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

VMS program to read/write simh .tap container files?

by bob＠jfcl.com

Is there a VMS program that will read/write simh style tape container files (.tap) from real magtapes? Thanks, Bob Armstrong

20 years, 1 month

7
8
0 0

Fluke 87 calibration?

by mouse＠Rodents.Montreal.QC.CA

Thanks to my sister's bf's generosity, I am now the proud owner of a Fluke 87 "TRUE RMS MULTIMETER". However, I am told it needs recalibration (this is why he gave it away). It is not _grossly_ out of calibration; as a quick test, I measured +5V and +12V from a handy (running) computer and local mains voltage; I got 4.99V (DC), 12.17V (DC), and 122.7V (AC) - all totally plausible. (Actually, when I first turned it on, it appeared as though most of the segments on the display were flaky, some dim, some just not working. I took it apart and put it back together and now the display totally works - the connection from the pcb to the display is pure pressure, and I conjecture something jarred it slightly loose.) I did a bit of searching, but didn't find any manuals around (eg, bitsavers' fluke/ directory didn't have anything relevant-looking). Anyone know the procedure, or can point me at a manual somewhere? /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

20 years, 1 month

2
3
0 0

Imagedisk and secondary FDC

by julesrichardsonuk＠yahoo.co.uk

Out of interest, has anyone tried Imagedisk with a secondary FDC? I'd just like to verify that the software works OK with it before trying to diagnose suspected hardware problems! [1] [1] With the Zilog 765 board, for the record - board modded to use 0x370 as the port base, but currently wired to share IRQ 6 and DMA channel 2 with the PC's built-in floppy controller. cheers Jules

20 years, 1 month

4
4
0 0

Apple II card info needed

by rcini＠optonline.net

All: Today I received three Apple II cards for which I'd like to get some info/manuals on. The first is the "Synch Printer Interface Card" which I believe is for the Silentype printer (It has a 9-pin DE9F on it). The second is an Apple-labeled 12k ROM card with part number 960-9104. It has six sockets and appears to be ORGed at $D000. There's a jumper labeled "2716" and a small red toggle switch. Maybe it can program EPROMS? Five of the six slots are filled with Apple ROMs - the D8 ROM is missing. The third one is from Xebec Systems and is labeled "Apple Host Adapter". It has a 50-pin 0.1" header along one side. No custom silicon (only an EPROM). Given the manufacturer and pin header, I'm guessing SCSI. Any info greatly appreciated. Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: http://www.altair32.com/ /***************************************************/

20 years, 1 month

3
2
0 0

Used Wyse 60 monitors

by James＠jdfogg.com

> Hi all, > > I was just asked by the local phone company if I was > intersted 14 or 15 wyse 60 teminals. > I am not, but if anyone on the list is interested in them > (and wants to pay the freight from here, ZIP is 54001 or pick > them up) I would volunteer my time to help package and ship. > If no one is interested, to the dump they go...... Was this TDS Telecom?

20 years, 1 month

1
0
0 0

Used Wyse 60 monitors

by pspan＠amerytel.net

Hi all, I was just asked by the local phone company if I was intersted 14 or 15 wyse 60 teminals. I am not, but if anyone on the list is interested in them (and wants to pay the freight from here, ZIP is 54001 or pick them up) I would volunteer my time to help package and ship. If no one is interested, to the dump they go...... Phil PS I really would like for all of them to go to one home, I am not interested in trying to package and ship 14 or 15 indivdual monitors paperwork etc.

20 years, 1 month

1
0
0 0

MSD SD-2 Service Manual

by starmaster＠gmail.com

Does anyone know where I can get an MSD SD-2 Service Manual? I'm willing to pay an indivual or a company (Can't find one that has it). Thanks dwhit(at)dwhittaker(dot)com

20 years, 1 month

2
1
0 0

Pack Inspector

by aek＠bitsavers.org

It's probably an RP05/06. The same seller had an alignment pack, which I've given to Guy S. If you just bought the pack inspector from the same source, it had the manual with it, which would be useful to scan.

20 years, 1 month

1
0
0 0

Goodies available in Ontario Canada

by dave06a＠dunfield.com

Hi Guys, Going through the collection to see what I can move out to make room for material closer to my areas of interest. I have the following systems available: --------------------------------------------- ADDS Mentor 2000 Nice multiuser PICK machine (I had great fun hacking into it to obtain the SYSPROG password as some of you may recall). Unisys A7-311 Dual CPU "mainframe in a box" NEC N5200 Japanese version of NEC APC One of the few machines to run DOS from 8" floppies. Runs DOS and CP/M86 Compuduct "Rainbow" Large oddball S-100 computer. BMC/OKI IF-800 Large all-in-one Z80 CP/M system with Integrated, color monitor and printer. NekoTech Powerstation A portable ALPHA machine. Generic ALPHA 164LX based machine. Almost all of my MACs, including: Plus, several SEs, II, IIfx, IIsi, IIci, LC, LCII, Classic, Centrius 650, Performa 6116CD, Powermac 7200 + Lots of MAC peripherals and goodies All of my Suns including: 2 3/60s, Sparc1, Sparc4, Sparc5, IPX, Classic + Lots of SUN peripherals and goodies Misc. Material: ------------------ A couple of Morrow/Freedom100 terminals. Probably a couple of other terminals as well. TRS-80 Model III chassis, no drives, mainboard is dead due to corrosion (could be repaired), one power supply is bad, does have a disk controller. Large quantity (many thousands) of 3.5" floppy disks - both 720k and 1.44M. These are NOS - from the days when we used to shipped our software on floppy disks. Large TRS-80 Daisy Wheel II printer. Coleco Adam printer (only) - This contains the power supply for the whole system. Victory Autoloader with two complete sets of 5.25" and 3.5" hoppers (two sets of each). Remington Rand Model 17 typewriter. Piles of SCSI Drives, CD readers, CD writers, QIC and DAT tape drives. Piles of QIC and DAT tapes. Several Monochrome and CGA monitors. Probably lots more jun... er... find high-quality vintage equipment - I'll try to get a list up on the web site which I can keep updated. ---------------------------------------------------------------------- Photos and more information about most of this material is available on my web site. Items are located near Ottawa, Ontario Canada. 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

20 years, 1 month

3
2
0 0

Imagedisk and secondary FDC

by kelly＠catcorner.org

> Out of interest, has anyone tried Imagedisk with a secondary > FDC? I'd just > like to verify that the software works OK with it before > trying to diagnose > suspected hardware problems! [1] > Yes, I use it with a secondary FDC and it works just fine. Kelly

20 years, 1 month

1
0
0 0

Free Newsgroup Access

by jhfinedp3k＠compsys.to

Hi All, Just thought I would ask for some help - are any text based groups still available? About a year ago, my ISP dropped support for newsgroups. I was about to access the only 2 newsgroups I care about via my local university. However, that was recently dropped as well. I only use 2 newsgroups: alt.sys.pdp11 vmsnet.pdp-11 Does anyone still allow access? READ ONLY is acceptable, although I would prefer to be able to may a post a couple of times a year. Sincerely yours, Jerome Fine -- To obtain the original e-mail address, please remove the ten characters which immediately follow the 'at'. If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.

20 years, 1 month

6
5
0 0

IC pin corrosion

by cctech＠retro.co.za

Hi Tony and all I get the digest, so this mystery might be solved by the time you read this... >Enough to form a pool on the floor under the table on which the set was >placed. And it would come back after being cleaned up. Check the antenna :-) Water leaking in at the top and running down the coax. W

20 years, 1 month

1
0
0 0

Apple II card info needed

by buseyl＠yahoo.com

--- Richard A. Cini wrote: > > Yes, from your description and some searching, > that's what it is. Can anyone > tell me what was supposed to go in the D8 socket? > All of the pictures I've > seen show that socket empty. Anything you want. An Apple with Integer BASIC firmware typically had one or two sockets open for additional ROM programs or utilities. IIRC, the only popular one was the 'Programmer's Aid' expansion ROM. When the Applesoft firmware took over the Apple world, it gobbled up the whole 10K ROM space beneath the monitor so that was the end of that. A shame. Fortunately Apples don't require Applesoft to be useful. > If anyone has a scan of this manual handy I'd > appreciate getting a > copy. Thanks! I've never seen the manual. The wonderful book, "Understanding the Apple II" covers the Firmware card and even provides instructions for some useful hacks like F8 ROM selection. You can find it in the online manuals section of 1000bit under the Apple heading. www.1000bit.net Liam Busey __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

1
0
0 0

Fw: Thanks for the Donations

by jrkeys＠concentric.net

Sorry did not look at the return address, this should have been off line. ----- Original Message ----- From: "Keys" <jrkeys at concentric.net> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Sent: Tuesday, July 18, 2006 8:42 PM Subject: Re: Thanks for the Donations > ----- Original Message ----- > From: "Robert Ollerton" <rollerton at gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Sent: Tuesday, July 18, 2006 9:06 AM > Subject: Re: Thanks for the Donations > > >> How much short on money are you? >> >> I would like to make sure the sds910 gets rescued. >> >> Bob >> >> On 7/17/06, Keys <jrkeys at concentric.net> wrote: >>> Thanks to all that have sent help in the form of money or labor offers >>> for >>> the two large rescues I have going on soon, but we did come up short on >>> the >>> money side. I have been given to the end of August to pick these items >>> up >>> and hope to borrow the money that is needed to complete both trips. I >>> will >>> be sending tax receipts to all the donors and will update you off list >>> after >>> everything is complete. Thanks again John >>> >>> >> > >

20 years, 1 month

3
3
0 0

Power Supply issues

by compoobah＠valleyimplants.com

O.K. - now on to the power supply. The +5v channel 1 supply is good, 69 mV peak to peak AC noise (measured on a scope with AC coupling) the +-12v channels are ~292 mV of noise the -5v channel has 500 mV of noise, even with an additional 1000 ?F capacitor across the output (to hopefully filter this junk out) (-5V also has periodic fluctuations at a lower frequency) All of this is high-frequency, excluding the -5v hum. In short, it doesn't look like adding an external filter cap will help much, unless I go all the way and throw in a LC filter. Pulled the P/S apart, and the board with +-12V and -5V has peculiar capacitors mounted on it - 3 lead Mallory Aerovox. Are these really the multipart electrolytics that went out of style (I thought) with solid state? The wiring is 2 leads connected to one side of the power rail, one lead to the other. Could twin-lead caps be substituted?

20 years, 1 month

4
3
0 0

Imagedisk UM8398 FDC support?

by julesrichardsonuk＠yahoo.co.uk

Out of interest (I suspect the answer's no), does Imagedisk support boards based around the UM8398 FDC IC? According to the datasheet it'll handle FM density, but I suspect that it's totally incompatible with anything else on the planet... cheers Jules -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

20 years, 1 month

5
14
0 0

why you should tell friends to save you electronic stuff :)

by jwest＠classiccmp.org

After returning from VCF, a friend of mine brought me some stuff he saw headed for the skip and saved it for me. Some of it is fun stuff! 1) DEI v.35 to RS232 Monitor Interface Adapter - this box connects between two V.35 devices and presents a DB25 that can be connected to a programmable data communications tester. 2) Two NAVTEL 75/1200 breakoutbox/testers - these cute boxes not only are breakout boxes, but also do sync/async troubleshooting, bert tests, auto format negotiation, etc. 3) Fluke 8920A True RMS Volt Meter 4) Teltone TLS2 Test Line Simulator - I believe this box simulates a telco between two analog telephone devices (such as modems, etc.). 5) B&K Precision 1651 triple output bench power supply 6) THREE Tektronix 834 Programmable Data Communications Testers - these are awesome, I was thinking about buying one, now I have three :) I'd prefer a Spectron Northern Telecom Datascope2000, but hey, these were free :) 7) AMP MI-1 50 pin telco cable making tool So... tell your friends to save you "funny looking electronic stuff", you never know what you'll get :) Jay West

20 years, 1 month

13
21
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troubleshooting video

by compoobah＠valleyimplants.com

>I wonder what those are? they don't sound rignt to me, I would have >expected a 2-level singal only. I asusme all the power rails are nice and >stable (sorry, I've had that one all too often...) Threw the scope on them, 5v looks O.K. (about 2.5x background noise (I'm using unshielded alligator clip leads, no probes yet). -5v +12v and -12v are all quite noisy. I don't know if this is a recent development (I checked it out after replacing some caps in the 5v section), or if the trick of using a DMM in AC mode to check for noise doesn't really work. I wonder if there's a common filter cap that's dried out somewhere, or if ones on each channel have gone (there are 4 boards, mains rectifier & smoother, chopper, -5 v and +-12v channels, and 5v at 100(something) A) Maybe it would be easier to do another external filter cap on each channel. I'll look at it a bit more and see what's up.

20 years, 1 month

2
1
0 0

VMS program to read/write simh .tap container files?

by bob＠jfcl.com

>I'd recommend using VMSTPC to read the tapes, and then using the SIMH tool >(it's in the seperate tools tarball) to change it to a SIMH .TAP file. I know about VMSTPCE (use it all the time), but its file format is not the same as simh. A tool to convert, however, would solve all the problems. Can it convert both ways? VMSTPCE uses an RMS file with VFC file organization to store every tape record in one file record - it's the "right" way to do it, but unfortunately not very portable to other OSes. Bob

20 years, 1 month

2
1
0 0

HP 3000 available

by blairrya＠msu.edu

I have an HP 3000/922 (PA-RISC architecture, not Series II [sorry, Jay!]) available that I am looking to get rid of. This machine is in a low-boy type rack with casters, with a similar sized rack for disks. It has both HP-IB and SCSI controllers available for tape, disk, and over media. It has an Ethernet controller, a DDS drive (possibly dead), and two disks internally. The disk rack has 3 HP-IB disks of the same model, each somewhere in the 650MB range. It will happily boot >from either the HP-IB chains or the SCSI controller. It runs and was passing diagnostics properly last time it was fired up (last year). If anyone would like this machine, I can bring it to VCF/Midwest, or it can be picked up near Lansing, MI. I'm not asking anything for this machine, I just need the space back. I would look fondly upon offers of RS/6000 gear or quiet 9GB+ 68-pin SCSI drives, however :) I have some more (though smaller) machines that I will be posting later that will also be available at VCF/Midwest. -Ryan

20 years, 1 month

3
2
0 0

Apple II card info needed

by paulrsm＠buckeye-express.com

1. Silentype printer interface card http://appleiifs.tripod.com/graphics/synchprinter.jpg 2. Integer BASIC Firmware Card. The 2716 jumper let you replace the 2516(?) ROMs with 2716 EPROMs. The red toggle switch lets you choose whether the motherboard or firmware card ROMs are active at power-up. http://apple2history.org/museum/peripheralcards_apple/firmware_card.ht ml 3. Xebec SASI hard drive controller for Sider brand hard drives. -- Paul R. Santa-Maria Temperance, Michigan USA

20 years, 1 month

1
0
0 0

keyboard cleaning

by chrism3667＠yahoo.com

is wd-40 a good idea? I was thinking isopropyl alcohol might not penetrate as well or quickly. And Im not paying another tenner for that radio shack stuph, especially since I already have a can of it *somewhere*. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

13
23
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if dectape goes bad

by dgriffi＠cs.csubak.edu

Suppose you have a dectape and for whatever reason the tape on the reel is destroyed. What currently-available tape can be used on the reel instead? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

20 years, 1 month

1
0
0 0

sn75als056/057

by aek＠bitsavers.org

Has anyone ever looked at these parts as Unibus/QBus transceivers? They appear to still be in production.

20 years, 1 month

2
1
0 0

Apple II card info needed

by buseyl＠yahoo.com

--- Richard A. Cini wrote: > > Today I received three Apple II cards > for which I'd like to get > some info/manuals on. -snip- > > > > The second is an Apple-labeled 12k ROM card with > part number 960-9104. It > has six sockets and appears to be ORGed at $D000. > There's a jumper labeled > "2716" and a small red toggle switch. Maybe it can > program EPROMS? Five of > the six slots are filled with Apple ROMs - the D8 > ROM is missing. This sounds like an Apple Firmware card with Integer BASIC installed. With a flip of the switch and a system reset your Apple's onboard firmware will be replaced by whatever is on the board. A very useful expansion in the 48K Apple world when their was still a good mix of Interger and Applesoft BASIC programs floating around. It was largely superseded by the 16K RAM Language card. Liam Busey __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

2
1
0 0

Sun E4000 Peripheral Power Supply broad?

by ray＠arachelian.com

Any chance someone has a spare? :-) I recently got my hands on an e4k, but the peripheral power supply seems dead. I took it apart and saw that the fuse is good, haven't had a chance to test its components, but thought I'd ask.

20 years, 1 month

2
1
0 0

CoCo2 spoken for

by dgy＠DakotaCom.Net

Hi, I have a few names of folks interested in the CoCo2. Thanks! --don

20 years, 1 month

1
0
0 0

OT-ish? McIlroy's "Synthetic English Speech by Rule"

by dgy＠DakotaCom.Net

My only claim to being *possibly* on-topic is the age of the article (1974) and the fact that it inspired many of the early phoneme-driven speech synthesizers (Votrax, etc.). Does anyone have access to a suitably good engineering library with a copy of: McIlroy, M D, "Synthetic English Speech by Rule", Bell Telephone Labs, CSTR #14, 1973 (though I have also seen it referenced as 1974!) or: Ainsworth, W A, "A System for Converting English Text to Speech", IEEE Trans Audio & Electroacoustics AU-21 #3 pp 288-290, 1973 The former is far more interesting to me than the latter :-( (sigh) There are *some* advantages to being a student (though those days are long past, in my case!) I can try my local public library to see if it is available via ILL. I guess I could also try the local university's engineering library. Thanks! --don

20 years, 1 month

1
0
0 0

Magtape market...

by julesrichardsonuk＠yahoo.co.uk

Out of interest, what's the market for unused, still-sealed magtape (9 track, 2400ft*, 6250bpi) like? I got hold of a few reels the other week and can't decide whether we should just put them to use them as/when necessary, or use them to raise funds for other museum projects... * well, near as I can tell. The scale on the reel goes from zero to 2000 in increments of 400 and is some way over the 2000 mark; I'm assuming it's feet! (did anyone ever sell magtape > 2000ft that *wasn't* 2400ft in length?) thanks Jules

20 years, 1 month

3
5
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IC pin corrosion

by julesrichardsonuk＠yahoo.co.uk

Out of interest, are any particular types of environment harsher for IC leg corrosion than others? I've not seen that much corrosion about, other than surface stuff that can be cleaned off - but I'm currently trying to get an old Acorn System Three running, and about half the ICs in it are leaving some of their pins behind when removed from sockets as they've corroded right through :-( The PCBs are otherwise in very good condition, but for some reason a lot of the chips (most notably DRAMs and LS logic) are in a right state, and it would seem that *something* has been eating away at them - yet *some* of the ICs are totally corrosion-free (as are all the passives, IC sockets etc.) Luckily all the dead parts (so far!) are ones that I've got spares for, but it's just made me wonder what's accelerated the decay in some of the chips but not anything else (unfortunately I only picked this machine up last week so don't know its storage history, but I can ask the previous owner). Judging by the pretty good condition of the rest of the machine, I wouldn't say that it's been in a particularly high moisture environment. cheers Jules -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

20 years, 1 month

11
19
0 0

Televideo TS-801

by pat＠computer-refuge.org

So, I picked up some new toys at "The Event" yesterday, and I was wondering... Does anyone happen to have copies of CP/M (or any other OS) for Televideo's TS-801? These seem to have a pair of 5.25" DSDD 48tpi drives, from what little information I've seen from google. I picked up a pair of TS-801's and a TS-806C (not to be confused with a TS-806), which is a "shared tape drive" box. I haven't found much info there that I can't figure out from a quick look at the machine, though.. Thanks. Pat (Wishing he could just ask Don for the disks...) -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

20 years, 1 month

3
12
0 0

FTGH: CoCo2

by dgy＠DakotaCom.Net

Hi, I'm just finishing up documenting this CoCo2. Then, unless someone wants to pony up for shipping >from 85751, it's headed to the landfill. (though I will probably steal the RF modulator off of it before doing so). Original cardboard box is showing signs of age... :-( Any takers? (only the lower 48 US, please) --don

20 years, 1 month

1
0
0 0

Shipping a Diablo series 30 drive

by aek＠bitsavers.org

> Has anyone here shipped one of these drives before? Look at the service manual on bitsavers. There is a triangular shipping plate to prevent the head assembly from sliding out.

20 years, 1 month

1
0
0 0

Looking for some HP LJ3 repair hints and a paper tray

by compoobah＠valleyimplants.com

> It's also been throwing 13 Paper Jam errors, but there's no paper jam >visible. Anyone know what causes this? I'm guessing the optosensor on the >fuser assembly has failed, but I can't identify the opto. Does anyone have a >part number for it? You might want to try a good cleaning first. I've had several laser printers display this issue, and it was likely just dust and fibers in the opto inhibiting the light path. A good way to test emissive IR components is with a CCD camcorder. Point the camera at the thing (remote . . . ) and the light will be visible on the monitor if it is functioning.

20 years, 1 month

1
0
0 0

old Solaris s/w, docs

by brad＠heeltoe.com

I have 2 boxes of old Solaris developer docs & cd's, mostly Solaris 2.1, 2.2, 2.3, maybe some 2.4. I think there is a compiler in their also. Answerbook, install, etc... If anyone wants them they are free for shipping (not light, I'll bet each box is 15lbs). -brad

20 years, 1 month

1
0
0 0

IDO 4.1 for IRIX 4.0.5

by compoobah＠valleyimplants.com

super-post-script: In the process of doing this research, IRIX scribbled over my filesystem while I was making a tarfile backup of a directory. I went to SGI's ftp server to see if I could find a recommended/required patchset, but all they had for IRIX 4.0.x was an updated Sendmail (in ftp.sgi.com/patches). Are older patchsets still squirelled away somewhere on the FTP site? (I'm looking for 4.0.5 and 3.3.2)

20 years, 1 month

1
0
0 0

IDO 4.1 for IRIX 4.0.5

by compoobah＠valleyimplants.com

Abstract: headers are there, not much else. I moved the IDO 5.3 IRIX4 files over to my P.I. and started playing around with them, and there is mixed news. Bits of IDO4.1 (the recommended IDO for IRIX 4) are there, including headers and cc, but other bits are missing (make, gendist, and other stuff that make life easier.) So news is mixed: it looks like you could concievably use the IRIX4 files on the freely-distributable IDO 5.3 to get a lot closer to having a development environment on IRIX 4.0.x, but you'll still need to supplement (big time) with GNU tools. I have the tarfile of the IRIX4 subrelease here if anyone wants it, but I don't think I'll put too much more work into making it nice. I use 3.3.2 more often on that machine, anyway. I believe there is also a way to cross-build on an IRIX 5 host.

20 years, 1 month

1
0
0 0

Thanks for the Donations

by jrkeys＠concentric.net

Thanks to all that have sent help in the form of money or labor offers for the two large rescues I have going on soon, but we did come up short on the money side. I have been given to the end of August to pick these items up and hope to borrow the money that is needed to complete both trips. I will be sending tax receipts to all the donors and will update you off list after everything is complete. Thanks again John

20 years, 1 month

2
2
0 0

Shipping a Diablo series 30 drive

by wmaddox＠pacbell.net

Has anyone here shipped one of these drives before? I'm looking for advice on the proper way to secure it for shipment. There is no obvious shipping lock mechanism, though the head actuator appears to be secured when retracted. --Bill

20 years, 1 month

1
0
0 0

Datarecovery from overwritten tapes was Re: Reading DC100a tapes

by g-wright＠att.net

-------------- Original message ---------------------- From: "Nico de Jong" <nico at farumdata.dk> > From: "Al Kossow" <aek at bitsavers.org> > > 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. > > > Would this principle work for recovery of 4mm (DAT) and 8 mm (Exabyte) > tapes? It happens regularly that customers ask if I can read "behind" a > small file they "happened" to write. I have no problems with 9 track and > 3480/3490's. > > Nico > If It Helps ........... Some place out there, there use to be a tape reading tool that would read the tape backwards. I believe is was run under linux ??? I have never used it. - jerry

20 years, 1 month

2
1
0 0

DSDD 3.5" floppies

by dgriffi＠cs.csubak.edu

While cleaning out the pile-o-stuff I came across half a metric buttload of DSDD 3.5" floppies. If anyone wants/needs some, I'll send 20 anywhere in the continental US for $2. -- David Griffith dgriffi at cs.csubak.edu

20 years, 1 month

1
0
0 0

Dec VT320 printset

by jim＠g1jbg.co.uk

Hi, I'm trying to repair a couple of these units, does anyone have the printset for them (or even just a circuit diagram)? Many thanks Jim Beacon. Please see our website: www.g1jbg.co.uk

20 years, 1 month

2
1
0 0

Troubleshooting video

by compoobah＠valleyimplants.com

> Is that R, G, B, and composite sync, or what? >I don't want to be appearing to 'teach grandmother how to suck eggs', but >how are you measuring the sync frequencies? Where are you measuring them? >waht instrument are you using? And so on.... Yep, RGB on seperate BNCs and H-V combined on another. I'm throwing a LeCroy scope onto the SYNC output and using the cursors to measure between the regular pulses. I pulled the graphics boardset and found one jumper (ext/int) that was set differently from Gerhard's model (thanks for the settings!) and I swapped that, which raised the sync frequency to 29.1 KHz. The total waveform looks like: 29.1-29.4 KHz negative-going pulses, with 134muS square negative pulses occuring at 66Hz (looks like it might be stuck in 33Hz interlaced mode). there are stronger negative pulses in line with the ~29 KHz sync at 400.96 Hz, and on top of that there are 174muS blanks in the signal (at the positive end) at 2.56 KHz -----\/---\/---\/---\/ (regular pulses) ---|_____|--- (vsync pulse, 66KHz) \/---------\ /---\/---\/ (the 2.56KHz blank and strong negative pulse) \/ not to time scale, and the strong negative pulse was the same duration as the regular horizontal pulses. The strong negative always occured after a blank, but not every blank. The Display Generator board is crystal-controlled (meaning I should have pulled it out all the way before pontificating) There is a set of jumpers on the main processor board (IP2) which are supposed to set resolution, with choices between 60Hz non-interlaced, 33Hz interlaced, RS-170A, and European Standard. These seem to make no difference. The jumper to select master/slave mode on the processor made a difference (dropped the sync to ~2KHz), so I know there is a control connection between the IP2 and the graphics. I checked the DIP switches, and they function. I suppose I could try the system with no processor and see what the default sync rate is. I'm wondering if the system (or parts) were set up for genlock of some sort, and is expecting something it's not getting. I'll throw the LeCroy on a Sun 3/160 and check the waveforms for comparison. Sorry, but you might need to "teach grandmother how to suck eggs", this is both the first computer video and the first scope I've really dug into. I found out really fast that my NTSC TV book doesn't help much. . .

20 years, 1 month

2
1
0 0

IC pin corrosion

by technobug＠comcast.net

> Incidnetally, I have heard of a TV set that leaked water onto the > floor, > and no the cause was not a vase of flowers on top of it. Any ideas? > > -tony > > Rear projection TVs of the older sort are water cooled... CRC

20 years, 1 month

1
0
0 0

Various tape/backup media available

by SUPRDAVE＠aol.com

Pay for shipping and add whatever else you'd like for the following tapes, all new. QW5122F plenty of these! MC3000XL Taumat format MC3000XL 2120XLF DC6150 DC600A QD9120 DC9250 these are used IIRC DC2080 MC3020XL three TK70 two 88meg syquest 105meg 3.5 syquest four HIFD 200meg floppy. <?> QG15M D8 8mm tape plenty of 2120 and 2120XL

20 years, 1 month

1
0
0 0

Reading DC100a tapes

by kevenm＠reeltapetransfer.com

I have a friend who has a DC100a tape with no way to read it. Just wondering if anyone here can and get data onto a pc. I do have a Colorado Jumbo 250 that I have used DC 2120 QIC-80 tapes with. But don't know if that would read DC100a tapes. Keven Miller kevenm at reeltapetransfer.com Orem UT 84097.

20 years, 1 month

4
5
0 0

Reading DC100a tapes

by vp＠drexel.edu

"Nico de Jong" <nico at farumdata.dk> wrote: > Seems like a dead end to me, unless a working HP85 could be found. Well I have a couple of HP-85s and HP-9915s (the embedded version of the HP-85). I also have an HP-9825A which also uses the same type of tape. However, if the tape was not recorded on a similar machine it will probably not be readable by my machines. > I don't know about TU58 yes its the same, but the TU58 uses preformatted cartridges (can't format cartridges on its own). While the cartridges are physically identical to the HP ones, there is no data compatibility. **vp

20 years, 1 month

1
0
0 0

Laser 128 please help

by bob099＠centurytel.net

thanks for the help, now to find a dos disk, 3.3 or pro

20 years, 1 month

1
0
0 0

Troubleshooting video

by compoobah＠valleyimplants.com

Pat wrote >You do realize that the "stuff" we talk about on classiccmp are usually things >that aren't PC's, right? Yep, that's why I posted here :-) - it's a SGI IRIS 3130 68020-based Multibus machine. I'm sorry that I gave the impression it was a PC, I was just trying to not scare off anyone who hasn't ever worked with one of these beasts but who knows about computer video/graphics systems. I did pull some numbers from the XF86 PC modeslist to see if what I was seeing was close to "normal", it didn't seem to be. Jules wrote >I suppose it's just possible that you could do interlaced 1024x768 with a >28KHz signal, but it'd be hell on the eyes. Possibly that's the SGI's default >though if it can't detect what monitor you're plugging into it? (scratch that >idea if the outputs are BNC, but if the video's done over some form of >multi-pin connector, might it not need strapping in a certain way to indicate >display type?) The monitor connection is 4BNC. I wasn't sure about the interlaced - it seemed that mathematically it should be 24 KHz (48/2), but if 28KHz could be it, I'll look again. There's a switch that's supposed to select interlaced/non interlaced. I guess next stop is to check if that's being read properly, since flipping it doesn't seem to make a difference. I'll also try to find the crystal oscillator (thanks, Tony), perhaps it's on the Update Controller? I think the interlacing must be for linking it up with a TV system, since the monitor can't do 30Hz interlaced. Standard refresh is 60Hz (per the IRIS FAQ)

20 years, 1 month

2
1
0 0

System 36 available (Keele uni, UK)

by julesrichardsonuk＠yahoo.co.uk

Afraid I know of no details on this one - other than a rough location (Keele uni, or at least that's where the chap who has it works), contact number, and that any rescue is fairly urgent - it's heading into a skip rather soon. If there's likely to be any interest, do shout - I can always phone the guy and get more details. cheers Jules

20 years, 1 month

1
0
0 0

(no subject)

by roger.holmes＠microspot.co.uk

I am subscribed to the digests of the on topic posts. Sometimes I see follow ups to items which did sound interesting. Are the on and off topic digests swapped? Roger Holmes.

20 years, 1 month

1
0
0 0

crosscheck MK4564 DRAM against 4164?

by lee＠geekdot.com

> Could some kind soul crosscheck an MK4564-25IRL DRAM against a > D4164-2 for me? Everything I have says they are interchangeable. Lee.

20 years, 1 month

2
1
0 0

IC pin corrosion

by lee＠geekdot.com

> and about half the ICs in it are leaving some of their pins behind > when removed from sockets as they've corroded right through :-( This is not uncommon, I've seen it frequently on control systems that have all socketed ICs. It seems to occur most in the sockets that have one sprung leaf pressing against a flat side like this \| but also in other types where the socket contacts the pin surface. All these systems had been in constant use for more than twenty years. There were cases where we were getting intermittent errors reported and on pulling the cards we found at least one IC on each board with pins detatched. Hard plated pins, such as TI 74xx series seemed to suffer most with tin plated steel suffering the least. Lee.

20 years, 1 month

2
1
0 0

Cyril Yansouni?

by evan＠snarc.net

Anybody know where Cyril Yansouni is these days? He's the former chairman of Read-Rite.

20 years, 1 month

1
1
0 0

crosscheck MK4564 DRAM against 4164?

by julesrichardsonuk＠yahoo.co.uk

Could some kind soul crosscheck an MK4564-25IRL DRAM against a D4164-2 for me? I suspect that I can replace the former with the latter, but the various datasheet archives on the 'net are being spectacularly unhelpful in providing a spec sheet for the 4564's :-( I'm expecting that they're exactly the same pinout and organisation, and that the 4564-25's are 250ns parts and the 4164-2's are 200ns parts, so they're a drop-in replacement, but it'd be handy if someone can confirm that! Worst-case I can pull some 4564's off a spare board, but I'd rather use the box of 4164's that I have if they'll fit... cheers J. -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

20 years, 1 month

1
0
0 0

Anyone have a Teleram T-3000?

by evan＠snarc.net

It's a Z80 portable computer from 1982. I'm looking to buy or trade for one.

20 years, 1 month

1
0
0 0

Mac Performa needs home

by mtapley＠swri.edu

All, See below (read from the bottom, sorry for the mixed top/bottom posting. Sherry Fawcett (sfawcett at maine.rr.com) in Maine has a Performa that needs a new home. Suggestions welcome, please contact her directly. >At 18:44 -0400 7/14/06, sherrill fawcett wrote: >>Hi Mark - Thank you so much. I don't mind your putting the info out at all. >> >>Sherry >>On Friday, July 14, 2006, at 02:39 PM, Mark Tapley wrote: >> >>>Not immediately, but I am on a mailing list of classic computer >>>collectors. If you don't mind my posting your contact info to the >>>list, I'll be happy to forward your offer there, and either >>>someone on the list or someone known by someone on the list is >>>likely to speak for it. >Hi - I have a Performa (about 1994) that works fine, but I have no >room for it. I don't want to throw it away - would just like to >give it to someone. I'm in Maine. Do you know of anyone in my area >who might be interested? > >Sherry Fawcett -- - Mark Cell Phone: 210-379-4635 office: 210-522-6025

20 years, 1 month

1
0
0 0

Laser 128 please help

by compoobah＠valleyimplants.com

The Laser is a pretty perfect clone of the //c. I have no idea what they shipped with, but in elementary school we had them for half the lab. We just used standard DOS 3.3 or ProDOS disks in them when we needed the O/S. They have (AFAIK) the AppleSoft(like) basic in ROM (there may be some cross-polination with the IIgs machines that started trickling in and I used for more serious programming), so you can throw on one of the serial image download programs.

20 years, 1 month

1
0
0 0

Shipping a Diablo Model 31 disk drive

by wmaddox＠pacbell.net

I am having a Diablo 31 disk drive shipped to me. Can anyone advise on how to prepare one of these for shipment, for example, locking the head actuator? Thanks, --Bill

20 years, 1 month

1
0
0 0

Superbrain CRTC ROM board?

by julesrichardsonuk＠yahoo.co.uk

Hi, I've got a Superbrain here with a little ROM carrier board plugged into the CRTC chip socket on the Superbrain main board. The carrier board then contains a TMS2516 EPROM, the CRT8002B IC, and a 74LS08 chip. Is this something that someone's come across before? Looking at the ROM contents it looks likely to be a character table. Ideally what I'd like to do though is take the board out completely and put the CRTC chip directly back in the socket on the Superbrain's system board, as the carrier board's right in the way of some of the ICs I need access to in order to diagnose the fault with the system... cheers Jules -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

20 years, 1 month

1
0
0 0

chain printer speed?

by julesrichardsonuk＠yahoo.co.uk

Topic came up on a local newsgroup - anyone know what the typical speed of a chain printer was/is? I can't find any hard figures online - all the info about chain printers seems to just say they were "high speed" and that's it. Just curious! cheers Jules

20 years, 1 month

7
14
0 0

TRS-80 PT-210 printing terminal interfacing

by dgriffi＠cs.csubak.edu

I have a PT-210 printing terminal from Radio Shack. There's a slot for an rs232 serial connector adapter. Does anyone know anything about this adapter such that I can build one myself? How about schematics? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

20 years, 1 month

1
0
0 0

OT but surprising (although not really) - SGI

by compoobah＠valleyimplants.com

Am I reading their announcements right (https://support.sgi.com/login) that they are dropping not only MIPS but also all graphics systems (incl. Prism)? I guess it makes sense from a business standpoint - anybody can make an Itanium with a ATI graphics card, and VPro was a bit long in the tooth - but it's still a bit of a shock.

20 years, 1 month

1
0
0 0

Does anyone on the list have an ISOs or pointers to ISOs for a "New Internet Computer" (NIC)?

by ethan.dicks＠gmail.com

It's not quite 10 years old, but it's off-the-wall enough, I think, to fit in here. I have a NiC that I got when they were new. It's great, but somewhat orphaned. For those that don't know, it was a dictionary-sized Intel box, notable for its lack of a hard drive. Larry Ellison (of Oracle fame) intended it to be an Internet Appliance and Windows Killer. The company sold a number of the machines, but never made a big splash. They folded a few years ago, and took things like their Yahoo Group with them. What I'm specifically after was an ISO that someone came up with that would boot the NiC, then run entirely out of a RAM disk, allowing you to mount different CDs of music as a jukebox. I have a project I'd like to do and I think that would make a good starting point. I've been googling for NiC and disk images and such for a while and can't even find any of the once-available standard boot images for the NiC, let alone anything a little bit custom. Thanks for any tips. -ethan

20 years, 1 month

1
0
0 0

IEM-4400 (was Documentation for HP Nighthawk 20mb drive)

by vp＠drexel.edu

"Joe R." <rigdonj at cfl.rr.com> wrote: > Do you have ANY docs for the IEM dirve? I have several of their units > and I'd like to find out more about them. alas nothing. I have asked on this list before for any info on this thing, but I got no answers. **vp

20 years, 1 month

1
0
0 0

Laser 128 please help

by bob099＠centurytel.net

I picked up a Laser 128 at a flea market for $5. Got it home hooked up to video in port on tv, it booted a disc I didn't even know it had, a childrens spelling game. I have just exhausted my knowledge of the Laser and Apples in general, where can I go for more information? Anyway to create a system disc, without access to an Apple? Google provides an embaressment of sources about apple but much less about Laser.

20 years, 1 month

1
0
0 0

keyboard cleaning

by chrism3667＠yahoo.com

no wd-40 isnt a good lubricant (for certain tasks at least) but it is supposed to be a penetrant. I had thought that a subsequent wash of alcohol would remove *it*. Im contemplating submersing it in a watered down sudsy ammonia solution. Sudsy or probably even strait ammonia is the BEST stuph that Ive seen for getting at hidden crud, even better then acetone. You have to soak it for a day or 2 though. But it reacts with copper so Im concerned. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

5
5
0 0

*early* Domain OS available? ---> 8" floppy with Imagedisk

by kelly＠catcorner.org

> I've used a Shugart 801R with Imagedisk, and it works very nicely. I > laid out a small pcb to simplify the connections and could have more > made up if there were any interest. I would be interested. My wiring of the adapters looks like a bird's nest, but not wuite as organized. I did by an fdadap, but I could use some more adapters. What do you do for DS/SS sensing? I ended up using a small toggle switch. I use Tandon 848 double sided drives with imagedisk. They work very well, you just have to keep the heads clean. > > Dave Dunfield was invaluable in helping me work thru issues getting > single density to work properly. I ended up with an Adaptec ISA scsi > adapter card for the floppy controller which works well (it's > a 1522a). I can't say enough good things about Mr. Dunfield nor ImageDisk. I have made images of Tandy 2000 QD 5.25" disks, Tandy mixed density 8" disks, and PC compatible disks. What ImageDisk can't handle I save for the catweasel. Kelly

20 years, 1 month

4
5
0 0

Documentation for HP Nighthawk 20mb drive

by vp＠drexel.edu

ard at p850ug1.demon.co.uk (Tony Duell) wrote: > [...] it should be possible to make, say, a module with an HPIB port on > one side and SCSI on the other. It would respond to CS/80 or SS/80, and > talk to a normal SCSI drive. I am suprised nothing like this exists [...] Actually the IEM-4400 has a SCSI DAT tape drive and a board to interface it to HP-IB. I wonder if that board can be made to connect a SCSI *disk* to HPIB (probably need a new ROM though which will make the project more expensive than building everything from scratch). Regarding the HP Nighthawk drive I have one too (it was inside a 9153A box). When I bought the 9153A I assumed I'd find a standard drive inside (disappointed...). Once I saw the custom drive I decided not to bother with that drive (no way of repairing it, or recovering data stored on it). Unfortunately I was proven right, as the drive gave up the ghost. The Nighthawk drive now shorts the power supply. If you remove the hard disk, the 9153A powers up, but with the drive connected, nothing comes on, and a resistor on the drive begins to smell! :-( **vp

20 years, 1 month

3
2
0 0

Troubleshooting video

by compoobah＠valleyimplants.com

I'm not looking for a potted answer here - just ideas for where to look. Is ~28KHz a common HSYNC frequency? seems too low for anything I've seen. What else should I look at for a non-syncing monitor? USENET seems to indicate 48.8 KHz HSYNC on these old SGI monitors (SGI employee posting), so I'm not sure where the ~28 KHz is coming from- is this crystal or RC controlled? There are about 9 boards in the graphics half, I suppose sync is generated on the last one (in this case the DC4 display controller) - no crystals there. Common failure on old framebuffers? any tips? tony?

20 years, 1 month

3
2
0 0

Troubleshooting video

by chrism3667＠yahoo.com

here we go. No I wasnt aware of a ban on pc-talk here. And my point was 28kc is below even the hscan of comparitively low-res vga. --- cctalk-bounces at classiccmp.org <pat at computer-refuge.org> wrote: > On Sunday 16 July 2006 13:03, Chris M wrote: > > no, 28khz is not what you *should* be seeing. The > > original vga fixed frequency stuph ran at 31.5kc. > > Scott said: > > these old SGI monitors > and > > There are about 9 boards in the graphics half > > I don't know of any VGA controller that had 9 boards in it (or was designed to > hook to an old SGI monitor)... > > You do realize that the "stuff" we talk about on classiccmp are usually things > that aren't PC's, right? > > Pat > -- > Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ > The Computer Refuge --- http://computer-refuge.org __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

2
1
0 0

keyboard cleaning

by chrism3667＠yahoo.com

the keyboard is for a NEC APC III. Some keys are intermittentsometimes. Other times theyre not. :D. I think Ill try soapy water and a splash of ammonia. Shaken not stirred. Next question - how does one scope out an 8048s code without enlisting the services of a soldering iron? I wouldnt be all that adverse to cutting a few traces. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

2
1
0 0

*early* Domain OS available? ---> 8" floppy with Imagedisk

by kelly＠catcorner.org

> From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org]On Behalf Of Chuck Guzis >> On 7/15/2006 at 3:09 PM Fred Cisin wrote: >> > >GCR > >MFM without WD/IBM sector headers (Amiga) > >certain address marks > >with some FDC's FM > >with some FDC's 128 byte sectors > >damaged disks (both accidents and some copy protection) > > Also: > > Hard-sectored > "Strange" recording methods (e.g. OSI) > > --Chuck > Fred and Chuck seem to sum it up quite nicely. The "image" programs like teledisk and imagedisk are very limited in what they can image. What they do, they do very well, but they rely on a WD or WD emulated chip in the floppy control circuit. Since the current copyright standing of teledisk is not known to me, but that of imagedisk is, for these quick and dirty copies, I rely on ImageDisk. If I find images in teledisk, I write them out to physical media and re-read them into ImageDisk files. The catweasel does not rely on the WD style controllers. It can handle the "funny" address marks, hard sector disks, GCR, read and write FM formats reliably, and has a host of options for dealing with damaged disks. Just my $0.02... Kelly

20 years, 1 month

1
0
0 0

Troubleshooting video

by chrism3667＠yahoo.com

no, 28khz is not what you *should* be seeing. The original vga fixed frequency stuph ran at 31.5kc. --- cctalk-bounces at classiccmp.org <julesrichardsonuk at yahoo.co.uk> wrote: > Scott Quinn wrote: > > > > I'm not looking for a potted answer here - just ideas for where to look. Is ~28KHz a > > common HSYNC frequency? seems too low for anything I've seen. > > Hmm, I'd expect an SGI (or similar machine of its class) to be attempting > 1024x768 at 60Hz non-interlaced minimum, so hsync somewhere around 50KHz. > > > What else should I look at for a non-syncing monitor? > > Is it the monitor or the machine? For a monitor test I'd throw it on any old > PC and see what I could get out of it (wire up a sync combiner if the monitor > needs csync; easy to do) > > > USENET seems to indicate 48.8 KHz HSYNC on these old SGI monitors (SGI employee posting), > > Plausible, anyway. > > I suppose it's just possible that you could do interlaced 1024x768 with a > 28KHz signal, but it'd be hell on the eyes. Possibly that's the SGI's default > though if it can't detect what monitor you're plugging into it? (scratch that > idea if the outputs are BNC, but if the video's done over some form of > multi-pin connector, might it not need strapping in a certain way to indicate > display type?) > > cheers > > Jules > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

20 years, 1 month

2
1
0 0

HP 2621B terminal available

by bobalan＠sbcglobal.net

I have an HP 2621B terminal WITHOUT the keyboard free to anyone who wants it. It does power on but displayed characters (it has a menu at the bottom of the screen) are dim and a little out of focus. Bob

20 years, 1 month

1
0
0 0

Need pointers on Oscilloscopes

by ISC277＠CLCILLINOIS.EDU

Hi all, I'm going to go to a hamfest this weekend to look for an oscilloscope. Do you guys have any pointers on what to look for, and how to know if what I'm looking at has problems? Any advice would be appreciated. Thanks! Julian

20 years, 1 month

12
32
0 0

OT: WD40, was: keyboard cleaning

by compoobah＠valleyimplants.com

> "White spirit, also known as Stoddard solvent is a paraffin-derived clear, >transparent liquid which is a common organic solvent used in painting and >decorating. It is a mixture of saturated aliphatic and alicyclic C7 to C12 >hydrocarbons with a maximum content of 25% of C7 to C12 alkyl aromatic >hydrocarbons." > >So, basically a close relative to paint thinner, right? Is paint thinner (mineral spirits, whatever you want to call it . . .)

20 years, 1 month

1
0
0 0

VSXXX mouse compatibility

by compoobah＠valleyimplants.com

Jan-Benedict Glaw wrote > I've written the Linux driver for this mouse >and its protocol is not compatible with anything else. So if you want >to use such a mouse on eg. a PeeCee, you either need to write a proper >driver for it (if the operating system doesn't have one), or put a >microcontroller in between for protocol conversion to PS2. So is there some big cache of these things (other than the $80 e-bay ones)? everyone seems to assume that people want to use the VSXXX on a PC, not get a mouse for their DEC. I guess it's back to using an X-terminal- won't have to get the 15-pin breakout cable then either. Idle speculation- I wonder which mouse is closest for conversion purposes (definitely not HP-HIL, perhaps Sun or old SGI?)

20 years, 1 month

3
6
0 0

CBM PET 2001 restoration tips?

by pete＠dunnington.plus.com

On Jul 15 2006, 13:35, Ethan Dicks wrote: > On 7/15/06, Jules Richardson <julesrichardsonuk at yahoo.co.uk> wrote: > > Just going through the motions of reseating chips (again - tried once, but > > doesn't hurt to do it a second time!) > > Doesn't hurt, but if the sockets themselves are a problem, won't do much good. > > > Does anyone have a photo, PCB layout, or access to a real board so that they > > can check ROM chip locations for me? > > Alas, no... there's a lot of stuff on zimmers.net (what was formerly > on funet.fi), but I no longer have a static PET... sold it years ago. > > > Date codes are all in 1978, so presumably I'm looking at a first issue of the > > ROMs? > I would say so. BASIC 2 for the newer PETs came out around 1978/1979, > ISTR; with the upgrade following on its heels. The only way to be > sure is the part numbers, though (which, I think, have already been > correctly identified by another list member). Yes, Jules' machine has the first issue. It sounds like he has almost exactly the same version of machine as I do; mine has the same MPS6540 ROMs and MPS6550 RAMs. Except for the dead ones that I've replaced, that is: many of those old MOS Technology chips are dying of old age, and I've replaced three RAM chips in my PET in the last two years. -- Pete Peter Turnbull Network Manager University of York

20 years, 1 month

3
2
0 0

Merging drives under VAX/VMS V5.5?

by healyzh＠aracnet.com

I'm looking to merge a couple of RZ29's down to a single RZ28 (everything will fit). Does anyone have any advice? Basically I'm trying to downgrade a VAXstation 4000/vlc from a BA350 with 3 7200RPM RZ29's (user disk is a shadowset) to a single 5400RPM RZ28 that I'll put in an external enclosure after pulling it from the SBB brick. The BA350 and 3 RZ29's generate a *lot* of heat. I've done plenty of migrations to larger disks using BACKUP/IMAGE, but have never tried to combine separate disks onto a single disk. I would think that the following would work, but it doesn't preserve the ownership of the directories and files (at least under 5.5). BACKUP DSA1:[GU*...]*.*;* [...]/VERIFY/LIST Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

20 years, 1 month

1
1
0 0

VSXXX mouse compatibility

by compoobah＠valleyimplants.com

I know this is a long shot, but does anyone know if the DEC VSXXX mouse (VAXstation/early AXP) signaling protocol is shared by anything else (Sun mice, for instance). I've got the LKA, so all I need is a mouse substitute.

20 years, 1 month

3
2
0 0

ADM-3A+ Someone looking for one?

by jcwren＠jcwren.com

I see to recall that someone was looking for an ADM-3A a short time ago. I have an ADM-3A+ that is clean, except for a crack in the top casing just to the left of the keyboard. Video is bright and pretty crisp. I also have a ADM-5 logic board, condition unknown. If whomever it was is still looking for a ADM-3A, and a plus model is acceptable, please contact me off-list at jcwren at jcwren.com --jc

20 years, 1 month

1
0
0 0

CMB PET 2001 restoration tips?

by julesrichardsonuk＠yahoo.co.uk

Just in case there are any! I picked up our first blue-faced PET 2001 last night (we've got a couple of the black-faced ones already), but it's cosmetically in a bit of a state after living in someone's garage for years. I know almost nothing about these machines - are there any particular gotchas about restoring them (like, "don't touch this bit as all the paint will fall off") other than the usual stuff that applies to bringing up a new toy for the first time? The logic board *looks* healthy enough - it seems to have escaped the corrosion that's got bits of the case. Isn't there a particular chip (or several) that's prone to dying in PETs though? Remains to be seen if it'll power up. What's software availability like? Any archives of tape data on the 'net anywhere? (Diags would be great, games would be fun later on :-) cheers Jules -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination.

20 years, 1 month

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Pinouts for a Nanao CRT model MG-550CDM?

by ethan.dicks＠gmail.com

I have a small (5"?) panel-mount CRT here I'm trying to fire up. The label on the top suggests that it's made by Nanao and is a model MG-550CDM. Google turned up a hit or two, but no real information. The PCB has a 10-pin single-sided edge-connector, visually similar to the style Commodore used on PETs and C-64s. There are two connectors on the back of the chassis - an RCA, clearly NTSC video in, and a 2x3 molex connector, obviously power and perhaps some additional control. This came out of some piece of radio comms gear, if that helps place its context. >From what I can tell from cursory inspection, pins 1 and 10 are ground, 5 and 9 appear to be no connect, 8 is NTSC in, 7 seems to be AC in (can't identify AC return...), and 2, 3, 4, and 6 disappear into the bowels of the circuitry. If I'm lucky, there is some sort of industry convention in play here. Does this arrangement ring any bells with anyone? Thanks, -ethan

20 years, 1 month

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VCF/Midwest - Stuff I am bringing

by Mzthompson＠aol.com

Here's a partial list of stuff I am bringing to VCF/Midwest. A pair of NeXT Turbo Slabs (consecutive serial numbers) complete with monitors, printers, kybds, mice, cables, documentation and OS CDROM. Also some spare NeXT keyboards, mice, cables and some unopened software. IBM 5150, 5160, and an AT; a couple SGI boxes; an IBM RS6000 (/250 I think); and a Tandy 1000. If still room in the car then some DECstations and associated stuff. Mike Thompson

20 years, 1 month

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Fans in VAXstation 4000/vlc

by healyzh＠aracnet.com

Does anyone have any experience in replacing the fans in a VAXstation 4000/vlc? I think the bearings in my system are going out. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

20 years, 1 month

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Documentation for HP Nighthawk 20mb drive

by bob＠jfcl.com

>drive and/or the 9153 on hpmuseum.net, Bingo, that's the one. I have the 9153C, which is one of these funky drives inside an enclosure with a GPIB interface. It looks like at least some of the documentation has been restored to hpmuseum.net. To make the story short, my drive is dead and replacement drives seem to go for absolutely amazing amounts of money, so I was toying with the idea of hacking up some kind of replacement for it. The next question is, what's the "SS/80 Command Set" ? Thanks, Bob

20 years, 1 month

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VCF/Midwest Final Announcement -- this coming saturday

by pat＠computer-refuge.org

As it happens, we now have a speaker for VCF/Midwest. Jack Rubin is going to talk about his 50 years of computing experience in a talk titled "Still an enduser after all these years." So please join us for that this Saturday, at 12pm. Maps, directions, etc. are available from the website at: http://www.vintage.org/2006/midwest/ Note that the times listed there are wrong; the event will start at 12pm with Jack's talk, and the exhibits and marketplace will be open from 1pm until 6pm. Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

20 years, 1 month

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The Internal HSD05-AA is working

by compoobah＠valleyimplants.com

The sleds I used were cut from sheets of plexiglas to fit snugly in the rails. I drilled 4 holes through the bottom to support a 3.5" ff drive. Tempered Masonite hardboard could also be used, and then you wouldn't have to have static buildup precautions. Metal sheets with retention brackets would be nicer, but I was going for quick and cheap (materials on-hand) With 1" drives, you can mount 2 in each BA4x0 drive bay, one per "sled" per guide. As before, I don't know how much power can be safely taken of of one drive sled connector, but I have the TK70, HSD05 and one 1/3 ht Seagate Barracuda 4GB drive working off of one sled with no trouble (haven't actually used the TK70 yet, no tapes, but it's plugged in and everything seems cool).

20 years, 1 month

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troubleshooting video

by compoobah＠valleyimplants.com

I have an IRIS that I've been working on off-and-on for a while. I'm currently looking into the graphics circuitry. For a while, when I had it connected to the SGI monitor it displayed a garbled version of what I assume was the PROM monitor (pixels/lines were skewed across the screen back-and-forth). I assumed that it was a video mode problem, checked the switches, and put it back on - nothing. Then I tried a Sun multisync, and it switched into its "I don't know what to make of this input signal" flashing-light mode. Checked switches again, tried with BPRN and BPRO jumpers in, tried again with BPRN/BPRO back out. Put the scope on the IRIS sync output, compared it with a Sun 3/110 CG4 output. (thought it might be a sync issue) The most common regular waveform (I assume it's HSYNC) is ~28KHz on the IRIS and 61.72 KHz on the Sun (measured with the DSO's cursor function - digital scopes are trancendentally cool!) The Sun's sync is similar to published for 1152x900, the SGIs is not quite what was expected for "Mode 1" on the IP2 (for either primary monitor or secondary monitor back-panel setting) Primary is supposed to be 60Hz non-interlaced, secondary should be 33Hz interlaced (no HSYNC given)

20 years, 1 month

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StorageTek Silos

by browe58＠comcast.net

I have a client in Ohio looking to get rid of (3) StorageTek Silos. Are these things worth anything? If not, it's ALL yours! You'll just have to dismantle and remove it your self. Anyone interested? Thanx. Bill 603-512-7826

20 years, 1 month

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72XX, 73XX, and 74XX logic boards

by tshoppa＠wmata.com

Tom Uban wrote: > I have a friend who is cleaning out his basement and has > some boards which have a number of 72XX, 73XX, and 74XX > parts on them. I'm not familiar with the 72 and 73, but > I'm guessing they are unobtainium at this point. Most likely they are date codes, especially if "XX" is never greater than 52 :-). There are some signetics and TI and NatSemi line driver/receiver parts with 72xx and 73xx part numbers, though. Tim.

20 years, 1 month

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looking for a vax

by edwin_rhodes＠hotmail.com

hey guys i am looking for a vax to run vms on, any out there? ed. Creation is only a sheer act of will. Edwin.

20 years, 1 month

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Friden electro-mechanical calculator

by PETERSB＠airproducts.com

I saw that some time ago you have a Friden electro-mechanical calculator available. Is it still available? Thanks

20 years, 1 month

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what are these chips?

by rtellason＠gmail.com

Got a bunch of these parts, marked "8041016A" and with a Tandy logo (?), one site listed them as DRAM, but does anybody know what they are? 16kx1, 4kx1? Something else? -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

20 years, 1 month

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72XX, 73XX, and 74XX logic boards

by uban＠ubanproductions.com

I have a friend who is cleaning out his basement and has some boards which have a number of 72XX, 73XX, and 74XX parts on them. I'm not familiar with the 72 and 73, but I'm guessing they are unobtainium at this point. If someone is interested in these, they are available for the cost of shipping... --tom

20 years, 1 month

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Documentation for HP Nighthawk 20mb drive

by kelly＠catcorner.org

> Does anybody have any documentation for the HP Nighthawk 20mb drive? Do you mean the "kittyhawk"? It was a mini IDE, similar to today's 2.5" laptop HD. If you mean something else, ignore the reset of this message. > It'sgot a custom 40 pin interface that's neither IDE, SCSI nor ST506. Even a > pin out would be helpful, and a manual would be wonderful! If it was a mini 40 pin, then it is PROBABLY IDE. See: http://www.homebrewcpu.com/hp_kittyhawk_1_3_microdrive.htm for reference I quote: The Kittyhawk can be used via a 2.5" IDE cable adapter (commonly used to adapt notebook hard drives to desktop systems). There is a significant warning, though. You MUST NOT plug the drive in backwards. Modern drives can typically survive being put in backwards. The Kittyhawk, though, will not. If you plug it in backwards, it will be destroyed. Not the warning too. Don't plug it in wrong!

20 years, 1 month

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Documentation for HP Nighthawk 20mb drive

by bob＠jfcl.com

> The next question is, what's the "SS/80 Command Set" ? Sorry, I misunderstood. It looks like SS/80 is the HPIB command set used by the 9153, and not the actual interface to the drive itself. The only document which seems to talk about the actual drive is this one http://www.hpmuseum.net/document.php?hwfile=2723 And sadly it's a bit light on any details. ob

20 years, 1 month

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Cromemco Dazzler board set + docs available

by jcwren＠jcwren.com

I'm starting the process of clearing out my basement. Right now, an item of interest to some may be a Cromemco Dazzler board set I have on eBay, auction 220006408118. Also available is a Digital Research CP/M Gold Card for the Apple II and IIe (220006405859), NIB. --jc

20 years, 1 month

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Documentation for HP Nighthawk 20mb drive

by bob＠jfcl.com

Does anybody have any documentation for the HP Nighthawk 20mb drive? It's got a custom 40 pin interface that's neither IDE, SCSI nor ST506. Even a pin out would be helpful, and a manual would be wonderful! Thanks, Bob Armstrong

20 years, 1 month

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