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

by bill_r＠inetnebr.com

Our mainframe guys recently got rid of some big hard drive chassis, and in the process of cleaning up they were going to thow away (!) a couple of little Memorex/Termiflex one-handed terminals that I've lusted after ever since I saw the service engineer using them. I think they're a 1 or 2-line LED dot-matrix display, and they have some form of "chording" keyboard on the front. They terminate in a 9 pin female DIN-like connector with some kind of twist-lock. I believe they're RS-232, but was wondering if anyone could supply a pinout. They also came with a cable with the same connector (also female) on one end and a male DB-25 on the other, which is marked "RS-232 Modem Interface". I'm guessing that you could plug in either one of these terminals or a modem to the same connector on the disk controller. I can always figure out the pin-out from that cable and give it a try, but I'd like to make sure I'm not missing something vital (like a TTL-to-RS232 adapter) that they might require, before I hook one up wrong and fry it. (I know, I could open one of them up and see what the cable connects to, but I'm being lazy. Besides, this way I get to brag about them... ;-) Bill Richman bill_r(a)inetnebr.com http://incolor.inetnebr.com Home of Fun with Molten Metal, technological oddities, and the original COSMAC Elf computer simulator!

25 years, 8 months

2
1
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Convergent Technologies Workslate

by r.stek＠snet.net

I recently acquired a Workslate and matching printer in excellent condition - still a pretty cool looking unit. The guy I got them from thought it ran CP/M, but it uses a 6803 with its own proprietary 'OS.' The manuals make no mention of the specs for the (missing) wall warts. Does anyone have a Workslate with the power supplies? Since both units use 4 AA, alkaline or nicads, I guess it's not too critical. Also, knowing the polarity would be helpful. Thanks. Bob Stek Saver of Lost Sols

25 years, 8 months

11
24
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HP 35401A Autoloader Tape Drive??

by fmc＠reanimators.org

ip500 <ip500(a)home.com> wrote: > Anyone have any data on this beast? Catalog sheet or tech sheet would > be ideal. It talks to the outside world via HPIB cable. It's approximately an HP9144 cartridge-tape drive with an autochanger. -Frank McConnell

25 years, 8 months

1
0
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Electra sim computer (was: Re: "Basics of Analog Computers" book)

by dcoward＠pressstart.com

"Mark Gregory" <gregorym(a)cadvision.com> said: > If the captions on the pictures (very nice, by the way) are correct, this Yes, they are terrific. Gene, tell us where this simulator is located. > simulator isn't an analog computer at all by the definition I'm familiar > with. It uses tubes and relays, which are discrete digital components Well others here have covered your misconception about tubes. But relays are also an important part of an analog computer. Relays can be used to connect and disconnect special circuits like weather, hazards, malfunctions. Relays are also used on every integrator to set that integrator back to it's initial conditions when the computer is reset. What tells me that it's analog is: * The fact that it has to stablize for 7 days * The main output is plotting boards * All of the panel meters I see * The operator's panel is just switches and knobs * "relay/tube" modules are just too big to be logic circuits. * Aircraft simulators need the true parallel processing of an analog computer. (Up until the early 70's) * I really don't see anything that suggests digital components anywhere in these pictures. Thanks for the pictures Gene. Where I work in Sunnyvale is right on the approach for NAS Moffett field. P3s fly over all the time. --Doug =================================================== Doug Coward dcoward(a)pressstart.com (work) Sr Software Engineer mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA Visit the new Analog Computer Museum and History Center at http://www.best.com/~dcoward/analog ===================================================

25 years, 8 months

4
10
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"Basics of Analog Computers" book

by mranalog＠home.com

Bob said: > ...."Basics of Analog Computers" by T. D. Truit and A.E. Rogers, ...... > to the best 37-words-or-less reason for why you want ...... pre-historic > tome on analog computers, beautifully illustrated (seriously) with > pen-and-ink drawings on about every other page. Submit your entries to the > list by midnight November 10, 2000......... I have this book highlighted on my reading list of analog computer books as "the best book I have seen for someone new to analog computers". http://www.best.com/~dcoward/analog/readlist.htm Most books on analog computing use tons of mathematical equations to illustrate a concept because they are aimed only at engineers. This book explains these concepts simply with wonderful drawings and a minimum of mathematics. I love reading it so much that I have one copy at work and one copy at home. But hey, that's just me. :) --Doug ========================================= Doug Coward Press Start Inc. Sunnyvale,CA =========================================

25 years, 8 months

13
19
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An article on the ZX-81 kits still being sold in the US

by Glenatacme＠aol.com

> On Nov 7, 16:09, Hans Franke wrote: > > > Not completely. There _are_ 2 KB kits around - as you may remember, > > the ZX81 board was to be used with either two 2114 (1KB)or one > > 6116(2KB). Man, I'd like to get my hands on a 2 KB ZX-81 kit! ;>) To my knowledge, no ZX-81, kit or otherwise, shipped with 2 KB RAM, even though the boards could support it. The Timex TS1000 came standard with 2 KB. Glen 0/0

25 years, 8 months

1
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Analog vs Digital devices, was Magnetics

by ethan_dicks＠yahoo.com

--- ajp166 <ajp166(a)bellatlantic.net> wrote: > An older elector mechanical device did this for a different problem. > > Given variables: speed over surface, > altitude, > gravity, > an objects drag > > Problem: At what time do you release an object to hit a > predetermined spot. > > Hint: it was top secret in the early 1940s. I would expect this is the Norden Bomb Sight (as made famous to my generation on "Hogan's Heroes" :-) -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!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/

25 years, 8 months

1
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Anyone have an RK8E to sell?

by ethan_dicks＠yahoo.com

Now that I'm dusting off the RK05j for my Qbus systems, I'm interested once again in attempting to finally hook a RK drive off of a PDP-8. I have an RL8A and RK8E and a bunch of standard stuff, but I've never had the chance to round out the collection. So... are there any RK8Es that aren't nailed down? Thanks, -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!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/

25 years, 8 months

2
1
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"Basics of Analog Computers" book

by ajp166＠bellatlantic.net

From: Mark Gregory <gregorym(a)cadvision.com> >Well this has certainly been an informative (and eye-opening) thread for me. >I had no idea that analogue computers were as common and as long-lived as >they were. That last word should be not WERE but, ARE. They still are used. > In the only "History of Computation" course that was included in >my Comp Sci program, analogue computers were treated only incidentally, with >the implication that development ceased with the advent of digital computers >(whether electro-mechanical or electronic) in the mid 1940s. In that course >and in other computing histories I've read, analogue computers seem to be an >unfairly neglected topic. They were not always thought of as computers, hence the neglect. Think servo systems and they come back as those very non digital systems. They may have been part of a larger mixed system like a attitude control system in a missle or autopilot for an airplane. The systems encompassed in the analog computers are around us still. Allison

25 years, 8 months

1
0
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"Basics of Analog Computers" book

by ajp166＠bellatlantic.net

From: Don Maslin <donm(a)cts.com> >particular, I recall reading about a '60ish project by one of Britain's >Formula One makers to use a computer to control a F1-machine driving >around an actual circuit in lieu of the driver. As I recall the story, >it did not make it beyond the second turn. However, an analogue >computer handled the task quite well. Apocryphal? ??? this confuses the ideas of precision, accuracy and speed with complexity. Digital is absolute accuracy IE: 0101=5 and for a given machine any variation is error. Analog, is mushy on accuracy, 5 Volts at some output is "approximate". Digital to process data for a complex equation in real time has to collect it perform operations on it and output it. These occur at some rate that is fixed by hardware. The more complex the task the lower the total Throughput will be. Also there is latentcy, time from input to processed output, more complex means longer for a fixed speed. Analog, assuming a fixed slew rate for the op-amps used the system throughput IE: a change in input means near immediate change in output that will be complete in some "setteling time". That time even for slow op-amps is quite fast and usually in microseconds. Also analog does not mean the output cant be absolute (IF Vin or Fin exceeds N (some rate) then turn relay on). I've done some really neat things using pots realys and motors with only limited use of amplifying devices to trans late the pots output to something that can drive a motor. This is classic servo systems stuff and the fundemental circuit is the Wheatstone bridge for systems like this. If you add nonlinear devices like LOG taper pots(variable resistors) and gears and cams you can get reactions that can mimic things like non linear actions. The idea of balance is employed. This kind of automation was as common as flies and widely seen though often as simple devices. There is another group of machines that fall dead smack in the middle of the analog and the digital. These were the early preprocessing boxes that might take 8 channles of analog telemetry data and reduce it to stored data based on time, sensor and relative value or even as a histogram. While these machines would have counters, registers and some even core or drum(disk) they were at best not programable and most didn't even qualify as hardwired program (elementary state machine). Just a few points about early computer differences. Allison

25 years, 8 months

1
0
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HP 35401A Autoloader Tape Drive??

by ip500＠home.com

This should just make the 10 year rule...it had a service sticker on it >from 1988. Cool, robotic magazine fed tape drive that holds 8 of the DC600A 1/4" tape cassettes and autofeeds them into the drive. All of my old HP reference stuff lists mass storage gear under 79xx series rather than this 35401A business Anyone have any data on this beast? Catalog sheet or tech sheet would be ideal. It talks to the outside world via HPIB cable. Thanks, Craig

25 years, 8 months

1
0
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HP DraftMaster I

by sumeetsuri＠psu.edu

Hi guys, I am sure I am very late in your discussion. Right now I am using the HP 9872 plotter and I need another piece. Could u tell me where I can find a HP 9872 plotter. Thanks a lot Sumeet

25 years, 8 months

2
1
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MULTICS Installation, Halifax

by dhquebbeman＠theestopinalgroup.com

> >I should have mentioned that Multics also was closely tied > >to a 36-bit word size... a re-implementation could probably > >get around this, but a port would be difficult... > > > >However, a port would work for an emulator, where you'd have > >control of all aspects of the target architecture. > > Well.... Then How about one of the following Chips? Itanium, Alpha, > PA-RISC, or UltraSparc? Would a 64-bit computer be able to > handle running a 36-bit OS? Certainly... in fact, this topic generated some heat. It's my contention that being bottom-feeder commodity equipment, the Intel line would be more cost-effective than an Alpha. But that's irrelevantif you've got a box of surplus Alpha chips lying around. And the IA64 won't quite be bottom-feeder commidity for a year or two, at least. ;-) > On the emulator side there are definitly 36-bit systems emulated on 32-bit > chips, and even on 16-bit systems (at least IIRC, the 68000 is a 16-bit > chip). I'm still waiting to get my hands on one of these mythical PDP-10 emulators... I want my own DECSYSTEM-10, even if it's really running on an old Mac. regards, -dq

25 years, 8 months

5
7
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reading a 9-track tape

by yoda＠isr.ist.utl.pt

Hi. Can anyone read a 9-track tape? I have a tape I'd like to read, but I have no tape drive for those tapes. I was wondering if anyone in europe could read it for me. Cheers, -- *** Rodrigo Martins de Matos Ventura <yoda(a)isr.ist.utl.pt> *** Web page: http://www.isr.ist.utl.pt/~yoda *** Teaching Assistant and PhD Student at ISR: *** Instituto de Sistemas e Robotica, Polo de Lisboa *** Instituto Superior Tecnico, Lisboa, PORTUGAL *** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585

25 years, 8 months

2
1
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Fibre Channel-related items up for grabs

by jfoust＠threedee.com

I got these items in a batch of other surplus items and I'm trying to determine their use or value. If anyone on this list is interested, please send a note, or off to eBay they go. See http://www.threedee.com/optics/ for pictures and more detailed descriptions. One is a HP A3406A Fibre Channel Host Adapter. I wasn't able to find this part number on HP/Aligent's web site, and it produced few other web hits. This a HP-HSC card, as used in today's K-series of servers. It can sustain 1/4 gigabit rates. Another item is a HP 83441B SONET SDH reference receiver. Is this used in testing very high speed optical networking equipment? It supports 622 Mbps SONET OC-12 and SDH and STM-4. It has fiber input on one end and RF output on the other. Another interesting item is a 28-pin DIP that appears to be a 20 mw semiconductor laser. This is an XMT1300-1.2, an optical driver for Fibre Channel (FC-0). An optical fiber emerges from one end and terminates in a standard pigtail fiber connector. It is a 20 milliwatt, Class 3b semiconductor laser, probably GaAs, centered at 1300 nm. It was made in 1991, so I felt close enough to the 10-year rule to post. :-) It was made by BT&D Technologies (British Telecom + Dupont) in 1991, now part of Agilent Technologies, a Hewlett-Packard company. It is one of their "logic to light" transmitters. - John

25 years, 8 months

1
0
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Here's one for the DEC engineers

by ajp166＠bellatlantic.net

From: Chuck McManis <cmcmanis(a)mcmanis.com> >Well, I've got to give a toast to the folks in DEC Engineering, it may be >that they had to deal with Field Circus screwing things up, but I for one >really appreciate that DEC used keyed connectors, and appropriate cables, >and sturdy hardware. I'm also glad that whomever designed the TQK70 did so >such that plugging it in backwards in the Q-bus does it no apparent harm. I Thank you from myself and all the other CSSE engineers. Those little details were part of requirements for serviceability that came from the Field Service side of the house and implemented in best technology by engineering. Brief DEC history about the group that was often known as product prevention. Customer Support Systems Engineering (CSSE) was an engineering arm that came into being back in the late 70s when DEC started to see more volume then quality. One of the first processes created by Field Circus was FA&T (factory assemble and test) was the starting point. The field and FA&T feedback went far in the 80s to eliminate the unreachable screws, scope required to setup, special tools and too many similar connectors. Allison

25 years, 8 months

4
3
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An article on the ZX-81 kits still being sold in the US

by pete＠dunnington.u-net.com

On Nov 7, 16:09, Hans Franke wrote: > Not completely. There _are_ 2 KB kits around - as you may remember, > the ZX81 board was to be used with either two 2114 (1KB)or one > 6116(2KB). Not exactly; originally, it was a 2 x 2114 or 1 x 4118. Most UK ZX81s have a 4118, though some users did replace the 4118 with a 6116. I've never seen one originally fitted with a 6116, only upgrades (and I've seen a lot of ZX81s -- the workshop I was in at the time used to fix them by the bucketload). -- Pete Peter Turnbull Dept. of Computer Science University of York

25 years, 8 months

2
1
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Analog vs Digital devices, was Magnetics

by ajp166＠bellatlantic.net

From: John Lawson <jpl15(a)panix.com> >meter, in real time. This may sound cumbersome today, but consider in >that in the mid fifties, digital computers were very, very expensive, >fairly rare, and every single problem required much analysis and coding, It would be 1979 before there was DSP fast enough to do a FIR filter digially for audio frequencies, Analog had been doing that for 30+ years. > PS: Anyone *really* interested in getting into analog computing might do >well to consider scarfing up a Heathkit EC-1 when possible.. they are >simple, small and portable, and have easily replaceable tubes, and having >(IIRC) 9 opamps, one can get quite elaborate with them. One could duplicate it using modern analog opamps and still solve the same problems. The best one I remember solved a bouncing ball, for varying gravity and rebound rates and "drew it" on an O'scope face. It was a Popular Electronics (maybe RE) design. Still very buildable. It's often forgotten that there were different op-amp designs that allowed things like four quadrant multiplcation, LOG and ANTILOG amps, CLIPPING, SUM, DIFFERNCE, ABSOLUTE VALUE when combined allow solutions of great speed with good accuracy. Allison

25 years, 8 months

2
1
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Vax message as system locks up

by ajp166＠bellatlantic.net

From: Bill Bradford <mrbill(a)mrbill.net> >> %SYSTEM-I-MOUNTVER, R7VEFG$DIA0: is offline. Mount verification in progress. >> After that I get a red line on the drive indicator and anything I on the >> console never returns. >> Any ideas? I have used varios drives that can handle the 512byte sectoring and they work fine. I have two Tohsiba XM3201B and a XM3501B that works fine for VMS. So there are other drives that do work. Allison

25 years, 8 months

1
0
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Off topic but interesting?? Magnetics

by ip500＠home.com

Sold a pair of old Jensen speakers to a guy in Korea the other day and am shipping them via DHL Worldwide. They have refused to accept the items until I come up with a "gauss reading" for the magnetic field???? Anyone ever heard of such a thing? I did a fair bit of research and found their maximum allowable reading is ".00525" but no one at DHL has a clue what that means. I'm assuming it is a measurement in gauss at some prescribed distance from the package. On average the strength of most high powered speaker magnets is in the range of 10,000 to 15,000 gauss, but that is measured at the voice coil [in the center of the field]. The field would decrease [as the square or maybe even the cube] of the distance. Stumped, Craig

25 years, 8 months

10
15
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Vax message as system locks up

by ncherry＠home.net

A while back I posted a message and mentioned a problem with the drives unmounting. Well here is the message: %SYSTEM-I-MOUNTVER, R7VEFG$DIA0: is offline. Mount verification in progress. After that I get a red line on the drive indicator and anything I on the console never returns. Any ideas? -- Linux Home Automation Neil Cherry ncherry(a)home.net http://members.home.net/ncherry (Text only) http://meltingpot.fortunecity.com/lightsey/52 (Graphics) http://linuxha.sourceforge.net/ (SourceForge)

25 years, 8 months

2
2
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KA650 in MicroVAX BA123?

by jamesg＠PARRIMARK.COM.AU

I am relatively new to the VAX world, but I have already established that the very same thing was done to my MicroVAX by the previous owner... I have heaps of questions for the guy, but regretfully I inherited it from a deceased estate :-( What else was done as part of the MicroVAX II -> 3 upgrade? James > I have a MicroVAX II which has been upgraded to a > MicroVAX 3. I say MicroVAX 3 because that is what > is on the upgrade decal and the DEC instruction > booklet refers to the upgrade as a Microvax 3. Are > there MicroVAX III decals out there, is the > MicroVAX 3 decal unusual, or are both common? > > Doug. >

25 years, 8 months

4
3
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Anderson Jacobsen ADC 300 modem

by jfoust＠threedee.com

On a recent surplus hunt, I picked up an Anderson Jacobson ADC 300 baud acoustic coupler modem for $1. What a beauty - it's in a wooden box with a flip-top lid and a brushed aluminum interior panel. It has two DB-25 connectors, but one is used to feed *in* the AC power (!). I haven't disassembled it yet. I did a quick web search and one turns up in Megan Gentry's collection. How old is this? It's serial number 759. - John

25 years, 8 months

21
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OpenVMS Hobbyist Install

by ajp166＠bellatlantic.net

From: Bob Brown <bbrown(a)harper.cc.il.us> >I see that the RZ25 is not supported to install the openvms 7.2 system to Dont tell my system that. It is supported. >(from the hobbyist cd)..would that explain the numerous parity errors that >I get when I try to install to an RZ25? (or is my RZ25 probably toast)... You either have the jumpers wrong or a bad drive (missing terminator?). Allison

25 years, 8 months

1
0
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KA650 in MicroVAX BA123?

by ajp166＠bellatlantic.net

From: DOUG PEKSA - COMPG <PeksaDO(a)Cardiff.ac.uk> >is on the upgrade decal and the DEC instruction >booklet refers to the upgrade as a Microvax 3. Are >there MicroVAX III decals out there, is the >MicroVAX 3 decal unusual, or are both common? No, not unusual.Standard FS kits usually have all sorts of docs and rebadging material. What often happend was that someone would upgrade by attrition of another system or by ordering just what was required. With that you could have an assortment of markings. Allison

25 years, 8 months

1
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RS6000...I have one taking up space here - for donation/trade...

by claudew＠sprint.ca

Hi With all this talk about RS6000 servers, I would like to say I have a 320H 7012 type that has almost gone to the dumpster in the last two major basement cleanings I have done. It was removed from service and brought here. I booted it several times with the old AIX on there and everything was working. Plan was to put Linux on there...but then i learned it's not available...I pulled the 2 SCSI drives from it and never re-installed them. It was working last time I re-started it (3 months ago) with a Wyse 60 connected to the great modu10 serial connector (had to build an adapter plug - thanks IBM) using the diag/boot floppy disks for it that I have... No keyboard...no monitor...MCA arch...80Megs Ram, floppy, Token Ring network card, something I was told was a Sabine accel. video card (?), scsi card. I have no use or space for this. I would like to give it away or maybe at least get something in exchange...I collect micros from the 197x-198x...current wish list includes : trs80 mod III, NExT, Atari 800 or CP/M systems or anything else interesting...I am NOT looking for $$$ for this...I don't have the time to bother seeling it on epay, I am not even signed up to sell or buy on epay... One hitch : I am in Montreal, Canada. So if you dont want the whole thing (29 pounds on my people scale) or I can always just ship some boards, or whatever...I you need more info or pics, just email...I am not too familliar with the R6000 machines... Thanks Claude claudew(a)sprint.ca

25 years, 8 months

3
2
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NEC APC available

by jfoust＠threedee.com

Contact the person below, not me. - John : ::: : ::: Date: Thu, 12 Oct 2000 00:14:51 -0700 (PDT) From: pppmjs <pppmjs(a)yahoo.com> Subject: An Old Computer To: jfoust(a)threedee.com : : Hi there- I found your link thru a site on Computer museums. I have a functional NEC Advanced Personal Computer (APC) (1983) It runs with 2 - 8" floppies. Believe to have been built to run/assist by BridgePort CNC machines. Operating system is Dos 2.1 Have operating manuals & guides. (Got it to boot, but didn't get no further, as I'm not sure what some of the disks are.) I need to possibly get something out of this system...say $125-$150,or more if it's possibly a rare find(?), if in fact it's worth anything, I really don't know, but believe it would be. If your interested or know of someone that may be, please reply back. Thanks for your time Michael Salomaki pppmjs(a)yahoo.com __________________________________________________ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/

25 years, 8 months

13
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Here's one for the DEC engineers

by cmcmanis＠mcmanis.com

Well, I've got to give a toast to the folks in DEC Engineering, it may be that they had to deal with Field Circus screwing things up, but I for one really appreciate that DEC used keyed connectors, and appropriate cables, and sturdy hardware. I'm also glad that whomever designed the TQK70 did so such that plugging it in backwards in the Q-bus does it no apparent harm. I reassembled a VAXServer3400 after cleaning it and got the dreaded "E" in the display, after careful diagnosis (with the power on!) I noticed the TQK70's chips were on the wrong side of the board! (Is there any good way other than lying on the floor on your side to insert things into a BA213?) Powered off, pulled board, crossed myself and re-inserted it correctly. Voila, system boots and tape works fine. Cheers! --Chuck

25 years, 8 months

1
0
0 0

Lisa 2 Keyboard/Mouse substitute?

by dhquebbeman＠theestopinalgroup.com

> Does anyone know if I can substitute > a keyboard and mouse from an early Mac? > (the ones with the non-adb keyboards > and db9-connector mice). I don't mind > hacking the connectors, if someone can > give me the pinout info. As far as I > can tell, the lisa uses some sort of > mini-db9 for the mouse, and a 1/4" > headphone-jack for the keyboard (weird!) Mouse: yes Keyboard: no However... Somewhere out there, there's fairly complete info on the Lisa hardware. It should include details, if not on the keyboard itself, on the interface to the keyboard. From that, you might be able to modify a spare Mac keyboard to work until you can find a Lisa replacement. Worse case, you'll have to use a microcontroller to convert between the two interfaces, requiring some custom work on your part. -dq

25 years, 8 months

4
4
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A couple of Bondwell 2 questions

by whdawson＠mlynk.com

I bought this CP/M laptop on eBay a couple of weeks ago for $9.99, with another $13.70 for shipping and handling. The laptop is in great condition, as described, well packed, and arrived intact. The batteries are even OK and hold a decent charge. I've done this eBay thing long enough to be able to read between the lines and was fairly certain that it would not boot from the disk drive. If it was able to, it would have said so in the listing. Sometimes what is not said is as important as what is said. It is now running great. I found two problems, the first caused the second. The power connector for the floppy drive was on backwards. What this means is that the +12 volt and +5 volt power lines were swapped. The +5 applied to the +12 circuitry won't usually cause any damage, but the +12 on the +5 will and did. The floppy was unable to seek because there was no power to the head stepper motor because there was no power to the stepper motor controller IC. Q1 ( I think it is a small SCR, since its three legs are marked S, G and D) which switches/regulates power to the stepper IC seems inop. When I short the S and G leads, the controller IC gets +5V, the stepper motor works and the floppy drive functions. The Bondwell now will boot, format and copy disks. The only markings on Q1, TO-92'ish, are A854 (date code or 2SA854?) and S G D. I think this device is in the circuit to save power; perhaps when the floppy is not selected, the head stepper is left to float free. Correct me if I'm wrong about this. The floppy is an early 720K DSDD (even though the Bondwell is only SSDD) Epson SMD-180B. Question #1. Does anyone have schematics for this drive? Also, I tried to build a custom disk definition for the Bondwell 2 for 22disk v1.44. I used Anadisk to evaluate the Bondwell floppy format, and it says the floppies are single-sided, 18 sector, 256 byte sector size, and the interleave is 2 to 1, i.e. 0,9,1,10,2,11,etc. I made one freshly formatted floppy on the Bondwell and only put dump.asm and dump.com on it (I also sysgenned it and made it bootable). Using Anadisk, I can see the directory, and the 2-1 skew that Anadisk reports allows me to read dump.asm in its correct order. However, the disk definition that I built for 22disk doesn't work. I can read the directory and I can copy the files to DOS, but they appear as if the interleave is incorrect, since dump.asm is jumbled on 256 byte boundaries. The entire file _is_ present. I didn't have any more time last night to check and see just _how_ it is jumbled. Question #2. Does anyone have the disk definition for 22disk for the Bondwell 2? Bill

25 years, 8 months

7
9
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Lisa 2 Keyboard/Mouse substitute?

by CordaAJ＠nswc.navy.mil

I happened across a Lisa 2 (Model A6SB100) this past weekend...Seems to be in fair (restorable) shape. The nicads on the I/O board are corroded, but that's easy to fix. Unfortunately, the Keyboard and mouse are missing. Does anyone know if I can substitute a keyboard and mouse from an early Mac? (the ones with the non-adb keyboards and db9-connector mice). I don't mind hacking the connectors, if someone can give me the pinout info. As far as I can tell, the lisa uses some sort of mini-db9 for the mouse, and a 1/4" headphone-jack for the keyboard (weird!) If this isn't possible, I'd appreciate any hints as to where I might find a lisa keyboard/mouse (be nice now! :-) This critter also came with an Apple Profile (model A9M0005) external hard disk that seems to attach via a db-25 cable (to the lisa's parallel port?) I noticed that one of the pins on the lisa's parallel port connector(db-25 female)is blocked with epoxy (probably to prevent people from connecting a serial cable to it). Can I simply use a straight-through db25 cable (with the blocked pin removed) to connect the profile to the lisa, or did apple use some sort of proprietary wiring scheme? -Thanks! -al -acorda(a)1bigred.com

25 years, 8 months

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H-89....

by rigdonj＠intellistar.net

Gene, I was scanning some other stuff and found an ad for the H-89 in the Dec 1980 issue of Byte magazine. I scanned it and posted it at "www.intellistar.net/~rigdonj/misc/h89.jpg" in case you want to see it. I have haven't edited it or changed the image size or anything so it's big. I also have a scan of the full page that it was on if you want it. It's at "www.intellistar.net/~rigdonj/1980byte/page 258.jpg". I'll scan the Heathkit catalog when I get a chance. Joe At 07:13 PM 10/27/00 -0700, you wrote: >> >putting all the manuals online as PDF files. Is there any interest in >> >this? All the searching I've done on the net for H-8/11/88/89 info has >> >turned up a pitiful lack of info. If you've got anything you'd like to >> >see on a dedicated Heathkit computer page, please let me know. >> >> >> Cool Gene. I have an old Heathkit catalog that lists the H-89. If you >> like, I'll scan it and you can add it to your website. >> >That would be great Joe! It would give me an idea of what was available >for the machine, and what parts & docs I have to chase down. :) > >g. > > >

25 years, 8 months

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An article on the ZX-81 kits still being sold in the US

by Glenatacme＠aol.com

In a message dated 10/07/2000 3:06:26 PM Eastern Daylight Time, vcf(a)siconic.com writes: > http://www.theregister.co.uk/content/2/13785.html Talk about shoddy journalism! The Z80A included in these kits is certainly *not* a "1 MHz" processor, and the kits -- like all ZX81s -- have only 1 KB RAM onboard, not 2 KB as stated in the article. Also, this piece claims that the kits were obtained from Timex when in fact they were not. They were sold to Zebra by Sinclair Research USA when Sinclair discontinued sales in the USA. > These guys are a bunch of clowns. They used to be selling these for > $29.95 until the eBay phenomenon hit. Then they jacked up the price to > $99.95. I guess they must be selling these at that price because they > haven't backed it down. Zebra raised the price incrementally, from $29.95 to $39.95 to $49.95, then a big jump to $99.95. The *big* increase occurred when Zebra sold a substantial portion of their inventory to Chris Cowley, head of Grok Developments (mentioned in the above article). Cowley has to sell the kits for over $100 US in order to cover the cost of the kits plus freight and import duties, plus his profit. So, Zebra just jacked up the US price to match. Price fixing, anyone? BTW, back in March I was on the phone with Stewart Newfeld, head of Zebra, and he mentioned some unusual high-res graphics boards that he had. We settled on quantity and price, and I sent my payment. Everything arrived except the HRG boards, but a note in the box stated that they would forward them "as soon as possible." To date they haven't delivered, won't return my e-mails or phone calls, and still owe me $60 worth of merchandise. > Is an unassembled ZX-81 kit worth $99.95 to me? Hell no. Especially since the kits sold by Zebra do not include the original Sinclair BASIC manual or original assembly instructions (instructions are included -- they're just not the original issue). Additionally, Zebra themselves sell these kits on Ebay for $50 - $70 all the time. Clowns, indeed. Glen 0/0

25 years, 8 months

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SBC80/10

by jjackson＠salsa-digital.com

Hey folks, Rummagng through my pile of stuff - came across this... SBC80/10 Single Board Computer (Intel) I have both the Hardware Reference Manual and the PCB that goes with it. (I believe that it's a Multi-Bus I card form factor.) It looks like it is complete... some missing chips on the parallel I/O (I think that these are just MC1488's or MC1489's), and some PROMs. It has a monitor PROM plugged in, so should come up as-is. I also have another board that I stored with this one... looks like a memory board... the part number on it is... 16Kx8/450 RAM Module. ------ Is there any interest in this? Regards, James Jackson

25 years, 8 months

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OpenVMS Hobbyist License Question

by cmcmanis＠mcmanis.com

At 10:52 PM 10/27/00 -0400, you wrote: >I just went through this. I've been through it many times. :-) >The Montagar site has all you need but the docs that come with the cd are >dense and not very explanatory. Hah! This is an understatement. I was really only successful/comfortable when I got one of the ConDist sets and used those docs. >Here is what you need to do. {edited for brevity] Another way to say this is to give the general algorithm. If you can boot the media you will probably come up in standalone backup. The magic then is to type: $ BACKUP/IMAGE/VERIFY [src]VMSxxx.B/save_set [dst] Since I'm precluded from using HTML to express this a bit more clearly, allow me to elucidate on the variable parts: [src] and [dst] are device specifiers. Before you booted your VAX you had to do a 'show device' to see what devices it knew about, the src device is the CD-ROM (usually DKAxxx or DKBxxx on a VaxStation/Microvax, but will usually be DUAx or DUBx if you are booting from a MSCP type SCSI controller) If you're using tape then the device will be something like MUA0 or MKA0 etc. The filename VMSxxx.B changes only based on the version of VMS, so VMS 7.2 is VMS072.B whereas VMS 5.5 is VMS055.B. You should use the switch /VERIFY so that you know the disk is good before booting it. You must use the switch /IMAGE because you are copying over the complete disk (no formatting, fdisking, or anything else usually needed) You must use the switch /SAVE_SET to tell backup that you're restoring from a saveset. Once this command finishes you can now halt and boot from the [dst] drive and the first part of VMS will come up. >Don't bother with the registration dialogs at this point, just answer that >you don't want to right now. The dialogs did not work for me but the >command-line reg did just fine. This was true for me until I figured out what fields went with what. Note that in the PAK shown below: >$! Usage of this licenses consistutes agreement with all terms of this >Hobbyist $! License Agreement >$! >$ LICENSE REGISTER VAX-VMS - > /ACTIVITY=A - > /AUTHORIZATION=DECUS-USA-freeman-154786 - > /DATE=27-OCT-2001 - > /HARDWARE_ID=cz409027NS - > /ISSUER=DECUS - > /OPTIONS=(NO_SHARE) - > /PRODUCER=DEC - > /TERMINATION=27-OCT-2001 - > /UNITS=0 - > /CHECKSUM=1-QAGH-DECE-FPED-KMHI The date and termination date are the same. (Actually this is probably a valid PAK :-) This threw me off for a while. Note that you can use the layered products on _all_ your VAXen with the same PAKs so you don't need to get them more than once (and if you ask for them again you will get the same ones you got the first time.) Typically what I do at this point (registering PAKs) is to register the VAX-VMS PAK and the UCX PAK. Note that TCP-IP is on the Montagar disk. Once you log in as system you can then install TCP/IP using: @SYS$UPDATE:VMSINSTALL TCPIP_VAX050 [src]:[TCPIP_VAX050.KIT] And then run TCPIP$CONFIG once TCPIP is loaded. Now with that running and FTP enabled, you can ftp over the rest of the layered software PAKS (they are sent as a DCL script) and type: $ @LAYERED.COM (use whatever name you put it in as) And it will install licenses for everything. [important note: make sure you delete the UCX license out of the full set since if you don't you will get a "duplicate" and the script will stop.] >Nothing will happen, you will get a prompt. This is good and means that >the product is now registered. If it complains then you missed a character >or something. After registering a PAK manually you should type: $ LICEN LOAD VAX-VMS to insure it is loaded. Anyway, I've done this about a dozen times now so its getting to be fairly familiar :-) --Chuck

25 years, 8 months

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MULTICS Installation, Halifax

by dhquebbeman＠theestopinalgroup.com

> [Mythical PDP-10 emulator?] > > Mine's not mythical - It just doesn't work yet. Sorry, Daniel- the stress level's been up this week. Once it's working to your (initial?) satisfaction, how do you plan deployment and/or availability? -dq

25 years, 8 months

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KA650 in MicroVAX BA123?

by PeksaDO＠Cardiff.ac.uk

I have a MicroVAX II which has been upgraded to a MicroVAX 3. I say MicroVAX 3 because that is what is on the upgrade decal and the DEC instruction booklet refers to the upgrade as a Microvax 3. Are there MicroVAX III decals out there, is the MicroVAX 3 decal unusual, or are both common? Doug.

25 years, 8 months

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RS6000 memory boards

by mtapley＠swri.edu

Date: Sun, 5 Nov 2000 13:32:29 -0800 (PST) From: Cameron Kaiser <spectre(a)stockholm.ptloma.edu> Subject: Re: RS6000 memory boards Enrico Badella <enrico.badella(a)softstar.it> wrote: >> Yesterday I saved two IBM RS6000 server; one 7013/59H and one 7013/530H. ... >> should I just junk the whole things and just save the four SCSI disks? > Then Cameron Kaiser <spectre(a)stockholm.ptloma.edu> said: >That's what I would do. The old RS6K servers are quite tough to find support >for ... Keep the disks for something that can really use 'em. > >However, if you still want to take a whack at it, sometimes people are >selling equipment on comp.unix.aix. The prices can be quite confiscatory, >though. Whoa, there. Sitting in my office, still looking dark and forlorn, is a PowerStation 320 (Type 7012). A large part of its forlornness is due to its having had its mouse and keyboard "liberated" at some point in its life. The ugly part is it doesn't need just any PS/2 KB and 3-button mouse, but a special IBM one. (Thanks to Philip Belben <Philip.Belben(a)powertech.co.uk> for this clue. Philip, I still have not had time to seriously attack this machine.) Enrico, I don't know that I can pay to ship them from Italy to San Antonio, Texas but if your machines include those and you can't find a European stockpile to add those to, please contact me. Please *don't* junk those parts! If the machines you are talking about contain MCA Ethernet cards, the same applies to them, and again I might be interested in trying to get them shipped to Texas. Cameron, thanks for the newsgroup pointer, it's in my read list now. Anyone else with spare RS6K keyboards and mice taking up some of their valuable storage space, I think I can help you. :-) - Mark PS my last messagee appeared twice. My apologies; I can't figure out how I did that. If it happens again, somebody please send a clue?

25 years, 8 months

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TK50 tapes for "free"

by cmcmanis＠mcmanis.com

I've got about 20 TK50 tapes that are available for no cost. The catch is that they are in Sunnyvale CA and if you can't come pick them up then you'll need to pay postage to your address. These tapes have been bulk erased and can be used in either the TK50 (95MB) or the TK70 (295MB) tape drive, the caveat is that if you initialize one on a TK50 drive, then the TK70 will read it but not write it, if you initialize it on the TK70 drive then the TK50 won't be able to read it. I refer you back to the archives to refresh your memory that magnetically the specs for CompacTape I and CompacTape II are identical. --Chuck

25 years, 8 months

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Lisa 2 Keyboard/Mouse substitute?

by rigdonj＠intellistar.net

Hi, AFIK there is no substitute for the Lisa keyboard. However I'm told that the mouse used on the early Macs will work on the Lisa. I think the plug on the Lisa mouse has some plastic pins that are missing on the Mac mouse and the plus has a slightly different shape. Joe At 04:33 PM 11/6/00 -0500, you wrote: > >I happened across a Lisa 2 (Model A6SB100) >this past weekend...Seems to be in fair >(restorable) shape. The nicads on the >I/O board are corroded, but that's easy >to fix. Unfortunately, the Keyboard >and mouse are missing. > >Does anyone know if I can substitute >a keyboard and mouse from an early Mac? >(the ones with the non-adb keyboards >and db9-connector mice). I don't mind >hacking the connectors, if someone can >give me the pinout info. As far as I >can tell, the lisa uses some sort of >mini-db9 for the mouse, and a 1/4" >headphone-jack for the keyboard (weird!) > >If this isn't possible, I'd appreciate >any hints as to where I might find a >lisa keyboard/mouse (be nice now! :-) > >This critter also came with an Apple Profile >(model A9M0005) external hard disk that >seems to attach via a db-25 cable (to >the lisa's parallel port?) I noticed >that one of the pins on the lisa's >parallel port connector(db-25 female)is >blocked with epoxy (probably to prevent >people from connecting a serial cable >to it). Can I simply use a straight-through >db25 cable (with the blocked pin removed) >to connect the profile to the lisa, or >did apple use some sort of proprietary >wiring scheme? > >-Thanks! > >-al >-acorda(a)1bigred.com > > >

25 years, 8 months

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Totaly OT: IBM eServer z900

by Hans.Franke＠mch20.sbs.de

Just recently IBM anounced their new series of (real) mainframes. now called zServer(running zOS and zWhatever). They are supposed to be the follow up architecture of the /390 ISA and will add 64 Bit Software to the /390 world ... And here comes my problem: I can't imagine any way to enhance the /370 (/390) ISA to do such tricks at all without loosing compatibility. It would require a complete new 'mode', almost like Intel had with 16 vs 32 Bit on the 80386, Mode switching an tons of incompatibilities - it took almost 20 years to move the mainframe world from 24 to 31 Bit addressing (and 24 Bit mode is still required for some apps and modules) - and we are talking just about the valid bits of an address word (allwas 32 Bit since the 60s) - introducing new operations and data formats (or at least the usage of known but rarely supported double word size registers) is quite a different task. So what I'm searchin are informations about the new ISA. Any info is apreciated. And yes, I tried to ask IBM, (last attempt today in persona at their 'booth' at the SYSTEMS) but there is no info available. I know this is off topic, since the z900 isn't even for sale by now, but getting information is not only hard becaus IBM doen't offer it, but because the people who know what a /370 ISA is are vanishing .... so any help is apreciated. Gruss H. -- VCF Europa 2.0 am 28./29. April 2001 in Muenchen http://www.vintage.org/vcfe http://www.homecomputer.de/vcfe

25 years, 8 months

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Update:RE: FS Heathkit EC-1

by badger＠vbe.com

Thanks everyone who sent me offers and information on the computer. I think it will be destined for sale on eBay where I can let the market set the price..... the offers were so far ranging that I feel that it would be the best way to sell it and a search revealed three others that had sold there recently. I'll include a copy of email I sent to several who were interested in it's actual condition after I had a chance to look it over. I brought it home last night and checked it all over as mentioned below. I hope to have it placed on eBay this weekend unless I break down and sell it to a reasonable offer off the net or at a ham/computer fest I'm attending on Sunday. There is a pic of the computer at http://www.vbe.com/~badger/bc/ec1a.jpg Again..... thanks for your interest and all the information. de Mike Melland, W9WIS <copy> Last night I took the EC-1 and the other instruments I purchased at the surplus sale home. I cleaned up the EC-1 and checked the tubes, caps and all the circuits. I applied a little Caig Deoxit and with a bit of time and care and was able to free up all the potentiometers that were stiff or frozen. It appears to have been a factory built version that was sold to the college...... very nicely built and laid out. The cabinet has a few small scratches... easily touched up... no dings or dents. The rubber feet are still in place on the bottom. Inside, while quite dusty when I received it has been cleaned up and is very nice. Tubes and Caps and all wiring and pots check out fine. After checking things over it went onto my isolated variac and was slowly powered up..... lit up fine, adjusted B+ voltage.. was still right on the money. Used the manual to set it up and adjust the individual amp balance, all three ranges on each amp (100,10,1) balanced just fine. Everything seems to work and adjust properly at this time so I assume it's quite usable. The manual I have for it is an operation manual..... apparently there is a construction manual that would have come with it if it was a kit version as well. Also has three of those little clear plugin units with a cap and a precision resistor....

25 years, 8 months

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System/36 still sleepin' Suggestions?

by mcguire＠neurotica.com

On November 4, THETechnoid(a)home.com wrote: > I checked the line voltage on the outlet and found it right at 250-253vac > without a load. This circuit is rated at 30AMP, the machine's breaker is > rated at 20AMP, and the machine is supposed to pull a max 8amp on the line > making all things reasonable. > > So why no power-on? Nothing spins, no lights on the front-panel, nothing > but the first-stage of the power supply humming slightly. You mentioned safetey interlocks...Maybe there's a panel interlock that got jiggled during the move? Try removing and re-seating every outside panel that you can find. Have you tried connecting a console terminal to it yet? This may be way off (I don't know anything about S36 hardware) but an acquaintance of mine once beat his head against a wall for two days trying to power up a VAX 8700. As it turns out, you do this by typing a command on the console processor (a DEC Pro machine) which he hadn't connected yet. And...remember the "power-off" command in newer Sun OBP ROMs? A favorite joke around here is 'why can't I type "power-on" to turn it back on!!' ...but on newer Alpha machines (DS10, etc), you *CAN*. There's a PIC17C44 processor in there handling console operations that has its own little power supply. You can power-cycle the meat of the machine from a [potentially remote] console port. -Dave McGuire

25 years, 8 months

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EC-1 fiasco....

by badger＠vbe.com

Date: Fri, 03 Nov 2000 12:54:39 -0600 From:Michael Melland <badger(a)vbe.com> To: Chuck McManis <cmcmanis(a)mcmanis.com> Chuck McManis wrote: > No, this is disingenuous at best. You really meant to say that none of the > offers matched what you saw someone get on Ebay and your greed took over. > Not surprisingly it is exceptionally rude to "offer something for sale" and > then to actually not sell it. Had you an ounce of integrity you would have > sold it to whomever sent you the "best offer." Chuck, Better read my original post again: > I have a Heathkit EC-1 Educational Analog Computer with original > manual I'd like to sell. The computer is in unknown functional > condition (I don't know if it works right or not) but it looks pretty > good. I'd guess I'd have to sell it as unworking. All the parts are > there but some of the knobs are "stiff". This EC-1 was in storage > since the 1970's ...... it was with some electronic test equipment I > purchased at a surplus sale at a college. > > If you have an idea of it's worth .... either to a collector or as a > parts unit please email me at badger(a)vbe.com What I asked for I got...... an estimate of its worth. I did not say that I was accepting bids.... they just came in.... If I had stated that I'd sell it to the high bidder I would have, but that's not what I asked for..... what I did receive is a number of very informative posts with value estimates and suggestions for places to offer it for sale..... eBay was the most suggested venue. I really don't care how it sells or if it sells..... it's just "surplus" to me. I'm not into collecting computers..... now if it were electronic test equipment or communications gear that's another story. >From my perspective I was asking for help in assaying the value of this piece I wanted to sell. I do appreciate the offers to purchase (most) and especially those persons that sent me information on the EC-1 and warned me that I might receive low ball offers from my post. Some were... and had I not received replies from several very helpful individuals I'd probably provided someone with real "steal" . I didn't send angry email to those who made an offer that some would (not I) perceive as trying to take advantage of my ignorance. In retrospect after looking at the title of my post it should have said "Value of EC-1 wanted"..... sorry if this was confusing. If you are still bitching about selling it to the one making the best offer..... go to eBay and bid along with those who may know it's value. At any rate the your generous offer of $100 was far from the highest I received. Mike Melland

25 years, 8 months

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Funny OPcodes

by jhellige＠earthlink.net

All of these puns concerning mental DECay made me think of a post I saw on COMP.SYS.TANDY last week. Excuse the length, but I thought some of you might find it amusing. > >This sounds like a variation on the Motorolla HCF (Halt & Catch Fire) >instruction legend. > >bill > Ah, yes. Here is the original document I downloaded from a BBS in the 80's.... * * * * * THE COCO RUMOR MILL IT HAS BEEN RUMORED THAT TANDY (MOTOROLA) IS WORKING ON A COCO III COMPUTER TO BE RELEASED SHORTLY. AT PRESENT THE ONLY ADVANCE INFORMATION AVAILABLE IS THAT A NEW MICROPROCESSOR WILL BE INCORPORATED INTO THE UNIT-- THE 6813! OUR RESEARCH STAFF HAS BEEN ABLE TO UNCOVER A LIST OF NEW OPCODES THAT DISTINGUISH THE 6813 AS A BREAKTHROUGH IN COMPUTER TECHNOLOGY. THE LIST IS PRESENTED HERE FOR YOUR INFORMATION. ABBA - PLAY SWEDISH ROCK ADGB - ADD GARBAGE BAD - BARK AT DOG BBL - BRANCH ON BURNED OUT LIGHT BAH - BRANCH AND HANG BFEI - BEG FOR EXPANSION INTERFACE BLI - BRANCH AND LOOP INFINITE BPB - BRANCH ON PROGRAM BUG BPO - BRANCH IF POWER OFF BPM - BEGIN PIRATE MODE BRN - BURN UP SAM CHIP CFP - CALL FOR PROGRAMMER CLD - TRY TO COOL DOWN SAM CHIP CMS - CATCH MOUSE CNP - CALL NATIONAL PARTS CPB - CREATE PROGRAM BUG CPM - CORRECT PROGRAM MANUAL CRN - CONVERT TO ROMAN NUMERALS CSD - CREATE STATIC DISCHARGE DAO - DIVIDE AND OVERFLOW DEVO - START NEW WAVE (SINE) EIP - ERASE IF PIRATED ERS - ERASE READ-ONLY STORAGE ETOY - EMULATE ZX-81 HFA - HIRE FROM ATARI HCF - HALT AND CATCH FIRE HFC - HIDE FROM CHILDREN HFP - HIDE FROM PINTO HIC - HELP INTEL CHIP IAD - ILLOGICAL AND IBM - INTERUPT BAD MNEMONICS IOR - ILLOGICAL OR JOF - JUMP ON FLOOR JOM - JUMP ON MOTOROLA JOT - JUMP OFF TABLE JTZ - JUMP TO ZAXXON PROGRAM KAL - FLY OVER RUSSIA MDB - MULTIPLY AND DROP BITS MWK - MULTIPLY WORK NOPE - REFUSE TO DO ANYTHING OCD - OPEN COMMODE-DOOR PAS - PRINT AND SMEAR PIP - PULVERIZE INTERFACE PERIPHERAL PSD - PERFORM SAFETY DANCE RBT - READ AND BREAK TAPE REST - RELAX FOR 12 CYCLES RPM - READ PROGRAMMER'S MIND RRT - RECORD AND RIP TAPE RTR - REFUSE TO RUN RTM - RETURN TO MOTOROLA RTT - RETURN TO TANDY RSD - READ AND SCRAMBLE DATA RWD - REWIND DISK SINK - SINK INTO I.C. SOCKET SRZ - SUBTRACT AND RESET TO ZERO SSD - SEEK AND SCRATCH DISK STD - STOP TURNING DISK STI - SELL T.I. STOCK TLK - START SPEECH SYNTHESIS TPR - TEAR PAPER TRS - TRASH ('TRISS') PROGRAM WED - WRITE AND ERASE DATA WID - WRITE INVALID DATA WOJ - WEAR OUT JOYSTICK XBRA - GOTO ZOO XIO - EXECUTE INVALID OP CODE XOR - EXECUTE OPERATOR XPR - EXECUTE PROGRAMMER BESIDES HAVING THE ABOVE USER FRIENDLY OPCODES THE 6813 WILL ALSO HAVE 161 EASY TO REMEMBER ADDRESSING MODES! P.S. THERE IS NO WORD FROM TANDY AS TO WHEN WE MIGHT EXPECT THESE IMPROVEMENTS (THEYARE STILL TRYING TO FIGURE OUT WHAT A 6809 IS!). PERHAPS IN THE NEXT COMPUTER CATALOGUE. -- Power Computing PowerCurve, 400mhz G3, Mac OS 9.0.4 Collector of Classic Microcomputers and Video Game Systems: http://www.geocities.com/siliconvalley/lakes/6757

25 years, 8 months

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DEC wishlist (Looking for)

by cmcmanis＠mcmanis.com

I'm on the lookout for a couple of VAX items: VAX 4000/90 (preferred) or a VAX 4000/60 KA68x or a KA69x CPU to round out the "house of VAX" I've got a couple of VAXes I could trade if someone was looking to round out their VAX collection: MicroVAX II (BA23 or BA123 cabinet) VAXStation 3100/M76 in a BA42 type cabinet Various vaxish Q-bus boards. PDP-11/03 board set. (KDF11, DRJ11, etc) I'm always interested in things for PDP-8's, but high on my wishlist are the cable for an RK8E to the RK05, a couple of RK05 packs (one with OS/8 on it would be dandy :-) and those pesky top connectors that connect core stacks, CPUs, etc. In the PDP-11 space anything to add mass storage to my PDP-11/34 like an RK11-D or RL11 interface. Also available for trading: a CompuPro Z80 CPU (S100) manual and perhaps the "Inside CP/M" and Garetz S-100 bus books ae well. --Chuck

25 years, 8 months

3
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Lisa mystery switch

by Marion.Bates＠dartmouth.edu

--- Seth wrote: On Sat, Nov 04, 2000 at 02:09:27PM -0500, Marion Bates wrote: > Any idea about the Mystery Switch? This is the "Magic / More Magic" switch. Leave the switch in the "More Magic" position. --- end of quote --- LOL. It did remind me of that story. :) If there's anyone on this list who doesn't know that tale, ask for a retelling. It's good. -- MB

25 years, 8 months

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The perfect description

by mtapley＠swri.edu

Tony Duell wrote: >'A few cards short of a full DEC' It doesn't get any better than that. That's the one I was trying to think of. Well said! - Mark

25 years, 8 months

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Vax 8350 offered to me -- worth getting it?

by ethan_dicks＠yahoo.com

--- Gene Buckle <geneb(a)deltasoft.com> wrote: > > I am being offered this computer. > > I used to have an 8250. The 8350 is (TMK) a dual CPU 8250. Right. I have an 8300, dual 8200 CPUs. > It's a VAXBI bus system and it's a lot of fun to play with. It will require > at least two 30A 110v circuits to run it. My 8300 is on one 30A Hubbel twist-n-loc I installed in my basement. It powers the CPU, a single RA81 and an MBA ESDI-to-SDI box (2.1Gb). I always power on the RA81 *first*, then let it settle, before firing up the other boxes (due to the surge current of the RA81 HDA). Fun little box. Watch out for the KDB50 - I never met one that wasn't finiky. -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!? Thousands of Stores. Millions of Products. All in one Place. http://shopping.yahoo.com/

25 years, 8 months

3
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KIM-1, SYM-1 or AIM-65 - anyone selling?

by philpem＠btinternet.com

Hi, I'm interested in getting a MOS Technologies KIM-1, Synertek SYM-1 or a Rockwell AIM-65. Has anyone got one for sale (preferably in the UK)? Thanks. -- Phil. philpem(a)bigfoot.com http://www.philpem.f9.co.uk/

25 years, 8 months

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