test-drb September 2010

test-drb@ccmp.vtda.org

163 participants
222 discussions

I know this isn't particularly old yet...

by rescue＠hawkmountain.net

I'm looking for guide rails for the 5.25" drive bays for Chenbro cases (many use the same rails, mine is an SR20969 case.... I rescued this system from being recycled (2 dual core Opterons), however it is missing the front plastics and the guide rails.... You can find a p/n and buy the front plastic... but I can't find a part number for these rails (seems a shame to scrap a decent chassis over lack of device guide rails). Sorry this isn't a classic box... but I'm not having any luck finding these and was hoping maybe someone out there has something in there local scrap pile.... -- Curt

13 years, 8 months

VCF Midwest - follow us online

by silent700＠gmail.com

I hear all kids these days are using the Twitters, so I went and set up an account for VCF Midwest. Those not able to make it can enjoy some "live tweeting" of the, er, "action" and attendees can get last-minute updates on setup times and other logistical issues. So if you're a Twitterererer, point your device our way: http://twitter.com/vcfmidwest Folks of the more old-school persuasion can also join us on IRC at #vcfmw on the freenode servers. Hope to see everyone there! -- jht vcfmw.org chiclassiccomp.org

13 years, 8 months

S-100 Serial I/O options

by derschjo＠mail.msu.edu

Hi all -- I am one step closer to having a "useful" IMSAI 8080; thanks to a kind listmember I now have more spare 2147s than I know what to do with, and have used them to repopulate my 32K static RAM board. That brings me up to 48K of working RAM, which seems like more than enough to play with. Now I'd like to get the IMSAI talking to the world. Or at least a terminal. (Gotta start somewhere.) Were there ever any standards for serial I/O in the IMSAI/Altair/S-100 world (ports, interrupt settings, etc)? I have an IMSAI MIO board that I'd like to use. It has more configuration options than one can shake a stick at, and the (185 page) manual makes mention of several port address configurations, referring to them as "IMSAI SIO," "Processor Tech 3P+S," "Altair SIO." Did one of these emerge as a de facto standard at any point? My _eventual_ goal is to run CP/M at which point (hopefully) I assemble a CBIOS for whatever serial configuration I end up with and it's all taken care of; for now I'd be happy to get some paper-tape software to run. (Altair BASIC might be nice.) So I'm trying to work out a serial configuration that will work with a fair amount of archived software -- what would you recommend? Is the MIO board a decent serial board, or should I find something else? Thanks as always, Josh

13 years, 8 months

Lobo Drives Manual on Craigslist

by marvin＠west.net

I'd pick it up except I've got a number of copies, so hopefully someone on the list needs the manual. http://ventura.craigslist.org/for/1917697039.html

13 years, 8 months

Looking for TI SN75413 pin layout

by fjkraan＠xs4all.nl

Does anyone have some info in the Texas Instruments SN75413 ? I am trying to restore the front panel controls of an early Tandy Radio Shack hard disk (8 MByte!), but cannot find this chip info. The reverse engineered diagram is at http://www.xs4all.nl/~fjkraan/comp/trs80m2/driverboard.png, but as I do not have the pin functions, I cannot connect the lamp and switch part (this bit is missing) to the board. There is some info on Radio Shack hard disks online, but not for this old model. For some more context of the board see http://www.xs4all.nl/~fjkraan/comp/trs80m2/8megDisk.html. Fred Jan

13 years, 8 months

documentation needed - AMD LabPro/Digelec PLD programmer

by jack.rubin＠ameritech.net

A recent hamfest yielded a beautiful AMD LabPro Digelec PLD programmer, along with PALASM software and several pounds of programmable devices. The only thing lacking are docs for operating the programmer. It's reasonably self explanatory in local mode but I'd like to figure out how to connect with a PC to allow file transfers to and from the device. Anybody have the docs or experience with this device? Thanks, Jack

13 years, 8 months

MINC-11 (was Re: Collection reduction, part II the sequel)

by ethan.dicks＠gmail.com

On 9/2/10, Dave McGuire <mcguire at neurotica.com> wrote: > A MINC is a lot more than just a PDP-11! While that's certainly true, has anyone on the list ever done anything with the Lab I/O stuff on a MINC? I got one years ago with all the docs and software (everything, really, except for the cart, which the lab kept for something else). Mine only has one or two modules - a clock board and one of the input boards (I'd have to check the exact types), but since I didn't have much, I've only ever booted RT-11 and noodled around on the VT105. ISTR the CPU bay is stuffed with a KDF-11, 256K of memory, an RXV21, a DLV11J, and an IBV11. Over the years, I've been given plenty of Qbus parts, but I've never run across any loose MINC modules. I'm curious if anyone else ever got a MINC loaded enough to do something fun with it. -ethan

13 years, 8 months

Looking for assistance PDP 11/05 Console I/O

by billdeg＠degnanco.com

We have been working to establish some sort of I/O, preferably RS232 with a PDP 11/05 After spending many hours on the problem we came up empty. The computer itself appears to be OK, the continuity cards are in the right places, the core RAM works, simple test programs function properly. For example entering code from 177700: 000240 000777 the computer will set the lowest address bit to 0-1-0-1 continuously. The current configuration is M9970 M7260 M7261 M920/H214 G110 G231 Grant UNIBUS bridge M7856 Grant Grant We don't have a device for 20ma current loop-ing so we're trying to use the M7856 for RS232 communications. We're not sure what ports to use with the M7856 while a M9970 is also installed, does a conflict exist? We have found the following resources and worked through what info was provided there http://www.shiresoft.com/pdp-11/11-10/index.html http://www.pdp-11.nl/per...terface/dl11w-info.html http://www.bitsavers.org...-DL11W-OP-001_May77.pdf If anyone on this list can assist with diagnostic steps it would be greatly appreciated. For example an octal listing for a character echo program. Please contact me directly. We're not sure what port to use for RS232, the default teletype port seems to be 60. I think we're close, and it's also possible that there is a problem with the card. The switch settings appear to be OK. Thanks Bill Degnan

13 years, 8 months

Please help me identify this case

by brianlanning＠gmail.com

I've been looking for this case for years. And I stumbled upon it on ebay. Here's the listing. The price is also has some comedy value. http://cgi.ebay.com/AMAZING-VINTAGE-ONE-OWNER-ATARI-LOT-PRISTINE-MINT-/3602… I'm interested in the full heigh 5.25" case to the right in the photos with what looks like a floppy drive and a half height hard drive. Is there a name or model number for this case? And would anyone be willing to part with one? thanks. brian

13 years, 8 months

Collection reduction, part II the sequel

by binarydinosaurs＠gmail.com

Morning folks, Slightly less panic now, I almost accidentally fell over a house just half a mile away with enough storage and land for everything I already have that's less money than I'm currently paying - result! I'm still going to try and shift the vast majority of the DEC stuff though, particularly since the terms of the let on the new place are only for 2 years then I have to move again. I now have a chance to find related software etc for those of you who've asked for machines and bits and attempt to ebay the rest. I'm guessing there's no interest at all in my Grey Wall given the online availability of docs and CDs etc, I've dragged it all between houses for 10 years now, maybe it's time to hit the recycler and give some of those trees back :) I've also found 3 more DEC monitors - VRT21 (heavy trinitron model) plus a 17" and 21" workstation monitor, can't remember its designator but it has all the BNC connectors (r/g/b/h/v) and VGA inputs. I also doubt I'll ever do anything with most of the big TRS80 stuff on my Tandy page (http://www.binarydinosaurs.co.uk/Museum/Tandy/) like the model 2/3/4 and all-in-one model 1 (2nd one on the list - came with a LOT of books and docs). Any interest? I take it nobody wants the MINC-11? I'm not surprised to be honest though, it IS big. Cheers, -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? www.binarydinosaurs.co.uk

13 years, 8 months

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test-drb September 2010