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

by jeflittl＠cisco.com

To All: Just in case anyone was interested, here are the schematics that I found for the Intercept Jr. and two of its accessory boards that were done about 1975 or 1976. Your's truly drew all three of these on the drawing board with pencil and straightedge. They were then turned into publishable versions by a graphic artist. The two boards plus a third one which had a number "devices" on it for lab demos made up the initial Intercept Jr. product set. This was used to support the original education classes that were based around this design. Still looking for listings of the micro-interpreter. This was the software that made use of the special keyboard and was embedded in the mask-programmed IM6312 ROM. You can see that the serial interface on the PIEART was arranged to support either an RS-232C interface or the old-fashioned 20ma current loop for communication with an ASR-33 Teletype. On the RAM module, the board held a set of two AA batteries to provide battery back-up on the RAM memory. It may be hard to believe but I do seem to remember that Intersil actually patented the little circuit in the upper right hand corner that prevented these batteries from being back-biased when the regular power was on and kicked them in gracefully when that power was lost. Regards, Jeff Little

17 years, 4 months

21
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TD Systems TDL-12 info... (QBus SCSI?)

by derschjo＠mail.msu.edu

I picked up what appears to be a dual-height QBus SCSI card (50-pin connector, and an NCR 5380 chip), labeled as a TDL-12 from T.D. Systems. Can't find anything much on the 'net (there was a posting to classiccmp a few years ago...). Anyone out there have any info on this? Thanks, Josh

17 years, 4 months

4
8
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Plugging : VT100 on epay

by hp-fix＠xs4all.nl

DEC VT100 item : 370190217282 It's not HP so it has to go. -Rik

17 years, 4 months

2
3
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Oxidation

by roger.holmes＠microspot.co.uk

On 19 Jan, 2009, at 05:10, cctalk-request at classiccmp.org wrote: >> The steel parts are fine, but the rest has a white material over >> most >> of it. I'm not sure what sort of metal it is, looks a bit dark for >> aluminum but the white material looks similar to aluminum oxidation. >> What's a good approach to cleaning it up? > > I seem to recall that the drums on 02x keypunches were brownish > (probably an anodized coating) and silver-metallic if you scratched > them or they wore through. I suspect that the drum is a magnesium- > aluminum die casting. > I always through they were rubber covered, but from the picture it looks like I'm wrong. My 836 (like an 026) came without its drum and I was told that all leased machines had their drums removed and the customer got to dispose of the rest. Maybe it was rubbish. A couple of them have come up on eBay in the last five years and both went for silly money which to me means there are more keypunches than drums. Roger Holmes.

17 years, 4 months

6
6
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A few free items

by chrism3667＠yahoo.com

Hi Mike, ?Interested in the 68020 ISA card if it's still available. Thanks. --- On Mon, 4/6/09, Mike Maginnis <mmaginnis at gmail.com> wrote: From: Mike Maginnis <mmaginnis at gmail.com> Subject: A few free items To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> Date: Monday, April 6, 2009, 5:02 PM A few items to give away. I came across a box of stuff as I was cleaning out the server room. Might be of interest to someone, might not.? I'd prefer local pickup (Denver, CO area), but could be persuaded to ship if you cover S/H. * CHIPS Enhanced Graphics Card Rev 1.0 ??? * Headland Technology 16-bit ISA VGA video card VGA-16 650-0122 (c) 1988 * GPIB IEEE-488 board, unknown manuf. 8-bit ISA.? "6323706 REV A 667523" printed on PCB, next to a logo like a palm tree with a small "2" next to it. * Adaptec AHA-1542B 16-bit ISA SCSI card * Unknown board from "The Palantir Corporation" (c) 1988 - has a Motorola 68020.? 16-bit ISA.? Maybe a co-processor board? * 5 9-track tapes,3M and Memorex. One is labeled "MultiNet 3.2 Rev A", another "MultiNet 3.2, Rev B".? Others are hand-labeled.? No idea what's actually on them.? They probably haven't been used since the early 90's. All of these items are untested and provided AS IS.? Anything unclaimed goes to the recycle bin. I'll put some images up tonight when I get home from work, if anyone's interested. - Mike

17 years, 4 months

2
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A few free items

by mmaginnis＠gmail.com

A few items to give away. I came across a box of stuff as I was cleaning out the server room. Might be of interest to someone, might not. I'd prefer local pickup (Denver, CO area), but could be persuaded to ship if you cover S/H. * CHIPS Enhanced Graphics Card Rev 1.0 * Headland Technology 16-bit ISA VGA video card VGA-16 650-0122 (c) 1988 * GPIB IEEE-488 board, unknown manuf. 8-bit ISA. "6323706 REV A 667523" printed on PCB, next to a logo like a palm tree with a small "2" next to it. * Adaptec AHA-1542B 16-bit ISA SCSI card * Unknown board from "The Palantir Corporation" (c) 1988 - has a Motorola 68020. 16-bit ISA. Maybe a co-processor board? * 5 9-track tapes,3M and Memorex. One is labeled "MultiNet 3.2 Rev A", another "MultiNet 3.2, Rev B". Others are hand-labeled. No idea what's actually on them. They probably haven't been used since the early 90's. All of these items are untested and provided AS IS. Anything unclaimed goes to the recycle bin. I'll put some images up tonight when I get home from work, if anyone's interested. - Mike

17 years, 4 months

2
2
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TDX Format Tapes?

by chertec＠pacific.net.sg

Hi Eric, Good day to you ! I found you through internet google under TDX FORMAT TAPES. These tapes are use for Production Test Program using Sentry Tester. Can I help you? What are going to do with these Tapes? I maybe able to help you. We are specialized in providing service to our Customers to repair/service Sentry Testers and as well as software development. Regards, Jimmy Lim CHERTEC SEMICONDUCTOR SERVICES Tel: +65-67491633 Fax: +65-67478429 21 Apr.2009

17 years, 4 months

1
0
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Looking for Monroe 8820 software and docs

by leaknoil＠comcast.net

I probably posted this before but, its been awhile so, here I go again. I have a Litton Monroe OC-8820 I would really like to play with. Only problem is no OS. It is an early 80's cp/m box. If anyone has access to a copy of the boot disks I would really love a copy. A few Monroe applications would make my day. There was a member of this list, Warren Wolfe (wizard at voyager.net) , that posted about having one of these around 2007. That email just bounces now and I can't find any trace of him since then. If anyone has a new email address for Warren hopefully he can help me.

17 years, 4 months

1
0
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8250 UART

by dgriffi＠cs.csubak.edu

Does anyone here want an 8250 UART? Free for shipping. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

17 years, 4 months

1
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HP83000: Wild shot in the dark

by doc＠vaxen.net

It's good to be back. I had to unsub because I changed jobs and lost my old email address, evidently just as subscriptions went AWOL. Preface: This is for a commercial environment, and work will be more than pleased to pay for anything we can use. The short version is that I need to support the HP/Agilent SmarTest suite on HP-UX 11.0 or later or Linux, controlling an HP83000 test frame. That requires a driver for the PCI optical interface to the 83000 mainframe. The card is marked E2777B, p/n A3850-0583 (SmarTest will not run if the interface is not detected). As far as I've been able to determine, there's no publicly released driver for any OS but 10.20, nor documentation for the interface card sufficient to write a driver in-house. The only drivers we've found come with the SmarTest suite. The problem is that SmarTest for the HP83k is only known to run in HP-UX 10.20, and 10.20 does not run at all on the PA-8700 CPUs in the j6700. There are patches to enable PA-8700, but they can be applied only to HP-UX 10.26 ("trusted" HPUX) and 10.30 (which HP apparently distributed for a VERY brief time). Our preferred solution would be to run SmarTest on HPUX 11i (or Linux or anything that will run on a machine faster than a C3600). One of our engineers is convinced that there was, probably internal to Agilent, a version of SmarTest that supported HP-UX 11.0 and the HP83K. However, Agilent has sold all that to another company which would basically like to forget that the HP83000 ever existed. Finally, although the HP83000 API is well-documented and there is software to replace SmarTest, this company has a huge investment in SmarTest test programs and would like to avoid porting them. Same goes for moving to HP93000 test frames or later, with the addition expense of the hardware. So. I'm looking for, in order of preference: A Linux version of SmarTest (which exists) *with* kernel drivers for the E2777B interface card (which Verigy denies exists). A 64-bit HP-UX 11/11i driver for that card. Extra points if it's ia64. Someone who has the resources and immediate time to develop one of the above, or to design a "shim" such that SmarTest running on Linux connects to the C3600 with the optical interface but thinks it's talking to the card. A copy of HP-UX 10.30 or 10.26 for s700. Actually, I think 10.26 was available only for s800. Again, we're not looking to bypass or violate any licensing or copyright. We just can't locate even anyone who will discuss this. Doc Shipley

17 years, 4 months

2
1
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Source for bipolar PROMs?

by snhirsch＠gmail.com

Does anyone have a pet source for: DM74S287 DM74S571 ?? Jameco has the first part number at 13.00 each (ouch) and there are some on eBay at nearly that. The 571 seems to be pure unobtanium, unless you count 50 hits of *&ssholes who want you to submit an RFQ and won't deal under $250 a shot. I need a small number (~5-6) of each. Steve --

17 years, 4 months

22
31
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Mass storage for an 9825A

by vp＠drexel.edu

Hi, I am trying to get my 9825A to exchange programs, data with the outside world and I am not making any progress. The 9825A has a working tape drive, but as I only have Series 80 stuff here (which use the same tapes, but different formats), this only allows me to save/restore my own stuff. The 9825A also has an HP-IB interface (thats the only interface I've got for it), but I have trouble connecting a floppy drive to it as the mass storage ROM that supports HP-IB drives only works with the 9825T. Bummer! I have the System ROM which allows ASCII programs to be"typed" >from an external device, but I would like to be able to have access to the program collections available on floppy images (e.g. the files on the diagnostic tape). So any ideas - suggestions? Thanks **vp www.series80.org

17 years, 4 months

2
1
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Using a 3.5" 720k disk...

by geneb＠deltasoft.com

...and tricking the computer into thinking it's a 5.25" hard sectored disk...in an H8.. [This is from the sehbc Heathkit list - I figured there may be some interested in what he's done] ------------------- On Friday (04/17/2009 at 07:12PM -0700), dwight elvey wrote: > > Hi Chris > How did you solve the problem of the speed changes > while the disk is spinning? Several people have tried > to do this so we are all wondering. > Also, have you checked several different drive > manufactures. Each has a little different quality > of speed control. Most all 3.5s are crystal or resonator > controlled so the average speed is usually right on > but the speed caqn drift from revolution to revolution > around that value. Hi Dwight... I will admit that this little project took a lot more effort than I initially expected-- and Carroll W can confirm that!! We were both working on the problem from different directions. He provided a lot of info in the beginning which laid the ground work for me. I use an ATMEL ATTiny2313 microcontroller and make heavy use of one of the timer/counter units. I have the counter running at 8 MHz/64 = 8uS period. Then, each time MOTOR ON goes true, I waste two revs of the media "figuring things out". The first rev is completely ignored as I assume the media is probably not up to speed yet. The second rev is used to calculate the speed of the media. I count the total number of 8uS ticks that occurred over that rev, divide by 200 (one rev should take 200mS) and the result is the number of ticks per mS in "floppy time". I then use this value to stage the pseudo pulses starting at the next real index pulse. The code is as simple then as, PulseAt00(); PulseAt10(); PulseAt10(); PulseAt20(); PulseAt20(); PulseAt20(); PulseAt20(); PulseAt20(); PulseAt20(); PulseAt20(); PulseAt20(); where each of those is a simple delay that counts the number of ticks of the timer/counter to equal the required number of milliseconds and then it generates an index pulse. The timing is done in the hardware by the timer/counter unit and I am simply clearing and then polling that counter to determine when its the right time to move on. I have tested with three different brands of floppy drives. Two were a success and one was an abysmal failure. Sony MPF920 work real nice. Teac FD-235F also work great and Samsung SFD-321B are useless-- because they have made them so cheap that they do not even support 720K media any more. The density sense switch is completely missing from the drive, and they are forced to always run in 1.44M (500kbps MFM) mode. That's a show stopper since for the H-17/H-88-1 we need 250Kbps MFM mode which is what 720K 3.5" media uses. I use 1.44M floppies but then cover up the high-density hole with a piece of tape, which makes them 720K media then. Anyway, I did a lot of testing... a lot of scoping-- with my digital scope and logic analyzer and I'm pretty confident this is a reliable solution. The success with "TEST17" on HDOS was the final sign-off and that is consistent now with either of the good drives and exchanging the media between them. I make no attempt to support multiple drives with one microcontroller-- because they are so cheap, I just put one per drive and then I don't have to manage state tables for more than one, etc. I just use the RC oscillator as the clock for the micro too-- so there's no crystals or osc to wire up. Since it recomputes the tick counter each time the motor turns on, if the processor clock has drifted, that gets accounted for in the recalculation-- but my experience is that these AVRs are pretty stable across typical room temp conditions anyway. I think the thing that stumped me the longest was that I was not disabling my INDEX output fast enough when the drive was deselected. I ended up with a 74LS38 external to the micro to solve this problem-- which then also gives me lots of drive back to the controller and a true open collector output which can be bussed on the floppy cable just like any other drive. Chris -- Chris Elmquist --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "SEBHC" group. To post to this group, send email to sebhc at googlegroups.com To unsubscribe from this group, send email to sebhc+unsubscribe at googlegroups.com For more options, visit this group at http://groups.google.com/group/sebhc?hl=en -~----------~----~----~----~------~----~------~--~---

17 years, 4 months

5
7
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IBM 5150

by rborsuk＠colourfull.com

Hi All, Just put my IBM 5150 w/ 286 accelerator on eBay if anyone is interested in one. Item # 300309315276 Rob Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 4 months

1
0
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Found this interesting use of old hardware

by wbblair3＠yahoo.com

Queen Bohemian Rhapsody Old School Computer Remix Atari 800XL was used for the lead piano/organ sound Texas Instruments TI-99/4a as lead guitar 8 Inch Floppy Disk as Bass 3.5 inch Harddrive as the gong HP ScanJet 3C was used for all vocals. http://www.youtube.com/watch?v=Ht96HJ01SE4

17 years, 4 months

3
2
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HP 59401A HP-IB analyzer (was Remapping the HP150 keyboard)

by vp＠drexel.edu

"Rik Bos" <hp-fix at xs4all.nl> wrote: > It's fun to look at the HP-IB(us) the display flickers nice, but is there > realy meaning full use for these analyzers ? I have one of these as well. Mine is in excellent condition. I did use it to debug an HP 59309A Digital Clock and it was quite useful (although without the service manual for the 59309A I wouldn't have gone far). I also used the HP 59401A to help me understand the Amigo protocol for a floppy emulator. So its useful, but its slow and cumbersome (its fun entering HP-IB commands using the switches on the front when playing around, but for recurrent and complex tasks you'd rather use a computer). You can't even leave it connected to the HP-IB bus all the time, because it slows it down and causes some devices to complain. Nevertheless its a great addition to any "blinkenlights" display. **vp www.series80.org

17 years, 4 months

1
0
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Remapping the HP150 keyboard

by ard＠p850ug1.demon.co.uk

For Rik and anyone else who's still folling the saga of the HP120 keyboard, I've now hacked an HP150 keyboard to make it HP120-compatible. Here are some details... As we all know by now, the HP150 keyboard has the right interface to plug into an HP120, it's just that the keys are sent in the wrong order. The scanning is done by a 4024 7 bit counter inside the keyboard, my idea was to replace with with a circuit that was essentially a counter with a non-standard count sequence to select the keys in the order needed by the HP120. And the obvious way of doing that is simply a 7 bit counter followed by a ROM acting as a lookup table to do the code conversion. Of course it's not quite as simple as that (things never are!). The main problem is that HP120 keyboard runs at 12V internally (it's all 4000-series CMOS logic chips). And most common EPROMs run at 5V. I ended up with a board containing 5 chips and a 7805 voltage regulator. This links by a short length of ribbon cable and a 14 pin DIL header to a socket which I fitted in place of the scan counter chip (a 4024 at location M2) on the HP150 keyboard PCB. All the new chips run off the 5V output of that 7805. Here's a brief circuit description : 2 sections of a 4050 hex buffer takes the clock and reset signals from the HP150 keyboard PCB (these are the signals that would have controlled that 4024). It doesn't seem to be generally known (but it's in all the data sheets I've looked at) that the 4050 (and its inverting brother the 4049) can take inputs up to 15V even when run off a lower supply voltage. They are intended for level-shifting from CMOS voltages to TTL. And unlike the older 4009 and 4010 (which they replace) they only need the 5V power line, not a second power line corresponding to the input voltage. The outputs of that buffer go to a 4024 7 bit counter in the obvious way. The outputs of that go to the bottom 7 address lines (A0...A6) of a 27C64 EPROM. A7 goes to a switch and pull-up resistor so I can select between 2 key mappings (HP120 and HP150 mode). The remaining address lines, CE/ and OE/ are all grounded. Why use such a large EPROM? It was the first CMOS one I found in the junk box :-). The outputs of the EPROM are, of course at TTL levels, and need to be level-shifted back to 12V to drive the CMOS logic in the keyboard. I used 7 sections of 74LS07 (so 2 packages total) with 3k3 pull-up resistors to +12V The EPROM cotnains 2 128-byte tables. The first one (locations 00-7f) gives the remapping for the HP120 mode. The second one (locations 80-ff) cotnains the values 00-7f in order, thus keeping the keys in the original sequence for the HP150 mode. Anyway, I soldered it up. I worked out the correct data for the first half of the EPROM, I programmed the EPROM. And I tried it out. Most of the keys worked correctly, but some, including f8 did nothing. While fiddling around, I found f8 _sometimes_ worked. Oh great, I've got an intermittant fault. So I grabbed the LogicDart. While looking at the scan drive signals (the outputs of the 74ls07s), I noticed some glitches on some of them, doubtless due to the fact that the 4024 is a fairly slow ripple counter. Thinking that was the problem, I decied that maybe a 74HCT4024 would help. Alas my junk box doesn't contain much in the way of HCT chips, but I did find a 74HCT4040 which is a 12 bit ripple counter of a totally different pinout. One header plug, One DIL socket, and lots of wire later and I'd kludged up an adapter. Plugged it in. No change. Glitches still there, f8 works intermittantly. I did discover (by comparison with the HP262x keybaord I'd already got working) that the effects of some keys are not noticeable in 'Local' mode unless you turn 'Display Functions' on (this displays control codes on the screen rather than executing them). I did this and found that essentially only 2 keys on the HP150 keybaord were dodgy. Hmmm Finally I put the LogicDart on the signal I should have looked at in the first place -- namely the data line back to the HP120. And I found that when the key didn't work, there was nothing on that line. No glitches, just nothing. The output of the scan decoder (4028) in the HP150 keyboard was hehaving correctly, as far as I could tell, all the time. The input to the row multiplexer (4051) wasn't. Between them, of coruse, are the key switches and their diodes.] And yes, you guessed it. The dodgy keys had dodgy keyswitches. All my hackery was working find. Dismantling the keyboard assembly (lots of little screws), a squirt of contact cleaner, and it seems OK now. All I have to do is box it up. The new board will have to go in a plastic box screwed to the top of the keyboard. But I want to get things just right before I start drilling holes. -tony

17 years, 4 months

9
28
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home brew S-100 backplane project

by lynchaj＠yahoo.com

> -----Original Message----- > From: Andrew Lynch [mailto:lynchaj at yahoo.com] > Sent: Friday, April 17, 2009 10:29 AM > To: 'cctalk at classiccmp.org' > Subject: home brew S-100 backplane project > > Hi!? I've been working on a home brew S-100 backplane as a side project [snip] Hi! The experimental prototype S-100 backplanes will be available in about 3 weeks. They will cost $32 each plus shipping which should be $2 in the US and $5 overseas. All the parts are common and available from the usual suppliers such as Mouser, Digikey, etc. Thanks and have a nice day! Andrew Lynch

17 years, 4 months

3
2
0 0

Tru64 and HP-UX swap

by john_finigan＠yahoo.com

I'm looking for install CD images for HP-UX 10.30, 10.20, and 9.X (series 700), and also Digital Unix 4.0X. If anybody has one of these and is interested in getting CD images for Tru64 5.1A or HP-UX 11i v1 in trade, please email me off list. Please note that 5.1A won't install on DEC 3000, as far as I know (certainly won't on my 3000 model 300). Thanks, John

17 years, 4 months

1
0
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looking for Metroworks CodeWarrior Pro 4 (or higher)

by spectre＠floodgap.com

I'm doing some classic Mac development and one of the projects I'm trying to update requires at least MetroWorks CodeWarrior Pro 4 or higher (I presume 5 or 6 would also work for Classic MacOS). Anyone out there getting rid of this, would be willing to sell theirs, or know where I can purchase it? Metroworks seems to have been bought out by Freescale and they don't offer any of their old MacOS development tools anymore. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Roger Waters to moving crew: "Hey! Careful with those racks, Eugene!" ------

17 years, 4 months

1
0
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Shimatronic knitting machine controller PC

by david_comley＠yahoo.com

--- On Sat, 4/18/09, Gordon JC Pearce MM3YEQ <gordonjcp at gjcp.net> wrote: > Bit of an odd one this, rescued along > with a Seiko graphics tablet (but > no puck) and a 15" rather nice Sony monitor that needs > 110V. > Certainly would be unusual. IIRC, Shima Seiki made their name in CNC circular knitting machines (that is, CNC machines that could knit tubular shapes like socks and gloves) and were in that field for many years, and according to their web site they still are around. The machine you have could have been a fabric design workstation although by the time of the 286 and 68000's Shima had branched out into more general purpose 2D CAD and paint systems. The company I worked for in the late 80's had 14 HDTV versions of the Shima Seiki paint system in the UK and Germany, and one low-res version which I think may be similar what you have found. I looked after them for a couple of years. They were certainly multi-processor in nature. I believe these were among the first NHK (analog) HDTV systems installed in Europe, using Sony HDTV monitors, and we established quite a close relationship with Sony Europe as a result. We were all terribly excited because Industrial Light and Magic also had a couple of Shima Seiki systems. These days of course they'd be old hat but in 89/90 they were quite something. -Dave

17 years, 4 months

1
0
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Apple //e system available

by rcini＠optonline.net

All: I was contacted about an Apple //e system available in Montreal. The system consists of the //e, a DuoDisk drive, monitor and manuals but no software. If anyone?s interested, contact me off-list and I?ll give you the person?s email address. Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

17 years, 4 months

1
0
0 0

68000 seven-segment project

by mark＠wickensonline.co.uk

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have a 68000 MECB clone board and a large number (70+) seven segments that I would like to do a project with - I'm open to interesting an novel suggestions! My first thought was to create a 'snapshot' board with a set of eight displays giving the value of each register at a breakpoint in the 68000 code to aid in debugging. However, I'd quite like to do something with remote sensing such as a weather station or the like. I remember such displays being used for telescope controllers, alas, I have no telescope. Any suggestions gratefully received! Mark. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAknoUBUACgkQR0vMj/mgdjZdOwCgmZf3sNjNRhDXSeHdkIScL8xT LCMAn1OBehmqrUurtEjGtANJdr2/aZaq =0muI -----END PGP SIGNATURE-----

17 years, 4 months

5
6
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H720 PSU?

by ethan.dicks＠gmail.com

With the recent discussions of the PDP-11/20, I've been thinking of what all I'll need to gather to restore mine. It's been a long time since I pulled things from the pile, but I'm pretty sure that before it was pitched, the fans and PSUs were harvested. I've found pictures on the 'net of the fans - looking at the wiring, they appear to me to be pretty standard 110VAC boxer fans. ISTR hearing that the fans in the 11/40 or 11/45 are bizarre, but I'm expecting that the fans in the 11/20 are ordinary. This leaves the PSUs. If I were going to go with MOS memory, I wouldn't worry about what to use - the Unibus itself only needs to provide +5V, and +/-15V. Because the 11/20 routinely held core, it's expecting +8V (unreg) plus -22V on top of the usual voltages. Since the "easiest" solution is to get the original equipment reattached, I'm curious how much an H720 might fetch these days. If it's too much, I can always come up with some other way to provide power to run core (or skip the core and use MOS). My question for those that have tried recently, is it feasible to go searching for 1-3 H720 PSUs, or are they old enough that the chances of running across them are slim enough to make building a functional replacement a preferable go (preferable from the standpoint of ever being able to finish). Thanks, -ethan

17 years, 4 months

7
10
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Dataram DR118A in PDP8

by bob＠theadamsons.co.uk

My newest pdp8 has an OEM Dataram DR118A memory module as well as some DEC core. Does anyone have a data sheet for this or know what size it is and how to check/set the field addresses for it? Thanks - Bob

17 years, 4 months

2
1
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Did I say SGI 4D/220?

by legalize＠xmission.com

I really meant SGI 4D/310 VGX. It turns out the machines I picked up at gummint auction from NASA Langley were better than I thought! Thanks to some help form fellow local cctalk'er Tim Riker, I was able to move these from a neighbouring business to the warehouse. For some stupid reason Estes freight delivered them there instead of calling me and leaving me a voicemail message. After they delivered them to the wrong place they never bothered to call me and tell me about it. Grrr. Anyway, these look like nice systems. They are in good cosmetic shape too. Now I need to find some power cords, disk drives and IRIX media for them and get them up and running again. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 4 months

1
0
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Ohio Scientific (was Re: Intercept Jr. Schematics)

by ethan.dicks＠gmail.com

On Thu, Apr 16, 2009 at 8:39 PM, Chuck Guzis <cclist at sydex.com> wrote: > On 16 Apr 2009 at 17:56, bfranchuk at jetnet.ab.ca wrote: > >> No. ?I think I read about it in kilabuad, rather than a early BYTE. I >> think they supported a 8080, 6502 and 6100 as add on cards.... > > The OSI Challenger III was another such system: > > http://www.old-computers.com/museum/computer.asp?c=47 As I've mentioned in the past, we had a family friend when I was growing up that had a Challenger III. I got to go over a few times and play on it. At one point, I was helping him recode a BASIC program in 6502 assembler, but my skills at 13 weren't quite up to the task with his tools (I did OK at home poking out simple stuff). I've never seen another one, though I'm sure they sold more than one. In fact, OSI was two hours from my house, and I've only ever seen that one C3P and a couple of "Superboard"s in the wild. If I ever saw any OSI stuff at a hamfest, I would have bought it, but, alas, no. I'm not sure I "need" to own a C3P, but it would be great to play on one for a day or two. Anyone one the list have one they could hook up to a serial line that's net-accessible? -ethan

17 years, 4 months

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Shimatronic knitting machine controller PC

by gordonjcp＠gjcp.net

Bit of an odd one this, rescued along with a Seiko graphics tablet (but no puck) and a 15" rather nice Sony monitor that needs 110V. It seems to have a 286 and a 68000 (or similar) on several boards inside a case about the size of a biggish PC tower, with a 3.5" half-height hard disk and floppy drive. Seems to be Japanese and for the Japanese market, judging by the labelling. No idea what it does, no idea what it is, never even fired it up, it was just a bit too good to skip. If anyone wants it, pick it up in Glasgow - mail me offlist for details. Gordon

17 years, 4 months

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HYTELNET (on topic)

by spectre＠floodgap.com

For those of you who remember the HYTELNET system, I got this link from Peter Scott ("Mr. HYTELNET") today: http://video.google.com/videoplay?docid=-5542061680042791953 -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Gravity is a myth. The Earth just sucks. -----------------------------------

17 years, 4 months

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Great find on eBay...

by derschjo＠mail.msu.edu

Item 160329193774. Sure, it doesn't work. And it's missing most of the parts. But it's an Old computer, and the bidding starts at under $4000! Sounds like a great deal to me! Josh

17 years, 4 months

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ID book / Find program

by rogue74656＠yahoo.com

I have a photocopy of some pages from a book of BASIC computer games from the 1980's. The copies I have are of the games "Freebish!" "Crops" and "There's Gold in Them Thar Skyscrapers" 1) can anyone ID this book they came from? 2) Does anyone know of an updated version (java, etc) out there? -Michael Dean

17 years, 4 months

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home brew S-100 backplane project

by lynchaj＠yahoo.com

Hi!? I've been working on a home brew S-100 backplane as a side project for a while now.? I posted an initial draft version a few weeks ago and have made some improvements based on the comments. Here is some updated information on the schematic and PCB layout.? Comments, questions, suggestions are all welcome.? My plan is to make a small initial run of manufactured PCBs and would like to know if anyone would be interested. What I am looking for is a small group of experienced S-100 builders who'd like to purchase one of these boards (at cost, PCB only, plus shipping) to help with building it and checking it out. I am trying to keep the costs low but the PCB will be in the $30-$40 range depending on quantity.? Builders would need to supply parts, power supply, tools, etc.? The intent is to shake out the design with some early builds and get some feedback for improvements as needed. http://n8vem-sbc.pbwiki.com/browse/#view=ViewFolder&param=ECB%20to%20S-100%2 0Bus%20Bridge I designed the S-100 backplane for a small 7" x 7" backplane of 6 slots with an integrated active terminator. ?The active terminator circuit is based on one I bought in a home brew S-100 system and it resembles other active terminators of the S-100 era. If you are interested please contact me. Thanks and have a nice day! Andrew Lynch

17 years, 4 months

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Jay or one of the other Moderators?

by ploopster＠gmail.com

Could you send me private email please? I need to talk to one of you ASAP. Thanks. Peace... Sridhar

17 years, 4 months

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Getting OT - Microcontrollers

by roger.holmes＠microspot.co.uk

On 17 Apr 2009, at 05:52, cctalk-request at classiccmp.org wrote: > > Message: 8 > Date: Thu, 16 Apr 2009 20:29:09 +0100 > From: Gordon JC Pearce <gordonjcp at gjcp.net> > Subject: Getting OT - Microcontrollers, was Re: Remapping the HP150 > The PIC microcontroller is kind of designed to be easy to program > in assembler to do simple control jobs. It's also about the only > CPU I > know of that's easier to program in assembler than C. I find it easy to program my 'microcontroller' in machine code, though mine weighs 5 tons. But it really is as basic as a microcontroller, plus you program it in decimal unless you need to handle binary/hex/ octal data. It is not really possible to write a C compiler for it anyway.

17 years, 4 months

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IBM Selectric google group

by aek＠bitsavers.org

Ran across this, and thought it might be of interest to people trying to do things with I/O Selectrics http://groups.yahoo.com/group/golfballtypewritershop/messages

17 years, 4 months

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Conner CP-4021 interface/pinout?

by derschjo＠mail.msu.edu

Anyone know what kind of interface a Conner CP-4021 uses, and if it's something standard, what the pinout is? This is a 20mb drive from an old Compaq LTE (8088) laptop. I'm trying to recover some data from it, and the laptop itself is dead. It appears to have a 44-pin connector in some form-factor I've not seen before. This is split out into two ribbon cables that plug into the laptop's motherboard. Can't find anything on the net. Found a site selling 'em as "0.02gb" drives, though :). (This site claims it's an IDE, I'm not so sure... though it would be nice.) Thanks, Josh

17 years, 4 months

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NOVA 4

by MRHUDSON＠att.net

I HAVE COMPLETE NOVA 4 FOR SALE ALL OR MAYBE PARTS MrHudson at att.net

17 years, 4 months

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Toshiba T6600C available (low price)

by vax9000＠gmail.com

Hi people, There are some T6600C available here (OHIO, US). If you want some, I can pick up some for you. Your cost = shipping + 9.99(price) + tax(8.??%) + 4.99 (my gas and time). Let me know before Friday morning. Thank you! vax9000

17 years, 4 months

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Help w/DEC H742 +15V...

by derschjo＠mail.msu.edu

So I'm now the proud father of a DEC PDP 11/40, which should be a fun project/adventure to get running again. I have been testing out the power supply and everything looked good this morning, at which point I figured I'd populate the CPU backplane and see what would happen. The answer is: not much -- occasionally a few LEDs would light up, but the machine was completely unresponsive. I went a bit further and tested the voltages at the backplane, and while checking the +15V, my probe slipped momentarily, bumping a nearby wirewrap pin, causing a small spark. Now, where I once had +15V, I have 0V. And since the -15V regulator is powered (in part) from the +15V line, that's dead too. I was hoping, after reading through the documents again, that it would be something as simple as fuse F1 on the power control board, but no such luck. The fuse is still good. Any suggestions for what's most likely to have blown when I screwed up here? Any recommendations for working on this supply? I'm really looking forward to pulling this thing out of the rack to work on it -- this thing looks heavy :) Thanks, Josh (still slapping himself for screwing this up...)

17 years, 4 months

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Intercept Jr. Schematics

by mc＠media.mit.edu

>>> Thanks for providing the schematics, Jeff. Where would I find them? Do I have to log into a web site? (I'm not sure I could remember the password if the mailing list has such a file repository.) --Tim > Date: Wed, 15 Apr 2009 18:03:32 -0700 > From: "Jeff Little (jeflittl)" <jeflittl at cisco.com> > Subject: Intercept Jr. Schematics > To: <bob at jfcl.com>, "Ethan Dicks" <ethan.dicks at gmail.com>, "Steve > Stutman" <steve at radiorobots.com>, "Tony Eros" <teros at doelegal.com> > Cc: cctech at classiccmp.org > Message-ID: > <B2900A9E966E5B49966F0F448614E6F4072A8C0C at xmb-sjc-221.amer.cisco.com> > Content-Type: text/plain; charset="us-ascii" > > To All: > Just in case anyone was interested, here are the schematics that I > found > for the Intercept Jr. and two of its accessory boards that were done > about 1975 or 1976. Your's truly drew all three of these on the > drawing > board with pencil and straightedge. They were then turned into > publishable versions by a graphic artist. The two boards plus a third > one which had a number "devices" on it for lab demos made up the > initial > Intercept Jr. product set. This was used to support the original > education classes that were based around this design. > > Still looking for listings of the micro-interpreter. This was the > software that made use of the special keyboard and was embedded in the > mask-programmed IM6312 ROM. > > You can see that the serial interface on the PIEART was arranged to > support either an RS-232C interface or the old-fashioned 20ma current > loop for communication with an ASR-33 Teletype. > > On the RAM module, the board held a set of two AA batteries to provide > battery back-up on the RAM memory. It may be hard to believe but I do > seem to remember that Intersil actually patented the little circuit in > the upper right hand corner that prevented these batteries from being > back-biased when the regular power was on and kicked them in > gracefully > when that power was lost. > > Regards, > Jeff Little

17 years, 4 months

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Intercept Jr. Schematics

by ajp166＠bellatlantic.net

> >Subject: Re: Intercept Jr. Schematics > From: "bfranchuk at jetnet.ab.ca" <bfranchuk at jetnet.ab.ca> > Date: Thu, 16 Apr 2009 17:56:37 -0600 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Vincent Slyngstad wrote: >> From: Ethan Dicks: >> Sent: Thursday, April 16, 2009 3:20 PM >>> >>> On Thu, Apr 16, 2009 at 6:01 PM, bfranchuk wrote: >>> > PS Did some other early computer have the ability >>> > to run the 6100 cpu as well as 8 bit cpu's? >>> >>> Are you thinking of the CP/M board in a DECmate II? >> >> It might be what be what Ben was thinking of, but the DMII is actually >> based on the 6120 CPU, not the 6100. > >No. I think I read about it in kilabuad, rather than a early BYTE. >I think they supported a 8080, 6502 and 6100 as add on cards. >Remember this was the time hardware tended to vanish overnight >as well as your $$$. The DECmateII was 6120 cpu (PDP-8A similar) and there was an Z80 based APU that ran CP/M and there was also for the DMIII both Z80 APU and also an 8088 based APU that ran CP/M-86 and DOS. Since I have a few DMIIIs I know for sure about the Z80 APU and I've used the DMII Z80 APU to run CP/M. General the DMIII is a smaller form factor DMII with a few minor adds and tweeks. The 6120 is a 6100 with Integrated 6102 MEDIC (timer, DMA, EMA) and some minor micro cycle tweaks and process improvements to make it a bit faster. If you have a 6100 and 6102 it's 99.4% the same as 6120. I have systems based on both. Generally wahn I want to play on raw iron the PDP-8 (or 61xx) archecture satisfies me for shear simplicity. The Digital Group system could have a 8080, Z80, 6502 and 6800 CPU but didn't do the 12bit 6120. The 12bit width of 6100/6120 was odd to many systems. Allison

17 years, 4 months

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Collection to go in San Antonio, TX - repost, now free/pick-up

by brianlanning＠gmail.com

Argh! Why cant' this be in chicago. I really, really, REALLY want that Nec Multisync 3D. An ibm 5160 with a matching cga monitor would be nice also... brian On Thu, Apr 16, 2009 at 10:49 AM, Mark Tapley <mtapley at swri.edu> wrote: > All, > ? ? ? ?My friend John Gold has still got a respectable collection in San > Antonio that needs to not be his. Surely somebody with a storage shed and a > van wants to come by and collect this? He'd like it to all go at once, and > not to the dumpster, but I think you can work with him on partial deals. > ? ? ? ?I think at this point the price is "come get it". > ? ? ? ?John can be contacted at: > > jhgold at stic.net > > ? ? ? ?Sorry to pester y'all again with this, but some of the gear in here > really looks to me to be worth preserving, and John hasn't got the space to > do it. > > ---------------- > > Computers > ? ? ? ?IBM 5324 large old work station/main frame > ? ? ? ?HP Pavilion 7370V > ? ? ? ?IBM Power Server 320 Type 7012 > ? ? ? ?Macintosh Power PC G3 M4405 233MHz w/ keyboard & mouse > ? ? ? ?Apple 3 > ? ? ? ?CompuAdd 212 ? ? ?Model A002 > ? ? ? ?Leading Edge DC-3010 > ? ? ? ?PC Clone Tall Tower > ? ? ? ?Eltech desktop clone > ? ? ? ?PC Clone mini tower > ? ? ? ?CompuAdd 325 Desktop > ? ? ? ?Dell Dimension XPS M200S > ? ? ? ?Dell Optiplex GXi > ? ? ? ?Sanyo MBC 550 > ? ? ? ?NEC Power Mate V466 > ? ? ? ?Toshiba T1000 Laptop (2) w/ parts > ? ? ? ?Toshiba T1000SE Laptop (2) > ? ? ? ?NEC Multi Speed Laptop > ? ? ? ?Laser 128 Laptop/Portable Computer > ? ? ? ?IBM PC single 360K w/ HDD 5150 w/ keyboard > ? ? ? ?IBM AT clone > ? ? ? ?NEC Ready 466ES > ? ? ? ?NEC Power Mate 286 > ? ? ? ?AT&T Complete system w/ monitor & keyboard > ? ? ? ?AT&T Box (2) Model 6300 CPU1Z & CPU2 w/ 1 keyboard > ? ? ? ?Compaq Presario 4550 mini tower > ? ? ? ?Atari 400 w/ Cassette drive 410 > ? ? ? ?IBM PS-2 Model 30 8530-001 > ? ? ? ?IBM PS-2 Model 30 286 8530-U21 > ? ? ? ?Packard Bell Legend 300SX 386SX-16 > ? ? ? ?Compaq Prolinea MT4/66 tower > ? ? ? ?GTE Government systems desktop > ? ? ? ?Gateway P4D-66 > > Monitors > ? ? ? ?IBM terminal 3151 RS-232 & printer ports ?(2) > ? ? ? ?Atari SC1224 > ? ? ? ?IBM 8513-001 SVGA > ? ? ? ?Zenith Data Systems ZCM 1450DT > ? ? ? ?IBM 5153 CGA > ? ? ? ?Apple 3 monochrome > ? ? ? ?XTRON RTB Technologies CM147E > ? ? ? ?CompuAdd MCH 4095N (1989) > ? ? ? ?WYSE WY50 terminal w/ keyboard > ? ? ? ?Dell VM1 mono (1990) > ? ? ? ?Samsung MA2565 (1989) > ? ? ? ?Packard Bell PB1272A (1988) > ? ? ? ?Standard MCH4095N (1988) > ? ? ? ?IBM 5081-16 Composite Video (1990) > ? ? ? ?Sysdyne CGA (IBM clone) > ? ? ? ?AES SVGA (1996) > ? ? ? ?Samtron SVGA (1989) > ? ? ? ?IBM Terminal 3164-11 (1992) > ? ? ? ?NEC Multisync XV14 > ? ? ? ?IBM 6405301 Serial monitor in box > ? ? ? ?IBM 3164 serial terminal w/ base > ? ? ? ?CompuAdd SVGA 51086 (1990) > ? ? ? ?Magnavox Computer Monitor 80 video only > ? ? ? ?Visual 120 Serial terminal w/ keyboard > ? ? ? ?NEC MultiSync JC-1401 P3A 13" (1986) > ? ? ? ?NEC MultiSync 3D > ? ? ? ?NEC MultiSync 3V > > Printers > ? ? ? ?HP Desk Jet 500 > ? ? ? ?Star NX-10 Dot Matrix > ? ? ? ?Panasonic Quiet KX-P2180 > ? ? ? ?Epson LQ570 Dot Matrix > ? ? ? ?Star NX-1000 Multi font w/ box > ? ? ? ?Texas Instruments Microlaser Pro E > ? ? ? ?Epson LQ-1000 Wide Carriage Dot Matrix > ? ? ? ?Qume Daisy Wheel w/ extra wheels and print cartridge > ? ? ? ?Kodak Personal Portable Diconix 180si > > Miscellaneous > ? ? ? ?IBM Keyboards (5) > ? ? ? ?Canon Personal Copier PC-3 w/toner cartridges > ? ? ? ?Seiko Digitizer Tablets (3) > ? ? ? ?IBM SCSI drives 7204-001, 7207-001, 7210-001 > ? ? ? ?EXABYTE SCSI tape drive > ? ? ? ?CI Designs SCSI peripheral box / in box > ? ? ? ?IBM PC case 5150 > ? ? ? ?IBM XT case 5160 > ? ? ? ?Musek scanner (no photo) > ? ? ? ?Memorex scanner (no photo) > ? ? ? ?IBM Keyboard??, 5015715, in box, never opened > ? ? ? ?BK Precision 2040 CB Signal Generator > ? ? ? ?Arnet serial expansion board, with software and cables > ? ? ? ?HP 1611A Logic State Analyzer for Z80? > ? ? ? ?Gould K105D Logic Analyzer for Z80? > ? ? ? ?Various keyboards, internal cards, Creative Labs CD drives > ? ? ? ?and Sound Blasters > ? ? ? ?TRS-80 Printer Cassette interface for PC-2 ?(2) > ? ? ? ?TI-74 Basic Calc hand held computer > ? ? ? ?NEC Versa docking station, in box , never used. > > > -- > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?- Mark ? ? 210-379-4635 > ----------------------------------------------------------------------- > Large Asteroids headed toward planets > inhabited by beings that don't have > technology adequate to stop them: > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Think of it as Evolution in Fast-Forward. >

17 years, 4 months

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Northstar disk wanted

by adamg＠pobox.com

Hi all, I'm looking for a 10-sector 5.25" floppy in the Northstar format. Either a boot disk or a data disk would be fine. If anyone has one they'd be willing to part with, please contact me off-list. Thanks! -- Adam

17 years, 4 months

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Clustering on VMS 4.7

by robert.jarratt＠ntlworld.com

I have set up a VMS 4.7 machine on SIMH (using the 3900 emulation) but I can't see how to set up clustering. The only cluster-related procedures I have in SYS$MANAGER are MAKEROOT.COM, BOOT_CONFIG.COM and SATELLITE_CONFIG.COM. They all tell me "This system disk is not set up as a cluster system disk." I cannot see how to get started to make the system a cluster system disk, can anyone tell me what the first step is? Thanks Rob

17 years, 4 months

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Anybody collect APF MP1000 games?

by teoz＠neo.rr.com

The other day I snagged some misc computer/console stuff and included in the lot were some AFP MC1000 cartridges (1978 vintage I think). Since I don't have that system or plan of getting one I figured somebody might want them (open to offers). The carts are: MG1007 Blackjack MG1004 Bowling.Micro match MG1009 Casino 1 :slots/roulette/keno MG1003 Hangman/TIC TAC TOE/Doodle MG1005 Brickdown/Shooting Gallery Since there were only 12 or so carts made for this system this is almost half of all games sold. They look clean but are untested.

17 years, 4 months

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Looking for a Cromemco DPU.

by js＠cimmeri.com

I'd very much like to learn and use CPM-68K, as well translate my 8080 CBIOS to it to contribute back to the public. If anyone has a DPU they'd like to sell or trade, please email me at js at cimmeri.com. Thank you.

17 years, 4 months

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Needed: TI SIlent 700 ASR service manual

by hamren＠sdu.se

I recently got a TI Silent 700 ASR; thats the one with two cassette drives on top. It is more or less dead, so I need a service manual. Does anyone have it or know of an online copy? Kind regards /Lars Hamr?n

17 years, 4 months

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Fiche scanning (was Re: [Simh] Listings of XXDP test and maindec's for 11/70)

by ethan.dicks＠gmail.com

On 4/14/09, Al Kossow <aek at bitsavers.org> wrote: > I have all of the diag listing on fiche. The scanner that I have is a bit > difficult to use, so it takes about an hour per sheet to set up and scan. Wow. That's fiddly. I can understand things being difficult - the information density on a fiche is rather high. Speaking of fiche scanning, I was going through some boxes last week and ran across the source fiche for VMS 2.0. I know it's far from the only copy in the world, but it did make me wonder if anyone has an electronic copy. It'd be a hell of an OCR project (or an interesting Captcha dataset), but even scans could be interesting to read through. What I have is one 3-ring binder with a special fiche-storage insert - you can read the top 1/4" to see that you have the right fiche, and the lower 90% is protected from dust and scratches. There's at least 20 fiche to a "page" in the notebook, and it's one or two "pages". Elsewhere, I know I have VMS 4.0 and probably other versions of source fiche. Of course, I do have a reader (more than one), but looking at things on a modern machine without having to go to where the gear is, make room to set the reader up, etc., means that most of the time, the fiche just sit - no casual browsing and no easy way to share or preserve the contents. I know the group has hashed and rehashed fiche scanning and I don't mean to re-open that debate. Obviously fiche scanners exist, reinventing the wheel isn't cost effective, etc, etc. It's unfortunate that there's so much manual fiddling to get a good scan, but those letters are awful tiny. If I were on the left coast, I might consider volunteering to drive the scanner just to be able to share the results. I have a pile of fiche myself, mostly from the late 1970s through the mid-1980s, IBM and DEC docs primarily, and it would be great to know that it's not only accessible as slivers of film. -ethan

17 years, 4 months

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AT&T 3B1 Development Set (and others) in 5'25 disks

by djg＠pdp8.net

>Someone has this and other software available for this >machine in 5'25 format, please ? Let me know. > http://www.bitsavers.org/bits/ATT/unixPC/

17 years, 4 months

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Lisa for sale (forward)

by michel.mostaert＠ing.be

Hi, I've juste seen your were selling a Lisa at the beginning of march. Is it still available ? Wich one is it ? (Lisa I or Lisa II) ? How much would you sell it ? Were is it stored ? Would it be possible to send it to Belgium ? Thanks by advance, Michel MOSTAERT Contractor Shift Operator OIB TO DOS Team5 Ops&IT Banking/ING Belgium 60, Cours Saint Michel 1040 Brussels, Belgium Tel + 32 2 73 83703 Fax + 32 2 738.35.29 mailto:michel.mostaert at ing.be P Don't print documents unless absolutely necessary. ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. -----------------------------------------------------------------

17 years, 4 months

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PDP-8/M progress and problems

by djg＠pdp8.net

>Does anyone have schematics for the KC8ML? > My 8/M has the LED panel http://www.pdp8online.com/pdp8cgi/query_docs/view.pl?id=224 The bulb panel http://www.pdp8online.com/pdp8cgi/query_docs/view.pl?id=224

17 years, 4 months

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FREE: Diablo Model 630 "operators guide"

by tosteve＠yahoo.com

30-page Xerox Diablo 630 Communications Terminal Operators Guide from around 1980, yours for the asking. Just pay a dollar or two for snail-mail. Steve in Southern California (OC) 92656

17 years, 4 months

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AT&T 3B1 Development Set (and others) in 5'25 disks

by spedraja＠ono.com

Hello. I've recently acquired one AT&T / Olivetti in perfect shape. It has installed the 3.5 version of the AT&T Unix and is fault of the Development Set for this release. Someone has this and other software available for this machine in 5'25 format, please ? Let me know. Thanks in advance Sergio

17 years, 4 months

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Fiche scanning (was Re: [Simh] Listings of XXDP test and maindec's for 11/70)

by vern4wright＠yahoo.com

Ethan, I have some small experience in fiche scanning. Several years ago I was researching/writing a biographical essay on an interesting scholar and adventurer in my family. His published writings were in the 19th and early 20th century, and mostly available only on microfiche. I'd suggest checking with your local university. I lucked out at a local university (SDSU, in San Diego). I found a fiche printer with a add-on which wrote the image off to disk. It wasn't automatic but as I recall it was about 2min/page for scan to writing the disk. The images were very good; had the typefaces not been antique, I could have applied OCR in my own office. I suspect that the technology will be vastly improved and available for use. Good luck. Vern Wright --- On Tue, 4/14/09, Ethan Dicks <ethan.dicks at gmail.com> wrote: > From: Ethan Dicks <ethan.dicks at gmail.com> > Subject: Fiche scanning (was Re: [Simh] Listings of XXDP test and maindec's for 11/70) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Date: Tuesday, April 14, 2009, 7:09 AM > On 4/14/09, Al Kossow <aek at bitsavers.org> wrote: > > I have all of the diag listing on fiche. The scanner > that I have is a bit > > difficult to use, so it takes about an hour per sheet > to set up and scan. > > Wow. That's fiddly. I can understand things being > difficult - the > information density on a fiche is rather high. > > Speaking of fiche scanning, I was going through some boxes > last week > and ran across the source fiche for VMS 2.0. I know > it's far from the > only copy in the world, but it did make me wonder if anyone > has an > electronic copy. It'd be a hell of an OCR project (or > an interesting > Captcha dataset), but even scans could be interesting to > read through. > > What I have is one 3-ring binder with a special > fiche-storage insert - > you can read the top 1/4" to see that you have the > right fiche, and > the lower 90% is protected from dust and scratches. > There's at least > 20 fiche to a "page" in the notebook, and > it's one or two "pages". > > Elsewhere, I know I have VMS 4.0 and probably other > versions of source > fiche. Of course, I do have a reader (more than one), but > looking at > things on a modern machine without having to go to where > the gear is, > make room to set the reader up, etc., means that most of > the time, the > fiche just sit - no casual browsing and no easy way to > share or > preserve the contents. > > I know the group has hashed and rehashed fiche scanning and > I don't > mean to re-open that debate. Obviously fiche scanners > exist, > reinventing the wheel isn't cost effective, etc, etc. > It's > unfortunate that there's so much manual fiddling to get > a good scan, > but those letters are awful tiny. > > If I were on the left coast, I might consider volunteering > to drive > the scanner just to be able to share the results. I have a > pile of > fiche myself, mostly from the late 1970s through the > mid-1980s, IBM > and DEC docs primarily, and it would be great to know that > it's not > only accessible as slivers of film. > > -ethan

17 years, 4 months

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HP Laserjet 4 free for pickup

by trag＠io.com

> Date: Mon, 13 Apr 2009 12:32:49 -0700 > From: "Chuck Guzis" <cclist at sydex.com> > On 13 Apr 2009 at 15:18, Ethan Dicks wrote: > >> 60ns EDO perhaps? >> >> <http://www.pcmemorystore.com/Xerox%5ETektronix-DocuPrint-N2825-ram.ht >> m> > > 3.3 or 5v? The EDO DIMMs I tried should have worked, but didn't even > register. Some additional research is obviously called for. Maybe > it's the "unbuffered" bit. > > Does anyone else find memory module terminology confusing? You might try Kingston's website. If your printer doesn't come up on their memory selector, give their 800 number a call. I have found them to be unfailingly polite and helpful in assisting me when I want to know what memory will work with something obscure. Some times the answer is, "We don't know." But they've admitted that in a competent way, as opposed to trying to sleaze their way through. And if I can supply some technical details they'll sometimes make an educated guess with caveats. That's how I found the memory module for the Kyocera C170N. There's some info on Kyocera's spec sheet about the type of module used. The Kingston guy didn't have any info on that printer yet, but thought that one or both of two of their modules would likely work. At that point, I had the choice of buying one directly from Kingston with a nice return option if it didn't work, or gambling and buying it from a discounter at a lower price with a less friendly return policy. Jeff Walther

17 years, 4 months

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pdp-8/e fault

by rodsmallwood＠btconnect.com

Hi My pdp-8/e has developed a nasty fault. I have all the manuals and a scope but before delving in too deep I thought I'd see what the 'Hive mind' knew. Its straight forward enough of a fault. I can no longer toggle in values via the switch register. The address sets up ok and the switch register value appears to transfer to core on raising DEP. The location counter increments normally. However going back and checking the locations shows nothing there. It does not appear to be a problem with the core as replacing the low address 4k with a higher one makes no difference. Experienced PDP-8 fixers please comment. Rod Smallwood

17 years, 4 months

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my sickness continues...

by legalize＠xmission.com

<http://www.xmission.com/~legalize/vintage/images/ESIG-10000.jpg> "ONE LOT CONSISTING OF 2 EACH IMAGE GENERATORS: EVANS AND SUTHERLAND, MODEL 103401-103, SERIAL 9; AND EVANS AND SUTHERLAND, MODEL 103402-011, SERIAL 61" Based on the model numbers, I'm assuming they're ESIG-10000 series racks. Hopefully with my contacts that still work at Rockwell-Collins I can get these puppies up and running. My wallet hates a list member for telling me about this, but my collecction thanks him :-). It looks like they were used for flight training at NASA AMES. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 4 months

2
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KM11s and the PDP-11/20 (was Re: Help w/DEC H742 +15V...)

by ethan.dicks＠gmail.com

On Mon, Apr 13, 2009 at 10:13 PM, Josh Dersch <derschjo at mail.msu.edu> wrote: > Ethan Dicks wrote: >>> ?There's also an interesting Unibus analyzer made by Guy Sotomayor... >>> http://www.shiresoft.com/products/ua11/Unibus%20Analyzer.html. >> >> I have one of those boards, but since I got it from Guy as a bare >> board, I still have to assemble mine... > > The KM11 looks like it may be very useful for getting my 11/40's CPU running > again... anyone have any experiences to share using one of these? No. I wish I did, but I got a pair of KM-11s since I have several DEC devices which can use them (RX01, RK11-C, RK11-D, PDP-11/05, PDP-11/20). I don't happen to have an 11/40. The primary purpose for my KM11s, was to facilitate the restoration of my 11/20 - it was butchered and dumped prior to me acquiring it (I rescued it from the skip at work, already in many pieces), and to attempt to get my RK11-C working (it arrived from the same place intact, but is suffering from some visible corrosion on the pins of the backplane, so I don't know if I'll ever get it working reliably). I don't need to do much RX01 electronic repair (a new drive motor and a new stepper motor would go a long way to returning both sides of a dual drive to work, but the boards seem intact); however, I think it'd be cool to watch the drive work by observing the blinkenlights. These items are way, way down on my DEC list (I have PDP-8s to work on first), but someday the 11/20 will bubble up to the surface. I know I don't have all the core that originally came with it - one of my cow-orkers souvenired it 20 years ago. I have the backplanes and the driver boards, but am missing at least one 4K core plane. My _hope_ for this system is to get an older version of RT-11 up on it first, then *perhaps* if I can get enough memory on it and some compatible disk device, see if there's an ancient-enough version of UNIX in the PUPS archive to run on it (it would have to be a version from 1971 or 1972, IIRC, to fit on a KA-11 w/16-bit address bus). I don't know that it's possible, but it's a goal. I'm thinking that the RK11-C might work there, or since I know it works, the RK11-D, plus one or two RK05s. It's possible that those are too new for PDP-11 UNIX, but for old RT-11, I can probably get away with the SJ monitor and an RX11 w/dual RX01s. First, though, I have a lot of reconstruction to do on the 11/20. IIRC, I will need some PSUs to get the ball rolling, since that's what I think was yanked from it before it was trashed. I think I have the CPU box plus two memory boxes (the size of 3 BA-11s, essentially), but I don't recall the PSU model number off the top of my head - it's one that supports multiple single-height power cards in a series of DD-11C-sized 4-slot hex-height backplanes. Oh... I probably don't have enough M920s to reconnect everything - I don't think many of them were in the dumpster with the CPU. *Sigh* The missing parts is why I never did much with it. Maybe I'm better off trying to recycle the front panel and drive it from something modern. The chances of finding multiple PSUs and short Unibus interconnects that aren't already in an 11/20 seem small these days. -ethan

17 years, 4 months

2
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PDP-8/M progress and problems

by toby＠coreware.co.uk

I've now finished the rebuild of the PSU for my PDP-8/M and have reassembled the chassis and put in a minimal card set consisting of the KK8-E CPU and a 8KW core set. The machine is now semi-operational but I have the following issues left to resolve: 1. Sometimes (generally the first time) when I power the machine on, the RUN light is on and the console is unresponsive to any stimulus (inc halt), although I can cycle the rotary switch to see the various registers/states. Generally if I power cycle, it is fine. Does this indicate power supply instability? I'm guessing the second time I power on, the capacitors are still charged up from the previous powering. 2. Switch 4 doesn't appear to be working (can't set bit 4 for the accumulator or deposits). I've confirmed the switch itself is ok, so think I have a logic problem. Does anyone have schematics for the KC8ML? Thanks, Toby -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

17 years, 4 months

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I [don't] hate E-Bay (was Cromemco 68000 on ebay)

by chrism3667＠yahoo.com

you know in all fairness, there are only so many promises even ePay can keep. If someone is unaware, or rather just unprepared to deal w/some risk, uh well, too bad ya big baby. And moreover if you're inclined to believe their line of bull, you're worse off then that. ?In truth though, I've had B-E-T-T-E-R transactions from dealings off of eBay. You do the analysis. It's true. I'm sorry but it's true. Too often (and this is going back years and years, not just recently) someone will put some piece of crap on eBay, and watch the bidding go up, up, and away. The temptation is too much the next time they chance upon some piece of crap left out in the trash. And there's this layer of insulation where you don't have to face the buyer. You can assuage your conscience by saying the bidder just didn't ask enough questions. --- On Sun, 3/29/09, der Mouse <mouse at Rodents-Montreal.ORG> wrote: From: der Mouse <mouse at Rodents-Montreal.ORG> Subject: Re: I [don't] hate E-Bay (was Cromemco 68000 on ebay) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Sunday, March 29, 2009, 3:55 PM > First, re: "I hate [ebay] because it defrauded me in 2005", that is, > in all probability, BS.? E-Bay didn't defraud you, the other party > (buyer or seller) did. But if ebay makes promises which it doesn't keep - such as promising to protect each party against the other - then that too is fraudulent. (Whether ebay does make such promises I don't know, but I've certainly seen enough stories to make me think it doesn't deliver if so.) /~\ The ASCII??? ??? ??? ??? ? Mouse \ / Ribbon Campaign X? Against HTML??? ??? mouse at rodents-montreal.org / \ Email!??? ? ???7D C8 61 52 5D E7 2D 39? 4E F1 31 3E E8 B3 27 4B

17 years, 4 months

2
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Xerox 820-II Questions

by snhirsch＠gmail.com

I just won an 820-II on eBay, but the seller lost the external drive box (hard disk + 8" floppy). Judging by the schematic, it should be very straightforward to interface one of my floppy drives to it (I have a bunch of Shugart, Seimens and Tandon units). The hard drive I'm less sure about. Looks like a proprietary interface of some sort. Can anyone tell me more about it? Does anyone have a spare 820-II drive enclosure they'd like to part with? Lastly, will Imagedisk support creation of a system disk on an 8" drive attached to a Compaticard IV? Steve --

17 years, 4 months

2
1
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Flexowriter lubrication

by roger.holmes＠microspot.co.uk

None of my recent posts have made it into the digests (probably because Hewlett Packard sent me a security certificate) but most topics are now stale so I wont bore you with things like 160 column cards, but I will retry this one: One of my Flexowriters has just had its mains cable replaced and then turned on for the first time in about 25 years. Apart from surface rust and the printing levers not going back down, and the ribbon breaking, it seemed to work fine. Does anyone know what grade(s) of oils/greases to use on which parts? The rubber parts and carriage return band even seem good but would probably not appreciate dunking the whole thing in oil. I guess WD40 or "3 in 1" oil would be out because I've been told they both leave a residue. I have not seen anyone selling 'light machine oil' for a few years here in the UK but there must be a modern version surely.

17 years, 4 months

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HP Laserjet 4 free for pickup - Putnam, NY

by Watzman＠neo.rr.com

Now that is a printer that is worth keeping. Especially with the Jet Direct card. As for the toner cartridge .... you can get one on E-Bay for probably $20 to $30, or you can get refill toner with instructions for under $20. Barry Watzman Date: Tue, 07 Apr 2009 01:52:46 -0400 From: Curt Vendel - Atarimuseum <curt at atarimuseum.com> Subject: HP Laserjet 4 free for pickup - Putnam, NY Would anyone like a working HP Laserjet 4 with 10mb Jet-Direct Card? Curt

17 years, 4 months

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Old iron needed for prop shoot in Chicago

by sellam＠vintagetech.com

I have a potential client who is looking for old iron (i.e. mainframes, minicomputers, unit record equipment, etc.) in the Chicago area for a prop shoot. There's not a whole lot of money involved, so I'm probably just going to send the guy a contact list of those who respond to this inquiry and let you work out your own deals. If anyone has any mainframe sections or minicomputers in racks with lots of lights and switches or keypunch machines, 9-track tape drives, etc., and they are transportable, then please contact me directly (off-list) and I'll give you the details. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

17 years, 4 months

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HP Laserjet 4 free for pickup - Putnam, NY

by trag＠io.com

> Date: Sun, 12 Apr 2009 22:02:54 -0300 > From: "Alexandre Souza" <alexandre-listas at e-secure.com.br> > I have a 4+ with jetdirect and > postscript (and globs of memory, of course). This is one sturdy printer I > don't want to let it go. I just cannot justify a newer printer! Maybe if > someday I get a color one for cheap... Definitions of cheap vary of course. This past holiday season there were at least three color laser printers priced at $200 shipped to (IIRC) $300 shipped with postscript and ethernet connectivity built in. The Kyocera EP C170N was $200 shipped from buy.com and through Amazon but fulfilled by an arm of Buy.com. The Xerox Phaser 6180 was (again, IIRC) $250 from Staples with free shipping. Both of the above models accept an optional duplexer, but the duplexer costs about what the printers were going for. The third model was something from Brother, I think, with the duplexer included and priced around $300 from Newegg. I bought the Kyocera model because it includes AppleTalk support--not LocalTalk, but support for AppleTalk over Ethernet. I still have some old Macs around (bringing this sort of on-topic) and the extra compatibility is nice. Jeff Walther P.S. The KTM1523/512 Kingston 512MB module works as an upgrade in the C170N, so the expensive Kyocera upgrade can be avoided.

17 years, 4 months

4
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The VAX is running

by roger.holmes＠microspot.co.uk

>>> How does magtape avoid the stream-of-bytes issue? >> >> Magtape has blocks. > > What exactly is a block? > > Is it defined as a sequence of bits or as a sequence of bytes? > > If its just a sequence of bytes that define a block, I'm not sure I > understand how blocks avoid the stream-of-bytes issue. At the physical level, what really defines a block is that between blocks there are inter block gaps which gives the tape drive time to stop. If the CPU writes one block and then does calculations or (on a machine with a multi tasking OS), runs someone else's job, the drive must stop and wait for the next block to be written. Similarly on reading, but because the drive does not know what will happen on reading, then it has to provide inter-block gaps even when two block writes follow on immediately from each other. Having this physical structure means a tape can ONLY be read as a sequence of blocks, you cannot just ask for n tape frames arbitrarily. By the way, tape frames are really defined by the tracks on the tape, 9 track is 8 bits plus parity, 7 track is I think usually 6 bits plus parity, (1 inch)16 track is 8 bits plus 8 CRC bits, 10 track is 4 bits plus 6 CRC bits. There are of course many formats for 1/4 inch and 1/8 inch, and helical head formats, there was even a VCR backup system for Apple ][ which worked with a VHS recorder and these add an extra physical structure of stripes, though I think these were streaming drives without CPU control of the tape deck, hence no proper inter- block gaps, merely unused tape if the CPU could not keep up whilst writing. Reading was I presume usually of individual files, so stopping was not necessary.

17 years, 4 months

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SunFire 6800 in Montréal

by alexandre.laguejacques＠gmail.com

Hello all, I'm not sure how to put this, but I really hope someone on the list -- and local to me -- will buy this machine. eBay item 270372433812. Sun Fire 6800 in Verdun (QC), pickup only. Zero bids, starting at 100 USD, 4 days left. Yes, all 500 kg. Even if, as the seller says, "my cute friends [in the photo] are not included". I don't know the seller -- and notice his nonexistant feedback -- but what's the risk if it's "pickup only" and you've paid by CC or Paypal? If you buy it, you have to invite me over to check it out. I couldn't take this machine even if one paid me to haul it away, unfortunately. :-( - Alex

17 years, 4 months

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Which way to go, from now on?

by dm561＠torfree.net

-------------Original Message: Date: Sat, 21 Mar 2009 17:06:19 -0300 From: "Alexandre Souza" <alexandre-listas at e-secure.com.br> Subject: Which way to go, from now on? Ok, now what? I had most of the 8 bits' computers avaiable in Brazil I had most of the 16 bits' computers avaiable in Brazil I had most of the 32 bits' computers avaiable in Brazil I had most of the 64 (!) bits' computers avaiable in Brazil I'd like to find a new journey. I was thinking about S100 computers, but it is too expensive to play. I cannot find S-100 connectors here in Brazil and boards to play are almost inexistent here. Any suggestion of a nice project to keep me entertained? :o) Thanks Alexandre ----------Reply: Where to go, what to do... a profound question indeed... Why not join Andrew's happy little gang building and playing with the N8VEM SBC? Sounds like a lot of fun. I'm still waiting to hear from you about that PPT BTW... ;-)

17 years, 4 months

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Early 80's electronic/computer design books

by keithvz＠verizon.net

I'm interested to learn the titles of some standard reference books on electronic and microcomputer design from the early 1980's. I've been reverse engineering many aspects of the Commodore Amiga. While I have a decent library of Amiga books, I'd like to expand the collection to include the "de facto standard" reference texts of the day --- to give me more of an insight into the minds of the designers. I've read some "history of the amiga" columns, "Life on the edge", various interviews and so on. If you could go back, what books would you find on the bookshelves of these engineers? If you graduated college or a technical school in 1980, what were the popular reference texts used? 68000 reference books? 6800 reference books? standard information on bus arbitration, or memory controllers, or maybe LSI chip layout? standard OS design practices? I know I'm all over the place. I've started playing with FPGA's and while I'm wholly unqualified to be doing so, I'm enjoying it --- but would like to understand how this stuff was done prior to the modern age. It's like learning the command line first, so that when the gui-front end comes, you know what's happening in the back. Thanks Keith P.S. I'd almost be willing to bet there is one or two books called "contemporary microcomputer design" or "contemporary electronic design" both with a copyright date of 1980. I could be wrong. :)

17 years, 4 months

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Teletype 43 ribbons

by legalize＠xmission.com

There was some talk of locating these a while back. Looks like these people have some in stock: <http://www.patriotimaging.com/product.asp?id=7425> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 4 months

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cctech Digest, Vol 68, Issue 21

by stekster＠gmail.com

I may be mistaken, but I believe that the Palantir board was one designed by our own Jim Battle, if it is what I think it is - a board for OCR. (Back in 1987 I used the stand-alone Palantir OCR machine - a cheaper $25,000(?) alternative to the Kurzweil unit - to scan in 1100+ pages of all the Sherlock Holmes stories. It used 5 68000 CPU's and 2 MBs of ROM IIRC.) Any comments, Jim? Bob Stek Former Saver of Lost Sols Message: 5 Date: Mon, 6 Apr 2009 15:02:46 -0600 From: Mike Maginnis <mmaginnis at gmail.com> Subject: A few free items A few items to give away. I came across a box of stuff as I was cleaning out the server room. Might be of interest to someone, might not. I'd prefer local pickup (Denver, CO area), but could be persuaded to ship if you cover S/H. * Unknown board from "The Palantir Corporation" (c) 1988 - has a Motorola 68020. 16-bit ISA. Maybe a co-processor board?

17 years, 4 months

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Is this a Q-BUS PDP-11?

by legalize＠xmission.com

See ebay item # 270367995292 -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 4 months

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HP Laserjet II available in Seattle area

by derschjo＠mail.msu.edu

Rescued a complete Laserjet II from the garbage at my girlfriend's apartment complex, just couldn't let it die like that. It powers up and passes POST, and the fuser heats up OK, but it doesn't want to take paper from the tray. This seems like a common ailment and shouldn't be difficult to fix. I don't have any need for it (got a LJ 4M+ as my workhorse). If anyone wants it, come and get it. (Seattle area.) Josh

17 years, 4 months

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FREE: QIC-40/-80 Internal Tape Drive

by lee_courtney＠acm.org

Free for local pick-up in SF Bay Area (95032), a slightly used Conner internal PC tape drive for QIC-80/AccuTrak250(RW), QIC-40/AccuTrak120(RO) media. Comes with original docs, cable and DOS and Windows floppies. Contact me off-list if interested. FCFS... Lee Courtney

17 years, 4 months

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Midwest Gaming Classic Roundup

by wgungfu＠gmail.com

Just a followup to my announcement post, the MGC came and went and was a huge success. 22,000 sq ft packed to the rim of computing, console, video arcade and pinball, so much so we're moving to a new located next year that'll give us around 30,000 sq ft. Here's my photo galleries: Vending Hall http://www.flickr.com/photos/91071283 at N00/sets/72157615745200729/ Coin-ops http://www.flickr.com/photos/91071283 at N00/sets/72157615745260231/ Competition Area http://www.flickr.com/photos/91071283 at N00/sets/72157615745281965/ Museum http://www.flickr.com/photos/91071283 at N00/sets/72157615834963880/ Underdog Chamber http://www.flickr.com/photos/91071283 at N00/sets/72157615746538685/ Family Game Room http://www.flickr.com/photos/91071283 at N00/sets/72157615835258766/ VGEVO http://www.flickr.com/photos/91071283 at N00/sets/72157615746725067/ Ben Heckendorn Experience http://www.flickr.com/photos/91071283 at N00/sets/72157615835307612/ Some Speakers http://www.flickr.com/photos/91071283 at N00/sets/72157615835542568/ People At The Show http://www.flickr.com/photos/91071283 at N00/sets/72157615746879399/ You'll notice the museum area had a decent vintage personal computer contingent, with people coming to represent Commodore, Texas Instruments, and Tandy/CoCo computers (all the others are mine). Once again, I'm extending the offer for collectors from here to take part and show of their equipment. I'd also be happy to host the VCF Midwest there next year as well, we have the space, and the people (I'm estimating attendance at about 4,000 unofficially for this year's show). And I love to promote our hobby any way I can. Marty

17 years, 4 months

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Looking for Tek 1240/1241 ground leads...

by derschjo＠mail.msu.edu

I picked up a nice Tektronix 1241 logic probe to help me debug my old computers, and I have everything I need (4 6460 pods, 1 6462, a few flying lead sets, some grabbers, etc...) except ground leads (Tek PN 344-0267-00). Anyone out there have any to spare? Any suggestions for good places to find accessories for old logic analyzers like this (my Google searches keep turning up sites that want $400 for a probe and don't even have anything in stock...) Thanks, Josh

17 years, 4 months

2
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Laserjet 4

by Watzman＠neo.rr.com

Re: "Glad to hear you're keeping your trusty LaserJet 4 - those are really great printers. And, on the plus side ....." Ah, the Laserjet 4+ is an even better version ........ :-)

17 years, 4 months

1
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Need packing/shipping help from Land O' Lakes, Florida

by sellam＠vintagetech.com

Is anyone available to pack and ship a MacTV from Land O' Lakes, Florida? If so, please contact me directly. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

17 years, 4 months

1
0
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HP262x keyboard to HP120 interface

by ard＠p850ug1.demon.co.uk

For those who are still interested in this (Rik?), I've now built the interface from an HP262x keybaord (actually one 'borrowed' from my HP2623 terminal) to my HP120. The differenve between the 2 keyboard interfaces is quite simple. The HP120 puts the scan counter in the keyboard, the interface being the clock and reset lines for this counter, along with an active-high 'current key pressed' siganl. The HP262x puts the scan counter in the terminal, the inteface is the 7 key select lines (basically the outputs of the counter) and an active-low 'key pressed' signal (open-collector). Although the Hp262x runs the keybaord at 5V, it's all 4000 series logic interally, and can be run at the 12V of the HP120 interface. So the interface between this keyoard and the HP120 is little more than a 7 it counter. I've now built it, it's a little box with a DA15 socket on one end to take the plug from the unmodified HP2623 keyboard (I obviously wanted to leave the keyoard unchanged so I can still use it with the 2623 terminal) and a short cable coming out of the other end ending in an RJ11 plug to go into the HP120. Inside are 3 chips, all common 4000 series CMOS parts. : A 4024 (7 bit counter). This is linked to the clock and reset lines from the HP120 via the resisotr/diode protection networks as used in an HP150 keyboard. The bottom 6 outputs of this counter are buffred by a 4050 chip and then fed via a 16 pin header plug nad socket to the DA15 socket for the keyboard. This chip may not be necessary, but some counters don't like driving long cables (glitches on the outputs can change the state of the flip-flops). I dout the 4024 sufferes from this, but adding one chip to be sure seems worth it. The last output from that counter is buffered bu 2 sections of a 4049 in cascade. The reason I used that chip is that I needed a NOT gate to invert the open-collector key-pressed/ signal from the HP2623 keyboard. This I did,, after pulling said signal high with a 3k3 resistor. The output of that NOT gate is again given a diode/resistor protection circuit and fed to the HP120 And it works. It worked first time actually (well, I did test as I went along, but after fitting the last connection , plugging everything in and powering up, it worked). I can type on the keyboard, the correct [1] characters come up. I can use the function keys, configuration screen, etc. [1] Modulo the fact that I have Danish/Norwegian ROMs in my HP120 (!) I am now looking at modifying an HP150 keyboard to work with the HP120. More news if I get that working! -tony

17 years, 4 months

2
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Keypunch that was on eBay

by roger.holmes＠microspot.co.uk

Thanks for whoever it was who posted the info on the IBM 029 keypunch on eBay. I have won it, nobody else bid. After it has been shipped across the Atlantic I will have to think about converting it from 60Hz to 50Hz. I have the remains of a 50Hz verifier which has a 240v / 50Hz motor I should be able to use. Hopefully the rest runs on DC, so a step down transformer before the transformers and bridge rectifiers might be enough. Shipping costs more than the item of course. Anyone have any thoughts if it is worth trying the whole thing with just a 240 - 110 transformer? If the motor burns out, not the end of the world.

17 years, 4 months

6
5
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TeleBit modem..

by geneb＠deltasoft.com

I've got a Telebit T2500 modem with a manual but no power supply. I also have a Penril Alliance .v32 modem with manual, no supply. If interested, email me off list. Thnx! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. OpenQM - A Multi-Value database for the masses, not the classes. http://gpl.openqm.com - Get it _today_!

17 years, 4 months

1
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Re: Large cache of classic computer in Umeå, Sweden

by lee_courtney＠acm.org

Hej G?ran, There's always donation to IT-Ceum in Link?ping. Kinda far away, but still in Sweden and a nice Museum. Cheers, Lee Courtney Menlo Park, CA 94025 --- On Sat, 4/11/09, G?ran Axelsson <axelsson at acc.umu.se> wrote: > From: G?ran Axelsson <axelsson at acc.umu.se> > Subject: Large cache of classic computer in Ume?, Sweden > To: General at acc.umu.se, "On-Topic Posts Only" <cctech at classiccmp.org> > Date: Saturday, April 11, 2009, 3:22 AM > Hi List! > > I'm helping a friend to empty a storage which he has to > have empty by the end of the month so time is short. This > message is a mix between "look what I've got" and "Help, > need a good home for this lot". I'm taking over a large part > of this collection but I can only take care of the most > precious computers. > > The contents of the storage is a lot of personal stuff and > other random objects, but he also collects old computers > with focus on Norsk Data machines. > More or less of what we can see so far, this is the major > parts... > - ND-5700, two full rack, one complete, one missing a CPU. > I'll take care of this system. > - ND-Filestore, disks and tape. I'll take this one too > - ND-110 Compact, 4 machines. I'll save all and reserve one > for my self. > - ND-110 Satellite, about 10 machines. I'll try to save > all, reserving one or two myself. > - ND-Butterfly, 2-3 machines, all spoken for. > - A huge stash of manuals. Will be saved and scanned. A lot > of doubles exists. > See the list at http://www.ndwiki.org/wiki/Virtual_library#ND_Library_Teg_in_Ume.C3.A5 > > - ND-Notis terminals. (Nokia VT220 terminals). Circa 80 > terminals. Only a few are spoken for, anything left near the > end of the month will go into the dumpster.? :-( > > - NEC Monograph, new systems in boxes 4-6 systems, complete > with graphics controller and all. For running DTP under Win > 3.0/3.1, monochrome monitor Maybe two spoken for. > > - A lot of Archie computer laptop parts, 286. > - ISA IDE controllers, new in box. approximately 30 cards. > - Some IBM system 3 manuals, RPG2 > - ... plus a lot more that I can't remember right now. > > We have found a number of other computers among all the > scrap, some really nice ones. I liked the ABC 1600, an unix > machine made by Luxor with a twistable screen with white > phosphor. But those computers are going to remain in my > friends custody. > > If time permits we could send stuff by mail or in some > other way. We might store some stuff if we know we could > ship it off after the move but this month will take all our > time just to clear space and move the bigger machines > around. > Local pickup is preferred and will get priority over any > shipping. > > My phone number is int+46 (0)73 98 67 881. > > /G?ran >

17 years, 4 months

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LIST ADMIN

by jwest＠classiccmp.org

Greetings Folks! As many of you noticed almost a year ago, we started having issues with the classiccmp server. Some of these were hardware issues, some software, etc. Due to the extreme generosity of Al Kossow, a new server was recently provided for the list. It is a very nice 2U dual cpu 2.2ghz opteron with 4gb ram, dual gigabit ethernet, and six 300gb hot swap ata drives. Two of the drives are mirrored (gmirror) and hold the OS (freebsd 7.1) & software. Of the remaining drives, 3 are in a zfs raid5 pool and one drive is a hot spare. These drives hold the websites, ftp sites, mailing list data, etc. Over the past few weeks I've been working to migrate all the classiccmp-related websites that I host on the server to the new machine. Last I did the classiccmp.org website (which means the archives were unavailable for a week or two as they existed {and were still being updated} on the old server). A day or two later I migrated the archives and finally yesterday - the list itself. To the best of my knowledge, all should be up and running well. There is *STILL* a problem with the htdig indexing of the lists. I am going to finally dedicate some time to researching that. I've been putting it off for eons because I've mostly forgotten everything I used to know about HtDig. I still have to do a little work to get metrics back up, unfortunately my favorite tool (mod_watch {interfaced with cacti}) is no longer supported so I may be looking for a new tool along those lines to implement. If you have suggestions, please email me off-list, I don't want to start a long off-topic discussion of modern hosting tools. I would like to post a list of all the classiccmp-related websites, ftp sites, etc. that are lurking on the server, as I suspect some are not commonly known. Everyone who has things hosted on the classiccmp server is aware of it - so if you object to me posting your URL please email me within the next few days and let me know and I'll omit your site. I'd like to take this time to re-iterate my offer to host any classic computer related websites, ftpsites, mailing lists, wiki's, blogs, etc. at no charge. I don't want to run the site, I just provide free hosting and bandwidth - the site is still yours. The server is in a world class datacenter with serious bandwidth - not on a DSL line in a basement or anything :) Along those lines, several people recently asked to move their classic computing sites to the server and I asked them to wait till the new server was up. We have gobs of free disk and the machine is reliable now, so re-contact me and we'll get it up and running. My classiccmp email address got to a half gig, it will be a long, long time before I skim through it. However, I have put it into a different mailbox so I can definitely see any new emails to my classiccmp address and will keep on top of those. Or attempt to :) I am trying to get back to things classiccmp related - as well as actively reading the list again instead of just watching the server. I departed for a while due mostly to classiccmplist-burnout and "work stuff". The work stuff has mostly settled down, and I find myself very much wanting to dig back into my beloved DG's, HP's, and yes, even the DEC's </troll> My last acquisition was an excellent Data General Dasher D200 terminal, which will look awesome sitting next to the Eclipse S/130. Next project is to make room for a metric boatload of 800/1200 DG minis and get them here instead of storage. Glad to see all the familiar faces, as well as some new ones. Best regards, Jay West

17 years, 4 months

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dumb rx01 image question

by bqt＠softjar.se

Paul Koning <Paul_Koning at Dell.com> wrote: >>>>>> >>>>> "Don" == Don North <ak6dn at mindspring.com> writes: > > Don> The 'even/odd-skew-by-6' algorithm mentioned in a previous email > Don> is what I found works for XXDP. It is probably the DEC > Don> 'standard' for RX01/02 drivers. > > I would assume that is the case. I found it in a RSTS driver, and > the that that two very different systems share a mapping function > suggests it's a DEC standard. (DEC certainly tended to standardize > this sort of thing company-wide.) Yeah. I can report that RSX do the same skewing/interleaving as well. And to make the point even clearer to the original poster: this is not something simh is aware of, or involved in. This is a mapping algorithm done by the PDP-11 in software (in the driver). So it definitely applies in this case. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

17 years, 4 months

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Progression of search technology (was Re: The lost art)

by shoppa＠trailing-edge.com

Fred Cisin <cisin at xenosoft.com> writes > You don't think agree that even the theoretician should understand that > some algorithms can take advantage of existing order and end early, while > others are a fixed duration? > > > Example: The library is doing a "retrospective conversion" of its card > catalog to an OPAC ("Online Public Access Catalog"). The cards are > mechanically scanned. They are nominally in order, however, due to being > handled by humans, a lot, there "might be" some errors in sequence. > "Might" - yeah, right. Which sort is "better"? "Shell-Metzner" or > "shaker"? In the past couple years Google and Amazon return search results to not just the title or author, but the text in the book if it has been OCR'ed or was originally electronic. Obviously Google knows a lot about efficient free-text searching but other folks know it too. In the past 15 or 20 or maybe even 30 or 40 years in the right circles (I do not hang around in database circles! But I was using Rdb a while back) the catalog would be loaded straight to an indexed database with several keys arranged for easy alphabetical sorting. The indexed database might even be smart enough to allow free-text or associative searching through some clever trickery. Even if there wasn't an index on the field we wanted to sort on there's probably the SQL "ORDER BY (whatever)" keyword. I will admit that databases can do some spectacularly slow things if you build your indices wrong, and even the most expensive version of Oracle can suddenly become much slower than an Apple II running a linear search on a cassette-tape file in the hands of the clueless. In the past 10 years or so, I'd just say (in Perl) "sort keys %hash". Surprisingly until fairly recently this could, worst case, be a quadratic sort but they recently put some tricks in (preshuffling) so this will basically never happen. If I was interviewing a recent CS graduate I would expect him to not address the problem of a card catalog index by talking only about sorting, I'd expect him to know some of the newer technologies - databases with keys; maybe even knowing about hashes if I ask about how a database implements an index; possibly knowing about the indexing technolgies allowing free-text searches. If he started talking about bubble vs shell sort I would go "OK, you got the points for knowing about sorting, now teach me about this new stuff" about 10 words in. If I wanted to know what he knew about how algorithmic complexity I'd ask him about bogosort which probably they didn't teach him about in school, but would give him a leg up if he had been reading or maybe even contributing to the Jargon File for the past few decades. If a candidate agreed with me that buying Oracle got the governor of California fired, I'd hire him on the spot. If I had a new hire and I saw him writing any sort algorithm, I'd teach him how to do it by using one already built into the system. Tim.

17 years, 4 months

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Looking for Compaq LTE (8088) power supply or voltages...

by derschjo＠mail.msu.edu

I've got an old Compaq LTE (I believe it's the original 8088 variant, but I can't find a model # on it anywhere) that I'm trying to recover some files from for a friend. The power supply is long gone. The hard drive is certainly some proprietary interface, so I'd prefer to try to get the laptop running before I try to take it apart and read the drive in something else. Anyone have a power supply for one of these, or know what voltages it takes? (It has a 4-pin power connector, don't know if this style of connector has a name...) Thanks, Josh

17 years, 4 months

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Cromemco 68000 on ebay

by rdawson16＠hotmail.com

I thought I recall some of you guys looking for one of these, in a few chats last week. I'd buy it, but I dont have a system (anybody have one they would sell to to a fellow vintage fan?) Randy ebay $40 at present 250394374739 _________________________________________________________________ Hotmail? is up to 70% faster. Now good news travels really fast. http://windowslive.com/online/hotmail?ocid=TXT_TAGLM_WL_HM_70faster_032009

17 years, 4 months

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free stuff from Milwaukee Wisconsin

by frustum＠pacbell.net

I sent this a couple weeks back, about when the list went down for a few days. I'm not sure if it was received or not. There were no inquiries, so either nobody wants S-100 stuff these days, or the message didn't get out. Sorry if it is a dup and nobody is interested. A gentleman contacted me and said he had some things that his brother had made/used back in the day, but he wanted to find a new home for them after his brother died. I have given away my S-100 stuff, so I have no use for it. He doesn't want his email address on the web, so contact me and I'll put you in touch with him. Al Kossow, this stuff is coming from Bob Senzig -- this was his brother Don's stuff. 1) Z-80 CPU 2810A assembly number 02810001A (mfg) 2) Model 2422 multi mode floppy disk controller assembly number 02422-001 rev B (mfg) 4) Data technology 018A000 rev 2 (manufactured) 5) Vector Graphics 64K RAM Assembly number 3504 (mfg) 6) Vector Graphics serial card ZCB (mfg) 7) Processor Technology Co. 2KRO (hand wired) with boot PROM 8) GODBOUT 4K static RAM (hand wired) 10) Vector Graphics floppy disk drive disk controller assembly number 356500000600 (mfg) 11) Altair DMA interface 1976 (hand built) 12) Processor technology 4K RA (hand assembled) 13) 4K static RAM by Solid State Music 1976 (hand assembled) 15) Extender card (hand assembled) 17) IMS Associates Inc 1976 CRI rev 1 Audio interface board (hand assembled) 18) Godbout 4K byte RAM module (hand assembled)

17 years, 4 months

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PLM86 compiler needed

by dmabry＠mich.com

Ok, I have found the 8" floppy disk with the ISIS-II PL/M-86 compiler on it. It is transferring at the blazing speed of 2400 bits/second using Kermit protocol into a PC. From that point I will be able to send it to a computer that sends my e-mails out. So we wait for 2400 bits/second to transfer the plm86 compiler with its overlay files. It really is slow. I love the technology, but it is slow! Stay Tuned for Updates! Jeff Erwin said the following on 4/11/2009 6:42 PM: > Yes, I do! Thanks! > > On Sat, Apr 11, 2009 at 3:32 PM, Dave Mabry <dmabry at mich.com > <mailto:dmabry at mich.com>> wrote: > > Jeff, > > Your requests all came through today. Don't know what was wrong > with the list server, but at the same time I saw your request here > I saw someone telling you that you have e-mail. > > My question is this. Do you still need the PLM-86 that runs under > ISIS-II? If so, I can probably locate it. I'll have to serial > transfer it from my MDS to a PC, so I don't want to do it if you > already have it. > > Let me know if you still need it. > > Dave > > Jeff Erwin said the following on 4/6/2009 1:12 PM: > > I purchased the Godbout 85/88 card for my Imsai 8080, seems to > be working > fine so far, although > not at 5Mhz. I must have a memory card that can't handle the > blazing 5 Mhz > access. > > I am looking for a PLM86 compiler. I have the PLM80 compiler and > linker/locator > (if anyone needs this, please let me know) but am struggling > finding the > PLM86 > compiler and associated linker/locator. I am currently loading > code into my > system via a HEX loader I wrote and sending the hex file in > via the serial > port > from my Mac Pro (yes, a $5000 quad-processor computer serving > as a dumb > terminal > to my 2Mhx 8080). > > I want to be able to write PLM86 code and do the same for the > 8088 on the > GodBout card. > > Anyone know where I can find PLM86? > > Jeff Erwin > > > > > >

17 years, 4 months

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Tek 4000 graphics manuals for free

by rdawson16＠hotmail.com

Hi all, I went to a electronic store near Tek and found these gems if anybody wants them: 4501 Preliminary Service Manual 4050 Graphics System reference Manual T4002 Graphic Computer Terminal Specification Unless of course somebody has a 4051 the want to get rid of... How much? Randy _________________________________________________________________ Quick access to your favorite MSN content and Windows Live with Internet Explorer 8. http://ie8.msn.com/microsoft/internet-explorer-8/en-us/ie8.aspx?ocid=B037MS…

17 years, 4 months

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PLM86 compiler needed

by jefferwin＠gmail.com

I purchased the Godbout 85/88 card for my Imsai 8080, seems to be working fine so far, although not at 5Mhz. I must have a memory card that can't handle the blazing 5 Mhz access. I am looking for a PLM86 compiler. I have the PLM80 compiler and linker/locator (if anyone needs this, please let me know) but am struggling finding the PLM86 compiler and associated linker/locator. I am currently loading code into my system via a HEX loader I wrote and sending the hex file in via the serial port >from my Mac Pro (yes, a $5000 quad-processor computer serving as a dumb terminal to my 2Mhx 8080). I want to be able to write PLM86 code and do the same for the 8088 on the GodBout card. Anyone know where I can find PLM86? Jeff Erwin

17 years, 4 months

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Apple (Macs, etc) available in south Florida

by oldcomputers＠oldcomputers.net

-------------------------------------------------------- I do not own this equipment, please contact Alice below: -------------------------------------------------------- I live in South Florida, have some old Mac equipment - MacPlus, Quadra, etc. Syquest drive and tapes. I may be running out of room to keep them. Is there a collector in my area? Alice Silver <alicessss at aol.com> -------------------------------------------------------- I do not own this equipment, please contact Alice above: --------------------------------------------------------

17 years, 4 months

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(was) I [don't] hate E-Bay (was ...) Annoying bidding from buyer's perspective

by dgahling＠hotmail.com

the problem is buyers jacking up their own auctions using friends or fake accts. typically early bids are not actual bids they are just to jack up the price. granted there are honest sellers and buyers but there are practicaly no controls in place for frauds, even in some cases fake items its not always the seller but its a lot harder for a bad buyer to rip people off damn near impossible if yer careful not so with bad sellers and fleabay doesnt care one damn ---------- Sent via Telus My Email 2.0 -----Original Message----- From: js at cimmeri.com Sent: 4/11/2009 6:04:14 PM To: On-Topic and Off-Topic Posts Subject: Re: (was) I [don't] hate E-Bay (was ...) Annoying bidding from buyer's perspective >> However from my perspective, every dime over $5.10 (which it was at at >> 1am saturday morning, a few hours before the end of the auction) was a >> waste of my money. >> > Waaaaaaaaaah. Someone bid against me, waaaaaah. > > Its an auction. Get used to it, or only purchase "buy-it-now" items. > I'll add, it astonishes me how some people expect everything for nothing. Are they fresh in from some third-world country where they earn $1000/year for hard labor? Penny pinchers to an extreme degree! jS

17 years, 4 months

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Old Timers [was: CompuPro CPU-68000]

by dm561＠torfree.net

-------------Original Message: Date: Sat, 21 Mar 2009 15:31:32 -0700 From: "Chuck Guzis" <cclist at sydex.com> Subject: Re: Old Timers [was: CompuPro CPU-68000] On 21 Mar 2009 at 15:50, Jim Battle wrote: > Chuck, that was spoken like a true old-timer, but your derision is > laughable. "Hey, you damn verilog coders, get off my lawn!" > > I'm surprised, as you saw the transition from tubes to transistors to > ICs, so it shouldn't shock you that the next evolution of integration > requires just as much engineering and intelligence, although the > problems to be solved are somewhat different. Oh, I was trying to be humorous about it. I write Verilog too; it's fun in its own way. I could just have easily grumbled about ... laying out 14 AWG busbar on mahogany breadboards between surface-mount (meaning that they're attached with woodscrews) components. Times change, and all too frequently, we don't. All we can do is grumble. --Chuck --------------Reply: Aw, some folks just don't get irony and subtle humour... But you're right: I never thought about it but we've come full circle with surface-mount techniques; I wonder if royalties are being paid... m

17 years, 4 months

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Wanted: IBM 3741/3742 keyboard.

by h.j.stegeman＠hccnet.nl

Hello all, Does anyone have a keyboard of an IBM 3741 or 3742 spare ? Mine has stopped working. IBM has used two custom LSI chip in this keyboard and makes it now non repairable :-( Please contact me off list if you can help. Thanks Henk http://www.ibmsystem3.nl

17 years, 4 months

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I [don't] hate E-Bay (was Cromemco 68000 on ebay)

by Watzman＠neo.rr.com

I am a "Power Seller" with over 10 years on E-Bay, probably 5,000 transactions, but I am not a business and most of my activity is buying, not selling. First, re: "I hate [ebay] because it defrauded me in 2005", that is, in all probability, BS. E-Bay didn't defraud you, the other party (buyer or seller) did. E-Bay is not a principal to the transaction; it is merely a venue for bringing buyers and sellers together. Second, IF YOU KNOW HOW TO USE E-BAY, it is EXTREMELY safe. Most of the sellers (and buyers) are honest, more than 99% I'd say. If you pay through Pay-Pal with a credit card, you have about 3 levels of protection even if the seller is fraudulent: E-Bay, Pay-Pal and your credit card company. You do have to know how to use the various systems to protect yourself; you can look at a seller's history, and about the comments that people who have dealt with that seller previously have left about their transactions. If you educate yourself about how to use E-Bay, it is quite safe. Is it perfectly, totally safe? No, of course not (neither is any other marketplace), and getting issues resolved when they do occur can be a hassle and can take months and require that you be persistent and well organized. There are a surprising number of people with an aversion to E-Bay. That's their loss, because it's one of the greatest things that the Internet has brought us, both as buyers and as sellers. Barry Watzman

17 years, 4 months

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Dot Matrix head rebuild...Anadex and others.

by jrr＠flippers.com

Anyone have any info on rebuilding the head for a regular 9-pin dot matrix printer? I have an open pin-5 coil on mine, and I would like to take it apart to see if I can repair/replace the coil, BUT I am a bit concerned about taking these things apart. Springs flying off, etc. Looking on-line does not turn up anything (so far) on dismantling these suckers. If necessary I will document it myself, but was hoping the info was already out there! The head I have is an Anadex DPH-100, and the only place on-line that shows them no longer repairs 'em! Nor did the tech I spoke to recall any details... John :-#)#

17 years, 4 months

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CompuPro CPU-68000

by dm561＠torfree.net

-------------Original Message: Date: Fri, 20 Mar 2009 16:36:28 -0700 (PDT) From: Michael Hart <imsaicollector at yahoo.com> Subject: Re: CompuPro CPU-68000 You know the hiring managers I normally talk to have no knowledge of hardware design. So even if I am showing off my electrical engineering prowest by implementing a IEEE-696 memory board. I have the Protel product (www.protel.com), a $4500 piece of software back in 1999/2000 which became Altium (http://www.altium.com/) used to design the most sophisticated hardware. The manufacturing of the boards I understand have become quite cheap. Anyway thank for URL. But remember I am primarily as very senior software developer with lots of hardware know how. So how would that hardware know how be exploited in getting me contracts? At least that has not been the interest when people look at me. But still it is a skill I would one day like to exploite in getting a contract Michael ------------Snarky Comment: Cleaning up your spelling and grammar couldn't hurt in getting those contracts; some people do still care... another michael

17 years, 4 months

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looking for Orchid PCTurbo 186 drivers/software

by mskipatrol＠nc.rr.com

Does anyone have a copy of the Orchid PC-Turbo 186 accelerator card diskette/drivers ? I have one of these cards but no drivers for the card. Thanks..... mwhite8 at nc.rr.com

17 years, 4 months

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Which way to go, from now on?

by csquared3＠tx.rr.com

> Message: 16 > Date: Sun, 22 Mar 2009 10:48:30 -0500 > From: "Michael B. Brutman" <mbbrutman-cctalk at brutman.com> > Subject: Re: Which way to go, from now on? > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > Message-ID: <49C65DCE.20701 at brutman.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Coding ... > > Getting a development environment setup for a machine can be fairly > intensive. Especially if the machine had a few vendors that provided > environments. Once you are setup, nothing teaches you more about the > machine than trying to wring something useful out of it. ;-0 > > My favorite example .. the TCP/IP stack that I wrote for DOS. It is > part of a long process to put a BBS on my PCjr. I missed the > opportunity 20 years ago to have a dialup BBS, so I'm making up for it > with a multi-user Telnet BBS. > > Getting the development environment setup, writing code that works and > is stable, and wringing the performance out of it has put me a lot > closer to the machine that just powering it on once in a while. Given > your collection, you could spend a few lifetimes doing software. > > > Mike <ears perking up> As an oldtimer trying to teach myself more about TCP/IP, it has occurred to me to wonder whether a similar project might just be the best way to truly understand the protocols. I think it is probably best that I continue working my way through Stevens' and Snader's books first though. Later, Charlie C.

17 years, 4 months

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