test-drb February 2006

test-drb@ccmp.vtda.org

224 participants
452 discussions

by lee＠geekdot.com

It would seem that stussy is feeling a little pressured. http://www.britishinformation.com/forums/about1931.html What a shame. Lee.

18 years, 10 months

cctalk Digest, Vol 30, Issue 39

by dm561＠torfree.net

>Date: Tue, 14 Feb 2006 03:55:02 +0000 (GMT) >From: ard at p850ug1.demon.co.uk (Tony Duell) >Subject: Re: eBay Item Not Won: Vintage Digital DECWriter IV terminal, DEC, >> Does anyone have DEC lineprinters or other printers w/out keyboards in >> their collections? Pictures? >I've got at least one LA100 (receive-only) in my collection (and I think >a KSR one with a keyboard). >Externally these look like a DECwriter 4, but have redesigned internals, >with a printhead that's shiffted up and down mechancially to give twice >the verical resouliton (the NLQ font is printed in 2 passes, one with the >head in each posuition). >-tony --------------------------- Ah yes, that would be the Letterprinter 100 and the Letterwriter 100 respectively; I have a few of those myself awaiting a trip to the dumpster, as well as some parts & ribbons. Tony, I naturally assume you have the documentation set? That reminds me of a little story: when we converted our clients from Cromemco systems to PCs, we needed to convert the LA100s from Xon/Xoff to hardware handshaking. After several days of asking techs at DEC Canada and their reps and just getting unhelpful "can't be done" or "yeah, I think there's a jumper somewhere (but no one knew where)" replies, I finally called DEC US; when I asked the receptionist (those were the days!) for the tech department, she asked me what it was about. Figuring I was about to waste more time explaining the problem to someone who wasn't going to be any help, I nearly fell off my chair when she replied, "no problem, just run a jumper from pin 11 of IC27 to the pad beside pin such-and-such of IC so-and-so (the actual details are buried in my notes somewhere)". After I confessed and apologized for my sexist expectations and told her that she was probably the only person in North America who knew that, she laughed and admitted that a savvy engineer had happened to be standing beside her and overheard what she'd repeated. BTW, Tony, for someone as meticulous as you about some things, I'm surprised to see so many typos in your messages lately; is this a hardware or mushware problem, or none of my business? mike

18 years, 10 months

Anyone with an ATW800 (Transputer workstation)?

by dave04a＠dunfield.com

Does anyone on the list have an Atari ATW800 "Transputer Workstation"? Just acquired one - am bringing it up, and have a few questions... Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

18 years, 10 months

Replace 3.5" drives in HP9122D/HP9133H

by Glen.Heiberg＠gijima.com

I am wondering whether it is possible to replace the ailing Sony 3.5" disc drives in both my HP9122D and HP9133H HP-IB units with PC 3.5" drives? These are the older Sony 3/4 height units with separate data & power connectors, model OA-D32W-10 (double sided). The data connector has 26 pins. The power connector is standard 4 pin. I located the pin-outs for these drives on a Japanese site, and found that I could match all but 3 signals to a 'standard' 3.5" disc drive: SONY OA-D32W-10 STANDARD 1 Motor On -----> 10 /MOTEA - 0=Motor Enable Drive 0 2 Drive Select 0 -----> 14 /DRVSB - Drive Select 0 3 Disk Change -----> 34 /DSKCHG - 1=Disk Change/0=Ready 4 Drive Select 1 -----> 12 /DRVSB - Drive Select 1 5 Disk Change Reset -----> ???? 6 Direction Select -----> 18 /DIR - 0=Direction Select 7 GND -----> GND 8 Step -----> 20 /Step - 0=Head Step 9 GND -----> GND 10 Write Data -----> 22 /WDATE - Write Data 11 GND -----> GND 12 Write Gate -----> 24 /WGATE - Floppy Write Enable, 0=Write Gate 13 GND -----> GND 14 Head Read -----> ???? 15 GND -----> GND 16 Head Select -----> 32 /SIDE1 - 0=Head Select 17 GND -----> GND 18 Index -----> 8 /Index - 0=Index 19 GND -----> GND 20 Track 00 -----> 26 /TRK00 - 0=Track 00 21 GND -----> GND 22 Write Protected -----> 28 /WPT - 0=Write Protect 23 GND -----> GND 24 Read Data -----> 30 /RDATA - Read Data 25 GND -----> GND 26 Ready -----> ???? Is such a retro-fitting exercise possible? One possible problem could be the rotational speed; I know the Sony drives spun at 600rpm as opposed to the PC standard 300rpm... Any comments and/or suggestions about the feasibility, as well as matching the signals of pins 5, 14, and 26? Cheers Glen.

18 years, 10 months

Sirius 1 (aka Victor 9000) on Ebay (UK)

by chrism3667＠yahoo.com

I want one anyway. I WANT IT I WANT IT! Another minimum mode 8088 I seem to perceive. Used to think that amounted to an 8085, but its not limited to 64k. Chuckie also chose a non-conformist Hitachi crt controller. I ran across something else that used it the other day, but I forget what it was. --- cctech-bounces at classiccmp.org <ard at p850ug1.demon.co.uk> wrote: > > > > what you get someone whos got everything else. Or at > > least every other IBM incompatible on the planet (ok > > Im not quite there). Also a must for the truly > > masochistic (gcr floppies). What every guru/sicko > > The hardware is a bit odd... It clearly shows the Chuck Peddle influence, > it's full of 6522s (3 on the mainboard, 3 on the disk controller), and > the disk read/write circuit is very similar to that in a Commodore PET > drive... > > A couple of odd things. Firstly, the Centronics port is driven by GPIB > buffers (75160 and I think 75162). A 'little matter of programming' and > the right cable would get you a GPIB port there, > > Then there's the user port. A 50 pin header on the mainboard. It's almost > a complete 6522 (I think one of the port lines is used to clock the sound > circuitry), along with a light pen input and power lines. Odd.... > > And the sound iput. THe encoding half of the codec is wired to the > receive side of the 6852. The input to that codec comes from a pin on > header on the mainbosrd (along with power lines, ground, etc). It would > not be hard to feed an audio signal in there, the hard part would be to > write/find the necessary software.... > > -tony __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 10 months

BIOS upgrade cards

by rcini＠optonline.net

All: I have an old Compaq 386 that I use for various tasks in the shop. The Compaq BIOS has a fixed hard drive table and no "type 47 - user" entry. So, I just used whatever I had for a drive in stock and I picked the entry closest to the drive size. This brings up an interesting query. I remember way back when, people sold BIOS upgrade cards that provided a BIOS extension so that you could use hard drives not originally designed for the computer. What were these boards called? Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

18 years, 10 months

Museum of Computing Calculator Exhibition

by info＠museum-of-computing.org.uk

The Museum of Computing is delighted to announce that Sir Clive Sinclair will be guest of honour at the launch party for the Museums' latest exhibition. 'CALCULATOR' from the Abacus to the Microchip opens to the public from 7th March 2006 and will feature over 100 exhibits, tracing the history of the incredible devices man has built to aid his mathematical manipulations. The undoubted star of the show is the stunning gold plated Sinclair Sovereign, once described as the worlds most beautiful calculator. The exhibition will run for six months, admission is free. For more information www.museum-of-computing.org.uk Simon Webb, Curator Museum of Computing

18 years, 10 months

Data General MV/1400 info

by James＠jdfogg.com

My older brother was one of the developers of AOS/VS, the OS this machine ran. I have been looking for such a machine for a long time. The MV's are early 32bit minis. They were competitive with the PDP's and other minis of the era (1980's). They communicate with serial terminals mostly, and the terminal is slightly odd in its protocol (Dasher terminals). A DEC terminal will get you started, but will be frustrating. There's a lot to know about these machines and there is at least one knowledgeable person on this list who has various DG equipment (other lines are the NOVA and ECLIPSE systems). They are one of the rarer minis. And I apologize in advance for top-posting, and for the stupid little attachment that some users will see. I'm stuck on Outlook Web Access today and it doesn't play nice. ________________________________ From: cctalk-bounces at classiccmp.org on behalf of Glen Heiberg Sent: Wed 2/15/2006 1:54 AM To: cctalk at classiccmp.org Subject: Data General MV/1400 info Saw a Data General MV/1400 machine at a client site yesterday acting as a coffee stand! It's about the size of a 6U rack server standing on its side, mounted on a 'foot'. Apart from an ON/OFF button and the name badge, the front has a QIC-type tape drive, and next to it a blanking plate that appears to be able to house either another QIC drive or a floppy drive. Nothing else interesting. Unfortunately I wasn't able to peek at the back. Google didn't yield much on this machine. Anybody know more details? Glen.

18 years, 10 months

Replace 3.5" drives in HP9122D/HP9133H

by vp＠cs.drexel.edu

Unfortunately this not possible as the RPM of the drives is different. Ironically, when I was looking for drives for my HP-85 I selected the 9122 because I thought I would have spares for the floppy drives. This turned out not to be the case (plus I had to find the super rate EMS ROM which meant that the 9122 sat on a shelf for about a year). **vp

18 years, 10 months

Online manual repository?

by trixter＠oldskool.org

I lost yet another bid for the Technical Reference Manual for IBM PC-XT; is there an online tech ref manual archive somewhere? I hate to keep bugging you guys with questions; I'd rather consult tech docs and *then* ask if I'm stumped. But if these things keep going for $50, $100, or more on ebay I won't ever get a hold of a copy... -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

18 years, 10 months

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test-drb February 2006