test-drb

test-drb@ccmp.vtda.org

101090 discussions

by healyzh＠aracnet.com

I was rather surprised to see Paxton on the news this last weekend. He was in a spot on one of the local stations as a local historian talking about a landslide that they're having problems with in his part of the state. 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/ |

19 years, 2 months

2.11BSD source code browser and xref

by W.F.J.Mueller＠gsi.de

When searching lately a lot through the UNIX 2.11bsd source code I wanted many times a hyperlinked and cross referenced rendition of the sources, much like doxygen or lxr does it. For kernel, lib and user code, for c and assembler. Since none of the existing tools seemed to do what I wanted, I wrote a perl script generating such a html'ized version of the source code. The tool far from finished, but might already be useful. For a tour start for example with the code of the 'cp' command http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/bin/cp.c.html and click along. The links connect C and asm code, the user land code, libc and kernel code. Look to the readdir() call in line 197, a click gets you into the libc module implementing readdir(). A further click on read() into the assembler stub doing the system call, and a click on the kernel handler listed there gets you into the kernel source. Here the links of the tour http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/bin/cp.c.html#n:197 http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/lib/libc/gen/readdir.c… http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/lib/libc/pdp/sys/__rea… http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/sys/sys/sys_generic.c.… The background color tells you in which territory you are in magenta boot and standalone code red kernel orange network code (running in supervisor) green libraries blue user level code If you want a kernel tour, start at http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/sys/sys/init_main.c.ht… Clicking on a symbol definition (or the X in the sidebar) gets you to the cross referencing info's. To see for example who is using setjmp see http://www-linux.gsi.de/~mueller/test/211bsd/usr/src/lib/libc/pdp/gen/setjm… or who is including nlist.h see http://www-linux.gsi.de/~mueller/test/211bsd/usr/include/nlist.h.html#xref:… As said, it's beta stage, the style sheet is still the debug version, not all links end where they should, not all is parsed as it should. Hope you enjoy it. Comments, suggestion ect are very welcome. With best regards, Walter -- Dr. Walter F.J. M?ller Mail: W.F.J.Mueller at gsi.de GSI, Abteilung KP3 Phone: +49-6159-71-2766 D-64291 Darmstadt FAX: +49-6159-71-3762 URL: http://www-linux.gsi.de/~mueller/

19 years, 2 months

pretty much OT: acoustic coupling

by rdawson16＠hotmail.com

We will get several comments after this post... I hope y'all will correct me. The acoustic coupler on the old teletype was 1200 baud, 10 characters per sec. to match the machine. It was FSK (Frequency Shift Keying) with two tones 1200hz and 2400hz for 0 and one. Depending on the # of start, stop bits in the serial stream and parity baud .NE. bytes/sec. Phone lines have a 2500hz bandwidth, and today's modems use QAM (Quadrature Amplitude Modulation). You can visualize this if you think of a signal as a rotating vector on an xy grid - say a constant sine at constant amplitude would represent a circle. put 4 points uniformly on the circle and XY grid, and you have 4 QAM. 16 points (rectangular array, not on the unit circle), 16-QAM etc. Each point represents 2 bits in 4-QAM (dibits), and 4 bits in 16-QAM. this is called the signal constellation. To further encode the signal and reduce errors, they use techniques called viterbi and trellis encoding, these limit the accepted signal transition >from one dibit, qbit to another. In addition, modern modems train the channel. That's the white noise you hear at the beginning of the dialup - both ends are doing equalization for this connection. If errors occur, they fall back to lower data rates and retrain. Our 56K modems never get there here in the US, it is an FCC limit, and the reasons I am not sure. These basic principles above also apply to cell/radio transmission. There are other goodies they can throw into the algorithms to reduce multipath reflection (ghosts, as in TV) due to buildings objects, aircraft. to conclude, Ill bet with a homemade cell phone acoustic coupler to -> RJ-45 jack interface you could get same performance as dialup, near 56K. Needed: Sponge/muffs to adapt the cell handset electrostatic mic/speaker some op amp stuff to get the signals leveled resolve the dial-in and dial-out issues to fool the PC for dial tone and auto answer (and interface to the cell keypad to answer and send) Randy >From: Chris M <chrism3667 at yahoo.com> >Reply-To: "General Discussion: On-Topic and Off-Topic >Posts"<cctalk at classiccmp.org> >To: talk <cctalk at classiccmp.org> >Subject: pretty much OT: acoustic coupling >Date: Sat, 24 Mar 2007 13:39:38 -0700 (PDT) > >my application anyway. What is the typical maximum >speed of such a device, be it antiquated (I actually >used to have one of the old Radio Shack units), or >home-brewed. > And lookee, here's what I had: > >http://cgi.ebay.com/RADIO-SHACK-ACOUSTIC-COUPLER-MODEM- >TRS-80-AC-3_W0QQitemZ180098721480QQcategoryZ80229QQss >PageNameZWDVWQQrdZ1QQcmdZViewItem > > In fact, that's an acoustic modem. What I'd like to >implement is a "bridge" if you will between a modem >and a cellular device that would allow connection to >the internet. Ingenious, no? ;) > Please, no one tell me about software and such that's >presently available on the market. I'm aware of it, >own 99% of it, and I'll say here and now it's flakey >at best. > The technology is antiquated enough, albeit not the >application. O woe is me :( > > > >____________________________________________________________________________________ >We won't tell. Get more on shows you hate to love >(and love to hate): Yahoo! TV's Guilty Pleasures list. >http://tv.yahoo.com/collections/265 _________________________________________________________________ 5.5%* 30 year fixed mortgage rate. Good credit refinance. Up to 5 free quotes - *Terms https://www2.nextag.com/goto.jsp?product=100000035&url=%2fst.jsp&tm=y&searc…

19 years, 2 months

Mostek MK3881 PIO controller manual

by aliensrcooluk＠yahoo.co.uk

Ahh, i won the book Z80 Workshop Manual from ebay the other week. It mentions UART and PIO I/O chips on the back cover. Mine is a reprint from 1986 and was originally printed in 1983. - Andrew B (via mobile phone) --- cctalk-bounces at classiccmp.org <julesrichardsonuk at yahoo.co.uk> wrote: > > Does anyone know if the above is identical in spec to the "official" Zilog PIO > chip? The manual's dated November 1976 and stamped as preliminary, which is > a little unsettling :) > > I want to do some messing around with a Z80 CPU and PIO, and having a physical > paper reference to hand would sure be useful - I'm just not sure if I'm going > to shoot myself in the foot using this particular one! > > I should go and google for Zilog / Z80 history I suppose to see where Mostek > fit into things - I've got a rather thick Mostek UK Z80 programming manual > (V2.0) too which would also make a useful reference, assuming it's sound for > all Z80 chips regardless of source... > > cheers > > Jules

19 years, 2 months

Don Maslin/Archiving system software (was: ftp archives disappearing?)

by Billy.Pettit＠wdc.com

Jules Richardson wrote: For sure. But besides that, I see the web aspect purely as the most convenient method to allow users to do the searching. There's nothing to stop a search result pointing to a FTP site, physical mailing address to which to send your pre-paid envelope in order to receive a CD of data back etc. :) In other words, the actual data retrieval side doesn't *have* to be web-based at all (although realistically in most cases it probably would be). As you say, recording the date in the metadata is the way to go anyway! Billy: This brings in several points that should be discussed re: what is an archive. If I send manuals to be scanned and put on a web site, is that breaking the law? Here returns all the arguments about copyright law that have ensnarled this list before. Generally the answer is yes. But as one member responded, many copyright owners give a "wink and a nod" without officially blessing the activity. Of course many other IP owners have gone out of business and there may or may not be a new rights owner. Then comes the discussion of the manuals themselves. Many were distributed in thousands of copies. They fall under fair use laws. But some stuff from this list is detailed internal documents, such as software source listings, software maintenance documents, etc. This is a much more iffy arena. There might still be perceived value to this IP. In a few cases, and Control Data is one of them, IP (especially software) was sold and the new owner continues to protect his investment. If we want to play and share old CDC software, we have to ask for permission. To be on the good side of the new owner, we play by his rules. And he makes no effort to preserve the older unsaleable software. So the dilemma is how to save all this old software for the future? The method a few of us use is to make copies, put them in private archives and specifically prevent them from being accessed on the web. There may a very small private distribution to individuals known to have an interest in the software and willing to follow the owner's rules. This solves the preservation problem - multiple copies are saved. And it prevents the IP owner coming down like a ton of bricks. So now we have a young Turk who is going to save everything and distribute to whoever he wants. He ignores the narrow line that is being walked by the current public archives and even proposes we engage in illegal activities to help his acquisition yen. There doesn't seem to be any understanding that not everyone wants wide distribution of the software archives. Nor does he understand that what he wants to do could set off the wrath of IP owners against the current public archives. We survive at the whim of these IP owners. And many of them, like the RIAA, are in a bad temper. What a few of us are doing is ensuring multiple copies are archived without shouting it to the world. It achieves the goals of a lasting archive. And it keeps the Eye of Sauron away from us. And if copies are not available to leeches, too bad. Billy

19 years, 2 months

List very slow?

by healyzh＠aracnet.com

Is there a reason the list is so slow right now? It's taking an hour or better for messages to show up. This was sent at 10:04am Pacific. Zane

19 years, 2 months

PDP11 NSC RAM questions

by rescue＠hawkmountain.net

I've purchased a memory board for PDP11. It appears to be a National Semiconductor Q-BUS memory card. It has 980110014-001 on it. I find (currently) no markings saying like NS23D, NS23M, NS23S, NS23E, etc.... It is populated with MMC3764N-15 chips. There are 144 chips total. I'm still a newbie on 11s... but, if my internet searches are correct those chips are 64k x 1 ram modules. So it takes 8 of them to make 64 kilobytes. Assuming there is parity, 144/9 make 16 sets of 9 chips each with 64 kilobytes + 1 parity bit per byte (9th chip). This math makes it out to me a 1MB module. Can anyone confirm that is what it is ? I bought it as a 4MB module. Also, I believe this came out of an 11/73. Will this work in an 11/83, and if so, does it operate as PMI memory ? Thanks in advance from all you PDP11 gurus out there. And... if this isn't PMI memory, and if is only a 1MB board, would anyone want to take in in trade towards a M8637-EF (MSV11-JE) to go along with the existing MSV11-JE I have. -- Curt

19 years, 2 months

OS/400 V3R2 License Keys for hobbyist use

by compoobah＠valleyimplants.com

Doc wrote > IBM's idea of a hobbyist license is $15,000 a shot. Just out of curiosity, how does one generally learn these business systems? For MVS we have Hercules, for VMS there's the hobbyist program (and either cheap VAXen/Alphas or emulators), but for MPE/iX and i5/OS-OS/400 there's nothing. Is it similar to accordion repair where 2 schools turn out our entire national supply? Or do businesses keep a couple of old machines in the back for people to learn on?

19 years, 2 months

stuff arrived, some available

by jwest＠classiccmp.org

The stuff below just arrived today. The items marked with "*" I am keeping, the rest is available if anyone wants them. * Unopened box syncom platinum soft sector 8" diskettes (10) "Box" style binder "MicroPDP-11 Hardware Information" (2 manuals, Owners manual and Technical manual). Appears to be for BA123 type systems. * BA11-K mounting box users manual * DZ11 asynchronous multiplexor technical manual * Microsystems CP/M Programmers (quick) reference guide * TRS-80 Computer Reference Handbook (basic & command ref. for I, II, II, 4, 100, MC-10 and coco) RT-11 pocket guide * RSX11-M mini reference RT11 mini reference manual PDP11 processor handbook (pdp11 04/24/34a/44/70 1981) IMS International Ultima Series video display terminal user manual (2 copies) IMS International Ultima Series ultima II video display terminal user manual Digital Research Inc. CP/M "R" 2.2 Update (setup disk, and disk's 1,2,3 {5.25, soft sector}) A box containing a large number of DEC ribbon cables, most of which I don't know what they are for. There is one BC11A-10 that I will probably keep. If anyone wants the items not marked "*", let me know. Total cost (including shipping) is 1.25 times actual shipping costs. Jay West

19 years, 2 months

Computer Automation collection.

by hamren＠sdu.se

Hi, Time to introduce myself. My name is Lars Hamr?n, and I live in Sweden. My very first computer was a 16-bit Computer Automation Alpha LSI-2, that at first I programmed in Basic, and them in assembly. Some time ago I decided that, for sentimental reasons, I wanted an LSI-2, but soon discovered that CA was virtually forgotten and that very little remained. My scope was therefore expanded to try to collect and save as my of CA:s computer side as possible. (CA also made automatid test equipment). With a little luck, a lot of e-mails and phone calls, and a lot of help from other people, some of whom are active on this list (thank you!), I have been able to collect more than I initially hoped for, but a lot is of course still missing. There is a web site dedicated to the project at http://www.sdu.se/computer-automation-museum/ It details parts of the collection. I would very much like to get in contact with anyone who has information on these machines, or who has first-, second- third- or eve fourth-hand experience with these machines, or may know of someone who has. They are really becoming very rare, so *ANY* help and information is likely to be of value. Kind regards /Lars Hamr?n ------------------------------------------------------------------- Lars Hamr?n Tel...: +46( 46)189090 Svensk Datorutveckling Mobile: +46(705)189090 Vadm?llan 211 e-mail: hamren at sdu.se S-225 94 Lund WWW...: www.sdu.se Sweden

19 years, 2 months

Modems and Baud and Bits, Oh My...

by sdc695＠yahoo.com

Several people have been talking about modems and the like, and even acoustic couplers. Here are some points: The 103 Modem frequencies are: 1070/1270 and 2025/2225 ('mark' is the higher frequency). One group is used in each direction. As I remember it the high group was used as transmit on the answer side, as the "answer tone" (one of the high frequencies) was one that tripped the echo suppressors to "off" so they wouldn't interfere with the transmission of the data. The 103 modem has a 200 Hz shift (difference between mark and space) and doesn't like much above twice the shift frequency in data rate (that is why things changed after 300 bps). Some people were lucky (real lucky if you ask me) to get 450 bps out of the thing. Acoustic couplers go WAY back. In the 60's (some might think this is ancient history) it wasn't good to attach things directly to the phone line (people did it any way, but I digress). So, many schemes were used to couple things to the phone line. One of the most successful vendors was Anderson Jacobson. Tymshare (yeah, the guys with the SDS 940's) also developed a coupler. Their original one used magnetic coupling for the receive side as is was less prone to noise. Since you had the coupler near the ASR-33 you can imagine the noise. Magnetic coupling is still used in "hearing aid compatible" telephones (you will see it on pay phones with blue strain reliefs on the handset cord). At higher speeds several standards abounded. Bell "202" modems used a single FSK carrier with a wide shift to accommodate 1200 bps in ONE direction. The standard (Bell Standard) provided for a 5 bps back channel (so you could tell the other guy to "turn the line around"). Others expanded on the back channel to make it an FSK pair (around 300 Hz as I remember) that would about 150 bps. If you were using a CRT terminal, this was OK since you could hardly type that fast, and having the (big computer like pdp-10, or others) respond back at 1200 bps seemed like lightening fast. The next standard (The phone company was allowing direct connections by then) was 1200 full duplex. The first one was Vadic 3400, followed by Bell 212. While similar, they had opposite answer/originate pairs and were not compatible. These modems took in the 1200 async data and converted it to a synchronous stream that was sent over the carrier. What was nice is that if you used the modem and connected to a "low speed" (Bell 103 type) modem, it used those frequencies (like a second modem). Later developments raised the speed up to 33k bps full duplex using lots of computing power in the modem (which got cheaper to do). with various "V.xxx" standards. All of this finished up with 56k modems which was the limit for a DS0 channel (8 bits, less one for signalling and 8k samples per second). Just remember, programming on an ASR33 is a VERY humbling experience. Everyone should try it for one project just to get it. Unfortunately, comments get sacrificed but you do make up for it in the scribbles on the real paper. -- Tom Watson tsw at johana.com ____________________________________________________________________________________ Get your own web address. Have a HUGE year through Yahoo! Small Business. http://smallbusiness.yahoo.com/domains/?p=BESTDEAL

19 years, 2 months

CTX Panoview 630 power supply pinout?

by RAY_ALLAN＠solectron.co.uk

Hi Ethan, did you manage to find the power supply info you requested for the Panoview 630, as I have just aquired one but without the power supply. Ray

19 years, 2 months

Dulmont Magnum

by andrew＠taswegian.com

Some pictures of my Dulmont Magnum are available at http://www.taswegian.com/dulmont.zip (about 18MB download). There don't seem to be too many pictures of this around, so thought I'd post these for those interested. Cheers A

19 years, 2 months

OS/400 V3R2 License Keys for hobbyist use

by mbbrutman-cctalk＠brutman.com

I have a friend who has an older AS/400 in his personal collection of computers. (It is in the collection because the AS/400 is unique enough to be interesting.) He doesn't know a lot about it but he did manage to get a console, wire it correctly, and get to the OS/400 command line. To do anything remotely interesting with the machine he needs to have a development environment. I am figuring green screen COBOL, C and RPG are good enough. Does anybody know how to engage IBM to find out if license keys are available for home/hobbyist use? (Other manufacturers like DEC did this for their 'bigger' iron.) Mike PS: I work for IBM and I have code in every release of the AS/400 from V3R6 on up, and even I don't know where to go for this one ...

19 years, 2 months

One answer to "Wot duzzit do?" - OS/8 Adventure V2.0.

by rick＠rickmurphy.net

In what is the longest time *I* am aware of between Version 1.0 and Version 2.0 of a program (1979-2007), I'm happy to announce an updated version (2.0) of Adventure for your OS/8 system. (OK, I could have delayed this a couple of years and made it 30 years between releases..) Thanks to a list member that supplied me with the DECUS sources and Bob Supnik's RT-11 Adventure source, as well as a few helpful OS/8 FORTRAN libraries on the Internet, I've managed to not only recover the program source, but also make several improvements in the way it works. Unfortunately, it's still a memory hog that needs 32KW to run. I'm making source and binary floppies in SIMH-format, a zip file with all sources, and a web page with the individual source files available. http://www.rickmurphy.net/adventure.html has pointers to the SIMH floppy images, sources, etc. Happy exploring! -Rick

19 years, 2 months

11/45 lower regulator board

by jwest＠classiccmp.org

Hey, that thing is hard to get to! Someone tightened down the screws in the back that hold the regulator in place, so after undoing the two screws in front it still won't slide out. Is there a trick to this? Do I have to take the whole supply out? Can't get a screw driver in there with the upper H742 in place :\ Suggestions appreciated :) Jay

19 years, 2 months

some old stuff

by andrew＠taswegian.com

Some pictures of my "data numerics DL-8A" are available in a zip file at http://www.taswegian.com/datanumerics.zip Cheers A _____ From: Andrew Davie [mailto:andrew at taswegian.com] Sent: Thursday, 22 March 2007 3:36 PM To: 'cctalk at classiccmp.org' Subject: some old stuff Hey all I've been in and out of the classic computer collecting 'circles' over the past decade and a half, but these days don't have much time to play with the old toys. I thought I'd divest myself of some of the items that I've been collecting and though I wasn't sure if it were appropriate to advertise 'for sale' on the list, it's probably OK to let people know that I have these items and that I'll be happy to provide pictures and/or information for historical reasons. If you are interested in trade/sale discussion please contact me privately (andrew - at - taswegian.com). General questions about functionality/history can go to the list. I have a DataNumerics DL-8A. This is possibly the only one still alive, certainly the only one I've heard of in a decade+ in collectors' hands. It's a front-panel machine very much like an early Altair - lots of blinking lights. Very nice visuals, and appears to work perfectly - I fire it up every year or so. Inside it's an 8080, I think - haven't had it open for a while. Totally wirewrapped, quite neatly made. and with a low serial number in the 20s, from memory. I'll be happy to do images and/or provide additional information as requested. I also have a Dulmont Magnum with original manual. This is one of the very first laptops, comes with a fold-up 4-line LCD display. I haven't had this one working, nor have I tried. I'd be guessing to say it was functional, but there are no obvious issues like battery damage, etc. Weighs a ton, but for its day it was no doubt a portable marvel. I do have an extensive collection of early Soviet calculators and handheld computers. I collected most of these in the mid to late '90s when building my site Museum of Soviet Calculators - http://www.taswegian.com/MOSCOW/soviet.html . The collection includes a prototype or two, including one of the only two known MK-98 machines. The collection as a whole (100 machines?), but not individually is available for trade/sale. Finally, I have a very interesting homebrew machine built by a fairly well known Australian electrical wizard of the '70s and '80s, who published many articles in the aussie electronics magazines. This particular machine was a Signetics 2650 machine, but configured to run 8080 code (and hence, CP/M) through a software emulator. The whole machine, including the video card, was designed and built by the one guy and can be considered historical and one-of-a-kind. That's about it, really. If anyone would like pictures and/or further information on these just ask. Cheers A

19 years, 2 months

pretty much OT: acoustic coupling

by chrism3667＠yahoo.com

my application anyway. What is the typical maximum speed of such a device, be it antiquated (I actually used to have one of the old Radio Shack units), or home-brewed. And lookee, here's what I had: http://cgi.ebay.com/RADIO-SHACK-ACOUSTIC-COUPLER-MODEM- TRS-80-AC-3_W0QQitemZ180098721480QQcategoryZ80229QQss PageNameZWDVWQQrdZ1QQcmdZViewItem In fact, that's an acoustic modem. What I'd like to implement is a "bridge" if you will between a modem and a cellular device that would allow connection to the internet. Ingenious, no? ;) Please, no one tell me about software and such that's presently available on the market. I'm aware of it, own 99% of it, and I'll say here and now it's flakey at best. The technology is antiquated enough, albeit not the application. O woe is me :( ____________________________________________________________________________________ We won't tell. Get more on shows you hate to love (and love to hate): Yahoo! TV's Guilty Pleasures list. http://tv.yahoo.com/collections/265

19 years, 2 months

cctalk Digest, Vol 43, Issue 79

by dm561＠torfree.net

Date: Sat, 24 Mar 2007 16:43:45 -0500 From: Richard Lynch <richardlynch3 at tx.rr.com> Subject: Re: baud modifier <snip> Now I just need to convert the current loop on my ASR-33 to RS-232 so I can try it out. Richard Lynch ---------------------- Lots of ways of doing that; here's a simple one (p.4): http://www.edn.com/archives/1998/080398/pdf/16di.pdf mike

19 years, 2 months

AlphaStation 200/250 and 255 - ebay observations

by ddsnyder＠zoominternet.net

Maybe some can answer this question. Every (it seems) AlphaStation 200/250/255 that appears on ebay ends up selling for more than what I *think* is a reasonable price. Maybe maintenance org's buying spares? Are they used by some telecoms? I used to have the 255's as Operator interface displays for process monitor/control. They used DUnix 4.0E and some apps from Siemens. I was able to replace them with DS10's with little effort. I can maybe see why a DS10 would go for a high price, but not the 200/250/255. AlphaStation 200 - mostly Alpha cpus @166 or 233MHz AlphaStation 250 - Alpha cpu @266MHz AlphaStation 255 - Alpha cpu @233/266/300MHz They were and are not _that_ fast and memory expansion is limited. I realize at the time (1995-1998) time frame these machines were very fast, but this is 2007, you could purchase a used DS10 or DS20 and gain alot of power for less money. Clue me in please, Dan @ Butler, PA

19 years, 2 months

FYI - History of Systems Engineering Laboratories, Inc. [SEL]

by ragooman＠comcast.net

FYI I just updated the webpage with the history of the Systems Engineering Laboratories, Inc. [SEL], this was the first company I started working for. There were alot of sporadic info spread across too many webpages online so I started to consolidate this into one place. I just received alot of back history from one of the old guys that worked there. So far, there's some interesting stories and links in there. Some pages still need to fill up with some more info, but it's a start. History of Systems Engineering Laboratories, Inc. [SEL] http://ragooman.home.comcast.net/computers_mini.html =Dan

19 years, 2 months

ModComp / Diablo project

by glen.slick＠gmail.com

Anyone else notice this one: http://www.dovebid.com/Auctions/Auction10925/lotimagesEVER0205/2237107.JPG Looks like an interesting ModComp project, complete with Diablo? disk drives.

19 years, 2 months

OS/2 Warp 4 disk image needed

by rcini＠optonline.net

All: I?m trying to resurrect a copy of OS/2 Warp 4 and I seem to have a bad disk image. Does anyone have an image of Disk 17 that they can send me? Also, does anyone know how many floppy disks Warp 4 contains? I?m afraid that the damaged archive is truncated so I don?t know how many images I might have had in it. Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years, 2 months

AlphaStation 200/250 and 255 - ebay observations

by ddsnyder＠zoominternet.net

I would agree, with Zane in that I would prefer an XP1000 @667Mhz to use every day. The apps I have maintained have migrated easily from and AS200 in 1995 to the XP1000 without issues, VMS 6.2 to 7.3. Maybe it is easier to do like kind replacement, you know all ports the same. The AS200/233 go for at time over $300 US. Once in a while an AS300 (AS250) can be found for less, depends on haw the ebay listing is worded. Dan @ Butler, PA

19 years, 2 months

Anyone have IBM Diagnostics diskette?

by ngriffis＠bellsouth.net

Dear Sirs, Would you please let me know your best guess wholesale and retail values of the following IBM Manuals and disks: IBM 1.1 DOS #6024001 IBM 2.00 DOS #6024061 IBM 2.02 Guide to Operations #6025000 IBM BASIC #6025010 Thank you for any help you can give me in valuing these items, Nick Griffis ngriffis at bellsouth.net

19 years, 2 months

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test-drb