test-drb May 2019

test-drb@ccmp.vtda.org

149 participants
165 discussions

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

should? say ?Francion Yamamotto? ?not ?Yrancion Yamamotto? In a message dated 5/20/2019 10:07:04 AM US Mountain Standard Time, couryhouse at aol.com writes: Since? we? have? nice? microscopes at? the museum? project? we? were? hired? to? photo? some IC? innards? years? back. This? ended? up? becoming? a minor obsession? for? a short? time? as? the? artwork under? various? illuminations? is? fantastic.?? One of the things? that? seemed? to show the mots? difference in? detail between layers and highs? etc... was? differential? interference contrast? (after? nomorski (sp?) ( this? was on our? Ziess Ultraphot? and? seems? to be? a Zeiss? only? ? offering.0? ?on? the? Japanese? side of? things? Nikon? had? ?Yrancion Yamamotto (sp?)? method? which? seems? ?nice? ? but? I? preferred? the? ?Nomeriski. Using? these? ?methods? you? may be? able? to extract? more usable? detail? ?than? with traditional methods.? ?and? wow? the? color? photos? are? ?frame-able! But? ?kinda? what? I? wanted to mention? to is? depending? on? what? era? ?the chips? were? the? over? coatings? ? seemed? to? worsen? the view? the newer the chip? or? so? I? thought at the? time. Such? great? ?fun? to? photo? ?the? little? ic innards!? ?even? a? standard? ?illum.? ?scope? with the? vertical? episcopic? illumination? gives? ?some? ? fun? photos? too,? especially? on the? earlier? ?chips. Don't? know? if? any? of? ?this? will help on the? HP-01? roms? but? sure? was? fun to talk about? again ed sharpe archivist for? smecc In a message dated 5/20/2019 9:00:09 AM US Mountain Standard Time, spacewar at gmail.com writes: Only just within the last month I finally obtained a ROM dump from a production HP-01, for potential use in my Nonpareil simulator. Previously I only had the preproduction code listed in a US patent. I'm not sure when I'll have time to actually work on the simulation, though. My original plan had been to crack open an HP-01 module and try to read the ROM bits optically, as Peter Monta did for the HP-35. However, that didn't work, probably due to a passivation coating on the ROM dies.

5 years, 7 months

Pleas ID this IBM system....

by jos.dreesen＠greenmail.ch

The seller clearly has no idea, but the starting price is right ! https://www.ebay.de/itm/seltene-Anlage-Puma-Computer-IBM-2020/202646831828?… Jos

5 years, 7 months

Looking for my old ADM-3A

by charlesmorris800＠centurytel.net

I used to have an ADM-3A Dumb Terminal... fixed it up, and made my own lower-case ROM from a 2716 EPROM and a lot of small wires. Sold it around 2005 or so, but can't remember who bought it. Anyway I'd like to buy it back if the current owner is out there and isn't using it :) Thanks Charles --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

5 years, 7 months

M7264 Troubleshooting

by jnc＠mercury.lcs.mit.edu

> From: Mister PDP > After a day of confusing and mixed up signals (I don't really use > this type of equipment very often) .. I switched over to the > oscilloscope Don't feel bad, I too prefer to rely on an oscilloscope by default; not only does it let you see what's really happening (intermediate voltages, noise, etc) but it's simpler, and there are less ways to get incorrent info. > to confirm that the four clock signals on the MCP-1600 chipset were > working properly .. and was able to see that the very basics of the > CPU were working. It's not necessarily good if the 4 clocks (I take it that's what the latter refers to) are working, because if one or more of those were broken, it's a relatively easy/simple fix, whereas if they are working, and the CPU's still not running, it could be a failed CPU chip, and the only fix there is to replace it. > the SRUN signal coming off of the backplane. Note that SRUN isn't crucial to the machine's operation, it's just user info. If SRUN is somehow broken on it's own (i.e. failed component somewhere between where the CPU generates it, and the display LED) finding and fixing that issue won't help. Far more useful, in terms of getting the thing running, would be to know if BSYNC on the QBUS is hopping around (as ODT tries to talk to the console - an easy thing to check into, too). If not, that's a show-stopper that needs to be looked into. > From: Glen Slick > the SRUN L signal is driven on to the backplane bus line AF1. The '78-'78 "microcomputer processors" says (pg. 3-15) that on the LSI-11 it's also on CH1; just to complete the complexity, it also says (pg. 3-32) that on the LSI-11/2 it's also on AH1! > From: Mister PDP > I hooked the oscilloscope up to SRUN off of E68, and found that it > oscillates low at 58.68KHz. .. Hitting the Run/Halt switch does not > have any effect on the period or amplitude of the oscillation. So maybe the CPU is actually running after all? Although turning RUN/HALT to 'HALT' should stop it - the Run light would I think go out when ODT is running. (It certainly does on the /23.) Can you check that BHALT on the QBUS is actually asserted (i.e. 0V) when the switch is in HALT? Noel

5 years, 7 months

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

Since? we? have? nice? microscopes at? the museum? project? we? were? hired? to? photo? some IC? innards? years? back. This? ended? up? becoming? a minor obsession? for? a short? time? as? the? artwork under? various? illuminations? is? fantastic.?? One of the things? that? seemed? to show the mots? difference in? detail between layers and highs? etc... was? differential? interference contrast? (after? nomorski (sp?) ( this? was on our? Ziess Ultraphot? and? seems? to be? a Zeiss? only? ? offering.0? ?on? the? Japanese? side of? things? Nikon? had? ?Yrancion Yamamotto (sp?)? method? which? seems? ?nice? ? but? I? preferred? the? ?Nomeriski. Using? these? ?methods? you? may be? able? to extract? more usable? detail? ?than? with traditional methods.? ?and? wow? the? color? photos? are? ?frame-able! But? ?kinda? what? I? wanted to mention? to is? depending? on? what? era? ?the chips? were? the? over? coatings? ? seemed? to? worsen? the view? the newer the chip? or? so? I? thought at the? time. Such? great? ?fun? to? photo? ?the? little? ic innards!? ?even? a? standard? ?illum.? ?scope? with the? vertical? episcopic? illumination? gives? ?some? ? fun? photos? too,? especially? on the? earlier? ?chips. Don't? know? if? any? of? ?this? will help on the? HP-01? roms? but? sure? was? fun to talk about? again ed sharpe archivist for? smecc In a message dated 5/20/2019 9:00:09 AM US Mountain Standard Time, spacewar at gmail.com writes: Only just within the last month I finally obtained a ROM dump from a production HP-01, for potential use in my Nonpareil simulator. Previously I only had the preproduction code listed in a US patent. I'm not sure when I'll have time to actually work on the simulation, though. My original plan had been to crack open an HP-01 module and try to read the ROM bits optically, as Peter Monta did for the HP-35. However, that didn't work, probably due to a passivation coating on the ROM dies.

5 years, 8 months

M7264 Troubleshooting

by vintagecomputersmn＠gmail.com

This is a continuation of my post from about a week and a half ago. The weekend I had some free time, so I returned, armed with a oscilloscope and logic analyzer, to try and figure out what is wrong with my H11A. At first, I tried to use the logic analyzer to confirm that the four clock signals on the MCP-1600 chipset were working properly. After a day of confusing and mixed up signals (I don't really use this type of equipment very often), I realized that my logic analyzer was picking up the signals incorrectly. I switched over to the oscilloscope and was able to see that the very basics of the CPU were working. After that, I decided to try and find out why the Run/Halt light was not coming on when I hit the switch. Looking at the H11 schematics, the light relies on the SRUN signal coming off of the backplane. The problem I am currently facing is I cannot find where the CPU board generates the SRUN signal. If anyone who is more experienced that me knows how the M7264 generates the SRUN signal, that would be wonderful. Thank You, Gavin

5 years, 8 months

VT420 terminal screen

by petermallan＠gmail.com

I have a DEC VT420 terminal which works pretty well. However, I am concerned that sometimes the characters on the screen seem to get torn sideways and jump around a little on a timescale of less than one second. My guess is that there is some issue with the power supply, but that is just a guess. Does anyone have any experience of this and know what I should look at in order to fix it. If it never gets worse, I can live with it, but I fear that one day it will just die. Cheers Peter Allan

5 years, 8 months

Tape seals?

by tshoppa＠wmata.com

Just a reminder: "Tape seal" is a generic name (or defunct trademark?) for the wrap-around plastic tape hanger for half-inch magtape reels. There's a flexible white (soft plastic) or beige (hard plastic) belt with a clamp (sometimes black) and a hanger. They usually had a little place to put a label in them too. They usually came with a new reel of tape but you could also buy them by themselves. 20 years ago I had thousands of 9-tracks hanging from decaying tape seals. Every couple days I would find a couple of tapes dropped to the floor and their tape seal broken. At the time it was no problem to find surplus tapes with recent tape seals to rehang them, and tape seals were still available new. Most of mine came from Southern California where I think the ozone in the atmosphere severely limited useful life of the plastics. Here in 2019 I only have a few dozen tapes and few remaining tape seals. I suspect any source I found of tape seals would be selling 20-year old tape seals. Is there any outfit that sells "new tape seals"? Or a preferred better way to hang tapes in 2019? It wouldn't surprise me if an archivist told me hanging tapes was the wrong way to store them but I never have really noticed (temperature/humidity changes seem to be a way bigger problem than storage orientation). P.S. Yes all these tapes were imaged decades ago. Not really sure why I still have them around unless say I need to boot a PDP-11 or VAX OS from 9-track which I guess hasn't happened in at least a decade for me. Tim N3QE

5 years, 8 months

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

at the? time,? the hp-01 was? discontinued? when i? became a? dealer.? for the? calc/ hppc? ?line.? ? one? is? well? worn? and? ?could? ?be? ?sold/traded? ? the other? ?i? got? as? new? condition? and just? ?wore? to? hp 3000? conferences? etc.? and? will remain? with the museum... Yea? might? ?be? ?fun? to look? for? some of those other? ones? ?you? mention... but the HP? ?one is? ? our? main? ? thing? we? cluster? ad? materials and go withs? around. We? ?do? have a? ?few? ?extra? go withs? and? adverts? etc. to off? at? some? point and? yes,? ?have the? tee shirt? from the? Corvallis? pipnic? (no misspelling) Ed# In a message dated 5/19/2019 3:50:27 PM US Mountain Standard Time, cctalk at classiccmp.org writes: I never had an HP-01. But, I had several Casio CFX-40 and CFX-400 (wristwatch scientific calculator with "programmer" features (hexadecimal, octal, etc.) I replaced broken case on a few, including Bob Wallace's.? Probably still have some.? underneath everything else. A number of years ago (2002), Scott Mueller (author of "Reapair And Upgrade PC") had some extras of those that he was selling. I have an Epson RC-20 wrist computer (Z80-like, RAM, ROM, serial port, touch screen)? Never imported into USA, so I had to learn to read some katakana. But, the book had example programs, with Z80 mnemonics. NO, nobody has ported CP/M to it. There was a Seiko "smart" watch, that had a "candy-bar" keyboard. Gave that away. I have a Fossil watch, which runs Palm Pilot OS.? It is here and handy. It responded when I plugged in the charger!? I'll give it a day to see if it charges. I have numerous OQO (SNAZZY! 4x5x1 inch XP computer) MOST of the big pile of lithium batteries that I have for them will probably not charge.? They refuse to try if below low threshold, but sometimes a little jump will get them started, and charge up. BTDTHTSFP Been There Done That Had T-Shit Form the Picnic On Sun, 19 May 2019, ED SHATTNER via cctalk wrote: > heh! none? ?for? ?you? ?fred > > In a message dated 5/18/2019 7:04:22 PM US Mountain Standard Time, cctalk at classiccmp.org writes: > t-shits form those picnic events. > > > On Sat, 18 May 2019, ED SHATTNER via cctalk wrote: >> HP-01 calc watch go-withs - brochures, t- shirts, booklets, ad copy who >> else collecting? >> We have a? ?few? ?spare? ?items? ? has? anyone? put? >> together? a? checklist? of? ?go-withs? >> Apparently? there? was a? ?series? of? ?picnics and? t-shits? >> that? came? form those? events. >> >> Drop? ? us? a? note? off list --? >> ?Thanks? Ed# >> (Fondly? remembering the? days? ?Jerry and? I? would? shake? our? HP-01s? at? each other at? ?3000? meetings...) > -- Fred Cisin? ? ? ? ? ? ? ? ? ? ? cisin at xenosoft.com XenoSoft? ? ? ? ? ? ? ? ? ? ? ? http://www.xenosoft.com PO Box 1236? ? ? ? ? ? ? ? ? ? (510) 234-3397 Berkeley, CA 94701-1236

5 years, 8 months

HP-01 calc watch go withs - brochures, t- shirts, booklets, ad copy who else collecting?

by couryhouse＠aol.com

heh! none? ?for? ?you? ?fred In a message dated 5/18/2019 7:04:22 PM US Mountain Standard Time, cctalk at classiccmp.org writes: t-shits form those picnic events. On Sat, 18 May 2019, ED SHATTNER via cctalk wrote: > HP-01 calc watch go-withs - brochures, t- shirts, booklets, ad copy who > else collecting? > We have a? ?few? ?spare? ?items? ? has? anyone? put? > together? a? checklist? of? ?go-withs? > Apparently? there? was a? ?series? of? ?picnics and? t-shits? > that? came? form those? events. > > Drop? ? us? a? note? off list --? > ?Thanks? Ed# > (Fondly? remembering the? days? ?Jerry and? I? would? shake? our? HP-01s? at? each other at? ?3000? meetings...)

5 years, 8 months

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test-drb May 2019