- test-drb@ccmp.vtda.org - classiccmp.org

by ajp166＠bellatlantic.net

From: Eric Smith <eric(a)brouhaha.com> >According to its designers, the ALU on the 8080 is 4 bits wide, and >takes 2 cycles for an 8-bit add or subtract. Presumably it takes at >least 4 cycles for a 16-bit add or subtract. The 8080 takes so many >cycles for *anything* that it's not obvious what it does internally on >any given cycle. It's not. It's 8bit. the cycles are wastes on delivering status and fetching operands. You do multiple ops for 16bit adds/subs. What makes the 8080/z80 interesting is the acc has a intermediate carry for BCD ops. Allison

25 years, 7 months

1
0
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TCP/IP on eightbitters

by optimus＠canit.se

How many eight-bit micros are there with TCP/IP implementations? I can only think of the C64 and the MSX. For the C64, there are AFAIK two implementations. One is a "normal" C64 program, with some clients for telnet, IRC and FTP, IIRC. The other one is a UNIX look-a-like called Lunix, which will een handle ingoing telnet calls on a slip line. I believe both are available at http://www.heilbronn.netsurf.de/~dallmann/c64.html As for the MSX, the one implementation I know of is UZIX, which is about as close to an eight-bit UNIX you can get. Its homepage is available at http://www.dcc.unicamp.br/~adrcunha/uzix I've heard some talk about a TCP/IP project for the Spectrum, as well. Then there is the Ethernet card for the Apple II. Which protocols does it support? -- En ligne avec Thor 2.6. Amiga: (noun) The most technologically advanced computer that hardly anyone cares about. Use in sentence: "I wanted to buy an Amiga for its low price and great color graphics, but everyone else seems to be using IBMs or Macintoshes. So, to remain compatible with the rest of the world, I spent three times as much on a Macintosh and got only half the graphics capability of an Amiga."

25 years, 7 months

6
20
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Calling computer collectors in northern Europe!

by ekman＠lysator.liu.se

Fellow collectors, I am sending this message in the hope that some kind souls can help save at least parts of an attic-full of classic computers. The story is as follows: Several years ago, a computer company in Gothenburg, Sweden, bought the entire stock of the former Swedish Sord distributor (Sord was one of Japan's major PC manufacturers during the 80's). The contents of their warehouse were soon moved to an attic where it has been collecting dust until today. Now word reaches me that this company is in the process of moving and that if nothing is done quickly, the entire attic-full of computers may be thrown away. Trashed. Destroyed. I once made a partial inventory of the attic in question and it contains some 25 more or less complete Sord systems, plus a bunch of diskless PC workstations, plus printers, monitors, disks, keyboards, various spare parts and more software than a strong man can carry. They may decide to keep a few complete systems for historical reasons, but most will be lost unless something can be done. In fact, it may already be too late as I write this. If you live in northern Europe and if you want one or more of these systems and if you can drive a car to Gothenburg within the very near future then contact me as soon as possible. I have some close contacts at the company and will make sure that you get in touch. If there are any questions, I am of course willing to answer them as best I am able. /Fredrik Ekman PS. Please forward this to ayone you think might be interested.

25 years, 7 months

2
1
0 0

10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

On Nov 24, 18:34, Richard Erlacher wrote: > Does the '422 standard specify handshaking? Can you provide a reference, > or, better yet, a URL? Well, the standards document would be the definitive reference, but I only have extracts and references in books. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
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Fwd: HP 3000???

by cfandt＠netsync.net

Hey folks, Those of you who know HP3k gear, could you be so kind please contact Mr. Muller to assist? The 3000's are not in my range of knowledge at all, just some 9000/300's and the good ol' ancient HP250 machine. Must be how he found me. Wonder if he found one of you HP gurus thru the same "web" search? Please contact him directly as he's not on the list. Thanks much for your help! Regards, Chris -- -- > > >From mailnull Mon Nov 20 14:20:14 2000 > Reply-To: <chris.muller(a)mullermedia.com> > From: "Chris Muller" <chris.muller(a)mullermedia.com> > To: "'gcfandt(a)netsyngcg.net'" <cfandt(a)netsync.net> > Subject: HP 3000??? > Date: Mon, 20 Nov 2000 14:21:47 -0500 > X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) > Importance: Normal > > Hi, > > Saw your name on the web in connection with HP. I'm looking for information > on the organization of backup tapes created on an HP 3000. (We write PC > programs to read minicomputer tapes, and want to do one for the HP3k). Thanks > for any help you can give us. > > Regards, > > Chris Muller > Muller Media Conversions > <http://www.mullermedia.com/>http://www.mullermedia.com > 212-344-0474 > Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.antiquewireless.org/

25 years, 7 months

1
0
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10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

On Nov 24, 23:25, Tony Duell wrote: > > > > > I'm trying to think of any interface on the Mac that is in any sense > > > 'standard'. And no, I can't think of one... > > > > Their serial and printer ports are rs232 ports. their USB is entirely normal. > > The serial ports on any Mac that I've seen are not RS232. They have > differential data lines for one thing. And I believe that the RS232 > standard specifies a DB25 connector. The Mac serial ports are closer to > RS422 than anything, but they're not strictly RS422 ports either. Indeed. Wrong handshaking for RS422. And their DB25 SCSI isn't the same as the original PC version, and does not meet the spec laid out in the SCSI standard, so their SCSI is hardly a standard either. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

2
1
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intro and RML380Z

by pete＠dunnington.u-net.com

On Nov 24, 13:40, Paul Williams wrote: > John Honniball wrote: > > On Thu, 23 Nov 2000 18:47:12 +0000 (GMT) Tony Duell wrote: > > > > > > A 380Z _is_ a pile of boards and a case :-). Well, OK, there's a > > > PSU and maybe a couple of drives as well. > > > > Quite right! My machine is missing the drives, wiring > > loom, front panel, card cage and connectors. > > Oh come on, John. You've not got a 380Z. You've got a 19" cake tin. LOL! -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
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intro and RML380Z

by kebabthesheep＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > > > > The box in question is a RML-380Z-D model, with > dual 5 > > 1/4" drives, and I think, 32K RAM. It has two > video > > There is room for 32K RAM (2 rows of 4116s) on the > CPU card. Oh - must have miscounted :-/ > If you have > the RAM expansion card (which, as you imply is a CPU > board with the CPU > and many other chips messing and a different address > decoder PROM) then > you possibly have up to 56K RAM. I has an address *prom*? I thought it was purely TTL? I s'pose its hard to tell with all the pretty little coloured[1] splodges all over the socketed chips (presumably to aid the people who put the chips in...) > COS = Cassette Operating System, and is basically a > bootstrap loader (for > cassette or disk) and a machine code monitor. I figured that much out eventually :) > I should have a system disk somewhere, but it would > take some time to find > it. Kewl - any system disk, even a duplicate is good - at least one may work. > I also should have the COS user manual (giving > some of the calls, > etc) In what format? Electronic? (i.e. easily sharable?) > but I don't have the optional source lisitng of > COS (and FWIW, I'm > looking for it too). As soon as the <insert your own expletive> person who broke our lab's device programmer fixes it - i'll dump the COS roms. I managed to dump the disk rom, using an older programmer - but it wouldn't touch the older, mainboard devices - It complained of over-current. I suspect it was not intended to cope with *all* devices - unlike our really fancy new one - which is broke :( > Yes, or X to boot with the floppies swapped over > (the 'B' drive is A:). > The latter is useful if one drive decides to fail... How thoughtful of RML :) > There is an LED on the > floppy > > controller, it flashes with a kind of 'heart beat' > > pattern i.e. > Flash-flash--pause--flash-flash--pause > > Are you sure this is a standard RML disk controller? > I can't find any LED > on the schematics, and I don't remember there being > one when I looked > inside my machine. The standard disk controller is > one card that fits > onto the 50 way 'bus' ribbon cable, and which > contains a 1771 disk > controller (Single density only) and a 8251-based > serial port (device SIO-4) Um, no! I know nowt about this box - I'll check the disk controller very carefully tonight. Its software is certaining interesting - very wacky code, quite a bit of it polymorphic - just to hurt your brain :-/ The card *is* on the main bus, and is connected to the floppy and serial port. It is also stamped (C)RML, ISTR. I've a really nasty feeling, this machine has been a student project, and they used the floppy controller as a secondary cpu :) Should there be a mostek MT4802 (2Kx8 SRAM) in the socket above the eprom? It doesn't even occupy all the socket (which is suspicious) and the ROM does contain memory sizing routines...they're obvious :) I *really* hope not! Dave. [1] Appologies if you think I spelt it wrogn ;0 __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/

25 years, 7 months

8
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intro and RML380Z

by kebabthesheep＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > > > > > > --- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: > > Incidentally, you don't need to send me a private > copy of e-mail that you > post to the list. I read classiccmp :-) Apologies - a habit left over from another mailing list, where it is customary. > > OH! Something else that became obsolete before I > > started taking things apart...(I'm only 23) > > Wait until you come across 1702 EPROMs. They run > from a 14V supply, > conventionally called +5V and -9V (there is _no_ > ground pin on the chip). > Inputs and outputs are TTL-compatible wrt a 'ground' > 5V below the +ve > rail (so if you use +5V and -9V, the address and > data lines link up to > normal TTL). > > Programming 1702s is even more 'fun' and involves > taking several pins up > to quite high voltages... Mmmmm! Lovely stuff! I wonder if me old mucker from secondary school/uni still has that box of really old smelly eproms - i'll give him a call and find out... > > That would explain rather a lot. I'll have to > build > > me an eprom dumper then. > > I'll get one of them 24 bit (8255 based) ISA IO > cards > > from maplin (about 25 quid ISTR) and make one up. > > Seems reasonable. > Damn damn and triple damn! I just got the latest MAPLIN cataloge last night - they don't do the 8255 card anymore, they do a carp replacement - using TTL - costing, wait for it, 100gbp! They can *get lost* i'll build my own darned pc card - I wonder if farnell still do 'blank' ISA prototyping cards? I need to get on and build up my PCB making equipment again - so I can build myself, and other serious computer geeks, special cards :) How about a dual 8255 based card? 48 bit programmable digital IO anybody? Single density floppy controller? Oh! The list could be endless! > Since the COS ROMs are readable by the 380Z's > processor (unlike the > address decoder, say), you could presumably read the > ROMs by a little > program on the 380Z and squirt the data out of the > serial port. I could if I had any data on it :( > > > > > Are you sure this is a standard RML disk > > > controller? > > MB8877a which I believe is a 5voltonly WD1793 > > > > i.e. A double density controller. There are > obviously > > Yes... This sounds like a double-density card > alright. And it's a card > I've never seen and have no schematics or data on > :-(. > > Which means it may well need a non-standard system > disk as well, > something that none of us seem to have :-( :-(... > Damn! Foiled! Looks like i'm going to have to go with Dwight's (sp?) suggestion and write my own bios. That should get me back up to speed with the old Z80 again...i'll try any system disk anybody sends me anyway - I can alway find the correct controller card for them. I think it was Monsier Honniball who had some RML380Z bits... Dave. __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/

25 years, 7 months

5
8
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10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

OK, next question. I've acquired a few Asante FriendlyNet Thin Adaptors. These are little boxes about the size and shape of old Mac transceivers -- about 4" long, 2" wide, 1 1/4" thick. One end has an RJ45; the other has a BNC sticking out each side: ____________________ _ | | { } | |_|_|_ | | | _ _ _| | | | | |____________________| {_} Inside is a standard 5V-9V DC-DC converter, a standard ethernet 3-section transformer, and a perfectly ordinary DP8392 ethernet transceiver IC and the usual discrete components (diode, a few resistors, etc) I associate with an ethernet coax driver. So on the face of it, it looks like a line-powered 10baseT to 10base2 converter. Oh yes, one other thing: the BNCs are self-terminating; they have an extra contact set into the centre insulation (with nothing plugged in, there's 50 ohms across core and screen; with two plugs in, it's open-circuit). But it doesn't seem to work -- so what is it really? If it's any clue, they came from someone who's into Apple Macs. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

5
5
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anyone in switzerland?

by azog＠azog.org

Just saw this on comp.sys.dec. Sounds like a nice deal for someone in switzerland: From: Peter Mueri <MPe(a)pop.agri.ch> Newsgroups: comp.sys.dec Subject: FS: uVAX2000, PRO380, RD54, RZ58 Date: Fri, 24 Nov 2000 14:42:17 +0000 For cheap sale, pick-up preferred: 2 uVAX2000/VAXStation2000 1 VAXstation 3100/76, 1 DEC Professional 380 with Monitor/KB and P/OS Distro, RT11-Disk and docu 1 VAXmate PC, various replaement parts various DEC QBUS Cards 1 Rainbow PC with Stand 1 19" B/W DEC Monitor various Disks (RD54 MFM, RZ58 SCSI) Offers per Email please, details available from mpe(a)pop.agri.ch regards Peter, Switzerland.

25 years, 7 months

1
0
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intro and RML380Z

by kebabthesheep＠yahoo.com

--- John Honniball <John.Honniball(a)uwe.ac.uk> wrote: > > Mine has a passive terminator board which has space for a > UHF modulator, but the parts aren't installed. > Sounds familiar! > As for the disk controller, it has a WD FD1771, a Z80 CTC > (Counter-Timer Chip) and an 8251 serial chip. Also the > usual glue logic and some 1488/1489 drivers. > AHA! It _IS_ the old card. Just what I need to start using the box. I have the newer posher one, which we may not have software for. I still would like to get the newer card to work tho :) Dave. __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/

25 years, 7 months

1
0
0 0

DPS TBC I

by mgregory＠vantageresearch.com

I've just acquired a time-base corrector made by Digital Processing Systems, model VT-1000 (the original TBC made by DPS) for use with my Video Toaster. Unfortunately, I didn't get either a manual or the driver disk required. I've tried various Amiga and video-related newsgroups, but to no avail. Can any videophiles on the list help me with the following questions: - what are the 4 RCA jacks on the back of the card, in order from top to bottom? - what does the switch above the jacks do? - has anyone got a driver disk (for Amiga DOS) they're willing to copy? I'd happily pay shipping and a handling fee for a copy of the disk and/or manual for this beast (made in 1990, I believe, and thus just on-topic). Thanks! Mark.

25 years, 7 months

3
2
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Identify HP board?

by pete＠dunnington.u-net.com

On Nov 23, 22:34, jeff.kaneko(a)juno.com wrote: On Thu, 23 Nov 2000 23:54:35 GMT pete(a)dunnington.u-net.com (Pete Turnbull) writes: > > I've found an HP board, which has "HP 03812L" and then "98574-66513" > > on it. > > I think this is a part for an HP9000 system, more precisely a "68040 > > EMULATION PROCESSOR". Is this something you can plug in in place of > > a real > > 68040, and if so might it work in anything other than an HP9000? > Is this thing L-Shaped? If it is, then this is the 'l-board' > that goes into Hp 9000/375 (I have one of these sitting in my > garage). Yes, it is. About 7 1/2" by 8", with a 5" x 4" chunk cut out. > Anyways, many of these were swapped out in favor of a *real* > 68040 running at 25 or 33 Mc. HP used these boards because > (presumably) they had their 68040 system board laid out and > ready to go but Moto didn't quite have the silicon yet. > > SO they outfitted the 9000/375 with this kludge (that used a > 68030), and the later 380's were the same hardware with the > real processor installed, instead of the L-board. That sounds plausible. Thanks for the info. > I would be really curious to know if this thing functions > as an '040 in other systems . . . Well, if I get the chance, I'll try it. I wouldn't be too hopeful, though; partly because it's quite large, and partly because it's been lying around without any antistatic protection for months, and has been handled by several people in that time. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
0 0

10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

On Nov 23, 22:35, Richard Erlacher wrote: > It's been a long time since I last put together a coax board uisng a DP8392 > transceiver, but as I recall the 8392 needed relatively few external > devices. Its purpose, however, was to drive the coax. I don't believe > there's any need for it in a TP application. Well, no, you use a different transceiver IC for that, with a differntial output, differential input, and some capacitors for pulse-shaping. > In the classic ethernet/thinnet board design, there was a controller, e.g. > AMD 7990, a modulator/demodulator, e.g. AMD 7992, often with the digital pll > right in it, and a coax driver like the 8392, but, in AMD's case it was > another device with more pins and more external parts.. The > modulator/demodulator drove the AUI outputs, OR, if jumpered appropriately, > drove the DP8392. The DP8392 was also the most costly of the three or four > popular coax drivers, (AMD, Intel, National, and SEEQ) but it was worth it > because of its smaller package size and need for fewer external components. I have a few boards (at least one ISA for a PC, and some Acorn cards) which use the Intel controller and SEEQ. My experience (and that of some others I've talked to) is that the Intel/SEEQ combination is much less reliable than the AMD/National ones. It's also much harder to get the ICs for if you need to repair one. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
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10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

On Nov 24, 5:48, Eric Smith wrote: > > I've acquired a few Asante FriendlyNet Thin Adaptors. These are little > [...] > > So on the face of it, it looks like a > > line-powered 10baseT to 10base2 converter. > > No, it's just a 10base2 transceiver with a funky connector for the AUI > rather than a standard 15-pin D-sub. It has nothing whatsoever to do > with 10baseT. Thank, Eric, that's exctly the conclusion I came to in the end, but it's nice to have it confirmed. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
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10base2 / 10baseT (again)

by pete＠dunnington.u-net.com

On Nov 23, 18:07, Zane H. Healy wrote: > Actually these just came up on comp.os.vms, of all places, a few days ago. > Aparently Asante just used the RJ45 to connect them to their Ethernet card. > While it looks like it should be a 10BaseT-to-10Base2 converter it > apparently isn't. Thanks, Zane. Yes, having loked at some of the connections inside, that seems to be it. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
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VAX emulation

by azog＠azog.org

I was bored, so I was wondering if there are any VAX emulators. I found www.charon-vax.com which emulates a KA630. It'll install from the montagar CD on WinNT and Win2k. It won't emulate an RRD40 on Win9x. I'm going to be running VMS on my laptop :)

25 years, 7 months

13
17
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RS/6000 ATM cards

by lemay＠cs.umn.edu

I have some ATM network cards for RS/6000 computers. 100Mbps. If this is of value to someone, let me know what you offer in trade. -Lawrence LeMay lemay(a)cs.umn.edu

25 years, 7 months

2
1
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First personal computer nostalgia

by jeff.kaneko＠juno.com

On Thu, 16 Nov 2000 17:43:57 -0500 "Robert Stek" <r.stek(a)snet.net> writes: > ... and after that it starts to get too modern. But micros's have > always been a passion - even though I am a clinincal psychologist by > training, and I work in program evaluation in health care. Gee Bob, with the ESP program, and subsequent brainwave business, I thought fer sure you'd be a para-psychologist! :^) Who you gonna call . . . ? ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 7 months

7
10
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Identify HP board?

by jeff.kaneko＠juno.com

Pete: Is this thing L-Shaped? If it is, then this is the 'l-board' that goes into Hp 9000/375 (I have one of these sitting in my garage). Anyways, many of these were swapped out in favor of a *real* 68040 running at 25 or 33 Mc. HP used these boards because (presumably) they had their 68040 system board laid out and ready to go but Moto didn't quite have the silicon yet. SO they outfitted the 9000/375 with this kludge (that used a 68030), and the later 380's were the same hardware with the real processor installed, instead of the L-board. The SC140475RC50 is a 68030 (custom spec'd in some manner) running at 50Mc. I would be really curious to know if this thing functions as an '040 in other systems . . . Jeff On Thu, 23 Nov 2000 23:54:35 GMT pete(a)dunnington.u-net.com (Pete Turnbull) writes: > I've found an HP board, which has "HP 03812L" and then "98574-66513" > on it. > I think this is a part for an HP9000 system, more precisely a "68040 > EMULATION PROCESSOR". Is this something you can plug in in place of > a real > 68040, and if so might it work in anything other than an HP9000? > > It sounds plausible, since it has an SC140475RC50 (looks like some > kind of > processor?) and an XC68882RC50A (FPU) on it, as well as an MK4202P > (eh?), > some fast logic, some cache RAM, and a 184-pin "plug" that obviously > plugs > into something like a processor socket. I was given it for the > 68882, for > use in a Mac, but I'm wondering if it's better left intact... > > BTW, anyone know the difference between an MC68882 and XC68882? > > -- > > Pete Peter Turnbull > Network Manager > Dept. of Computer > Science > University of York ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 7 months

1
0
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Identify HP board?

by pete＠dunnington.u-net.com

On Nov 23, 16:03, Chris Kennedy wrote: > Pete Turnbull wrote: > > > BTW, anyone know the difference between an MC68882 and XC68882? > > When we were building accelerator boards for the Amiga we used to > get those all the time. The Mot rep claimed they were pre-production > parts, or more properly, parts which hadn't been subject to the production > acceptance criteria. > > Translation: They're the things that showed up when you ordered MC68882s > too early in the game... That would fit -- the one and only reference I found to the HP board number says it was superceded by another, similar board, suggesting this one is an early one. And why would anyone make a complex and presumably expensive 68040 emulator when you could just buy the real thing? Only if you couldn't yet obtain the real thing, I suppose. Thanks, Chris! -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
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Thicknet (was Re: BBS's)

by pete＠dunnington.u-net.com

On Nov 24, 0:00, Tony Duell wrote: > I believe there is a balun-type thing that lets you use a piece of > twisted pair cable in place of a piece of coax _for a 10base2 network_. > The signals on the twisted pair are not 10baseT, and you can't use it as > a converter. In particular if you want to link multiple machines together > with twisted pair you need _2_ baluns at each machine (linked up to a BNC > t-piece) and 2 pieces of twisted pair cable, one from the 'previous' > machine and one to the 'next' machine, just as you would with coax. Thanks, Tony. That's what I thought. In fact, at least one of the catalogues actually says their baluns are only to carry 10b2 over twisted cable. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
0
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Identify HP board?

by pete＠dunnington.u-net.com

I've found an HP board, which has "HP 03812L" and then "98574-66513" on it. I think this is a part for an HP9000 system, more precisely a "68040 EMULATION PROCESSOR". Is this something you can plug in in place of a real 68040, and if so might it work in anything other than an HP9000? It sounds plausible, since it has an SC140475RC50 (looks like some kind of processor?) and an XC68882RC50A (FPU) on it, as well as an MK4202P (eh?), some fast logic, some cache RAM, and a 184-pin "plug" that obviously plugs into something like a processor socket. I was given it for the 68882, for use in a Mac, but I'm wondering if it's better left intact... BTW, anyone know the difference between an MC68882 and XC68882? -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

3
4
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What is it ?

by lgwalker＠look.ca

I have a short 8-bit card with a strange mouse socket. It could be a Zenith card as I found it in an old Zenith PC case piled up inside with other cards which obviously didn't belong to the Zenith. It has a DE9 monitor connection with a mono/color switch below it and a port labelled "mouse" below that. It is a DIN with 9 staggered holes but smaller than your standard k-b socket and larger than a PS/2 or Mac one. Internally it has 2 game and one light-pen connectors. It's most significant chip is a 100pin surface mounted 6612. The only removable chip is labelled AM2764ADC, and 838AE9G. Most of the other chips are logoed GS. There is a # written with marker pen S88101035. Did Zenith have a proprietory mouse at some point or is this another beast entirely. I notice that most of the GS low-powered Shotsky chips are labelled some multiple of H eg: H10, H18, H38 etc. which makes me think Zenith/Heath. ciao larry Reply to: lgwalker(a)look.ca

25 years, 7 months

5
9
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Thicknet (was Re: BBS's)

by pete＠dunnington.u-net.com

On Nov 22, 21:50, ajp166 wrote: > >> AUI tranciever in a junk bin, but I've never seen 10BaseT-coax > converter > > the net at work uses a few of them, those are just baluns. I've never seen a 10baseT to 10base2 cobverter that was just a balun -- all the ones I've seen consist of most of two trasceivers plus a little gubbins between. Most of the baluns I've seen in catalogues only connect to one pair of an RJ45, but I have seen one in a catalogue that connected to pins 1/2 and 3/6. Does that really work? -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

2
1
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intro and RML380Z

by kebabthesheep＠yahoo.com

--- John Honniball <John.Honniball(a)uwe.ac.uk> wrote: > > > anyway - I can alway find the correct controller card > > for them. I think it was Monsier Honniball who had > > some RML380Z bits... > > Oh yes, 'twas I... > > Just the pile of boards and a case, as I recall. Taken > apart years ago by somebody else. Damn, why can't they > leave this stuff in one piece? > I wonder if there's a standard old single density floppy controller amongst them? I'm certainly interested in taking them off your hands... I've mailed a car-ready mate, so we can come up and collect the bits of suns cluttering your garage, but he has yet to get back to me (He does work for DERA so email access is an intermittent affair) Maybe i'll just try the telephone thing. Haven't used it a while - I wonder if it still works? Dave. __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/

25 years, 7 months

1
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Some cleaning to do

by russ＠rbcs.8m.com

I've gone full time self employment and a lot of what I've collected/stashed over the years is going to need to be gotten rid of to make room for working and to store supplies. Hopefully I can get some of what I have into it back on some things. Much of it is PC/XT to 486 era stuff and a lot of that is PS/2 related. Some of it is also Apple/Mac. As I go through the stuff and can determine what I need to get rid of I'll post it here. Right now I have to go through gobs of books and catalog them so I should have a list here soon. I'll also post much of it on my web page at http://rbcs.8m.com/saleslist.html once I can get it together. I'll have parts as well as whole machines. Right now I have a bunch od working PS/2 model 55SX machines, main units only, with HD and memory included. If I can get $5 each plus shipping I'd break even on them. I also have a model 30 and a model 30-286, both in working condition. Again if I can get $5 each plus shipping... I have a book on Ebay right now that I could sell direct - Tandy CoCo 2 Advanced Color Basic programming book. I'm in the middle of Kentucky and can ship USPS, UPS or if you're close enough pickups or delivery can be arranged.

25 years, 7 months

1
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Free: 3B2 OS tapes

by mrbill＠mrbill.net

I've got a set of AT&T 3B2 OS tapes (I think for a /500 or /600) here, that I never used back when I had a load of 3B2 stuff. They're labeled: Tape 1: ------- AT&T 3B2 Operating System Utilities Release 3.2.1 V3 120MB Tape Tape 2: ------- Operating System Utilities Rel. 3.2.1 V3 Issue 2 (1Q92) If anybody can use these, please let me know. Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

25 years, 7 months

2
1
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CorelSCSI

by mark_k＠iname.com

Hi, The CorelSCSI package allows various SCSI devices, including WORM drives, to be used with PC-compatible (MS-DOS) and Mac computers Does anyone know what the most recent versions of CorelSCSI for the PC and/or Mac are? Any idea where I could get hold of a copy? -- Mark

25 years, 7 months

3
2
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Thicknet (was Re: BBS's)

by ajp166＠bellatlantic.net

From: Carlos Murillo <cem14(a)cornell.edu> >>don't have to listen to them. Why should me VAXes be interrupted by >>the constant chatter of WIN98? >>clint That was the reason for the introduction of vaxserver3100... >/etc/syslog.conf can be modified to avoid this. Fortunately, we're behind >a firewall. But having to acommodate idiotic NT needs sure sucks. REason, NT uses netbuei (netbios) as it's networking and if your running IP suite then it's netbios over IP. In the end it's netbios that wants to be pinged often. Makes for a lot of short packat traffic. Gets real nasty with more than about 30 systems on a net. Allison

25 years, 7 months

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Thicknet (was Re: BBS's)

by ajp166＠bellatlantic.net

.From: Tony Duell <ard(a)p850ug1.demon.co.uk> . >> I've only found one place where it's a problem so far, with an NE2000 card >> in a slow XT compatible the data rate (even at 10 Mbps) was too high for it DMA, a must and a lot of packet buffers (ramdisk). >I would be suprised if a PDP11 or PERQ or D-machine or... would manage >anything close to 100Mbps. In fact I know it won't. PDP-11 (q or unibus) will not. 100mb/S rate needs a minimum of 12.5mb second sustained transfer and burst rates slightly higher. None of the ISA-8/16 bit systems can. >Of course another issue is that some of these machines have built-in >ethernet interfaces (PERQs do, for example), and there's no way of adding >a 100Mbps card to them. Fortunately 10mb/s is still around for a while. >> Hubs and switches are getting cheap and small. An 8 port switch is about the > >What's the cost got to do with finding space for it, finding power for >it, or maintaining it? It's wall wart powered but software maintenance for them can be a pain. Not much bigger than a unmanaged hub. There is little value in switches until you get more than 4-5 systems that want to carry intense conversations concurrently. >> AUI tranciever in a junk bin, but I've never seen 10BaseT-coax converter the net at work uses a few of them, those are just baluns. Also the 10bt to AUIs are handy for boosting signal. They seem better at taking a noisy 10bt and pumping it on the backbone (thinnet) than a simple unmanaged hub. >Got a load of assorted transceivers for 10 p each recently (about 15 >cents to you...). They can be found cheap, used. Allison

25 years, 7 months

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Thicknet (was Re: BBS's)

by pete＠dunnington.u-net.com

On Nov 22, 9:14, Eric J. Korpela wrote: > They don't need to. Nothing stops machines from talking 10 Mbps over > 10baseT. That's what the 10 stands for. As long as you've got appropriate > hardware, they can commingicate with a 100 Mbps machine elsewhere on the net. > I've got 4 machines on the desk behind me on a 10 Mbps hub. The hub is > connected to the 100 Mbps switch that the machine on my desk is connected to. > I have no problems with my 100 Mbps full duplex machine talking to 10 Mbps > half duplex machines. I don't claim to know how the switch negotiates > rates and duplex. I just know that it does. It's done by a protocol involving exchange of patterns of link pulses when the link is first established. Full duplex and 100Mb capability are offered (separately, and there are a few devices that support full duplex 10Mb although it's not part of the standard) by one side of the link; if there's no approriate response from the other end, the link remains at 10Mb half-duplex (ie, normal 10baseT). > If you've got 10base2 nothing stops you from connecting it to a 100baseT > network through a repeating hub or switch. Well, strictly speaking, such dual-speed hubs are actually 2-segment repeaters that are very like simple switches (or a bridge). They buffer the data between the fast and slow segments, and on the cheaper ones that can reduce the performance significantly. > But at $80 a new 100 Mbp hub doesn't break the bank. (I also have never had > a hub or switch fail. Unless you only have a few, you've been lucky. I look after around a dozen serious switches and about 3 dozen hubs, and in the last four years we've had around half a dozen failures. Of course, one or two have been simple, like dead fans causing a hub to overheat, and we've had at least three instances of a single port failing. That's a lot fewer failures than we have on PCs, but then we have a lot more PCs! This is comparable to the rates seen by my colleagues across campus, incidentally. You should also bear in mind that ethernet is amazingly tolerant, and there can be intermittent failures, dropouts, links that fall back to half duplex etc which you won't notice unless your management system is fairly good. > On a related note, are there standards for wiring an RJ45 for phone use? > For localtalk? (I would assume that it would be possible to put both > in one.) There is, at least in the UK. I don't know if it would apply in the States, since you use two wires (one pair) for the phones and we use three (a pair and a half, but we normally also connect the fourth wire between nodes). Anyway, 10baseT and 100baseT use pins 1,2,3, and 6; the phones use 3,4,5, and 6; ISDN uses 3,4, 5 and 6 for data and carries power on the other two pairs. You normally plug a little white box containing a phone socket and PBX termination into the RJ45 wall socket. ISDN uses RJ45 plugs so nothing extra is required (unless it's a long run or multiple sockets and you need a terminator on the end). You can get little doublers that have one RJ45 plug on a short lead connected to a small box with two RJ45 sockets, wired in such a way that you can plug a 10[0]baseT into one side and a phone line into the other; connect the plug to a patch panel, and reverse the process at the other end (wall socket) to separate the signals again. They're meant for places where there's not enough "horizontal" wiring (the under-floor/overhead/behind-walls runs from patch panel/wiring closet to wall socket). You can also get ones that double up 2 x 10[0]baseT onto one cable, using all four pairs instead of two. > It would be nice to have the wired such that a misconnection > (ethernet into phone) won't fry anything. The phone won't be hurt by the net devices, but it's possible the net devices might be surprised by phone/ISDN voltages. However, as far as I know, we've never had a mishap (touch wood). > It would also be nice to sprinkle > RJ45 sockets around the house and decide what to use them for later. It's called "structured wiring", and that's what patch panels are for :-) All our ethernet, serial, ISDN, and POTS signals are carried on the same wiring and patch panels (except for the fibre, of course). We have about 800 RJ45 wall and floor sockets, not counting the patch panels, in our building for exactly that reason. I have about a couple of dozen at home, but I also have quite a few DB25s, BNCs, and phone sockets :-) -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 7 months

1
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MacOS 8.1 on an '030 (somewhat OT)

by rachael_＠gmx.net

>This is absolutely *disturbing*. >http://people.ne.mediaone.net/brochner/bornagain/showme.htm It`s running on a 040 there but I belive that there is a hack in one of the apple emulator for that amiga that would let you runne 8.1 on a 030. Regards Jacob Dahl Pind Public Pgp key available on request -------------------------------------------------- = IF this computer is with us now... = =...It must have been meant to come live with us.= = (Belldandy - Goddess First class) = --------------------------------------------------

25 years, 7 months

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Thicknet (was Re: BBS's)

by ethan_dicks＠yahoo.com

--- Gene Buckle <geneb(a)deltasoft.com> wrote: > I still have one of those huge H???? vampire tap ethernet trancievers that I > modified for 10Base2 that I can hook up to the DEQNA. > g. But does anyone out there use Thicknet at home? I have one vampire tap transceiver (and a bunch of 10Base2). I would love to set up a segment of 10Base5 just for the historical sake of it all. I suppose I would need at least one more 10Base5 transceiver to make it worthwhile. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/

25 years, 7 months

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ISA prototyping boards at RSLC, was Re: intro and RML380Z

by dogas＠bellsouth.net

> What size and pad type do these board use? How big are the holes? How's > the provision for power distribution? How are the bus signals terminated? They were full sized ISAs, the boards are green and the holes were kinda small and lined up... ;) Plated through holes and no termination I think. I'll dig one up again for the catno. and specs you asked for this weekend > I've seen some boards I'd consider at the Radio Shack.com store here in > Denver, but I've never seen one in a regular RS store. They looked like closedout regular RS cat'd stock items of indeterminant age but still 'NIB' ;) - Mike: dogas(a)bellsouth.net

25 years, 7 months

1
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Rescue Needed: IBM System 36 in Central PA

by LFessen106＠aol.com

In a message dated Tue, 21 Nov 2000 12:56:24 PM Eastern Standard Time, James Willing <jimw(a)agora.rdrop.com> writes: << Please contact original message author (shown below) if you have rescue this one. -jim ---------- Forwarded message ---------- Date: Mon, 20 Nov 2000 12:05:18 -0500 From: Nathan Lauver <nlauver(a)acsworld.net> To: jimw(a)computergarage.org Jim, My company is in posession of an IBM System/36, most of the docs, lots of software, the line printer, two terminals, and an ISA-based emu card for a pc. I can't find anyone to buy it, and it's getting cold. It's in a pavillion-like storage area outside. I talked to the powers that be, and said if I can even just get it out of our way, they'd be happy. Would you be interested in picking it up, or having it shipped? We're located in Central PA. -Nathan >> Just how big is this? I am located outside Allentown (Eastern PA). And where exactly are you located? -Linc Fessenden http://members.aol.com/lfessen106

25 years, 7 months

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TCP/IP on eightbitters

by rachael_＠gmx.net

There is a tcp/ip stack for Amstrad CPC called cpc/ip last time I looked at it only ran at 6128. Regards Jacob Dahl Pind Public Pgp key available on request -------------------------------------------------- = IF this computer is with us now... = =...It must have been meant to come live with us.= = (Belldandy - Goddess First class) = --------------------------------------------------

25 years, 7 months

1
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Two Convergent Technology UNIX server free for UK collection

by kevin＠xpuppy.freeserve.co.uk

I have a pair of Convergent Technology servers, a 640 and 220. Both running CTIX and in apparently working order. Some manuals and installation tapes, including MicroFocus Cobol (you deal with licening issues!). Free to good home, but need to be collected from near Guildford. Happy to answer any questions as best as I can. They were given to me whilst collecting another machine. Kevin Murrell kevin(a)xpuppy.freeserve.co.uk

25 years, 7 months

1
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Thicknet (was Re: BBS's)

by pete＠dunnington.u-net.com

On Nov 21, 22:29, Carlos Murillo wrote: > This reminds me of a quirk in the EE department's network; some NT boxes > here rely on some flavor of NIS for authentication, but they have to > be ping'ed every few seconds at a specific port or the NT yp client > dies. To avoid that, one of the servers sends a bogus yp packet to > _every_ IP address on the network every now and then. Unix machines > don't like it; portmap logs in a couple flavors unix have to be disabled > in order not to generate an entry every few seconds. In others, > /etc/syslog.conf can be modified to avoid this. Fortunately, we're behind > a firewall. But having to acommodate idiotic NT needs sure sucks. Agreed. This is geting a bit off-topic[1] but that's the sort of thing VLANs are for. You could use an intelligent switch (or hub) and put all the NT systems in a separate VLAN from the Unix boxes. Some systems (eg Enterasys/Cabletron) can do that for you automatically by seeing what does/does not generate certain protocol packets. A VLAN is a single broadcast domain, so the broadcast to the NT machines will be restricted to the NT machines, never reaching the Unix boxes, regardless of subnet numbers and network topology[2]. We've been using VLANs for similar purposes since 1995, though in our case it's mostly to restrict Appletalk and IPX to a range of ports (spread around several dozen switches and hubs) and to separate staff, student and management subnets. Recently I've also put the DHCP servers into a separate VLAN, and restricted the connections, so no-one can run a rogue DHCP server. [1] VLANs are too recent (mid 1990s) to properly be the province of classiccmp. [2] Of course, you could also do this by assigning all the NT boxes to a separate subnet if you have a spare number range. The advantage of VLANs is that they can overlap; machines can be members of more than one for different purposes. -- Pete Peter Turnbull Dept. of Computer Science University of York

25 years, 7 months

1
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Looking for Combat for TRS-80

by vcf＠siconic.com

Does anyone have or know where I can get a copy of the game "Combat" for the TRS-80? It was a multi-player game that allowed you to connect up two TRS-80s and play against another person in realtime. If so, please contact me directly <sellam(a)vintage.org>. Thanks! Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 7 months

4
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HP 3000 tape/file formats

by rigdonj＠intellistar.net

Can anyone help this guy? Joe >Return-Path: <chris.muller(a)mullermedia.com> >Reply-To: <chris.muller(a)mullermedia.com> >From: "Chris Muller" <chris.muller(a)mullermedia.com> >To: <rigdonj(a)intellistar.net> >Subject: HP 3000 tape/file formats >Date: Mon, 20 Nov 2000 14:17:31 -0500 >X-MSMail-Priority: Normal >Importance: Normal >X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 > >Hi, > >Saw your name on the web in connection with HP. I'm looking for information >on the organization of backup tapes created on an HP 3000. (We write PC >programs to read minicomputer tapes, and want to do one for the HP3k). >Thanks for any help you can give us. >Regards, > >Chris Muller >Muller Media Conversions >http://www.mullermedia.com >212-344-0474 > > > >Attachment Converted: "C:\ATTACH\HP3000ta.htm" >

25 years, 7 months

2
1
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Geekus Deeks

by mbg＠world.std.com

> Has anyone on the list got any response from DECus lately > (2~3 months)? I tried signing up about 4 weeks ago and got > no response. I would like to do whatever's necessary to join. I'm totally disgusted with DECUS/Encompass... I think someone pulled a fast one on the membership. I understand there were two votes recently. I got my ballot for the first one... I didn't get a second, so I sent email to the location specified on the encompass web page. I never received the second ballot, and after the deadline had occurred, I got mail back indicating it (my email) had gone to the wrong place (I would have expected the mailto: link would have been set correctly). Anyway, at this point I don't care... DECUS is gone. I don't know of anything to bring it back. I won't be renewing with encompass, it doesn't meet my needs at all. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

25 years, 7 months

4
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Apple /// on eBay nice & working

by ip500＠home.com

Shameless commercial plug alert! Actually wasn't someone looking for valuation info for a /// recently? http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=504253462

25 years, 7 months

2
1
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memory chips

by pete＠dunnington.u-net.com

On Nov 21, 22:12, Hans Franke wrote: > > Anybody intrested in approx 300 MCM514258AZ80 memory chips? > > Motorola 1 Megabit 256kx4 fast page mode DRAM ? Not quite; they're static-column, not FPM. I was going to reply that two of these would make a buffer for my Z80 EPROM programmer project, but I wasn't planning to build 150 of them! Anyway, I see others have beaten me to it :-) -- Pete Peter Turnbull Dept. of Computer Science University of York

25 years, 7 months

2
2
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Commodore 286LT ?

by black＠gco.apana.org.au

Just picked up a Commodore 286LT notebook (1990, so it just makes it!). Has a connector for an internal modem & two internal plugs for ram expansion, can anyone on the list tell me where I might find this items ? (And docs for the machine.....) cheers, Lance Lyon

25 years, 7 months

2
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First trading list

by dogas＠bellsouth.net

Hi gang, I have some systems that I'd like to trade with. I'm, as always, looking for a little strange [cpu]. If ya see anything you like and wanna propose a trade, LMK! :) Here they are: 1. Kaypro 10 in the blue Kaypro carrying case 2. Apple II+, 2 Monitor 3. Boxed Timex 1000, Manual, 16k piggyback Module 4. Atari 800, Boxed 1050 floppy, (original style) 410 recorder 5. TRS-80 Model 4 6. Apple Mac 128, keyboard, case 7. IBM PC Portable, (buncha dos 1.0 stuff) 8. Atari 800, ps 9. Intellivision II boxed 10. Apple II+, 2 Disk IIs, Numeric Keypad, Kensington Saver, Monitor 3 11. Intellivision, buncha games 12. Epson HX-20, hard-shell plastic case 13. Commodore 128D, 1702, 1350 mouse, Geos 2.0 14. Big Matle Aquarius collection (2 computers, one boxed, 2 boxed printers, boxed program recorder, boxed 16k pac, 3 joypads,2 mini-expanders, smf 5 game carts (two boxed)) Cheers - Mike

25 years, 7 months

3
2
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Enigma machine

by oliv555＠arrl.net

For those who followed this interesting thread earlier this year here is a link http://www.sunday-times.co.uk:80/news/pages/sti/2000/11/19/stinwenws02039.h… to a series of articles recounting its recent recovery. nick o

25 years, 7 months

1
0
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Thicknet (was Re: BBS's)

by fmc＠reanimators.org

Sellam Ismail <foo(a)siconic.com> wrote: > On Mon, 20 Nov 2000, Tony Duell wrote: > > 10BaseT needs a hub. This is one more thing to find space for, one more > > thing to have to power, and one more thing that you have to maintain. > All non-issues. Small, uses relatively little power, and have you ever And it invariably wants that relatively little power to be delivered via a fat wall wart that occludes two outlets on the nearby power strip. Ducky. But don't mind me, I'm just irked because R*d H*t L*n*x 7.0's de4x5 driver doesn't seem to want to grasp that there's a BNC connector on the card, let alone that that's where the network is connected, so there is now a hunk of Cat5 leading to a shiny new hub (with BNC connector) sitting on top of that box, and a new wall wart occluding two outlets on the power strip. ObClassicCmp funnies: maybe it's just that my Un*x preferences run along BSD lines (with the exception of HP-UX version 5 on 9000/500s), but R*d H*t sure makes me think of the old joke about AIX: it's like what a Martian might do if his buddy returning from a survey of the blue planet told him about this really neat operating system called Unix that they use over yonder. ObClassicCmp2: so how many Thicknet folks actually have the tap installation tool? You know, the one that looks like a drill bit mounted in a plastic handle? -Frank McConnell

25 years, 7 months

6
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Heathkit H-89 free to good home

by vcf＠siconic.com

This guy in the Boston area has a Heathkit H-89 he would like to give away. Please contact him directly. Reply-to: sussman(a)alum.mit.edu ---------- Forwarded message ---------- Date: Mon, 20 Nov 2000 17:37:58 -0800 From: Steven Sussman <sussman(a)alum.mit.edu> Subject: VCF Feedback! I'm giving away a Heathkit(Zenith) H-89 to whomever will take it off my hands in the Boston area. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 7 months

5
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