hotmail.com

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. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

28 years, 2 months

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