test-drb October 2015

test-drb@ccmp.vtda.org

195 participants
329 discussions

by marc.verdiell＠gmail.com

I used John's routine to write and Chuck's to read an HP 1000 SIMH tape image, and the file diff came out identical, give or take a few end characters that I don't believe are part of the data. So you guys are essentially compatible as expected (16 bit machine it sure is). Marc From: Chuck Guzis <cclist at sydex.com> Subject: Re: Writing SCSI 9-Track Mag Tapes from Windows/DOS > On 10/06/2015 11:54 AM, Rich Alderson wrote: > Of course, that's mostly true for those machines restricted to silly > octets as their native data representation. :-> And one finds odd-byte-sized records not infrequently in big iron--and then you have to ask "where do most half-inch 9-track tapes originate?" It ain't from DEC, for sure. FWIW, my routines don't bother to pad to an even byte boundary. --Chuck

9 years, 2 months

IBM terminals last call

by sales＠elecplus.com

Today they start getting cut up if no one responds. 3472 and 3477 terminals, keyboards, printers, etc. 12 pallets total. The terminals are coax. Maybe 100 of them. Keyboards are 122 key, prob abt 150 of them, most have cables. Some are RJ45 and some 5-pin DIN. Yes, you can go look, if you want 10 or more of something. No, he won't ship individual units. Located in WI. Email me off list if you seriously want to go buy. Cindy --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

9 years, 2 months

server for terminals

by sales＠elecplus.com

I did ask, and he said there is nothing labeled 360 or 390 or any server-looking cabinet, nor anything waist tall except the line printers, and nothing that looks like a computational device except the 3174-11R, of which there are 3. If there is something else to ask, please let me know. Cindy --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

9 years, 2 months

Looking for RX01/02 rack slides

by ball.of.john＠gmail.com

>> I actually need some slides for my RL02... Are these the same type? >Nope. DIGITAL designed their own chassis slides after the 11/34 >11/44, RLxx and everything after were custom. I think at that point there I'd wander down to the local computer recycling center, buy a set of suitable rails and mount a new set on with self-tapping screws once you checked your clearances. It's what I did to my 11/84, RA82 and Cipher drives. -John

9 years, 2 months

Manual for the Overland Data OD3201 Tape Drive?

by marc.verdiell＠gmail.com

>I've got a bunch of files that are Overland 32xx-related, but I don't >know if they'll be useful. I don't recall where I got them off the web, >but I'll be happy to forward them along. Probably close to 75MB worth. Thanks, I?ll gladly take all of it. Email away, or if you can share on a web folder such as a Dropbox I can grab it. Jim Cimmeri also sent me some relevant files, thanks Jim. >I don't care much for the Overland desktop drives, due to the chassis >being constructed largely of plastic. Mine might be a different drive. Tower model, pretty slick design. Seems well constructed, out of metal (I think!), no foam inside the door. And nice locking door too. Very silent, easy to load. Like this one on e-bay right now: http://www.ebay.com/itm/RARE-VINTAGE-OVERLAND-DATA-STORAGE-TRACK-DRIVE-MODE L-OD3201-/252096228767?hash=item3ab21b2d9f I like it better than my Qualstars. But then again, I haven?t yet met a 9-track tape I didn?t like ;-). My favorites so far are the 729 7-track tapes we have on the IBM 1401. Nothing beats a 1000 lbs, 112.5 inch/second vacuum column drive :-) ! I just posted a video about them acting up: https://www.youtube.com/watch?v=PwftXqJu8hs Marc > >Date: Mon, 5 Oct 2015 10:02:53 -0700 >From: Chuck Guzis <cclist at sydex.com> > >I've got a bunch of files that are Overland 32xx-related, but I don't >know if they'll be useful. I don't recall where I got them off the web, >but I'll be happy to forward them along. Probably close to 75MB worth. > >I don't care much for the Overland desktop drives, due to the chassis >being constructed largely of plastic. Watch out for the foam in the lid >too--it degrades with age and then develops air leaks and suddenly, you >can't load a tape. > >--Chuck >

9 years, 2 months

Spare Time Gizmos Life game LED tool

by dave＠661.org

I've acquired an unpopulated board for a Spare Time Gizmos Life game. Does anyone here who've made one still have an LED tool you don't need that you can pass along. How about a design file for making one myself? I tried asking this on the Spare Time Gizmos list and nobody replied. -- David Griffith dave at 661.org 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?

9 years, 2 months

Compaq Portable II - IDE compatibility (and setup disk image)

by jules.richardson99＠gmail.com

My Portable II uses a Miniscribe ST506/412 drive hooked up to a bridge board that I'm told is IDE at the other side, back to the controller. The original drive in my machine is toast - I had to pop the lid to free the spindle. It spins up now, and might cough up some data (for a while), so intention is two-fold: 1) Put the original drive and bridge board into a more modern system to attempt a read, 2) Replace the original drive/bridge combo with a more modern IDE drive (happy to waste 99% of the space on it...) Are there any gotchas involved to either of these, given that IDE was presumably in its infancy when the system was current, and so its possibly a slightly different animal to a more modern version? I don't want to fry the Compaq's controller, or the bridge board. In addition to this, the machine's lost its config, so currently defaults to a floppy boot. Does anyone happen to have an image of the 360K setup floppy, either in Imagedisk or raw format? (LLF is presumably 512 byte sectors, 9 sectors/track, and 40 tracks per side?) cheers Jules

9 years, 2 months

This is sad...

by jnc＠mercury.lcs.mit.edu

> From: Johnny Billquist > Which is a big reason I dislike eBay, people who chop computers and and > sell them in bits, and people who go on lists and ask "how much is this > worth?", since in many cases it's because they're trying to figure out > how much money they can make > ... > It's all just money... Well, I agree, sometimes the machine is disassmbled in a way that harms the components, or vital components are thrown away/re-cycled because 'they don't seem like they are useful/valuable' (case in point, cables - people save the boards, and throw away the cables - as a result of which, for many boards, we have more boards than we need, and no cables). On the other hand, if this stuff _wasn't_ worth money, most people would just re-cycle it, or pitch it. That would be better? Noel

9 years, 2 months

A VIC-20 IEEE Project

by silent700＠gmail.com

Some friends in the local 8-bit micro hobby have whipped up a clone of Commodore's VIC-1112 IEEE interface for the VIC-20 computer. The news has probably permeated most of the C= scene but I figured it was worth dropping here for maximum exposure. I saw the prototype working at VCF Midwest earlier this year. They're funding it through Kickstarter and have reached their goal, so production is sure to go ahead. You've got your choice of a DiY board, assembled board or a fully cased cartridge. Just over 60 hours to go: https://www.kickstarter.com/projects/1203958506/vic-20-ieee-interface -j

9 years, 2 months

Looking for RX01/02 rack slides

by charlesmorris800＠centurytel.net

Thinking I had an easy solution to the missing outer slide, I ordered a $40 pair of new heavy-duty rack slides from eBay. Beautiful pieces and ball-bearing slides, decent quality hardware too. Only had to drill a couple of holes in them so they'd match the drive chassis, mounted everything up, and then discovered that they were 1/4" too narrow, no matter how I arranged the brackets, and the drive wouldn't slide between the rack rails. Crap! So I bought two 24" pieces of 2 x 2 x 1/8" angle iron at the local steel place for a whopping $1.40, drilled four holes in each, sanded off the scale/surface rust, bolted them to the rack and slid the drive right in. You can't even see the "homemade" part unless you're really looking, too. Should've done that to start with. If I ever need to service the drive, I'll just slide it back out and set it on the bench... http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P09-29-15_19.… http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P09-29-15_19.… However, if anyone should stumble over a set of stock RX sliding rails I'd be interested for the sake of originality ;) Jay, let me know exactly what measurements you would need. There's a pretty good view of the inside rail on the second pic. thanks Charles

9 years, 2 months

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test-drb October 2015