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

by julesrichardsonuk＠yahoo.co.uk

> hi, > >> (the chip in question is a ST9293J9B1/AEL for the record, > What is this TV model & brand? It's a Ferguson T7073SJD, using an ICC9 chassis. One website containing a faults database listed the failure of that chip giving the exact symptoms that I see (no sound when the set warms up and the remote operation goes unresponsive). I've pulled the main board and will re-solder all the joints in that area just to check; there's only one electrolytic as part of the circuitry surrounding that chip but I'll replace it with a known-good just in case. Tony's point about the crystal was interesting - I didn't think those things ever failed. I'll see if I've got a spare to try anyway. The set's awful inside - very cheaply made with little thought to cable runs, connectors, and how the various boards plug together. Guess they must have had different teams working on different sections and management for the overall project wasn't exactly what it should have been... (typical of more modern equipment unfortunately!) cheers Jules For a better Internet experience http://www.yahoo.co.uk/btoffer

23 years, 4 months

2
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IBM 5161

by cb＠mythtech.net

>But in the XT, one slot is different. Why? -chris <http://www.mythtech.net>

23 years, 4 months

10
30
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DF32x4 questions; software needed

by djg＠drs-esg.com

>From: Ethan Dicks <erd_6502(a)yahoo.com> >--- "Dr. Charles E. Morris" <c.morris(a)townsqr.com> wrote: >> registers... Ethan Dicks has pointed out that I should look at the >> drivers in OS8 and TSS8 to see if this will be a compatibility problem. >> http://www.ibiblio.org/pub/academic/computer-science/history/pdp-8/os8/os8.… ftp://ftp.dbit.com/pub/pdp8/tss8 >As I mentioned earlier, I've only done some basic DF32 twiddling >from a PDP-8/i to prove that the interface mostly worked (and to >diagnose my repairs of a smoked rotation sensor board). I've never >had the joy of an 8K machine + DF32s, so I've never had an OS to >explore them. > 4k and 1 DF32 is enough for Disk Monitor System. I built an image with the standard programs and put it at ftp://ftp.pdp8.net/software/dms/ The paper tapes images to build it and the manual are pointed to in the readme. It was installed for 8k since my 8/i is 8k but can be installed for 4k. I also have programs to dump and restore DF32 images over the console port. They aren't online yet since they need a little more cleanup but I can send you a copy. Let me know if you need any help. David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights.

23 years, 4 months

1
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Thanks for the welcome

by tradde＠excite.com

Well, I am mainly into pdp-8 and pdp-11. Those were my first computers when in high school and college. But pdp-10s also interest me. Actually anything pdp related might get my interest. I have a pdp-8e, pdp-11/34a, and a pdp-11/84e. One day I hope to have a pdp-8i as that was the first computer I ever used. I am still working on getting all my systems fully operational. The 8e will have a dual rk05 drive connected to it. The 11/34a will have an RL02. I am not sure what the 11/84 will have as I have only had it a short while. Tim Radde >Well, let me be the frist so say "hello" & welcome aboard! Yes, >you'll >like this place, it can get intresting, some of the discussions get a >little off on a tangent, but aside from that, I've learned a whole >bunch of info I never would have known. _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!

23 years, 4 months

2
1
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Interesting 8/L problem (more than you want to know about switching transistors)

by charlesmorris＠direcway.com

I was sending blocks of data to and from my DF32x4 emulator when I noticed that Bit 5 was always writing a zero to the disk - turned out to be a bad bus driver (M623 in slot D28) and I found a short >from collector to emitter of the output switching transistor. After destroying the transistor removing it, I found out the clamping diode was the actual shorted part :^P so after replacing it with a 1N4148, I grabbed the nearest 2N3904 switching transistor and put it in. Guess what - Bit 5 still didn't work, although it was now changing states! To make a long story short, I found that the rise time of a 2N3904 is reasonably fast (around 50 nS) but the storage time in the circuit DEC used (a 7402 NOR gate driving the transistor base through 390 ohms) is on the order of 500 nS. (Once a bipolar transistor is turned on, there is a significant time required to extract the charges from the base so it will turn off, especially if a negative drive voltage is not available). Although the 7402 output waveform was square, this particular transistor base voltage was dropping much more slowly than any of the others; I could see on the scope that this made the BMB5 output change from 0 to +5 volts AFTER my disk circuit wrote the data into the NVRAM! Some research through the data books showed that a 2N5769, for example, would have been a much better replacement, with a storage time spec of 13 nS. Fortunately, after a little experimenting with "peaking" capacitors across the 390 ohm resistor, an 820 pF gave a sufficiently fast turn-on and turn-off with the 2N3904. So the object lesson here is that all switching transistors are not created equal, even in 1960's technology! Naturally since the DEC part numbers are no longer available, some thought is needed before just deciding on PNP or NPN... -Charles (Relearning long-dormant EE skills!)

23 years, 4 months

2
1
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New Finds & question

by quapla＠xs4all.nl

Hello all, This morning I picked up some Dec stuff : 1x Alpha 400/166 + 1 Dec storage tower running Unix 1x Alpha 400/166 + 1 Dec storage tower running NT 1 Infotower/infoserver 1000 with 5 CD-Rom's 1 Vax 4000/100 With it came a box of cables, for which I have no idea where they can be used for. One of the cables is marked BC18D-02 and is about 50cm long, the other is a cable which has on one end a sort of high density connector and has a small block in the middle which forks into 4 D25 connectors. The vax 4000 has the female connectors at the back, am I right if these cables are for terminals? Thanks, Ed -- The Wanderer | Politici zijn onbetrouwbaar quapla(a)xs4all.nl | Europarlementariers: zakkenvullers http://www.groenenberg.net | en neuspeuteraars. Unix Lives! M$ Windows is rommel! | Wie mij te na komt zal het weten. '97 TL1000S |

23 years, 4 months

3
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Hello, I am new to this list

by tradde＠excite.com

I should have said Hello before my first post. I just found out about this list. It seems quite impressive and very useful. I know I will get much use from it. Hopefully I can answer a question ever now and then too. Tim Radde _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!

23 years, 4 months

4
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Available: Livingston PortMaster Internetwork Router.

by vaxzilla＠jarai.org

This was heading out towards the dumpster today, so I grabbed it. From what our network admin told me, this router is from the early 1990s. It looks like Livingston made several varieties of these plain gray boxes. The identifying markings on this one are very sparse, so I can't provide much in the way of info about /exactly/ which model this is. Dimensions are 3.2" x 16.8" x 11.5" and it weighs around 12 lbs. It has a DB-25F console/diag port. It has another DB-25F port that's switchable between RS-232 and V.35 (so, presumably, you could hook up a slower serial device or a T1/E1 device to this). And then it has a choice of RJ-45, BNC, or AUI ethernet port. The only identifying marking of note apart from the "PortMaster Internetwork Router" on the front is small label which reads "Model: IRX S/N: 1A13813". Some info related to the Livingston and their products can be found here: <http://portmasters.com/>. This one does power up and I was able to get a login prompt by connecting a terminal to the diag port with a null modem cable at 9600 8-N-1. The login and password are unknown. The condition of it is also unknown, though it's believed to have been working when it was taken out of service a number of years ago. Available to the first taker for US$2 + shipping to anywhere in the US or Canada from zip code 90232. It won't be until sometime next week that I'll have the time to pack, estimate shipping, and send this out. -brian.

23 years, 4 months

1
0
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Soroc terminal/Northstar DOS wanted

by vcf＠siconic.com

See below and respond to the original sender. Reply-to: <paulmoadib(a)aol.com> ---------- Forwarded message ---------- Date: Fri, 4 Apr 2003 19:17:39 -0800 From: Philip Baily <paulmoadib(a)aol.com> To: vcf(a)siconic.com Subject: VCF Feedback! Do you know of anyone with a SOROC IQ 120 Terminal for sale? (I can offer $100.00+ for it if is in good working condition.) Also, I am looking for a copy of Northstar DOS / BASIC to run my NS Horizon computer. Do you know of anyone who might be able to help me get a copy? Many thanks, Phil Baily -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
0
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Need IRIS Antivirus software ($$$)

by vcf＠siconic.com

This is a follow-up to a message I posted on Monday. I am looking for some early (circa 1990) antivirus software made by a company called Iris (maybe spelled "iRiS"). This may have gone under the names of "Virus-Free", "Antivirus" and "Antivirus Plus" (sometimes in combination with the company name "IRIS"). The software was distributed by Iris and the software apparently written by Computers of Israel. The iRiS software was included in the system software that came with an Arche computer of the same vintage (1989-1990). It is the software that I am really after but the computer also has some use. If you tried contacting me about this but had your message bounce it was because I was moving my server around. Sorry. Please try again. I have posted bounties of $200 for the computer and $100 for the software. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
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breathing life into old chips

by julesrichardsonuk＠yahoo.co.uk

hi, this is sort of off-topic as it applies to my TV and not a computer, but I bet some of the folks here can offer advice... :) the microcontroller in the set seems to have developed a fault which only appears when the set's warm. Tracking down a replacement seems to be easier said than done as the chip was obviously discontinued a while back (and then I'd have to worry about the on-board ROM anyway). At the moment though there's no heatsink on the chip - if I do stick a heatsink on it in the hope that it keeps it cool enough to operate, is it still likely to fail at a later date anyway? Once a chip's started to exhibit heat-related problems is that basically the end of it even if something's done about the cooling? I figure some of you people will likely know about these things :) (the chip in question is a ST9293J9B1/AEL for the record, but no infomation appears to exist on the web or on ST's site for it; wish I could get pin-outs to check that it is the chip and not surrounding circuitry that's failing) cheers! Jules For a better Internet experience http://www.yahoo.co.uk/btoffer

23 years, 4 months

4
3
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Free (ish) tape drive & hard drive

by Lee.Davison＠merlincommunications.com

Further information .. The FACIT tape drive can be used an a PDP 11/34, see .. www.tno.nl/instit/fel/museum/computer/en/comp783E.html The AMPEX hard drive is 10MB, ST506 interface, full height 5.25" Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years, 4 months

1
0
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The Gospel according to ARD:

by jpl15＠panix.com

Tony Duell provides us with an exemplary indicator of the true collector: > >and give you a nasty (and possibly fatal) shock, or worse still do ^^^^^^^^^^^^^^ >serious damage to said classic computer. > Collectors are many; vintage computers, few! ;} Cheers John One-Hand-In-Back-Pocket-At-All-Times Lawson

23 years, 4 months

4
5
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Cool calculator

by jrkeys＠concentric.net

I picked up a Compucorp 324G Scientist calculator/micro computer at a thrift today for $8.08. Seems to work great.

23 years, 4 months

12
16
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk > >> MTR-90 is in the ROM on the 89's CPU board. My MTR-90 manual indicates > >[...] > >> It certainly seems as if you can run both controllers in one machine. > >You most certainly can. My Z90 (essentially the same machine -- AFAIK the >differences are that it came fully assembled ('Z', not 'H'), and came >with 64K RAM, has MTR-90, the hard sector controller and the >double-density soft sector controller. The former is cabled to the single >built-in drive, the latter to an external drive box. > >It will boot either HDOS or CP/M, and can use both types of disks > >-tony > The Z90 is built to be 64K a H89 isn't. As far as I recall, the H89 took more than a simple jumper or switch to make it CP/M compatable. Also, one should note that HDOS came in both hard and soft sectored. Dwight

23 years, 4 months

4
6
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IBM 5161

by n8uhn＠yahoo.com

The ibm 5161 expansion box was designed for use with the ibm pc. the pc had fewer slots then the later released pc xt and it's power supply was too small to handle a hard drive. the exp box added a hard drive to the system and provided extra card slots ( i think the box also had additional bios or came with an extra fixed disk rom chip that went into the pc). the card that connects to the ribbon cables that come >from the exp box goes into one of the pc's card slots. i cannot remember if it is slot specific or if it can go into any slot - there is a plate on the pc's back that removes to allow the ribbon cables to exit the case. a local retired ibm ce had asked me years ago if i had ever seen one - as he was looking for one at the time. i was told that the expansion box was a little rare because, shortly after the pc was released that pc xt was released . the pc xt has a large enough power supply to support a hard drive as well as the bios to operate one and it has eight card slots. Bill Message: 44 From: "Witchy" <witchy(a)binarydinosaurs.co.uk> To: <cctech(a)classiccmp.org> Subject: IBM 5161 Date: Mon, 31 Mar 2003 20:25:09 +0100 Reply-To: cctech(a)classiccmp.org Hi collecting folks, A surprise consignment arrived for me this morning - an IBM 5150 in not bad condition complete with keyboard/monitor and a 5161 expansion box, spare expansion card and 2 extender cables.....reading the classiccmp archives back to 1998 makes me think I should be impressed since the 5161 isn't that common? It all apparently works but I won't be able to set it up fully till tomorrow. Not much info about it on the web either, though because 5161 is obviously bits of a phone number there's a very high signal to noise ratio..... cheers -- adrian/witchy www.binarydinosaurs.co.uk - the online computer museum www.snakebiteandblack.co.uk - monthly gothic shenanigans --__--__--

23 years, 4 months

7
11
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Handheld Computer organizer available

by anheier＠owt.com

I have this cool little Psion Organizer II, model XP available. It's a 6800 processor powered handheld computer. I have the COM link cable and a 32K Datapak. It appears to be functional. It was made in the UK. Someone out there probably knows the history of this little device. Best offer, please send zip code for shipping costing and I prefer Paypal. Thanks Norm

23 years, 4 months

2
2
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Free (ish) tape & hard drive

by Lee.Davison＠merlincommunications.com

I have surplus to requirements the following.. FACIT tape drive Model No. 4203 Prod. No. 9281 01 09 .. and .. AMPEX hard drive PYXIS 13 Part No. 3315422-01 Both are of unknown status having been stored in a garage for at least a decade and both show some signs of having been damp at some time (some corrosion). Both are heavy so will cost to post. Anyone interested in these please contact me off list. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years, 4 months

1
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semi-OT: Power Computing 100 power supply

by cb＠mythtech.net

>I've got a Power Computing 100, one of the earliest Mac clones >(equivalent to Mac 8100/100, though the logic board is physically >different). It seems that its power supply has died. It is a Seasonic >SSH-200G. I'm pretty ignorant about PSU standards, so am not sure what >I need to look for in a replacement -- a friend said "it looks like an >AT power supply, but that little 4-pin plug [which connects to the >logic board, I think] is non-standard, so a standard AT PSU won't work >as a replacement." It also has two large 6-pin plugs that plug into the >motherboard as well. The rest of the plugs are standard 4-pin. If you find out any info, forward it on to me. I recently aquired one of those as well, and the power supply, along with every other cable in it, has had all the wires cut. It looks like someone either was fired and pissed off, so they took their revenge on the machine, or more likely (since the hard drive is missing as well), the machine was officially "decommissioned" and rendered to an unusable state to take it off the books. Before I go thru the effort of patching the leads together, if I can find a suitable, available replacement, I'll go that route for the purpose of testing it to see if the system has been damaged in other ways (then if it works, I'll go back and patch the power supply together, just because it will be fun). I did ask a Power Computing list if the Power100 used a standard AT power supply, and was told that it does not. However, the person that gave me the response spent no effort discussing how it differs, but did spend 3 paragraphs telling me not to waste my time with a Power100 and instead to buy a used PowerTower Pro. So that told me that they just didn't get it, and didn't understand the interest in reviving an old machine... which also makes me suspect the validity of their answer (not that failing to understand old computers equals a lack of knowledge of the power supply... just that it seemed more like an uninterested/uninformed wave off of the power supply question in the effort to push me to a newer faster machine). -chris <http://www.mythtech.net>

23 years, 4 months

6
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DEC keyboard/mouse protocol

by erd_6502＠yahoo.com

Re: recent discussions Found this in section 14.38 of the VMS FAQ: http://h71000.www7.hp.com/wizard/faq/vmsfaq_016.html The protocol definition for the old DIGITAL keyboard and mouse interfaces is buried at the back of the QDSS section in the old VAXstation II manual, specifically, in the back of the VCB02 Video Subsystem Technical Manual (EK-104AA-TM). The keyboard wiring and protocol is in appendix B, and occupies circa 44 pages. The mouse is in appendix C, circa 12 pages. ... in case anyone wants to tackle a protocol converter. -ethan

23 years, 4 months

2
1
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DF32x4 questions; software needed

by c.morris＠townsqr.com

My "DF32x4" disk emulator is alive and talking to my 8/L and appears to be reading and writing blocks of data correctly. There are a few instructions that I did not implement (e.g. the "Maintenance" IOT's 6631-4 which the manual says are only used in "diagnostic programming". Also the DCEA instruction does not clear the extended address and EA registers - it would have taken quite a bit more logic to implement and there was no more room on the PC board; additionally the DEAL instruction would be used anyway, which combines the clear action with a load of these registers from the AC - so the clear would be superfluous. The DEAL and DEAC load/read register commands are, of course, implemented). Ethan Dicks has pointed out that I should look at the drivers in OS8 and TSS8 to see if this will be a compatibility problem (i.e. they may expect to be able to clear EMA and EA for some reason, rather than loading them from the AC). Can anyone tell me where to find the source code so I can verify this? Also, I would love to have a paper tape copy of 4K Disk System Builder to start a build of Disk Monitor from scratch (I already have a copy of a DF32 build thanks to David Gesswein). Anyone? thanks Charles

23 years, 4 months

2
1
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Ebka Familiarizor 6502

by Hans.Franke＠mch20.sbs.de

Now for something strange: Who of you has ever heared about a Ebka Industries Familiarizor 6502 I have just seen this little beast at ePay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=3409229078 Now, doing a quick search, nothing did show up, except a very short mentioning in Hans Pufals list. Any other info around? Gruss H. -- VCF Europa 4.0 am 03./04. Mai 2003 in Muenchen http://www.vcfe.org/

23 years, 4 months

2
1
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PDP-11/24 Available in Virginia

by timothy.p.radde＠lmco.com

Is this system still available? I am in Pennsylvania and might be interested.

23 years, 4 months

1
0
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Ultrix Driver Question

by sridhar＠neurotica.com

Hi people. I assume that SDI disks show up as /dev/ra* on Ultrix? What do the SDI controllers show up as? Specifically, the XMI ones? Peace... Sridhar

23 years, 4 months

3
2
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That pesky battery! (was: Re: semi-OT: Power Computing 100 power supply)

by mbates＠whoopis.com

Well okay then! I dug around in the pile of old Macs in the basement and found an identical 3.6v mb battery, which tested good...stuck that in there, plugged old PSU back in, and it boots! Hooray! Thanks for all the help, everyone! :) (Sorry Chris, guess I won't be getting parts to share with you now...good luck with your Power 100 repair project.) -- MB

23 years, 4 months

2
1
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Origins of Hierarchical Filesystems

by root＠parse.com

Hi folks, writing a chapter on filesystems, and was wondering if anyone knows the origins of the hierarchical filesystem (and no, it wasn't MS-DOS 2.0 :-)) I know TOPS-10 and friends used it, so it's got to be at least that old. Any takers? I'm looking for a ballpark year and the name of the OS and company... Probably just reply to me only; I'll be happy to summarize for the group. Thanks! -RK -- Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers! Robert Krten, PARSE Software Devices +1 613 599 8316. Realtime Systems Architecture, Consulting and Training at www.parse.com

23 years, 4 months

2
1
0 0

breathing life into old chips

by melamy＠earthlink.net

Hi Jules, one of the ways to isolate a heat issues is to find a can of cold spray (Chemtronics Freeze Spray). They sell them at electronics stores and places like www.mcmelectronics.com (just searcj for it there). You allow the fual to start and then selectivespray different parts to cool them down. If the fault goes away on a particular device then you have your culprit. best regards, Steve Thatcher Original Message: ----------------- From: Jules Richardson julesrichardsonuk(a)yahoo.co.uk Date: Fri, 4 Apr 2003 10:04:56 +0100 (BST) To: cctalk(a)classiccmp.org Subject: breathing life into old chips hi, this is sort of off-topic as it applies to my TV and not a computer, but I bet some of the folks here can offer advice... :) the microcontroller in the set seems to have developed a fault which only appears when the set's warm. Tracking down a replacement seems to be easier said than done as the chip was obviously discontinued a while back (and then I'd have to worry about the on-board ROM anyway). At the moment though there's no heatsink on the chip - if I do stick a heatsink on it in the hope that it keeps it cool enough to operate, is it still likely to fail at a later date anyway? Once a chip's started to exhibit heat-related problems is that basically the end of it even if something's done about the cooling? I figure some of you people will likely know about these things :) (the chip in question is a ST9293J9B1/AEL for the record, but no infomation appears to exist on the web or on ST's site for it; wish I could get pin-outs to check that it is the chip and not surrounding circuitry that's failing) cheers! Jules For a better Internet experience http://www.yahoo.co.uk/btoffer http://mail2web.com/ .

23 years, 4 months

1
0
0 0

semi-OT: Power Computing 100 power supply

by cb＠mythtech.net

>What I may do is look for an entire Power 100 machine on eBay (found >one last week, but the seller pulled it unexpectedly before it was due >to end). They're usually pretty cheap. If I end up going that route to >get a PSU, I'd be happy sell you the rest of the parts for cost of >shipping. (Probably ought to keep them for the next piece that fails in >mine, but I don't have the space for that. Plus I will become obsessed >with finding another PSU to make the second PC100 work, so I'll buy a >third, etc.) Obviously if we did this, you would still need a power >supply too, but might be a good way to share the cost of other parts. If you get one, let me know. I probably won't want all the parts, as that will just cause me to want to get TWO PC100's to work (much the same reason you don't want to keep it). However, I would want the SCSI and floppy drive ribbon cables, as even those have been cut in mine. The SCSI cable is trivial for me to replace (I can order one from anywhere, or even pull one from inside an old external hard drive... ironically, I just gave away a cable that would have worked fine since I had it sitting on a shelf unused for years), but the floppy cable isn't as easy, and I would most likely have to buy fresh ribbon of the right size, and swap the ends to it. Not a tough job, but more work than simply buying the cables from your parts machine. I may also want to buy some other parts, like the front panel switches, since those have had their leads cut as well (although those are all fairly easy to patch together). -chris <http://www.mythtech.net>

23 years, 4 months

1
0
0 0

semi-OT: Power Computing 100 power supply

by mbates＠whoopis.com

Hi folks, Dunno if this is within the 10-year rule or not, but I don't know who else to ask. :) I've got a Power Computing 100, one of the earliest Mac clones (equivalent to Mac 8100/100, though the logic board is physically different). It seems that its power supply has died. It is a Seasonic SSH-200G. I'm pretty ignorant about PSU standards, so am not sure what I need to look for in a replacement -- a friend said "it looks like an AT power supply, but that little 4-pin plug [which connects to the logic board, I think] is non-standard, so a standard AT PSU won't work as a replacement." It also has two large 6-pin plugs that plug into the motherboard as well. The rest of the plugs are standard 4-pin. Does anyone know what would be a compatible replacement? For example, I have been corresponding with the seller of this (which he will relist if I want it): http://cgi.ebay.com/ws/ eBayISAPI.dll?ViewItem&category=3670&item=3409672341&rd=1 which he says is the same except for being 250 watts instead of 200. But the model number's different and it looks a little different in the picture. Thanks in advance, -- MB

23 years, 4 months

3
2
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Anyone with LP25 Schematics? (or a power board)

by classiccmp＠knm.yi.org

Hi, I've got a DEC LP25 line printer here I just unearthed. I picked it up (ha!) a couple of years back and didn't have much success repairing it. Anyway - I discovered it after my parents tried to move it - oblivious to the fact the cover wasn't screwed on, and dropped it. Looks like just cosmetic damage - but impossible to test as the power board didn't work 2 years ago, and still doesnt. There's some cosmetic damage (read corner it landed on totally smashed) but I don't see any obvious damage to the workings. I've got the maintainance manual, which has the test points in for just about everything, apart from the power board. Only tells me the motherboard voltages, all of which are absent, apart from the 38V you get >from the PSU itself. So if anyone out there has the schematic for the power board in this beast (or even a complete set of schematics) and the ability to scan them in, that would be an enormous help. Also, any ideas for how to prod board with meter when it's in the machine would be useful, as you can only get to one side of the board due to the location of the card in the machine. The cards are plugged into standard edge connectors, with a pair of fingers on the cards themselves. I figure some sort of extender might be my best bet, but how to get hold of such a thing is another matter. I suppose I could always make one :&) Oh - I have a sneaking feeling the paper drive motor is fried (that's my initial thought to why the power board is dead) cause it doesn't look at all sane when you put a meter over it (infinite resistance if memory serves). So where to find a replacement would be nice. Any thoughts on the matter would be useful. It seems a shame to gut it and trash it when I'm sure it *could* be repaired. -- Matt

23 years, 4 months

1
0
0 0

IBM 5161

by n8uhn＠yahoo.com

Which is why i keep an old db25,ibm, 8 bit, single port "asynchronus serial communications adaptor" (serial port) card around. if you rotate one of the dip jumper packs 90 deg, it goes from async to current loop. try that with a multifunction card (hehe) the pins for current loop are different then the async pins. great for testing out teletypes or old ham gear ;) the other jumper pack sets com 1 or 2 Bill Message: 5 Date: Wed, 02 Apr 2003 20:51:28 To: cctalk(a)classiccmp.org From: Joe <rigdonj(a)cfl.rr.com> Subject: Re: IBM 5161 Reply-To: cctech(a)classiccmp.org At 06:35 PM 4/2/03 -0700, you wrote: >Fred Cisin (XenoSoft) wrote: > >>>>incompatible, and they had a giant surplus of serial (RS232 and current >>>>loop) cards that nobody wanted, so they provided a "FREE" serial card to >>>> >>>> >> >>On Thu, 3 Apr 2003, Tony Duell wrote: >> >> >>>Why did 'mobody' want them? A serial port is a very useful thing to have... >>> >>> >> >>Because they occupied an entire slot (out of 5 on the PC), and other >>companies sold "multifunction" cards that could use the same slot for >>serial, parallel, clock, and memory. Most of those were marketed as SIX >>functions - how many people remember what the other two functions were? >> >floppy, game port BEEP! Nope. Joe --__--__--

23 years, 4 months

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Do you recognize these boards?

by patrick＠evocative.com

Does anyone recognize these three boards? I haven't had much luck with Google... http://www.rigneyfamily.com/patrick/ Warning: LARGE graphics... best avoided if you are on a slow connection. --Patrick

23 years, 4 months

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Perkin Elmer 550 Terminal and CRT mildew

by ian_primus＠yahoo.com

I recently acquired a nice looking Perkin Elmer 550 terminal. I haven't powered it on yet, as I just unpacked it and it's still somewhat cold >from being shipped, but the person I got it from said that it works. It certainly looks to be in very good condition, I even have the manual. Right now, the only thing that worries me is that there seems to be a little bit of mold or mildew forming under the protective cover on the CRT. I remember seeing this mentioned on a site linked to on a post a while back (http://www.science.uva.nl/faculteit/museum/rampspoed.html). It isn't very noticeable, and only on the very corners, but I would like to clean it off, or at least find a way to prevent it from spreading. What causes this growth? What can be done to prevent it? I have a Hazeltine terminal that has a protective plastic cover, but no mold, and I want to keep it that way. Thanks! Ian Primus ian_primus(a)yahoo.com

23 years, 4 months

1
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Sector interleave (was: H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> > >> > I always wondered, if it was so easy to change the sector interleave on >> > disks to make them load faster, why didn't the original >> > programmers/designers optimize the interleave in the first place? >On Thu, 3 Apr 2003, ben franchuk wrote: >> It depends on your disk hardware and the speed of your computer. >> 1) Computers got faster 2) Disk i/o got dma rather than poiled >> i/o. > >It also depends on what kind of processinbg is being done to it during >loading. For example, dumping file contents into RAM can be done a lot >faster than loading a document into a word-processor. > >The fastest interleave occurs if the system can handle the next sector >immediately after the previous. In that case, the fastest sequence is >plain sequential, and a track can be read in a single revolution. But >when you add extra processing of the data during reading, (such as a word >processor loading a document), you could end up with NOT being ready for >the next sector in time, resulting in the read taking as many revolutions >of the disk as there are sectors per track. Alternating sectors might >reduce that to two revolutions (or skipping 2 sectors, etc.), but that can >easily be twice as long as necessary for a task that did NOT need the >extraneous processing. Most system software developers DO think that >they have optimized it. But they have optimized it for the type of file >access that they EXPECT you to be doing (usually whatever THEY do most). > >BTW, it can be done either by placing the physical sectors in various >orders (such as 1,3,5,7,9,2,4,6,8,10) OR can be done by a translation >between logical sector and physical sector (physical sectors numbered >1,2,3,4, . . . , but data that doesn't finish in sector 1 continues in >sector 3, etc.) > Hi Fred As I recall, most things worked well with just 2 to 1 interleaving. The major problem was how the H89 used the hard sectored. It was guaranteed to wait one extra sector hole, regardless of the speed of the software. This meant that consecutive sectors took an extra revolution+ to find the next sector. I always figured that Heathkit continued to sell the formatter with the 1 to 1 because it made the soft sectored look much better when there really wasn't much difference between the two. This was one of the big claims for upgrading to the soft sectored. As I recall, there was formatter from HUG that was like the one I had. I wrote my Forth because I couldn't justify a separate purchase of HDOS( which I later acquired ). I wrote my own disk interface to FIG's block access. That was when I noticed the slow access and rewrote my formatter. It wasn't until later that I found that all of the HDOS disk had the slow access as well. My H89 was my second computer, after my Poly88. I did find that some BASIC programs worked a little better with a 3 to 1 formatting but that wasn't typical. Even then, writes and read were different. Dwight

23 years, 4 months

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Need byte-splitter utility

by pete＠dunnington.u-net.com

On Apr 1, 11:28, Andy Holt wrote: > > What is the difference between odd/even and high/low? > > > On a "little-endian" bus: none > On a "big-endian" bus: flipping the low order address bit :-) > or is it vice-versa. Depends if it's word-aligned or not :-) -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

1
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

Hi As I mentioned earlier, I have a Forth that runs standalone on hard sectored. Since it is standalone, I've used it to make exact copies of other disk. I've done things like changing the interleaving to make about a 10X improvement in load speeds for many programs. It has been a while since I had the machine running. I can fire it up and check what I have. The only issue I have for making copies for others is the media. I only have a few hard sectored disk. For some reason, I thought that disk formats would last at least as long as 33 lp records. I didn't realize at the time that media was being obsoleted as fast as it was produced. I know better now. Anyway, if I can get it all running, I'll make copies if someone supplies media. Dwight >From: acme(a)ao.net > >Don -- > >Do you have the means to copy such a diskette? I have a set of the original >distribution diskettes here, and last time I checked the boot diskette was >good. > >Later -- > >Glen >0/0 > >> On Mon, 31 Mar 2003, Fred Cisin (XenoSoft) wrote: >> >> > On Mon, 31 Mar 2003, Jason J. Gullickson wrote: >> > > On that note, if any of you know where I could find a copy of CPM and a >> > > compatible C compiler on hard-sectored disks, that would be greeeaaat, >> > > yeah. >> > >> > Don Maslin can probably help you with the CP/M boot disk. But you are >> > going to have to immediately come up with software for serial port file >> > transfer, since that is the only PRACTICAL way to transfer files to or >> > from hard-sectored disks. >> >> I wish that I could, Fred. Unfortunately, I do not have a hard >> sectored boot disk for the H89 to make a copy from so I am >> stumped. >> - don >> >> > There have been several C compilers for CP/M. Aztec/Manx is probably the >> > best, but the most popular was Zolman's BDS C. Good news! As of 6 months >> > ago, BDS C became public domain! : >> > >> > On Thu, 26 Sep 2002, Rich Beaudry wrote: >> > >> > > >> > > Don't know how many of you are on comp.os.cpm, but in case you missed >> > it, >> > > Leor Zolman has decided to release the full retail package of BDS C, >> > > including *ALL* source code (compiler as well!) to the Public Domain. >> > > >> > > http://www.bdsoft.com/resources.html#bdsc >> > > >> > > Check it out! >> > > >> > > Rich B.

23 years, 4 months

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Ping Pat Barron

by mross666＠hotmail.com

If Pat Barron is reading this, could he email me please? mross666(a)hotmail.com Thanks Mike _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail

23 years, 4 months

1
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RSX-11M Plus [1,2] Directory

by univac2＠earthlink.net

My [1,2] directory has disappeared from my 11/23+ running RSX-11M Plus v4.1 Base Level 46!!! I have no idea how it happened, because the last time I powered up the system it was there! I know it was because the STARTUP.CMD file ran just as it should. I guess realistically it *was* something I did, although I'll never know just what it was... Anyway, the system now aborts it's startup procedure as soon as it can't find the STARTUP.CMD file and I'm able to log in as a privileged user from there. What I need to know is: 0) What exactly was in the [1,2] directory? Other than the STARTUP.CMD file, I don't know much about the directory's contents. 1) Could anyone give me an example of what the STARTUP.CMD file should contain? I'd like to make a new STARTUP.CMD file, but I have no clue what I should put in there. 2) Every time I try to issue a SET or SHOW command, I get the message: MCR -- Task active Why is that? 3) To prevent this from happening in the future, how do I back up files to floppy via the RX50? So have I totally messed up my RSX system? I hope not, because I don't have any distribution media. -- Owen Robertson

23 years, 4 months

1
0
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H89 CP/M hard-secored boot diskette

by acme＠ao.net

Don -- Do you have the means to copy such a diskette? I have a set of the original distribution diskettes here, and last time I checked the boot diskette was good. Later -- Glen 0/0 > On Mon, 31 Mar 2003, Fred Cisin (XenoSoft) wrote: > > > On Mon, 31 Mar 2003, Jason J. Gullickson wrote: > > > On that note, if any of you know where I could find a copy of CPM and a > > > compatible C compiler on hard-sectored disks, that would be greeeaaat, > > > yeah. > > > > Don Maslin can probably help you with the CP/M boot disk. But you are > > going to have to immediately come up with software for serial port file > > transfer, since that is the only PRACTICAL way to transfer files to or > > from hard-sectored disks. > > I wish that I could, Fred. Unfortunately, I do not have a hard > sectored boot disk for the H89 to make a copy from so I am > stumped. > - don > > > There have been several C compilers for CP/M. Aztec/Manx is probably the > > best, but the most popular was Zolman's BDS C. Good news! As of 6 months > > ago, BDS C became public domain! : > > > > On Thu, 26 Sep 2002, Rich Beaudry wrote: > > > > > > > > Don't know how many of you are on comp.os.cpm, but in case you missed > > it, > > > Leor Zolman has decided to release the full retail package of BDS C, > > > including *ALL* source code (compiler as well!) to the Public Domain. > > > > > > http://www.bdsoft.com/resources.html#bdsc > > > > > > Check it out! > > > > > > Rich B.

23 years, 4 months

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Two ESDI drives available

by CCTalk＠catcorner.org

Well, I've made up my mind. Actually, I found a controller for these drives and have installed them in a computer I use to emulate the old Tandy's I collect. How's that... Emulating a 20 year old computer on a 10 year old computer with 15 year old hard drives. Now, on to the next question. I need a 34 conductor flat cable with male IDC on one end and socket on the other. Anyone know of a good source for these? Thanks, kelly -----Original Message----- From: Kelly Leavitt [mailto:CCTalk@catcorner.org] Sent: Thursday, March 27, 2003 6:29 PM To: 'cctalk(a)classiccmp.org' Subject: Two ESDI drives available I have two: Imprimis 94166-182 (150 MB) Maxtor XT-4170E (170MB) Any one need them? I collect mostly old Tandy stuff. Model II, 12, 16, 6000 is my main focus. Any interesting uses for these boat anchors? Thanks, Kelly

23 years, 4 months

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Brian Instruments BRIKON Mdl 723 Floppy Drive Tester / Analyzer

by rigdonj＠cfl.rr.com

At 11:52 PM 4/2/03 -0500, you wrote: >Here's an interesting item for keeping those vintage floppy's in order? > >Brian Instruments BRIKON Mdl 723 Floppy Drive Tester / Analyzer They are interesting. I have one and I've bid on this one. Anybody have docs for the 727 multiplexer? > > > >I saw a web site where these were about $900.00 Typical Re-seller wishfull thinking!!! These sell on E-bay for about $20. Note that this one has a $15 "handling fee" in addition to the selling price and shipping. Again typical of re-sellers. They never miss a chance to boost their profits! Joe

23 years, 4 months

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[Fwd: Fw: [TRS-80] Fw: Ed Juge, RIP] (fwd)

by geneb＠deltasoft.com

This may be of interest....unfortunately. g. ---------- Forwarded message ---------- Date: Wed, 02 Apr 2003 06:24:50 -0500 From: Bob Klahn <bob.klahn(a)sev.org> To: trs80(a)cs.ubc.ca Subject: [Fwd: Fw: [TRS-80] Fw: Ed Juge, RIP] Just got this msg today. Didn't check yesterday. ----- Original Message ----- From: "Fustanella" <fustaNOSPAMnella(a)spammop.org> Newsgroups: comp.sys.tandy Sent: Tuesday, April 01, 2003 11:06 AM Subject: Ed Juge, RIP > It is with great sadness, all the more on a day known for its pranks, > that I must pass on from a friend that Ed Juge passed away today. He had > been battling a brain tumor for several months. > > Ed was one of those unique individuals who was instantly liked by anyone > who came in contact with him. He was a friend and a mentor to many > people, whether they knew him or not - his work with Tandy and the > TRS-80s, and his TANDYPRO Forum on CompuServe, helped bring personal > computing to the masses in the Seventies and early Eighties. When his > passion transferred to his later interest of RVing, he helped many enjoy > the road all the more. > > Friends and former co-workers of his plan to hold a 'Virtual Wake' on > Wednesday, April 2 at 9.00pm ET, 6.00pm PT. Anyone and everyone is > welcome to drop by and pay their online respects, share stories, and > perhaps a toast or two. It's being held on the RV Forum on CompuServe > (http://go.compuserve.com/rv - free to all, not just CS members), chat > room 1 (Virtual Campfire). > ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get 128 Bit SSL Encryption! http://us.click.yahoo.com/xaxhjB/hdqFAA/VygGAA/CFFolB/TM ---------------------------------------------------------------------~-> Using an emulator? Please join! Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Only $9.95 per month! Visit www.juno.com -- Bob Klahn bob.klahn(a)sev.org http://home.toltbbs.com/bobklahn

23 years, 4 months

3
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keyboard translator

by david＠dakota.dk

Hello there, Found your address through Google. We are trying to connect a Vax 3850 using a LK201 keyboard and a ?mouse to ps2 based KVM switch. Do you know of any products that can do the translation? regards, David Troutman

23 years, 4 months

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Brian Instruments BRIKON Mdl 723 Floppy Drive Tester / Analyzer

by melamy＠earthlink.net

I am with you guys, anyone who says untested may be selling a cabinet that has nothing inside and there is no protection against that. best regards, Steve Thatcher >--- Original Message --- >From: Ethan Dicks <erd_6502(a)yahoo.com> >To: cctalk(a)classiccmp.org >Date: 4/3/03 7:09:58 AM > --- Joe <rigdonj(a)cfl.rr.com> wrote: >> >I saw a web site where these were about $900.00 >> >> Typical Re-seller wishfull thinking!!! These sell on E-bay for about >> $20. > >Typical indeed. OTOH, when researching other devices of similar vintage, >plotters and protocol analyzers, to name some recent targets, they are >available from instrument companies for $1000-$2000 every day of the >week, and they will be *glad* to sell you one for that, but over on eBay, >it's more like $50-$60 every week. > >The brick-and-mortar catalog-oriented resellers are basing their prices >on a stiff percentage of the new price, and living off of "gotta have >a replacement now" commercial traffic. eBay resellers are limited to >what the traffic will bear over the course of a week, regardless of >individual customer demand. > >> Note that this one has a $15 "handling fee" in addition to the >> selling price and shipping. Again typical of re-sellers. They never miss >> a chance to boost their profits! > >I noticed that. I tend to shy away from those guys, no matter what >the deal seems to be - if they are pulling that, how do I know that >the "untested" condition doesn't really mean "tested, guaranteed >broken"? > >-ethan

23 years, 4 months

1
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Two ESDI drives available

by CCTalk＠catcorner.org

> For a cable already made up, IIRC cables like these, 34 pin > with male IDC on one end, and female IDC on the other end > came with floppy controller controlled tape backup drives, to add > a third device ( the tape drive ) to a floppy cable already being > used by both an A: and B: floppy drive. I've got a dozen of these cables. The problem is that they have a pin pulled that I think is used in standard DS/DD floppy operation, but not in tape operation. I tried several anyway and it would not work. Looking carfeully, most floppy cables use one of the ground pins as a key. I know that if I use a straight direct cable it works fine. With one of these cables it does not. I am not using these for the ESDI drives, but for my TRS-80 Model 4. The internal drives do not work, the metal cage is not deep enough for "standard" 5.25" floppies, and for cosmetic reasons I want to leave the old drives in place. So I need to put two dirves in an external case. However, Having something like this hard wired in place makes handling difficult. I tried to use a card edge connector from the bottom of the unit, but it then doesn't sense the drives. I'll just keep looking and trying differnet cables. I know Digikey has them, but at $20 each it would be more than I paid for the model 4. Thanks, Kelly

23 years, 4 months

1
0
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Victor Keyboard Identification

by Paul.Hills＠siemens.co.uk

John, Whereabouts are you in the UK? I would be interested in that Sirius 1, and could collect it if you're anywhere near Manchester. Would you be interested in a spare Epson HX20 as a swap? paul -----Original Message----- From: John Honniball [mailto:coredump@gifford.co.uk] Sent: 02 April 2003 20:02 To: cctalk(a)classiccmp.org Subject: Re: Victor Keyboard Identification Thomas Martin wrote: > You can also see them labeled as Sirius machines from > time to time. Yes, I'd have called it a Sirius keyboard! Mine are darker in colour, though; dark grey instead of beige. I have a spare Sirius I, if anyone in the UK would like one -- as designed by Chuck Peddle. -- John Honniball coredump(a)gifford.co.uk

23 years, 4 months

1
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Brian Instruments BRIKON Mdl 723 Floppy Drive Tester / Analyzer

by mail.list＠analog-and-digital-solutions.com

Here's an interesting item for keeping those vintage floppy's in order? Brian Instruments BRIKON Mdl 723 Floppy Drive Tester / Analyzer I saw a web site where these were about $900.00 http://www.mbiusa.com/Bucket/test1.html and this one is only at $5.00 with only about 1 and a half days to go. Brian Industries Brikon 723 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2519413979

23 years, 4 months

1
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Qbus artifact score!

by erd_6502＠yahoo.com

I was visiting a data-center-not-to-be-named and talked them out of an item on the scrap heap - a CompuServe Tri-Node - it's a rackable box, about 21" tall (twice as tall as an RX01, say), with *3* independent Qbuses inside. The only cards I got were some CompuServe-branded grant cards and one terminator each. I don't know how long ago it was gutted, but it's been sitting on a pallet for months. The front panel is in triplicate - three boot switches, three LTC switches and three run switches. It has three power switches on the back, and three watchdog boards inside. *Dual* boot?!? Nay! Three OSes in one! I should have enough PDP-11 boards to have an RT-11, a 2BSD, and some thing else, all in the same cabinet (external disks, naturally). I have plenty of LSI-11 and KDF-11 boards, but not KDJ-11, unfortunately. If only there was a DEC terminal with triple-session capability. Maybe I could rig up a video switcher and use three VT240 bases?!? (I know I can switch the RS-232 line, but that won't preserve screen contents of the other sessions) ... or perhaps three ports on a terminal server... The only thing missing is the back door skin. It was apparently removed some years ago, and none of the tri-nodes have them. Should be a bunch of fun getting this guy running! -ethan

23 years, 4 months

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Free Stuff ???

by mail.list＠analog-and-digital-solutions.com

Free Stuff ??? page info says date last modified ... Tuesday, May 04, 1999 9:32:15 PM GMT But it's currently indexed in Google, so who know? http://www.monmouth.com/~wstreett/equip.html Best Regards

23 years, 4 months

1
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AST Multifunction card manual

by swtpc6800＠attbi.com

I have a photo copy of the AST I/O Plus II card user's manual. It is a Serial Parallel, Clock and Game card. It is about 50 pages long and has schematics. I will mail it to any one who needs it. Michael Holley www.swtpc.com/mholley

23 years, 4 months

1
0
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paper tape questions

by akb+lists.cctech＠imap1.mirror.to

Hi-- I was wondering, is all blank papertape media interchangeable? I know that it can be made of paper or mylar, and that it comes fanfolded and on spools, but are there variations that would block interoperability, like varying widths? In particular, I'm wondering if any one can tell me if the tape offered up on ebay at http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2519056219&category=11805 will work in my friden flex-o-writer sps... (for that matter, if anyone here can help me find sps user and repair manuals, that'd be lovely... I'd like to know the pinouts on the i/o ports on the side, and I need to repair one of the carriage return straps...) --thanks in advance --akb

23 years, 4 months

5
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Need byte-splitter utility

by kyrrin＠bluefeathertech.com

Hi, gang, I've got a single EPROM file that I need to split into separate odd-byte/even-byte files for programming into two separate (smaller) EPROMs. I'm not able to figure out how to make the Unisite programmer do this, so I'm thinking a DOS or Windoze based splitting utility will do the trick. Here's the problem; I've searched all over Google, and can't find anything that'll work. Any ideas? Thanks much. -=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com "I'll get a life when someone demonstrates that it would be superior to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)

23 years, 4 months

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XT slots (was: RE: IBM 5161

by melamy＠earthlink.net

after checking in my IBM XT reference manual, the fact is that they added a buffer to the normal data and address bus and sent buffered these signals into J8. Also, they added a 14.318mhz oscillator on the expansion chassis side because they did not want pass this high of a frequency over the cable. This does mean that the manin 14mhz and the expansion chassis 14mhz are not in phase. The added buffers make the timning in slot 8 a littl emore tight because of the added delays through the additional chips. Slot 8 also had a requirement that it supply a card selected signal back to make sure the card was really ready to be accessed. The buffering from an engineering standpoint was done to increase the drive on the cable to the expansion chassis as well as help isolate the rest of the system bus from any added capacitance and noise from the outside world. best regards, Steve Thatcher >--- Original Message --- >From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> >To: cctalk(a)classiccmp.org >Date: 4/2/03 12:36:58 PM > > > >But in the XT, one slot is different. >> > Why? > >On Wed, 2 Apr 2003, Ethan Dicks wrote: >> decided it was easier to give away a serial card than deal with the >> customer-support issue of random 3rd-party cards not working in that >> slot. > >But "WHY?" >Did they leave off the buffer chip BECAUSE the serial card didn't need it? >Or did they use the serial card to cover up a MISTAKE? >Or did they have some OTHER plan for it, and used the serial card as a >"placeholder"?

23 years, 4 months

2
1
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IBM RS/6000: PS needed

by pat＠purdueriots.com

I managed to pick up a near-complete RS/6000 model 250 (7011-250) today, complete with ram, disk, framebuffer, sound card, and video capture card... A pretty neat thing to play with if it had a working power supply. Does anyone have a spare that they would be willing to part with? Thanks, Pat -- Purdue Universtiy ITAP/RCS Information Technology at Purdue Research Computing and Storage http://www-rcd.cc.purdue.edu

23 years, 4 months

1
0
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "Patrick Rigney" <patrick(a)evocative.com> > >> Hi >> Old dry grease is quite common on these old drives, as >> well as slight corrosion on the guide bars. You should >> be able to relube and get it running, without changing >> the stepper settings. >> As I recall, the H89's came with one of the snail track >> type positioners. The biggest problem would be the guides. >> Dwight > >Dwight, yes, the mechanism is very stiff, and I hope a little careful >lub'ing may restore its health. Now that I think about, though, I wasn't >very smart by trying as many diskettes as I did... hopefully I didn't >strain/burn/damage the stepper during my experimentation. Hi You don't have to worry about the stepper. These draw almost the same power if they are stalled or moving. Especially at the slow speeds used for a disk drive. Dwight > >This drive is worm gear rather than snail track. It's one of the drives >with the gigantic door that covers almost the entire face of the drive... >Siemens FDD100-5. I think this is the drive that's original to these >beasts, so I'd like to keep it alive if I can. > >Patrick

23 years, 4 months

1
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "Patrick Rigney" <patrick(a)evocative.com> > >> [Tony wrote:] >> Very odd... >> >> You might try checkking the index monostables on the hard sector >> controller (they only really do anything once per track, when the index >> hole between the sector holes comes round), but I can't see why it would >> then work for the first 4 cylinders. > >Well, as it turned out, the stepper motor on the drive was locking up. The >further towards the inner tracks it got, the more it struggled, and it >wasn't close to correctly centering over any track beyond the first few. >I'll mess with that later. I was able to replace the drive with a spare, >and I'm again up and running. I produced several good test boot disks, BUT, >I don't know how well that new drive is aligned, it's straight off the shelf >from the As-Is room at Wierd Stuff. Rotation speed is spot-on according to >the internal diag, but I don't have a 5.25" alignment disk to check it >otherwise. Anyone who receives a boot disk from me is, therefore, going to >be my "canary in the mine." :-) > >Next task... get the soft-sectored controller running. Unfortunately I have >no docs for this whatsoever, not even a schematic. I understand that it >requires MTR-90, and possibly a certain HDOS software distribution as well. >Does anyone know? > >Patrick > Hi Old dry grease is quite common on these old drives, as well as slight corrosion on the guide bars. You should be able to relube and get it running, without changing the stepper settings. As I recall, the H89's came with one of the snail track type positioners. The biggest problem would be the guides. Dwight

23 years, 4 months

2
1
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New Heathkit/Zenith Find

by jrkeys＠concentric.net

Today at a local computer shop I picked up Heathkit/Zenith Educational System ET-1000 Circuit Design Trainer. No manual for it but I have do checked online yet.

23 years, 4 months

2
1
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Need byte-splitter utility

by glenslick＠hotmail.com

What is the difference between odd/even and high/low? >As it turns out, it's not an odd-even split I need; It's high-byte/low-byte >split. _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail

23 years, 4 months

4
3
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Two ESDI drives available

by kelly＠catcorner.org

Well, I've made up my mind. Actually, I found a controller for these drives and have installed them in a computer I use to emulate the old Tandy's I collect. How's that... Emulating a 20 year old computer on a 10 year old computer with 15 year old hard drives. Now, on to the next question. I need a 34 conductor flat cable with male IDC on one end and socket on the other. Anyone know of a good source for these? Thanks, kelly -----Original Message----- From: Kelly Leavitt [mailto:CCTalk@catcorner.org] Sent: Thursday, March 27, 2003 6:29 PM To: 'cctalk(a)classiccmp.org' Subject: Two ESDI drives available I have two: Imprimis 94166-182 (150 MB) Maxtor XT-4170E (170MB) Any one need them? I collect mostly old Tandy stuff. Model II, 12, 16, 6000 is my main focus. Any interesting uses for these boat anchors? Thanks, Kelly

23 years, 4 months

3
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Victor Keyboard Identification

by thosmm＠yahoo.com

Rob, It's an enhanced keyboard from a Victor 9000 system. They were built in the early 80's and were pretty good machines. 80 track 5.25" disks held 1.6MB and ran CP/M-86 or MS-DOS. 800x400 graphics mode, although most were monochrome. You can also see them labeled as Sirius machines from time to time. Tom >>Hi All, > Can anyone help me identify what machine this >keyboard goes to: >http://idisk.mac.com/colourfull_creations/Public/victor.jpg >It's from Victor Business Products. It says Model 703 >on the bottom. It >also has a keyboard cable with an RJ-45 plug on it. >I just acquired it this weekend. I only have the >keyboard not the >machine. >Thanks >Rob ===== ---------------------- "I drank what?!" - Socrates Thomas Martin thosmm(a)yahoo.com

23 years, 4 months

2
1
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "Don Maslin" <donm(a)cts.com> > >On Tue, 1 Apr 2003, Dwight K. Elvey wrote: > >> Hi >> As I mentioned earlier, I have a Forth that runs standalone >> on hard sectored. Since it is standalone, I've used it to >> make exact copies of other disk. I've done things like changing >> the interleaving to make about a 10X improvement in load >> speeds for many programs. > >Is it available for download, Dwight? > > - don Hi Don Not yet but it could be. Since it is a standalone, I don't know how one could easily transfer it with HDOS. Still, I think I can come up with a simple serial to disk boot strap that would allow one to dump it from a PC onto the H89 disk, through the serial port of the H89. I've done this for several other processor ( like my Poly88 for tape images and my IMSAI to bring it back to life ). It has been a long time since I've looked at the disk EPROM's access methods. I'm sure I can figure it out and get something going. That way you could save the disk as an image file and all one would have to do is enter a small boot strap program from the monitor to get it going. I've always felt that this was the way you should be maintaining the library since it is simpler than sending media around the world. It does require that the machine in question have a code monitor or possibly a location to install a bootstrapping EPROM at worst. In any case, it would be good to get my Forth and the HDOS stuff I have transferred to something that can be easily distributed. Dwight > >> It has been a while since I had the machine running. I can >> fire it up and check what I have. The only issue I have for >> making copies for others is the media. I only have a few >> hard sectored disk. For some reason, I thought that disk >> formats would last at least as long as 33 lp records. I >> didn't realize at the time that media was being obsoleted >> as fast as it was produced. I know better now. >> Anyway, if I can get it all running, I'll make copies >> if someone supplies media. >> Dwight > ><snip>

23 years, 4 months

1
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Gernsback Publishing closing

by RCini＠congressfinancial.com

Hello, all: I just got my latest copy of Nuts & Volts last night and to my surprise, there's a note from Larry Steckler of Gernsback, the publisher of Radio-Electronics and Popular Electronics (merged into Poptronics). He says in the note that Gernsback Publishing is closing after 94 years and N&V will be fulfilling the balance of the subscriptions. I pass this on to the list with mixed emotions. For many years I subscribed to both R-E and PE but once I found Nuts & Volts, I did not renew either subscription. They strayed too far from the content I liked and N&V had some interesting regular columns -- Amateur Robotics and BASIC Stamps -- that more closely followed my interests. I had the same feeling when Byte, well, bought it, in 1995 -- a formerly great publishing that lost its way and its relevance to its core readership. Rich ========================== Richard A. Cini, Jr. First Vice President Congress Financial Corporation 1133 Avenue of the Americas 30th Floor New York, NY 10036 (212) 545-4402 (212) 840-6259 (facsimile)

23 years, 4 months

11
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software mentioned in March

by xtguy＠mindspring.com

Last month, someone mentioned some old software they had found in an old house. Listed among the items was a copy of Word Perfect 3.0 for DOS. I've been trying to find that for a while and if it's still available, I'd be interested. I'm also trying to find a copy of Word Perfect 2.0 for DOS, and a copy of Wordstar 2x for CP/M. Thanks. Kevin

23 years, 4 months

2
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Interupting RSX startup, (was:Ignoring Mount requests on startup in OpenVMS)

by fm.arnold＠gmx.net

cctech-request(a)classiccmp.org schrieb am 01.04.2003: From: "Don Mitchell" <runtime(a)wzrd.com> To: <cctech(a)classiccmp.org> Subject: Ignoring Mount requests on startup in OpenVMS Date: Tue, 1 Apr 2003 06:49:46 -0500 Reply-To: cctech(a)classiccmp.org >.... >Who remembers how you could interrupt an RSX startup and >then, with luck, >PIP your way out of trouble with files that shouldn't have >been there? > >Don Mitchell That's simple: type a ctrl/c a few times during the the startup-file output to get the explicit MCR> prompt. There you type "abo at." at. is the indirect task executes the startup.cmd file. If you'r luckey, you have now an open console that is also priviledged. If you're unluckey then a smart sysadmin may however have build some precautions into the startup.cmd file to prevent this to happen. Frank

23 years, 4 months

1
0
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Victor keyboard identification

by xtguy＠mindspring.com

I have a Victor 9000 (a.k.a. 'Sirius') with a keyboard that looks identical to that. (just joined the list a couple of days ago.) Kevin

23 years, 4 months

1
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Z-Star 433 VL info/parts

by jmaranon＠ing.unlp.edu.ar

Hello Ray: I've got one notebook like that you have. I think is difficult to run win95 in this machine, because it has 2 Mb RAM memory, but if you get about 10 Mb RAM more you can run win95. I haven't got the battery pack, maybe you can build one buying the adecuate batteries. But, now, I am asking something to you. Do you have the owner manual of the machine (better if you have an archive with this and the technical information)? The machine that I have is not working and I am looking for technical information. thanks, Julio

23 years, 4 months

1
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Looking for vaxft 410

by RAWagner＠tribune.com

The company I work for is looking to purchase a vaxft 410 and/or spare parts. We might be able to trade for PDP-11 parts PICS Vaxft 410 MODEL # 52XBA-AA-C05, Series BA22 BOARDS ------------------ T3999AA KFE52-AA KA550-AA 17-02194REV.A01 62351-000 MS520-BA MS520-BA T3999-AA Any help in locating a replacement box or parts would be appreciated. Thanks, Bob Wagner Systems Analyst Chicago Tribune rawagner(a)tribune.com

23 years, 4 months

1
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Epson HX-20

by Paul.Hills＠siemens.co.uk

Charlie, Your subject disagrees with the body, which would you like to buy, an HX-20 or an HX-40? I have three HX-20s. I only need one for my collection, so I'm willing to sell or swap two of them. I'm in Manchester in the UK. paul -----Original Message----- From: charles finnegan [mailto:finncr@msn.com] Sent: 01 April 2003 01:13 To: classiccmp(a)classiccmp.org Subject: Re: Epson HX-20 I would like to buy a EPSON HX-40. Who can help. I also need a printer cable. Charlie

23 years, 4 months

1
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Zebra Pick manuals

by cb＠mythtech.net

>If the pick box is small, I'd be interested if it's available. :) The Zebra machine is LONG gone. One of my first tasks at this company was to replace it, that was some 13 or sheesh, maybe 15 years ago. There were two of them I think, and I know I tossed them in the dumpster (this was before my collecting days when I just didn't know any better). The two PC's running pick: One was dismantled, the DigiBoards have been repacked and stored, and the hard drive has been put in storage (with Pick still installed). The rest of the PC I think is either in storage or has been stripped of parts (it honestly might still be standing on end next to my desk... I get so used to seeing things in my office that I think of them as furniture and forget all about them). The other is sitting in storage in one peice, in theory it could be booted tomorrow, but it has been offline for probably about 5 or 6 years now. I think it might have a broken DigiBoard in it as well. I seem to recall that a capacitor was snapped off one of the DigiBoards at one point. What I don't remember is if it was one being reboxed (makes sense) or if it was one that was left in the whole PC. I'm not at the point of getting rid of the whole one yet. It was saved in its runnable state because it has an old job on it that we wanted to be able to just drop back in place and run again if we wanted to. Although, at this point, even if the client DID restart the job, I suspect they would have enough changes to it to make it worth while rewriting it on a newer system. -chris <http://www.mythtech.net>

23 years, 4 months

2
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Zebra Pick manuals

by cb＠mythtech.net

>I'd be happy to scan these, and forward them on to the person who >has the Zebra system.. In the event that the lady that used to run our Pick stuff doesn't want them... then I think sending them to Al for scanning is probably the best long term idea. I actually had planned to scan them myself, but I just never got around to it (nor have I ever done a scanning project, so I don't know how hard it is). I do have two people that would like them, and I'll feel bad telling them they can't have them... but personally I would be happiest knowing they go and get scanned so that everyone can benifit from them. -chris <http://www.mythtech.net>

23 years, 4 months

1
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GenRad Future Data

by webmaster＠khssoftware.de

Hello, do you know what I have here ? I need technical infos like CPU, RAM, ROM and so on. I have one disk for this machine, but I can't read it. Therefore I need a short reference about the RDOS OS. A rare machine I think, because I can't find any information about the FutureData in the www. Sincerely, Wolfgang Kainz-Huber, Munich (Germany) www.computermuseum-muenchen.de [demime 1.01a removed an attachment of type image/jpeg which had a name of futuredata.jpg]

23 years, 4 months

3
2
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "Patrick Rigney" <patrick(a)evocative.com> >> According to my H89 manual, it takes 10 sector disks. I have had my H89 >> for a while, but I haven't been able to locate any software for it yet. >> I bought it at a hamfest and the person that sold it to me claims to have >> the software and that they will send it to me, but I'm not holding my >> breath... > >Tom, Tony, et al, > >Maybe I can be of some help to a few people here. I have a >recently-acquired soft sector controller and some other spare parts. I have >no idea if the soft sectored controller works, because I just got it and >have yet to plug it in. All of the software I do have is hard-sector >HDOS... no CP/M whatsoever. I thought I had it, but apparently I don't, >unless I missed a box. I have already contacted Don Maslin off list to >request a soft-sectored Magnolia CP/M boot disk, and check my thinking >here... it should be possible to create a bootable hard sector disk from the >bootable soft sectored one by installing both controllers. Unless I'm >missing something, that seems like a no-brainer. If that is in fact >possible, I will be happy to share the benefits of that (small) labor with >those in need. Hi You do know that there is a hardware modification needed to run CP/M? As far as I know, this makes it so that it doesn't run HDOS. I could be wrong though, it has been a while since I looked at this issue. You should also try to get a copy of the listing for the hard sectored controller as well. I may have a copy of this someplace ( it was published by HeathKit ). I think the soft sectored code was also published. > >One unfortunate rub since my earlier discussion in this thread with Tony... >last night I pulled my reference machine out of storage and powered it up, >and it almost boots. Almost. A working machine went into storage six >months ago, but what has emerged seems to take a (hard sector) disk read >error on every modulo-10 numbered sector starting at 40 (that's sector, not >track), with any diskette I use. No problem with any other sectors, just >40, 50, 60, etc. I have to diag and solve this problem first, obviously. >Disk rotation speed is good (between 177 and 200), so any pointers any of >you may have may help me save time dinking around. I have both spare drives >and controllers, but all are in unknown states at this point. Timing wise, >once that's fixed, I will need to have received the disk from Don, and see >if the soft-sectored controller is working at all, and diagnose THAT if not. >And THEN we'll be in business. Check to see that none of the rubber from the drive belt is sticking on the flywheel or drive pully. Check with your finger to make sure both surfaces are very smooth. Even a tiny bump will cause read errors. As I recall, these came as single sided so you also need to check the pad on the head load. Dwight > >For those of you who would like either the bootable HDOS (hard sector) or >the bootable CP/M (hard sector) when this gets sorted out, please reply to >me OFF LIST. I'm hoping the hard sector drive problem is trivial. I also >found a bootable/standalone HDOS diskette with a comm program on it, so >those that don't specifically need CP/M could use this, if you like. > >Ideas on the disk issue? > >Patrick

23 years, 4 months

2
1
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Zebra Pick manuals

by aek＠spies.com

> Does anyone want them before they are tossed in the garbage? Instead of tossing in the garbage you might consider sending them to Al Kossow for scanning. -- I'd be happy to scan these, and forward them on to the person who has the Zebra system..

23 years, 4 months

1
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Zebra Pick manuals

by cb＠mythtech.net

>I have the following (I guess I should have done this before, but I was >too lazy): Ugh... these bloddy manuals are cursed. I am destined to never be rid of them. I have to retract my offer on these manuals for the time being. I was just told that the lady that used to handle our Zebra has expressed interest in taking the manuals. I haven't spoken to her directly yet (I've been told 3rd party by someone else here that still talks to her). But until I know what is going on with giving them to her or not, I don't want to promise them off to anyone else. I have to at least give her first dibs on them since the Pick stuff really was her baby. (the Zebra first, and then later the Pick OS on two PC clones we had, although at least I dabbled a bit in the Pick/PC setups). -chris <http://www.mythtech.net>

23 years, 4 months

2
1
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Gernsback Publishing closing

by healyzh＠aracnet.com

> And thusly Zane H. Healy spake: > > > > >P.S. The place I have found with the *most* selection of magazines is the > > >World's Biggest Bookstore in downtown Toronto. > > > > If some place can beat Powells Books, then how big are they? Powells Books > > takes up an entire city block, is multi-story for a good chunk of that > > block. They don't even stock technical books in the main store, for that > > you've got to go a couple blocks away and the Technical Bookstore is has > > more books than most normal bookstores! Plus they've got so many books > > that they had to open another LARGE store about 20 minutes away, and then > > finally get at least one warehouse. They've been one of Amazon's major > > suppliers from Amazon's start. > > > > When it originally came into being, there were no other book stores (that I > knew of) like it. Nowadays the Chapters and B&N's are about the same size. Then the main Powells has them beat without even trying. Shoot, Powells Technical is almost that big :^) Zane

23 years, 4 months

1
0
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Zebra Pick manuals

by cb＠mythtech.net

I've got two binders of manuals for the General Automation Zebra Pick system. Does anyone want them before they are tossed in the garbage? -chris <http://www.mythtech.net>

23 years, 4 months

3
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Zebra Pick manuals

by cb＠mythtech.net

>Do your manuals include the Zebra MC68020 executive firmware manual, or the >OMTI controller docs? I have the following (I guess I should have done this before, but I was too lazy): Accu-Plot Operator Guide Zebra/Pick graphics system Compu-Sheet operator guide for financial planning Pick Jet word processor guide Runoff reference manual Pick Spooler reference manual Proc reference manual Pick Basic reference manual Zebra 2500 Installation Guide Zebra Models 2500 and 3500 Cipher 1/2" Tape Unit Installation Guide Overview of the Pick Operating System Introduction to Pick TCL and file structures Pick operator guide Pick utilities guide Access reference manual Editor reference manual So in answer to your question... no, I don't have either of the manuals you are looking for. -chris <http://www.mythtech.net>

23 years, 4 months

1
0
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H89 CP/M hard-secored boot diskette

by dwightk.elvey＠amd.com

>From: "ben franchuk" <bfranchuk(a)jetnet.ab.ca> > >Dwight K. Elvey wrote: > >> It has been a while since I had the machine running. I can >> fire it up and check what I have. The only issue I have for >> making copies for others is the media. I only have a few >> hard sectored disk. For some reason, I thought that disk >> formats would last at least as long as 33 lp records. I >> didn't realize at the time that media was being obsoleted >> as fast as it was produced. I know better now. > >The funny thing some small record companies still produce >records.You can still get records, but not the crappy $7.95 k-tell >stuff, but higher priced and higher quality audio.A good >record changer and other assorted parts ( like a clean record) >is better music wise than any CD. > >Can a regular disk be punched to make hard sectored disc? >Ben. > Hi Ben Yes, one can take normal disk and punch them. They do need to be accurately done. I've been looking at setting up an index wheel to do just this. I have need for doing it on 5-1/4 and 8 inch so it is an interesting problem. One of my 8 inch applications has index holes on the outer diameter of the disk. Dwight

23 years, 4 months

1
0
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Any UK list members?

by mross666＠hotmail.com

>If anyone on here is from the UK, they might want to take a look at > >http://computerhardwareneeded.cjb.net and read this guys story I'm a Brit in the USA. Most of us are friendly helpful folks. Most of of us become unfriendly when directed to a website that tries to install Gator spyware on our machines, like you just did... Mike http://www.corestore.org _________________________________________________________________

23 years, 4 months

6
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Cool finds!

by rigdonj＠cfl.rr.com

Stopped by one of my better scrounging places yesterday. I left with a new PC CMOS RAM card. This card has on-board battery backup, utilities in on-board ROM, write protection ability, and can be used as a solid state RAM drive and you can even boot from it. Also got the manual with it :-) Other goodies include two of the MS-DOS co-processor cards for the HP 9000 series 200 and 300 computers. I don't need to run MS-DOS on the 9000s but this card is required before you can use the HP 9127 drives to read and write MS-DOS formatted disks. I've got a heap of 9127s so the cards are very welcome. Anybody have docs or SW for these? I'm not sure if SW is required to use them to read/write MS-DOS disks or not. Also found a NICE little 5 slot VME chasssis made by Performance Technologies. It has two cards in it but I haven't checked it out yet to see what they are. Also found a nice counting scale with a remote scale. Also a big pile of Endevco Charge Amplifiers. Parts of a HP VXI chassis. Also found a 19" rack with a Recognition Concepts Inc Trapix 2d system. The odd thing about it is that the cards appear to be exactly the same size and connector layout as DEC Hex-bus cards! In the same chassis was a rackmount PC. It was connected to the RCI system by several LARGE ribbon cables and appears to be the I/O and storage system for the system. I didn't see much use for the RCI system so I left it but I grabbed the rack mount PC and a second loose rack mount PC that seems to be a spare. Joe

23 years, 4 months

1
0
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H89 as serial terminal

by dwightk.elvey＠amd.com

>From: "Patrick Rigney" <patrick(a)evocative.com> > >> The hardware solution is to disconnect the internal serial cable from the >> termianl logic PCB (the rearmost vertical PCB in the machine) and replace >> it with one of the cables that goes to a DB25 connector on the back >> (these cables are normally connected to the serial port PCB plugged into >> the computer mainboard, just in front of the terminal logic PCB). The >> cables have a Molex 0.1" pitch SIL connector on the end, and fortunately, >> the pinout of all the internal serial connectors (terminal logic PCB, >> computer 'console port', serial port PCB) is the same. > >Ouch... > >> The software solution is to write a little program that transfers >> characters between the computer's console port and one of the other >> serial ports. This will then make the computer section appear as a >> transparent link between the terminal and the outside world. > >much easier than any of the above... get a copy of MDM712 or similar >terminal emulation program. MDM712 comes with a serial port driver for >H8/89. Plug your device into the spare serial port on the back of the >(unopened) machine, and that should do it. Some '89's have three-port >serial cards... I don't know which ends up being which or whether MDM712 >lets you choose, all of my '89's are down right now. :-/ > >Patrick > Hi Why would you assume that finding and installing some software would be easier than making up a simple molex adapter connector. As I recall, it was a 9 pin molex but I could be wrong. That is all of 9 wires to deal with. Dwight

23 years, 4 months

8
7
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Ignoring Mount requests on startup in OpenVMS

by runtime＠wzrd.com

This might work, if you can get at EDT in the state before SYSTARTUP_VMS executes. I haven't tried it to see if you can. http://h71000.www7.hp.com/wizard/faq/vmsfaq_004.html Who remembers how you could interrupt an RSX startup and then, with luck, PIP your way out of trouble with files that shouldn't have been there? Don Mitchell

23 years, 4 months

1
0
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DEC drives

by t.ellis＠talk21.com

If anyone is interested I have just broken down a VAX and pulled all the boards out and the 2 digital RF35/RZ35 HDD

23 years, 4 months

1
0
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AXP 7000 startup, now doing OSF/1

by gunther＠aurora.regenstrief.org

Hi, I have installed OSF/1 on the AXP 7000 and it's working. Quite a bit more snappy than the VAX6460. Man, I have no room for this machine left and now I love it so much! I'd give you login account (over my dialup IP) just the problem I am having is that after I built the custom kernel it still won't let any user other than root login. It says "too many users logged in alread, try again later". And that with zero users logged in at the time. Can you think of any file I might be overlooking? I can only think of /etc/nologin or something. My maxusers is at 32 in the kernel configuration. I can't think why this would not be correct in the kernel. regards, -Gunther

23 years, 4 months

2
1
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Looking for....RL02 controller for PDP-8E M8433?

by pete＠dunnington.u-net.com

On Mar 28, 9:47, Jay West wrote: > I've heard these really aren't to be found anywhere, but thought I'd check > with the list. > > I'd like to get a disk subsystem on my PDP-8E. I've pretty much given up > that I'll ever find an RK05 drive and controller for it, so I'm now looking > to hook up an existing RL02 drive to it. I think this is done via the M8433? If you have an 8/E, I'm afraid an M8433 won't be any use to you, because it's an RL8A, which is a hex board, not a quad one. It's meant for a PDP-8/A. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

8
16
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Epson HX-20

by finncr＠msn.com

I would like to buy a EPSON HX-40. Who can help. I also need a printer cable. Charlie

23 years, 4 months

1
0
0 0

hp-85A & 128K mem module question

by vp＠mcs.drexel.edu

Innfogra(a)aol.com wrote: > Does anyone know what command or process you would use on a HP-85A to verify > that the 128K Memory Module that plugs into the back of The HP is working. The Instruction sheet for the HP 82907A (32K), HP 82908A (64K) and HP 82909A (128K) Menory Modules states: "The HP 82907A, HP 82908A, and the HP 82909A Memory Modules cannot be used with the HP-83 and HP-85 Personal Computers." The note obviously refers to the HP-85A, since the HP-85B *can* utilize these modules as RAMDISCs. So you need either an HP-85B, an HP-86, or an HP-87 to use your 128Kb module. > I seem to remember that the 85A needs a ROM to use a 128K Memory Module. You may be thinking of the 00087-15012 Electronic Disk (EDISC) ROM which allows memory to be used as RAMDISC. This ROM is built into the HP-85B while it is optional for the HP-86/87. Sorry. **vp

23 years, 4 months

1
0
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25F8398

by dion＠technologyexpress.com.au

It comes from an IBM 3174 Controller. Regards, Dion Nowoweiski c/- Technology Express 39-45 Johnston Street Port Melbourne VIC 3207 Ph: (03) 9646-9933 Fax: (03) 9646-9922 Mob: 0412-450-950 ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. **********************************************************************

23 years, 4 months

1
0
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Help sought on early IBM hard drive R&D

by menadeau＠attbi.com

Can anyone answer her question? She is particularly interested in the years 1957-1962 when Building 014 was being built and then opened. ----- Original Message ----- From: <bbamburg(a)pacbell.net> To: <letter(a)classictechpub.com> Sent: Saturday, March 29, 2003 5:29 PM Subject: Question > I found the Classic Tech Publication website with many interesting > articles. I am preparing a historical and architectural evaluation of > the Advanced Research Building 025 on the IBM Cottle Road Campus as > part of an EIR for the site. The majority of the campus was included in > the sale of the IBM Hard Disk Drive Unit to Hitachi, however this > building was excluded. It is proposed for demolition and the site to be > redeveloped. The building has architectural significance as one of the > finest examples of the Modern Industrial style (1940-1985) in San Jose. > The question that has not been adequately answered is what research or > prototype occurred in this building. It is suggested that the flying > head research was done in this building. The building was designed for > Reynold Johnson's design team which moved from 99 Almaden in San Jose. > Can you direct me to information that would identify the research > conducted in this building? > Thank you for any assistance you can provide. > Bonnie Bamburg > Michael Nadeau Editor/Publisher Classic Tech, the Vintage Computing Resource www.classictechpub.com

23 years, 4 months

3
2
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8/L repairs

by charlesmorris＠direcway.com

On Fri, 28 Mar 2003 12:58:47 -0600, you wrote: >A) What rev M706 card do you have? Rev. K. That's one reason it took me a while to find, since the only schematics available seem to be the first revision (A?) >B) Would you write up where you attached your pullups? Check the schematic, it was on the preset lines to the 7474 containing stop bit 1 and stop bit 2... >Are you using a microprocessor on your DF32x4? FPGAs? PALs? TTL? Plain old 74LS and a Dallas Semi DS1258 128kx16 NVRAM. >How are you handling the cabling issue? Cables :) (I also laid out a PCB to plug in the backplane and accept a standard 40 pin IDC header connector). Had five fabricated and made 3 foot ribbon cables. > Do you have a way to load >the emulated disk devices "out of band"? (i.e., can you get data into >it in any way other than the databreak interface to the -8?) No, I took the DF32 manual and copied the specs as closely as possible. The 8/L should "think" it has a real DF32 and three expansion DS32's attached. > >> [demime 1.01a removed an attachment of type image/jpeg which had a name >> of mvc-457e.jpg] > >What's the picture of? > >-ethan Pic is of the DF32x4 on the workbench. I'll send you a copy direct. -Charles

23 years, 4 months

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Hacking an RS-170 tap into a B&W TV set?

by erd_6502＠yahoo.com

Tony (and others ;-), How does one go about looking for the right place to install an NTSC video input jack into a B&W TV without schematics? I have the "Cheap Video Cookbook" which describes the technique, but I'm trying to do this to a $20 K-Mart 4" B&W TV set (Spectra Model 52-BWR). Among other appeals, it's battery/auto/AC powered and should work great with, say, an 1802 with an 1861 (Elf, VIP, et al). Good portable demo set for low-res graphics. If it helps, the largest IC appears to be marked as follows... CD5151CP EP3 II DE028 Thanks. -ethan

23 years, 4 months

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H89/H19 keycaps?

by erd_6502＠yahoo.com

With all the discussion of Heath terminals, I am reminded to ask if anyone has any keytops? My H-19 came to me with one key missing (and a piece of paper stuffed betweent the contacts!) It's one of the keys on the corner of the keyboard (probably got whacked by my former boss), not one of the letter keys, but at this point, I'd be happy to get *anything* to replace it, no matter what the legend. Does anyone have a dead H-19/H89 keyboard they could spare a keytop from? Write off-list if you do. Thanks, -ethan

23 years, 4 months

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Looking for Arche Technologies Computer, iRiS anti-virus software ($$$)

by vcf＠siconic.com

I have a new bounty. I'm looking for two things which are somewhat related. First, an Arche Technologies PC-compatible system. This was a typical 286 clone from the 1987-1989 timeframe. Second, iRiS antivirus software. This may have also went under the names of "Virus-Free", "Antivirus" and "Antivirus Plus" (sometimes in combination with the company name "IRIS"). The software was distributed by Iris and the software apparently written by Computers of Israel. The iRiS software was included in the system software that came with the Arche computer. It is the software that I am really after but the computer also has some use. There is a bounty for these items. If you have them, contact me directly at <sellam(a)vintage.org> and we can negotiate a fair price. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

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H89 as serial terminal

by dwightk.elvey＠amd.com

Hi I have a stand alone Forth ( FIG ) that I did years ago when I first got my H89. It runs on the hard sectored disk. I don't have any C for this machine but I do also have the BASIC in HDOS. On the hardware methods, one could run both connectors, >from the terminal and CPU board to the back and make a short external jumper cable to change it back to a computer. This would allow one to use it either way. The only thing one might want to open the cover for is to set the baud rates for correct use as the computer or terminal. Dwight >From: "Jason J. Gullickson" <mr(a)jasongullickson.com> > >Hey guys, thanks for all the info. > >I would prefer to go the software route (I'd prefer to run CPM and find >a C compiler...) but I'm having a hell of a time tracking down disks for >this thing so in the meantime I'm looking for a hardware hack to make it >useful (or at least make it do something to freak out my fellow >employees as my syslogs scroll across the screen of this beast), so the >hardware solution is what I was looking for (I could have been more >specific). > >On that note, if any of you know where I could find a copy of CPM and a >compatible C compiler on hard-sectored disks, that would be greeeaaat, >yeah. > >Thanks again! > > > >-----Original Message----- >From: cctech-admin(a)classiccmp.org [mailto:cctech-admin@classiccmp.org] >On Behalf Of Patrick Rigney >Sent: Friday, March 28, 2003 1:02 AM >To: cctalk(a)classiccmp.org >Subject: RE: H89 as serial terminal > > >> >much easier than any of the above... get a copy of MDM712 or similar >> >terminal emulation program. MDM712 comes with a serial port driver >> >for >> >> Hi >> Why would you assume that finding and installing some software would >> be easier than making up a simple molex adapter connector. As I >> recall, it was a 9 pin molex but I could be wrong. That is all of 9 >> wires to deal with. Dwight >> > >Dwight, you're absolutly right, the software is not always "easy" to >find and get. Actually, check that... it's really easy to find and get >(Google), it's just not as easy to get onto a Heath-format floppy so you >can use it. > >On the other hand, I think the software approach has its merits, >especially over the long haul. Using a terminal emulator is a more >permanent solution >(IMHO) than cracking the case and swapping connectors around to >reconfigure the device as a terminal or computer. And, the terminal >logic board communicates with the CPU board at 9600 baud, so if you want >a different rate for the device you are talking to, the board has to be >pulled and jumpers/switches changed, and then pulled and changed back if >you want to use it as a computer again. The three-port serial card has >software configurable baud rates. The hardware approach will also not >make it emulate VT-100, which is part of what Jason had asked. And >since many of these programs can X/Y/Zmodem, getting other stuff onto >the machine from there forward gets a lot simpler. > >While you, I, and others may feel quite comfortable mucking around with >the innards of the beast, perhaps (and I don't know one way or another >for sure) Jason or anyone else who might later read this thread in >archives or digests may be less comfortable or is just working up to it, >and so other alternatives are worth mentioning (IMHO). Tony's hardware >solution is good, but rerouting even one of those cables may require >removal of the CPU and terminal logic boards, since the interconnect and >serial cables are typically routed around the bottom edge of the two >boards and fairly tight once home. If you're going to go back and forth >between terminal and computer, maybe that's a bit much in the long run. >Add to this that the expansion boards and some of the other connectors >attached the CPU board are all unkeyed and thus notoriously easy to >(re)install one pin off their mating connectors, and this little >accident can cause the kind of rapid deep frying on the CPU board that >will turn a wonderful H89 into a dumb terminal permanently. > >I'm into risk management and choices. That's all. I certainly didn't >intend any offense with my comment. > >But since we're into options... to elaborate on your and Tony's path, >the terminal logic board's serial port is easily accessed from the rear >of the machine--remove the lid, and as you face the back of the machine, >it's on your left (you can sometimes read "P404" next to it). If a >cable is the solution of choice, then Molex directly to a DB-9 or DB-25 >(whatever the device to be connected requires) is the way to go, IMHO. >That way, you can just open the case, pull the interconnect, connect in >its place this new cable to the target device, and do your thing. >Reverse to undo, lather-rinse-repeat as needed. That won't get you >VT-100, software transfer, or other baud rates, but it is quick and >dirty. > >To that end, P404 on the terminal logic board is a 15-pin connector with >10 pins connected. For those interested, the pinouts are (from >schematic w/no revision number evident, identified Heath p/n >595-2268/595-2272): > >1 - (black) ground >2 - no connection >3 - (brown) TxD >4 - n/c >5 - (red) RxD >6 - n/c >7 - (orange) RTS >8 - n/c >9 - (yellow) CTS >10 - n/c >11 - (green) DSR >12 - n/c >13 - (blue) ground >14 - (violet) DTR >15 - (grey) "RLSD/" (whazzat? anybody?) > >The black wire (pin 1) is up in this vertical connector. > >Patrick

23 years, 4 months

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Ignoring Mount requests on startup in OpenVMS

by jwb＠paravolve.net

I have a VAX running VMS 7.1 that is looking for a volume thats not actually in existence anymore. It does this during startup and doesn't give up... Being a VMS newbie and all, how would I tell the system to ignore this and continue /w the boot? for example.... %%%%%%%%%%% OPCOM 30-MAR-2003 21:28:59.95 %%%%%%%%%%% Request 1, from user SYSTEM on ODIF01 Please mount volume USER2 in device _$1$DKB100: (ODIF01) -jwb -- ## James W. Brinkerhoff <jwb(a)paravolve.net> ## ## GPG Key Sig: EBF1 6C24 0814 A3E9 6E93 649C 1F25 D807 E484 C9B9 [demime 1.01a removed an attachment of type application/pgp-signature]

23 years, 4 months

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Anyone looking for DH-11 parts?

by erd_6502＠yahoo.com

Looks like most of a DH-11 board set plus one or two other things. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3410022172&category=1247 No affiliation with the seller (except as a one-time customer with the goods currently in transit). -ethan

23 years, 4 months

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What is this? eBay #3409766995

by Paul.Hills＠siemens.co.uk

Yes, definitely an MST-80. There's a (very basic) page dedicated to this machine here: http://online.sfsu.edu/~hl/c.livermore.html, you can see from that picture that it is the same type of board (although the keypad is a different colour). The web page says the processor is an RCA 1802, others have mentioned an 8080. paul -----Original Message----- From: Robert Borsuk [mailto:rborsuk@colourfull.com] Sent: 28 March 2003 18:02 To: cctalk(a)classiccmp.org Subject: Re: What is this? eBay #3409766995 Is it an MST-80b? On Friday, March 28, 2003, at 12:32 PM, acme(a)ao.net wrote: > Described as "One of the first portable computers ever made," hex > keypad, > the word "Eclipse" on side of unit, fits in a briefcase, seller claims > it > was made for Lawrence Livermore Labs. > > Any ideas? > > Glen > 0/0 > > Robert Borsuk - rborsuk(a)colourfull.com President Colourfull Creations http://www.colourfull.com

23 years, 4 months

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8080 disassembler

by glenslick＠hotmail.com

What features do you want or need in an 8080 disassebler that you haven't been able to find? I recently went looking for 8085 disassemblers for the monitor ROM in an HP 5036A microprocessor trainer. I didn't like much of what I found either and I ended up just writing my own. It really wasn't that difficult and had the benefit of being able to exactly control the listing format as I wanted. >Does anyone have a good DOS or Windows based 8080 disassembler that they >would recommend? I tried Googling but what I found wasn't up to the >task. _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus

23 years, 4 months

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8080 disassembler

by classiccmp＠vintage-computer.com

Does anyone have a good DOS or Windows based 8080 disassembler that they would recommend? I tried Googling but what I found wasn't up to the task. I've got a hex dump of a boot PROM that I want to take a look at. Erik Klein www.vintage-computer.com <http://www.vintage-computer.com/>

23 years, 4 months

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dbit E11 and rtv53_rl.dsk

by rhudson＠cnonline.net

I have a machine dedicated to DOS, and I have found that dbit's pdp11 emulator works under DOS (I wish sim worked under DOS) Is there any way to get RSTS or any other pdp11 os running in this environment? Anyone know what rtv53_rl.dsk is? I think it's a RL disk image of version 5.3 of uh I used to remember. Is RT a pdp11 OS? if so anyone know how to get this running? Thanks!

23 years, 4 months

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