test-drb

test-drb@ccmp.vtda.org

101090 discussions

by alhartman＠yahoo.com

I'll take a look. But I think all four rows are soldered in. Thanks!!! Al > If it's an IBM XT mainboard, there's an easy way to do this (and not use > up any expansion slots). > > Put 41256 chips in banks 0 and 1, and 4164s in banks 2 and 3 on the > mainboard. Put a 74S158 (or 74F158) multiplexer chip in the emptu socket > at the front right, pointing the same way as the chips around it. Set the > DIP switches for 256K RAM, and solder a jumper wire between pads E1 and E2. > > That's it. You have a 640K XT mainboard. > > -tony

19 years, 7 months

cctech Digest, Vol 39, Issue 13

by roger.holmes＠microspot.co.uk

On 8 Nov, 2006, at 19:38, cctech-request at classiccmp.org wrote: > > Yes, that is infact, the Apple Dot Matrix Printer (aka ADMP) which is > identical to the ImageWriter, except that it works over a VIA 6522 > parallel port instead of the serial port that the ImageWriter uses. > They are all versions of the C. Itoh 8510. I'm not familiar with the > DEC LA50, but it's very likely that, it too, is a C. Itoh. My brother has a couple of these, I had both connected up to an Apple ///, which acted as a cash register in my father's ironmongery shop. One was for printing customer receipts and one for printing bar code labels. The computer had an old till drawer attached and a one bit output from the Apple /// operated a solenoid to open the drawer. There was a bar code reader for the Apple ][ which I reverse engineered the software for to made it work on the Apple ///, it just had a one bit input and lots of clever timing code, interrupt driven on my version if I remember correctly. I translated the whole lot for Lisa (while had one or two parallel cards), and the software was definitely interrupt driven there. > > The Inkjet printer for the Lisa is the Canon PJ 1080A. I wish I had > some real docs for this printer, but I don't. I had one of these too but it seems I put the manual back in the box with the printer, which has of course been chucked. Nearly all the other printers and plotters I've had on loan in the 80s and 90s (for writing drivers for) I managed to hang on to the manuals, but the Cannon (which we had to buy) is not with them. > Lisa's LisaDraw routines > (later rewritten in 68000 assembly and ported to the Mac and > renamed as > QuickDraw) do support color, I am fairly sure it was called QuickDraw on the Lisa as well. I think I still have two really thick binders for the Lisa programming environment somewhere. I remember writing my own code to do pull down menus in QuickDraw, CopyBits-ing the pixels the menu was going to cover up to an offscreen buffer, bringing up the menu, highlighting the items as the cursor went over them and reinstating the pixels after the cursor was released. Why Apple did not make these routines available I don't know. I chucked a lot of code away when we moved over to Macintosh. Most of the early Mac data structures were handle based but QuickDraw's GrafPorts remained pointer based right through to core graphics and Cocoa. > although its display is 1 bit black and white, > so, if you print a graphic that has color on this printer, you'll > get color. > I believe these were 16 colors, so 4 bit. There were just eight predefined colour names, and these mapped onto constants which were masks in both RGB and CMYK colour spaces. You could assign the foreground(paint,fill etc) or background (erase) patterns to any one of the eight colours. > > There was also a Daisywheel printer for the Lisa too, which was very > interesting, since it supposedly could also print graphics too > according > to the advertisements. I can imagine that it must have used a single > period character to poke dots, so it must have been super slow. I > couldn't find any real docs for it however. > Not practical for graphics. I remember seeing a daisywheel doing inverse text, bashing away with the vertical bar and then using the erase part of the ribbon to print the white text.

19 years, 7 months

4-way switches (was Re: New monitors on old machines)

by sdc695＠yahoo.com

der Mouse <mouse at Rodents.Montreal.QC.CA> said: > >> 7) Three way switch at the other enough of the hall. > > It's already on a three-way switch with the bottom of the stairs... > > do they make 4-way switches? > > Yes. You need two SPDTs (which you already have) plus as many DPDTs as > necessary to fill out the desired quota of switches (which means just > one of them, in your case). I've seen it done (at least for three > switches). House 4-way switches DO exist. They have 4 terminals (thus the [USA/NEMA] "4-way" designation). They preform the "normal"/"cris-cross" switching function. A quicky web search <"4-way" switches> got lots of answers, and you can buy these (new, sorry not 10 year old) devices. The first return from a yahoo search has a nifty animation on how this all works. The technology has been in use for quite some time (the house I grew up in used a 4-way switch in the 50's). The problem is that not many places stock the things (I looked on Home Depot's site to no avail). Basically the switch train is a bunch of exclusive-or's so that any switch can make the "sum" 1 (on), or 0 (off). I had to get a computer reference in there somewhere! If you do decide to do some wiring, be careful. There are lots of references on the web on the "how-to" aspects. Ob antique stuff: Yes, the house also (the part built in 1946) had knob & tube wiring. The other part (built in 1952) where the 4-way switch was had something resembling romex. -- Tom Watson tsw at johana.com ____________________________________________________________________________________ Want to start your own business? Learn how on Yahoo! Small Business. http://smallbusiness.yahoo.com/r-index

19 years, 7 months

Discussion of large systems (cctech Digest, Vol 39, Issue 11 9/11/2006)

by roger.holmes＠microspot.co.uk

Al Kossow <aek at bitsavers.org> wrote: On 8 Nov, 2006, at 19:38, cctech-request at classiccmp.org wrote: > > If you are interested, I could probably get you one of these when > they're > available > > http://bitsavers.org/tools/wizl/tapewizl/ > > Paul Pierce built something similar to what you did for recovering > 7-track > data, and discovered that you really need to recover the data using > analog > techniques to get any reliability. > > http://www.piercefuller.com/collect/proj.html > > Thanks for the offer. I will see how we get on using the original hardware first. The decks have ten tracks so I guess I would need two of them. Each frame contains 4 bits of data and six error correction bits so I am hopeful that the original hardware, after recalibration etc, will be able to read almost all of the data, and where we can't, at least know which frames have errors in them.

19 years, 7 months

It feels SOOOO good to run a modern OS on classic computers

by dzubint＠vcn.bc.ca

ahhhh, I just finished installing the newest (Nov 1 2006) v4.0 OpenBSD on my MicroVAX 3100 (17 years old) It really gives me a warm fuzzy feeling that they're still useable. Thomas Dzubin

19 years, 7 months

Spending $$$ on classic hardware (was Re: lisadraw)

by mtapley＠swri.edu

At 22:30 -0600 11/8/06, Ethan wrote: >$600 for an RL8A in the mid '80s, $400 for a KT24 (to run 2BSD), over >$1000 for a PDP-8/S, $800 for a SPARC1 in the early 90s... > >Guilty, guilty, guilty. $800 for a pile of NeXT gear, because it included a NeXTDimension card. Still working on restoring, equipping, and distributing the slabs, which has cost hundreds more dollars so far. $800 for a NeXT cube, but at the time that wasn't "classic". I'm not quite sure how to count the gas, storage space, etc. over the years, but that might be substantial. Still a cheap hobby, compared to many things. -- Mark Tapley, Dwarf Engineer (I haven't cleared my neighborhood) 210-379-4635 Dwarf Phone, 210-522-6025 Office Phone

19 years, 7 months

SN94281

by PLM3128＠aol.com

Do you have any SN94281 or know where I might acquire them I need a fist full. Thank You

19 years, 7 months

Gould Biomation K-105D Logic Analyzer Available

by sloboyko＠yahoo.com

Certainly, there are a lot of logic analyzsers (or analysers, if you are English) floating around. I was told by a guy who specializes in "refurbished" (i.e. dusted off) test equipment that this is because a lot of it is gov't surplus where they just grab the unit. He also mentioned that a lot of university surplus has partially blown pods because of carelessness - due to the nature of what they do, not much protection on the inputs. I have a Tek 1230 which I was lucky enough to get some pods with. I had another one w/o pods and GOOD LUCK on getting schematics, etc on this stuff - it's a "black art" proprietary sort of thing. ===== -Steve Loboyko Incredible wisdom actually found in a commerical fortune cookie: "When small men cast long shadows, then it is very late in the day." Website: http://juliepalooza.8m.com/sl __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/

19 years, 7 months

OT: Where have electronics hobby stores gone?

by cclist＠sydex.com

Awhile ago there was a thread on the decline of electronic hobby- related retailers in the US and UK. Well, I think I've figured out where they've gone--Thailand! Take a look at the catalog on this site (Warning--it's a 12MB PDF): http://www.etteam.com/ I wish I could read Thai... They have a English-language dealer site at http://www.futurlec.com but they don't carry half of the good stuff in the catalog. Cheers, Chuck

19 years, 7 months

Someone want to 'splain this one to me?

by cclist＠sydex.com

Sorry for harping on an old topic, but this really has me mystified: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320044031900 Cheers, Chuck

19 years, 7 months

FA: Litton disk drives?

by legalize＠xmission.com

What do these go with? I didn't know Litton made disc drives. Pics: <http://web.govliquidation.com/auction/view_photo?eventId=2619&lotNumber=45&…> Lot: <http://cgi.govliquidation.com/auction/view?auctionId=1036131&convertTo=USD> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html>

19 years, 7 months

OT: Software for Transtronics/Intronics EPROM programmer

by KCOCF＠NETINS.NET

Bob, I have the pocket programmer and have lost the disk as well, did you ever find a file to run it? I know it's a dos only disk, but that is not a problem. Let me know. Mike IOWA

19 years, 7 months

OT: Where have electronics hobby stores gone?

by compoobah＠valleyimplants.com

What Warren Wrote: > Hey, it's worse than that. I recall seeing, about a year ago, an ad >for an electronics project SIMULATOR in Windows software. You build the >project, and it pretends to run it, and does what real components would >do, producing a signal on screen, and as sound, if appropriate. *SIGH* Perhaps the software in question was slightly different, but electronics simulation software (such as PSPICE and its variants) have been around for a while- used it in college. Very convienient to be able to mock something up with the magic smoke being completely virtual, especially when you barely know what you're doing.

19 years, 7 months

semi-ot: are zip drives being phased out?

by chrism3667＠yahoo.com

I just found a bow of brand new Iomega 100meggers for $20 (x10). Was thinking of hacking a scsi card for the T2K, but how long will zips be available? ____________________________________________________________________________________ Sponsored Link Mortgage rates near 39yr lows. $420k for $1,399/mo. Calculate new payment! http://www.LowerMyBills.com/lre

19 years, 7 months

Need Docs for XT RAM Board...

by chrism3667＠yahoo.com

is anyone familiar with a IIrC sip module that has probably smt 4164s (or 41256s). Besides the obvious physical difference, could they replace normal ics? ____________________________________________________________________________________ Sponsored Link Get a free Motorola Razr! Today Only! Choose Cingular, Sprint, Verizon, Alltel, or T-Mobile. http://www.letstalk.com/inlink.htm?to=592913

19 years, 7 months

imaging XENIX disks

by chrism3667＠yahoo.com

several have that same look. Methinks the 586 has a 186. old-computers.com. There might be an Altos on ebay right now. ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail. http://new.mail.yahoo.com

19 years, 7 months

test

by jwest＠classiccmp.org

test, please ignore Jay West

19 years, 7 months

epay listings

by jwstephens＠msm.umr.edu

There are a number of listings by one vendor that are of interest. the thing I found was an LNW-80 system board, but he also has a full system, system expansion board as well. Also are some Ohio Scientific parts, and Imsai, apple Pineapple clone. Also someone may know what a Commodore MSD super disk is listed. vendor is "fdbruce" one listing number is 170045443608 LNW auctions for parts end today. others are out as far as a week. (Today is Wednesday@ 418pst) FWIW, the transit of Mercury ended a bit ago. Jim

19 years, 7 months

paging jerome fine

by jwest＠classiccmp.org

My email address for Jerome Fine is dead.... anyone have a working email for him please email me offlist! Jay West

19 years, 7 months

Spending $$$ on classic hardware (was Re: lisadraw)

by ethan.dicks＠gmail.com

On 11/9/06, Richard <legalize at xmission.com> wrote: > > In article <20061108022926.45215.qmail at web61017.mail.yahoo.com>, > Chris M <chrism3667 at yahoo.com> writes: > > > --- Richard <legalize at xmission.com> wrote: > > > > > Guilty as charged, Sir! And by definition, that > > > takes me out of the > > > category of the lowly user :-). > > > > A full confession is in order. > > Um, let's see... $350 for a Beehive terminal. > $1200 for a lot of Tektronix terminals :-) > $500 for a PDP-11/03 w/peripherals > > I think those are the only ones where I broke the $200 barrier. $600 for an RL8A in the mid '80s, $400 for a KT24 (to run 2BSD), over $1000 for a PDP-8/S, $800 for a SPARC1 in the early 90s... Guilty, guilty, guilty. At least the SPARC was an investment in my future (my SPARC experience was directly responsible for getting me my first trip to the South Pole in 1996). The others were just toys. -ethan

19 years, 7 months

New monitors on old machines

by ajp166＠bellatlantic.net

> >Subject: Re: New monitors on old machines > From: woodelf <bfranchuk at jetnet.ab.ca> > Date: Sun, 05 Nov 2006 13:27:53 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Fred Cisin wrote: > >> >> 1) X10 (quite a bit more than 10 yrs old, controllable by TRS80) >> 2) train your dog how to work a light switch >> 3) switch with delay >> 4) auxiliary lighting in the hallway >> >5) Sleep on the sofa :) >6) Night light > 7) Three way switch at the other enough of the hall. Allison

19 years, 7 months

uber-nerds (was Re: lisadraw)

by aliensrcooluk＠yahoo.co.uk

--- Chris M <chrism3667 at yahoo.com> wrote: > >> snip << > > Fine, but how many qualify for the uber-nerd > category > (I mean how much more of a nerd is there then > someone > who didn't get enough of this crappola when it was > current LOL LOL). > Ok, but let's be specific. Who has spent >$200 fo r > a > piece of equipment, software, hardware, > paraphenalia, > whatever, that was at least 15 years old? I want t o > say 20+, but let's make it easy. And not for > work/profit...for umm, pleasure (?). I for one > qualify. oi > Hmmm... I spent about $400 (err.. $200 USD and $200 AUD) on 60 issues of 80 Microcomputing. But that probably doesn't count as it's 60 items (magazines) instead of just one. My other expensive purchases don't count as they were all made in the last decade. Regards, Andrew B aliensrcooluk at yahoo.co.uk

19 years, 7 months

KENBAK-1 documentation

by aek＠bitsavers.org

A box surfaced at CHM yesterday with documentation on some mid-80s donations. They would often include small items in the folder for the artifact, and I was plesantly surprised that all of the documentation that came from John Blankenbaker's KENBAK-1 donation was there. I've scanned the brochure, hardware and programming manuals and still need to do the lab manual. All up on bitsavers.org/pdf/kenbak. Erik, if you happen to have the parts list in the docs you have, that would be useful, since the schematics don't give component values for the passive components.

19 years, 7 months

PDP-11/44 problem - RUN stays on

by jwest＠classiccmp.org

Henk wrote... > "?CP didn't start". I already knew that this is the > typical bus hang condition, Yup it is, seems you fixed it with the G7273 > However, ... besides the DC ON light, the RUN light > stays ON too. I am sure the RUN light should go OFF. Disclaimer... I'm new to these machines, the below is a newbies guesses :) Perhaps your M7098 (UBI) module is set to autoboot from one of the proms upon powerup, and that's why it comes up in run mode. This is a personal preference thing, but I never have a machine autoboot to anything other than the console emulator. I then always select the boot device by hand. Many people instead set the switches on the UBI to attempt a boot from a particular device upon powerup. This may be why you power on in run mode. I would suggest that you look at the 10 position dip switch on the UBI and set 1,2, and 7 on and all the rest off. Then power up and see if you dont get just the console prompt. > and nothing more, no ">>>" prompt anymore! > > Also, the FAULT lamp on the RL02 drive stays ON. If I was to make a newbie guess... you have a problem with your RL02 subsystem (drive, cable, or controller) and your UBI is perhaps set to autoboot the DL prom. So when you power it on it attempts to boot the RL02 and hangs because of another problem. Setting the switches as above would identify this possibility. If it then comes up to the CONSOLE prompt correctly, you can at least know it's time to zero in on the RL02 subsystem. Jay

19 years, 7 months

VCF 9.0

by marvin＠rain.org

I haven't seen anything about VCF yet, so thought I would put down a few comments. It was a fun time as usual at VCF, and I met a lot of interesting people there. I got a chance to put some faces with names, and that is always a lot of fun. The majority of my time was spent taking care of my vendor booth, and so I didn't take a lot of time to spend in other areas. One of the neat additions was the kit building workshops. Several people got their Apple I replica kits signed by Woz. It seemed like the number of vendors and exhibitors were down, but the number of people attending were up. One of the exhibits I liked was the Apple Lisa. The exhibitor, who goes by Lisa :), was very knowledgeable and I learned a number of things from her regarding collecting Lisas. For those that don't know me, I do have a perverted sense of humor. I had brought a Chisholm computer that I think might be a prototype of the first IBM battery operated portable (later licensed to Olivetti) to see if anyone knew anything about it. Evan will hopefully be doing an interview with the company president, and I mainly brought it for him to see. But after watching people ignore it, I put a $2000 price tag on it ... and that got it a little more attention :). But people still didn't ask about it though they took more notice of it. And no, I don't think it is worth anywhere near that much money. I was talking to Sellam, and it would have been a good place to at least mention the Vintage Market Place for selling/trading/buying/etc. vintage computer stuff. And I also think this and Eric's listservers should also have been mentioned. If we are to help build this hobby, it might be a good idea to let people know where to get more information :).

19 years, 7 months

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test-drb