test-drb

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101090 discussions

by miller.blair＠gmail.com

All, I've done this before with good results (I'm not much of a classic computer buff, but sometimes I run across stuff that folks on this list are interested in) so here goes. I've got a Procom CDT14-T8X-ETP networked CD-ROM tower, in pristine working condition, that I've no use for. Not exactly *classic*, but old enough that it's -- as far as I can tell -- not worth selling on eBay (unless someone here informs me otherwise). I thought the case, which is up on casters, would be cool for a project of some sort, but I honestly can't think of anything to do with it. And as far as I can tell, there's no way to get it up and running under Linux, so... One man's garbage, and whatnot. In any event, if anyone's interested, they're welcome to it. First come, first serve -- just email me saying that you want it and when you'll be able to pick it up (I live in Vermontville, MI). Comes with the CD-ROM tower itself, all 14 8X SCSI CD-ROM drives, manual, software (realize this is Netware only hardware), and even the key for the doors. You'll just need to supply two standard power cords. The case has no dents, dings, scratches -- just a couple of very minor scuff marks. If need be, I also might be willing to drop it off... Thanks, Blair

19 years, 10 months

Slightly OT: HP5307A Counter help

by cclist＠sydex.com

Well, it's vintage, anyway. I took out my HP 5307A counter yesterday and discovered that it has decided to go insane. While the CHECK function correctly registers a display of 1's as it should, external frequency measurements are complete nonsense. 60 Hz, for example, shows up as 112 Hz. A quick check of power supply voltages shows they're all within about 5% of nominal value; there doesn't seem to be more than a couple of mv. of ripple. The 10 MHz oscillator is right at 10 MHz. Any ideas or suggestions? It'd be nice to have "old reliable" back again. Cheers, Chuck

19 years, 10 months

HP 9000 G70

by compoobah＠valleyimplants.com

Several specific 9000 server questions: (1) is there any way to figure out how to turn off the "Remote: locked inactive multiple ACCESS FAULT:" messages that come up when you go into the CM? It seems (per newer HP hardware guides) to be looking for non-present hardware. Not sure how to trim it, though. (2) is there any way to speed up the self tests that happen when you go "CO" ? it takes about 5 minutes to get to the PDC . . .

19 years, 10 months

Reading DC100a tapes

by aek＠bitsavers.org

> Would it be possible to put a random DC-100A or HP85 tape in a TU-58 and > connect the heads (after amplification) to an A/D like Al is doing with > 9-tracks? You should be able to connect the heads directly to the preamp, and use the tapewizl directly. I was going to try recovering HP and Apple 40meg tapes this way using a TU58 transport. I haven't looked at the head geometry on the different drives that take DC100 carts yet, though. I know I've scanned some documentation on the 3M transport, will need to see if I've pdf'ed it yet. I'm also hoping to use this on TEK 405x as well (no head movement to worry about controlling) I'd like to try this at some point on QIC carts, but getting firware going to do the serpentine tracks will be a bit of work.

19 years, 10 months

Anyone need Intel iPDS schematics / brochures ?

by Jason.Armistead＠otis.com

All Came across some schematics for our Intel iPDS units while doing a clean-up. Also, by a bit of a fluke, came across the Intel patent which actually explains what is going on inside the iPDS. They give an especially nice piece on the way the multi-processing works, and apart from a few typos where chip functions don't agree with the schematics, it's pretty useful. Also found some colour glossy brochures for the iPDS, in case anyone is interested. Cheers Jason

19 years, 10 months

Source of "goal post" BNC-tees

by dgy＠DakotaCom.Net

Hi, Several of my older machines run on 10Base2 networks, here. I have found that traditional BNC tee's make cable dressing problematic. But, "goal post shaped" tee's seem to be kinder to the cables. (I haven't yet tried "F"-shaped tee's but I suspect they wouldn't be as good as the goal posts). Problem is, I don't find these sold many places. Seems like regular tee's are the norm. Pointers? Thanks! --don

19 years, 10 months

Parallel ASCII keyboards

by dm561＠torfree.net

------------Original Message: >From: "Ethan Dicks" <ethan.dicks at gmail.com> >Subject: Re: Parallel ASCII keyboards >On 7/28/06, M H Stein <dm561 at torfree.net> wrote: >> --------------Original Message: >> From: "Ethan Dicks" <ethan.dicks at gmail.com> >> Subject: Re: Parallel ASCII keyboards >> >> <snip> >> My recollection is that the mid-1970s were the heyday of ASCII >> keyboards (AIM-65 and similar machines). >> <snip> >> ---------------Reply: >> ASCII keyboard on an AIM65??? Not on any of mine... >I have to admit that I've never dug into the AIM-65 ROMs, so if not >ASCII, then just scan codes that get converted in software? >-ethan -----------Reply: Just a scanned matrix, as mentioned elsewhere, nothing on the keyboard except the switches; guess your AIMs aren't exactly handy at the moment :). The -40 did have a parallel ASCII display unit and a Centronics-interface printer, but its keyboard was still a scanned matrix. mike

19 years, 10 months

Data General/ASR-33 TTY Interface Signals?

by ohh＠drizzle.com

This may look familiar. I'm reposting (once), in hopes that somebody may know the answer but missed the post last time. I've got a DEC PDP-8/I with the typical current-loop TTY interface. I also have an ASR-33 teletype. The teletype, though, isn't a DEC-modified version; it's got a Data General card in it instead of the 4915 card DEC installed in their teletypes. I'm Data General ignorant, I'm afraid. :/ So here's my questions: -Do your typical Data General systems use a 20ma current-loop to talk with ASR-33s? -What's the pinout for DG/Teletype connections? Is it something that can be made DEC-friendly by simply wiring a different connector to the DG TTY's cables, or are the differences in signals more extensive? -If the solution isn't that simple, does somebody have a DEC 4915 teletype modification card they wanted to part with (or a schematic of one) (or a DEC-outfitted ASR33 they wanted to trade for a DG-outfitted ASR33 <g>)? Any help appreciated. Thanks! -O.-

19 years, 10 months

Tic Tac Toe Game on Minivac 601

by hanakj＠comcast.net

Hi! Would you have scans of the whole Minivac manual? I am particularly interested to see if there is a schematic of the whole thing. Thanks! Sincerely, Jim Hanak "Make a difference in life - Subtract!" -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.10.5/403 - Release Date: 7/28/2006

19 years, 10 months

ImageDisk Source Code

by dave06a＠dunfield.com

Hi Guys, ImageDisk has reached the point where I haven't had to make any changes for quite a while, so I have decided it is time to make the first public release of the source code. Thanks for waiting - the sources are available on a "Source Code" link by the ImageDisk entry in the "Disks/Software Images" page of my site: www.classiccmp.org/dunfield/img/index.htm Regards, Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html

19 years, 10 months

A Technical History of Apple's Operating Systems

by pete＠dunnington.plus.com

On Jul 28 2006, 22:25, Patrick Finnegan wrote: > On Friday 28 July 2006 21:42, Roy J. Tellason wrote: > > It may be that I'm mis-remembering, this _was_ thirty years ago or > > so I was last messing with that machine. Wasn't there a line on > > that bus to indicate one or the other byte, though? > > Yeah, BDAL00. From looking at a QBUS pinout, I don't see any other > signals to indicate even/odd. There is one, for writing. For reading bytes, the CPU just reads a word and discards the upper byte. For writing, it asserts BWTBT and only the lower byte is written. -- Pete Peter Turnbull Network Manager University of York

19 years, 10 months

XP1000 problems

by healyzh＠aracnet.com

Does anyone here know what the startup of a Compaq XP1000 (Alpha-based system for OpenVMS) is supposed to look like? I have an XP1000 with PowerStorm 300 and U2W-SCSI that I just received. It powers on, and all 8 diagnostic LED's light up. There are no beeps, and there is no video. I've tried to connect a VT420 to the serial ports using the cable for my PWS 433au, but have had no luck. I've tried reseting the CPU board, RAM, Video, and SCSI. Any suggestions would be appreciated. Thanks, Zane

19 years, 10 months

A Technical History of Apple's Operating Systems

by ken＠seefried.com

From: Fred Cisin <cisin at xenosoft.com> > and people get especially weirded out when you count on your fingers in > binary (up to 1023). Just reaching the number 4 upsets them. By extention of this method, I should be able to count to 2097151. My wife, unfortunately for her, can count only to 1048575. :-) Ken

19 years, 10 months

DD disks and HD drives (was: Where can I find...)

by AdminAsst＠MiCom.net

Hi, We have 11 pulled and in working condition TEAC FD55 360 K Floppy Drives. Are you interested and what would you pay for them? We also have Mini Flexible Disc Drives #M4853, 10 in stock. If interested in those also name your price?

19 years, 10 months

Apple Tape Backup 40SC

by aek＠bitsavers.org

> I would > like to find someone who could > borrow or sale his drive or read these tapes for me. Every drive I have been able to find has a bad roller. It is not very likely that you will find a working drive. Which version of the Microexplorer software do you have? There is at least one version which has been recovered.

19 years, 10 months

A Technical History of Apple's Operating Systems

by compoobah＠valleyimplants.com

It makes much more sense to talk base-2 about computer things, since computers operate base-2. Trying to force computer things to base-10 would be similar to walking around spouting base-7 numbers to people and expecting them to make sense of it. Although, base-2 counting of paces is useful. Once your "counter" rolls around to zero you've gone about a mile (2^10=1024 paces)

19 years, 10 months

Apple Tape Backup 40SC

by mcwood＠nefkom.net

Good day, I would like to backup up some old Apple 1/4" qic tapes. I do have an "Apple Tape Backup 40SC" drive but the drive's rubber became soft. I already damaged 2 tapes so I would like to find someone who could borrow or sale his drive or read these tapes for me. What's on them ? Software for TI Microexplorer Lispmachines ! Greetings, Marc P.S.: I'm located in the south of Germany.

19 years, 10 months

Not classic, but free: HP-UX

by compoobah＠valleyimplants.com

Just heard of a good deal from HP: they seem to be cleaning out the PA-RISC HP-UX B11.11 CD sets: you can get one free at : http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumbe… Not classic yet, although I suppose it will run on a few ontopic machines.

19 years, 10 months

XP1000 problems

by mamcfadden＠cmh.edu

I just picked up 3 XP1000 boxes, then I found there were no CPU boards in them. I'm in Kansas City. 2 have disks, 1 has display card, they have PSU and CR-ROM drives Large power sink on motherboard made me think that was the CPU. I thought memory was under PSU. Imagine my suprise If anybody wants them they are yours for shipping. Thanks Mike

19 years, 10 months

buying an Alpha Micro

by spectre＠floodgap.com

Today I was feeling nostalic for the old Alpha Micro I used to use, the first computer I actually hacked into manually (much to the dismay of the system administrator who then demanded to know how I did it). In particular I know it was a 68K AlphaMicro, probably an AM-1200. Is anyone getting rid of one of these, or knows someone who is? I found an Alpha Micro emulator and it's even Mac friendly but it just isn't the same as being in front of one of those amber terminals with an AMOS prompt. -- --------------------------------- personal: http://www.armory.com/~spectre/ --- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Had this been an actual emergency, we would have fled already. -------------

19 years, 10 months

RGB & LCD...

by trag＠io.com

>Date: Thu, 27 Jul 2006 16:05:14 -0500 >From: Brad Parker <brad at heeltoe.com> > I have an old computer from the '80s and it has a frame buffer with > RGB+S (sync) output on classic BNC connectors. > > But I do have a > bunch of new-ish LCD monitors which seem quite happy to sync up to > pretty much anything. >> > So, can I just (somehow) connect the RBG+S signals to a mondern LCD? > Has anyone tried this? At some point I had a VGA to BNC cable. I bought it at Altex Computers here in Austin, TX when I received some old CRT monitors with BNC connections. They have a web presence so, if they still carry them, you may be able to mail order one. Of course, I don't know if such cables work in the other direction but I can't see why they wouldn't. One list member's suggestion about checking the peak voltages sounds prudent. > I did once have a DW13 to RBG/BNC connector. Is DW13 the connector often used by Sun which is frequently called 13W3? If you get an IBM 9519 (T85A) LCD panel (18.1", 1280 X 1024 native resolution, ca 2000 - 2001) it has VGA & 13W3 connectors. So your BNC to DW13 cable might be able to connect your machine to an IBM T85A LCD panel. Jeff Walther

19 years, 10 months

NeXT Computer (cube) available

by uban＠ubanproductions.com

I have a NeXT Computer (cube) with the 68040 processor board, 1Gb hard drive, 16Mb RAM, nice monitor, mouse, and keyboard. The machine works and has NEXTSTEP 3.0 installed. The optical drive does the spin up/down cycle when you try to load a disk, so it minimally needs a cleaning to be useable. I was given this machine a few years back and recently dusted it off to take it to VCF Midwest 2.0. I've decided that someone else would probably get more enjoyment/use out of the box than I am and so I am offering it up to anyone who would either like to pick it up or pay for shipping... --tom

19 years, 10 months

Parallel ASCII keyboards

by dm561＠torfree.net

--------------Original Message: From: "Ethan Dicks" <ethan.dicks at gmail.com> Subject: Re: Parallel ASCII keyboards <snip> My recollection is that the mid-1970s were the heyday of ASCII keyboards (AIM-65 and similar machines). <snip> ---------------Reply: ASCII keyboard on an AIM65??? Not on any of mine... m

19 years, 10 months

Parallel ASCII keyboards

by ajp166＠bellatlantic.net

> >Subject: Re: Parallel ASCII keyboards > From: "Ethan Dicks" <ethan.dicks at gmail.com> > Date: Fri, 28 Jul 2006 13:16:25 +1200 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 7/28/06, M H Stein <dm561 at torfree.net> wrote: >> --------------Original Message: >> From: "Ethan Dicks" <ethan.dicks at gmail.com> >> Subject: Re: Parallel ASCII keyboards >> >> <snip> >> My recollection is that the mid-1970s were the heyday of ASCII >> keyboards (AIM-65 and similar machines). >> <snip> >> ---------------Reply: >> ASCII keyboard on an AIM65??? Not on any of mine... > >I have to admit that I've never dug into the AIM-65 ROMs, so if not >ASCII, then just scan codes that get converted in software? > >-ethan A lot of the keyboards were laid out such that the row column values were ASCII 1:1 corospondence for the the non shifted condition. Those that use the Ay, KRO chips this was the rule and also those chips had a ~2500 bit rom to sort out things like shift and alt-chars. Scan codes are a mostly PC invention. Some of the simpler designs like that sold by RS and SWTP did it all with a few peices of TTL and some diodes. Building a parallel interface ASCII keyboard is not that hard. The only hard part is finding a suitable keyboard (keyswitches). I happen to have to keyboards that are not parallel but the serial format is like that of the PCxt with one variation, the keycodes are direct ASCII. The onboard 8035 with 2716 did all the work (key scan, encode and serialize). the same chip with a minor code change could easily do parallel. Out on the net there are PIC based code to translate PS2 keyboard to ASCII serial and even parallel. Allison

19 years, 10 months

HP-UX and HP9000s WAS Re: Not classic but free- HP-UX

by compoobah＠valleyimplants.com

>only down side of this box (C240) and others like it is that the boot disk >generally >has to be a HVD Scsi drive. Most of these have narrow single ended >scsi interfaces, but they won't boot HP reved the SCSI at C200 - it's now Ultra-Wide-SE (confusing moniker- sounds like it should be 32-bit datapath or something. Ultra narrow also brings up interesting mental pictures). All dual-bus HP9ks will boot off of a narrow CD-ROM, seems likely some at least will boot from narrow HDDs. Regarding the Nova series (FGHI 40,50,60,70) Not "supported" but workable. I have a G70 2xPA7100 box happily crunching away with HP-UX 11i [9/2003] (well, not now - it's too hot to run the big beasts) Auto-install crashed, but manual install worked O.K. I have heard that the ASP chipset and CRX graphics have been definitely done away with, but could be worth a try - it's not like you're out big $$. Try the manual install - auto install seems more likely to break with unsupported equipment..

19 years, 10 months

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