- test-drb@ccmp.vtda.org - classiccmp.org

DEC

by CCZEISS＠aol.com

Hi, How much for the H789/ BA11M? Thanks, Paul

22 years, 10 months

1
0
0 0

UK: tape winder? Atlas Autocode charset (flexowriter) conversion?

by gtoal＠gtoal.com

Chris Whitfield and Ian Young have interfaced the borrowed optical paper tape reader that we were kindly loaned and have it working on a PC. Before we go to the site that has the paper tapes (several dozens) does anyone have a winder we could borrow to save winding them all back up by hand? Also before I write it (I have some paper documentation to work from describing the Atlas Autocode character set, which is from the Flexowriter printers that were attached to it) does anyone already have any code to convert from the flexowriter char set to ascii in any form? We're hoping to get a copy of the Atlas Autocode compiler on paper tape... Graham

22 years, 10 months

3
2
0 0

Primate Programming

by rigdonj＠cfl.rr.com

Everyone should read this! <http://www.newtechusa.com/ppi/main.asp>

22 years, 10 months

2
1
0 0

3.5" drives (720,1.44 or 2.88)

by kenziem＠sympatico.ca

Is there a quick and easy way to tell them a part? In a previous thread on separating 5.25 drives there was mention of testing for the number of sectors. Does someone know where such a program may be located?

22 years, 10 months

3
5
0 0

ECMA 46 tape standard

by coredump＠gifford.co.uk

I've been asked about a quarter-inch tape standard from 1976, called ECMA-46. It's apparently 63 bits per mm, phase encoded. I work that out to 1600 bits per inch. Now, is this one of the early QIC (Quarter- Inch Committee) standards? Could it be QIC-11, the four-track system used on Sun-2 machines? Or is it something else entirely? And how could such a tape be read, nowadays? -- John Honniball coredump(a)gifford.co.uk

22 years, 10 months

2
1
0 0

New additions-- Lots of coco computer stuff

by SUPRDAVE＠aol.com

A guy that's seen my website contacted me and brought me a trunkload of color computer stuff up from SC. I got a color computer 1 and 3, a multipack interface for the model 1, dozens of programs on tape, zenith display, dual disk drives, tandy dmp102 printer, a mix of about 200 magazines for the coco, like rainbow, hot coco and some others. also got a tutorial on tape for the 6809 and some assembler program. Everything's dusty, but in all over good shape. The magazines really show quite a color computer following back in the day. Some magazines are over 300 pages each. -- Antique Computer Virtual Museum www.nothingtodo.org

22 years, 10 months

2
1
0 0

VAX items from MN Trip

by jrkeys＠concentric.net

Also picked up a VAXserver 4000/200 and R215F DSSI expander for it.

22 years, 10 months

3
3
0 0

Twinhead Superset 310

by gesar＠tiscalinet.ch

Dear Listers, I'm completely new to this list as well as to vintage PCs and I hope to get some help from you knowledgeable folks in respect to a box I recently got from a friend of mine. It's a Twinhead Superset 310 with a 80286 processor, 1 MB of RAM, a ST-251 harddisk and 5,25" floppy-drive (IBM YD-380) for 1.2 MB disks. The battery was gone, so at every startup, I had to type in the configuration setup. I ONCE only managed to boot the machine which immediately started WordPerfect 5. I typed a few sentences but I could not save this text (the program all the time asking for a floppy I did not have) nor could I end the application or shut down the system (I REALLY do not know anything about DOS). So, I just powered down the machine. Afterwards, I never again managed to boot the PC, as it always asked for a floppy. Meanwhile, I managed to de-solder the 3.6 V battery and I'll look for a replacement. But there are a lot of questions, as I'd really like to learn to get this machine running and as I'd like to handle it: - The mouse-port on the back looks like a P/S2 but its larger in diameter. What standard is this? - There is one ISA-card I do not know what it is for. It has an external connector just looking like a VGA, but the monitor did not work with that. Furthermore, there are two black connectors ("wholes") about the size of an RCA audio in/out. A networking card (BNC)? - Generally: Does somebody know this machine? Somebody has manuals? Best thanks for caring! Steff

22 years, 10 months

1
0
0 0

UK:tape winder? Atlas Autocode charset (flexowriter) conversion?

by aek＠spies.com

here is something I wrote to decode some pdp-1 tapes note that not all characters have ASCII equivalents. #include <stdio.h> char cvt[] = { ' ', '"', 0x27, '~', '.', '.', '.', '<', /* 00 - 07 */ '>', '^', '.', '.', '.', '.', '.', '.', /* 10 - 17 */ '.', '?', 'S', 'T', 'U', 'V', 'W', 'X', /* 20 - 27 */ 'Y', 'Z', '.', '=', '.', '.', '\t', '.', /* 30 - 37 */ '.', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 40 - 47 */ 'Q', 'R', '.', '.', '+', ']', '|', '[', /* 50 - 57 */ '.', 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 60 - 67 */ 'H', 'I', '.', 'x', '.', '.', '.', '\n' /* 70 - 77 */ }; char cvtl[] ={ ' ', '1', '2', '3', '4', '5', '6', '7', /* 00 - 07 */ '8', '9', '.', '.', '.', '.', '.', '.', /* 10 - 17 */ '0', '/', 's', 't', 'u', 'v', 'w', 'x', /* 20 - 27 */ 'y', 'z', '.', ',', '.', '.', '\t', '.', /* 30 - 37 */ '.', 'j', 'k', 'l', 'm', 'n', 'o', 'p', /* 40 - 47 */ 'q', 'r', '.', '.', '-', ')', '.', '(', /* 50 - 57 */ '.', 'a', 'b', 'c', 'd', 'e', 'f', 'g', /* 60 - 67 */ 'h', 'i', '.', '.', '.', '.', '.', '\n' /* 70 - 77 */ }; main() { char c; int state = 0; while(!feof(stdin)){ c = getchar() & 0x3f; if (c == 072) {state = 0; continue;} /* lower case */ if (c == 074) {state = 1; continue;} /* upper case */ if(state){ if(cvt[c] == '.') { printf(">>%02o<<",c); continue;} putchar(cvt[c]); } else{ if(c != 073) {if(cvtl[c] == '.') {printf(">>%02o<<",c); continue;}} putchar(cvtl[c]); } } }

22 years, 10 months

1
0
0 0

Backing up ST506 disks

by julesrichardsonuk＠yahoo.co.uk

Hi all, I'm just wondering how to back up the hard drive (a 20MB MFM) in my Research Machines fileserver. The system runs CP/M, has a couple of floppy drives, and the hard disk is hooked up to a Xebec controller with a SASI bus linking it to the host controller in the fileserver. There are actually two problems: 1) Getting the data off the hard drive somehow (possibly via floppy) and being able to read it on another system (ideally a PC I suppose) 2) Being able to rebuild the system if/when the hard drive fails. Thoughts on both are welcome! I don't have any kind of OS source media for the system, and it wouldn't surprise me if it isn't the only survivor :-( Maybe there are utilities on the system itself to recreate bootable OS media, but my knowledge of CP/M is a little lacking! For my old SCSI systems I tend to hold a raw block-by-block backup image of the drive by putting the hard disk in a PC with Linux and dragging data off that way. If the drive fails and I can't get an identical replacement, a slightly larger drive still works with a little bit of wastage. Due to the relationship between the controller and drive using ST506 I gather things are probably a little more complex though... cheers Jules ===== Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

5
6
0 0

Another Intel! E320EB

by rigdonj＠cfl.rr.com

I seem to be on a roll lately so this weekend I dug out an Intel that I bought off of E-bay some time ago but never got around to checking out. Disassembled, cleaned and inspected it. Found out that it is an Intel E320EB and uses Multibus cards. Oh, and it's serial number E00001000! I couldn't find a description of it in any of my Intel books but it has a CPU DX-2 66MHz CPU with built-in SCSI port and a 32Mb daughterboard! Also has three 4-port Intel iSBC 544 Communications cards, a SCSI 3.5" floppy drive, SCSI tape drive and two SCSI had drives. The CPU card and daughterboard are made by Radisys. After some checking I found that Radisys bought Intels Multibus I line from Intel in 1996. The ROMs on this one are also dated 1996. Today I made a cable for it and connected it to terminal and tried it out. It booted up fine and passed all the self-test. It boots up and loads IRMX III.2.2. Boot like the Intel 310 I don't have the account name and passwords so I couldn't log in. Anyone know any more about the 320 systems or have any idea of how to get into the iRMX system? Joe

22 years, 10 months

1
0
0 0

Attn: Gene Ehrich

by acme＠ao.net

Sorry to post this here, but my reply to Gene bounced. From: Gene Ehrich <gehrich(a)tampabay.rr.com> To: Glen Goodwin <acme(a)ao.net> Subject: Re: 3.5 inch DSDD diskettes - NOS - any interest? Date: 08/04/2003 12:15 AM > > >"720K" 3.5" DSDD diskettes, 10 per box, new old stock > > > >$1 per box of ten, minimum 10-box order, shipped UPS through my commercial > >UPS account, buyer pays shipping > > I would like 40 boxes ($40) > > Do you have any idea what the shipping cost will be? A package of 40 should weigh no more than 4 pounds. I'm in Orlando. > Do you accept PayPal? No, but VISA, MasterCard, Amex and Discover work. I'll give you my toll-free 800 number if you don't want to send your charge card info via email. BTW the diskettes will land here in about 7-10 days. Again, apologies to the group but I had no other way to contact Gene. Later -- Glen 0/0

22 years, 10 months

2
1
0 0

IBM RT PC available

by spc＠conman.org

A friend of mine has an IBM RT PC Model 115 he's thinking of letting go: http://grumpy.conman.org/2003/08/01.2 If anyone is interested (I'm not sure how old the machine is, but it does run and has AIX 2.2.1 already installed) please contact him: journal(a)nolab.conman.org Thanks. -spc (Pictures are available at the link given above, location is Boca Raton, FL, ironically the location where IBM developed the IBM PC ... )

22 years, 10 months

1
0
0 0

5.25 Disk Sleeves

by teoz＠neo.rr.com

I purchased a while ago some 500 new bulk packed green 5.25 DD disks for my c64/IIgs systems that didnt come with any sleeves. Anybody know of a place that sells just the tyvek sleeves for 5.25" disks?

22 years, 10 months

1
0
0 0

HP 9111A Graphics Tablet -- Anyone has the software for it?

by vp＠mcs.drexel.edu

I bought an HP 9111A digitizing tablet on eBay for my HP-85 and I was wondering if anyone has the software needed to drive it. Alternatively, if anybody has info on the communications protocol used by the 9111A to talk to the HP-85 over the HP-IB bus, please let me know. Thanks **vp

22 years, 10 months

1
0
0 0

Items from Storage in MN

by jrkeys＠concentric.net

Went back up to MN to empty one of the storages left up there and found the followings items: 10 various pdp8/e engineering drawings books (11x17 in size) from 11/70. hp 1727A Storage Oscilloscope (275 MHz) with manual, does not power up but for $10 no complaints. IBM mag system (typewriter and reader). Sun Diagnostic Exec 1.2 for 68020 & 68030 1/2" tape and manual. LOGICAL QUV-T8 UV EPROM Eraser Mattel Electronics FootBall II from 1978. A great looking book called The Universal History of Computing by Georges Ifrah. Feedback Automatic Washing Machine MIC915 module for microcomputers with manual. Feedback Temperature Control MAT855 & MIC955 module for microcomputers with manual. DMS tele-sports mini handheld gaming system. SHOOTER EE/EPROM programmer by Logical devices. Unloaded a ton of stuff in storage here and will update list as I find more good stuff for the museum.

22 years, 10 months

2
1
0 0

8 inch floppy drives available

by r_beaudry＠hotmail.com

Hello all, I have the following 8" floppy drives available for $5.00 + shipping. The $5.00 covers the cost of a brand-new box, shipping materials, and my time to pack/ship. These drives are working pulls, but have not been tested in a few years. I may have manuals for the Shugarts, so ask if you need one (no extra cost). In order to be fair to digest and international users, I'll take emails from interested people until Tuesday, August 5th at midnight. Then I'll randomly choose people to ship the drives to. Please email OFF-LIST, and include a ZIP code or country so I can quote shipping. Shipping will be by USPS, from ZIP 01473. Shipping weight is approximately 25 lbs. per drive. I will weigh them and give an exact shipping quote when I determine who gets them. I CANNOT combine more than one into a box because of size/weight constraints (i.e., too big and heavy for me to carry!). You can go to www.usps.com and get a shipping estimate. Here's the list: - Qty. 1 Shugart 851 - Qty. 3 Shugart 801 - Qty. 2 Shugart 800-2 - Qty. 1 Qumetrak 842 - Qty. 1 Qume DT/8 (this looks like the 842, but I have no manual to tell the difference). Thanks! Rich B.

22 years, 10 months

5
5
0 0

Backing up ST506 disks

by aek＠spies.com

Put an ST506 controller into a PC. ST506/412 was the defacto standard on PCs until IDE. although most PC people erroneously refer to the cabling and interface as "MFM". The controllers used by IBM in the XT were made by Xebec. Once you have a controller and drive in your PC, you can write the code to read and write sectors to be able to copy a drive. -- It would be easier to use basic SCSI commands to talk to the S1410 controller directly. I have the documentation on line, and as long as no other peripheral is on the SCSI chain, it should work fine (SCSI is a superset of SASI) When you write the copy program, remember to have some fallback strategy WHEN you read a bad sector (filling with ascii "BAD SECT" for example) since you may not get any data back. You'll also need to figure out the disc geometry, sector length, etc. since you have to set these parameters into the S1410 before you can do anything. This may require some experimentation, but it isn't likely that they would have used anything other than 128,256, or 512 bytes/sector. the S1410 manual can be found at www.spies.com/aek/pdf/xebec/S1410Man.pdf

22 years, 10 months

1
0
0 0

Backing up ST506 disks

by dwightk.elvey＠amd.com

>From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk> > >Hi all, > >I'm just wondering how to back up the hard drive (a 20MB MFM) in my Research >Machines fileserver. The system runs CP/M, has a couple of floppy drives, and >the hard disk is hooked up to a Xebec controller with a SASI bus linking it to >the host controller in the fileserver. > >There are actually two problems: > > 1) Getting the data off the hard drive somehow (possibly via floppy) and >being able to read it on another system (ideally a PC I suppose) Write a serial dump program and move it to the PC. > > 2) Being able to rebuild the system if/when the hard drive fails. Learn enough about the system to extract the code needed to do a bootstrap. It will be worth your investment in time. The amount you'll learn will be more valuable than the boot strap code. The simples bootstrap is with some serial input to drive. You should get a second drive to fiddle with, that can later be used as a backup. Dwight > >Thoughts on both are welcome! I don't have any kind of OS source media for the >system, and it wouldn't surprise me if it isn't the only survivor :-( Maybe >there are utilities on the system itself to recreate bootable OS media, but my >knowledge of CP/M is a little lacking! > >For my old SCSI systems I tend to hold a raw block-by-block backup image of the >drive by putting the hard disk in a PC with Linux and dragging data off that >way. If the drive fails and I can't get an identical replacement, a slightly >larger drive still works with a little bit of wastage. Due to the relationship >between the controller and drive using ST506 I gather things are probably a >little more complex though... > >cheers > >Jules > > >===== >Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. > >________________________________________________________________________ >Want to chat instantly with your online friends? Get the FREE Yahoo! >Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

1
0
0 0

3.5 inch DSDD diskettes - NOS - any interest?

by acme＠ao.net

I hope this isn't too commercial for the list, but I have a couple of machines which use these so I figured some of you might need some, too. "720K" 3.5" DSDD diskettes, 10 per box, new old stock $1 per box of ten, minimum 10-box order, shipped UPS through my commercial UPS account, buyer pays shipping I'll run them through my store so I can take VISA, MasterCard, Amex or Discover Sorry for all the conditions, but I'll have to buy a *mountain* of these and need to know that I can move a few before I commit to the purchase Later -- Glen Goodwin Orlando FL USA

22 years, 10 months

1
0
0 0

OT: SCA Drives in StorageWorks SSB's

by healyzh＠aracnet.com

This is a bit modern for the list, but I'm hoping someone here has some experience. I've just been given a pair of BA356 enclosures, and the one has 6 empty DS-RZ1CB-VW SSB's. The shelf itself is a BA356-KD with BA35X-MD 2X fans, and a BA35X-MH 16-bit I/O Personality Module. My question is, while the DS-RZ1CB-VW SSB's are intended for 4.3GB 7200RPM *SCA* drives, can they handle 9 or 18GB 10,000RPM SCA drives? If nothing else, I can always fill the shelf with RZ29-VW drives, but would prefer some 18GB drives if possible (I suppose I can always get some 7200RPM ones off of eBay). Zane -- -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | 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/ |

22 years, 10 months

4
6
0 0

Microchannel Ethernet

by nedry＠mail.bedlambells.com

Don't need that... but, anyone got any microchannel ethernet cards? I have an IBM PS2/95 server, with only token ring. It's that or I have to build my own token ring segment. Kind of a drag... Thanks, Mark ---------- Original Message ---------------------------------- From: Bill Richman <bill(a)timeguy.com> Reply-To: cctalk(a)classiccmp.org Date: Tue, 22 Jul 2003 09:19:02 -0500 (CDT) >We've got a bunch of it at work, too. Probably 200 cards (mixed ISA & >PCI), several Madge "Smart" CAUs, LAMs, and RAMs, and a boatload of patch..

22 years, 10 months

4
4
0 0

Eli Heffrons on Hampshire Street, Cambridge,MA, USA

by classiccmp＠crash.com

Bob Shannon wrote: . > I've owned two, and serviced a great many back in the Eli Heffron days. Yow! I drive by the site every now and again and shed a tear for what was once a wonderful place to lose an afternoon. Back around '89-91 I worked at MIT and Eli's was a prime source of parts for labs with tight hardware budgets to repair/upgrade their ailing MicroVAX II's and such. I remember wandering the shelves and seeing RX0n drive cabinets, whole pdp-11/44's, and other goodies that I didn't do anything about. What I did do was buy an SGI Iris 3130 with monitor -- nobody seemed to know what it was, but I got it to boot. I believe I paid $2k for that thing with 20" color monitor, and hauled it home in a friend's car. Fooled around with that for a couple months but something in the monitor went, probably a flyback. I decided by that time that I needed a Sun for a project I wanted to do when I returned to college (anybody remember UCB's Sprite?), so I sold the thing with a dead monitor for the same price. Who knows, maybe I could have gotten more, the thing was loaded with bitplane and Geometry Engine boards. But the weird System III derivative OS really put me off at the time. Manys the time I've wished I could go back in time and raid those shelves, or browse through the tables of electronics parts... --Steve.

22 years, 10 months

14
32
0 0

in need of manuals

by abrandin＠adelphia.net

Hello Fritz, I am looking for various manuals: DPS 7 / various series / France DPS-90 DPS 9000 / French DPS 6 PLUS / series 402, 410, 420 / USA DPS 6 / various series / USA I would really appreciate any help that you could provide. Sincerely, Alice Brandin

22 years, 10 months

1
0
0 0

IBM 5100 tinkering

by hansp＠citem.org

We did some tinkering with our IBM 5100 the other day with results which might be of interest. Our 5100 is a model A4; it has 64Kbytes of memory and APL (only). When we opened up the beastie for a service a year or so ago and speculated on the fact that there were no empty slots in the card cage (we do seem to have every built-in option made) which led us to propose that perhaps the BASIC interpreter was also included but made unavailable by the absence of the language selector switch on the front panel. Examining the cable harness behind the panel showed a particularly thick section encased in insulation tape just behind where the language select switch would be installed and tempting evidence of one, possibly two unconnected wires. At that time we went no further. This week we were prompted to revisit the 5100 with a view of seeing if we could in fact run BASIC. Carfully cutting open the insulating tape around the cable harness behind the language select switch position revealed two unconnected wires complete with tiny push on connectors. We jumpered the two wires, powered on the machine and waited with bated breath. Following the familiar self-test display we were presented with an unfamiliar prompt, not the APL one at all. A little fiddling with the keyboard quickly confirmed that we had BASIC operational! So at least the APL only versions of the 5100 are configured with the BASIC interpreter which is disabled simply by the absence of the language select switch. Our IBM engineer speculates that the reverse is not the case : the BASIC only configuration does not include the APL ROM code. Anyone care to experiment and confirm that? We are now installing a language select switch (though alas not of the same type as the others) and look forward to playing with BASIC on the machine. Does anyone know the price difference between the A4 and C4 models? I would hazard a guess that that switch cost several hundered dollars at least ;-) Oh, what prompted us to revist the 5100? We recently acquired a Commodore PET 2001 and on compiling some techinal notes for it found a web site stating that the PET was 2 to 3 times faster than the 5100. That statemnet surprised me and I wanted to confirm it. Early indication show that the two machines are remarkably alike in performance (another suprise) the following program runs in the same time (to the second) on both machines : 10 a = 0 20 print a, a*a, sqr(a) 30 a = a + 1 40 if a < 100 goto 20 50 stop The 5100 seems about 30% faster on though with the following program: 10 a = 0 20 b = a*a 25 c = sqr(a) 30 a = a + 1 40 if a < 100 goto 20 50 stop So it seems it is the display which slows it down. Regards, -- hbp

22 years, 10 months

7
12
0 0

need EISA config util for Everex STEP

by bear＠typewritten.org

I have an Everex STEPcube (12-slot, 80486) that I need a copy of the EISA config utility for. Apparently this was available until about a year ago as a download from everex.com. The site is now defunct. Failing the "correct" ECU I could experiment with another ECU, given just the CFG file for the motherboard. That file would be on the ECU disk, but I could also use it by itself (!EVX0101.CFG), in the absence of the complete ECU. Can anybody help? Thanks! ok bear

22 years, 10 months

1
0
0 0

ALLIED SEMICONDUCTOR

by JOHN＠ALLIEDSEMI.COM

EG150S-V = $29.00 Power supply question Bryan Pope cctech(a)classiccmp.org Mon Apr 7 23:40:42 2003 a.. Previous message: H89 CP/M hard-secored boot diskette b.. Next message: Need info HP 28S c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ----------------------------------------------------------------------------- --- Hello all, Has anyone heard of the Enermax power supplys? The model number from the (now non-working) is EG150S-V. The special thing about this supply is its size: 4" W X 5" D X 2.5" H Thanks for any help!, Bryan ----------------------------------------------------------------------------- --- a.. Previous message: H89 CP/M hard-secored boot diskette b.. Next message: Need info HP 28S c.. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] JOHN JOOST ALLIED SEMICONDUCTOR CORP. 800-834-0109 X101 DIRECT 469-241-9022 FAX 469-241-9825 JOHN(a)ALLIEDSEMI.COM

22 years, 10 months

1
0
0 0

Logic Analyzer Pod Probes / Scope

by cbajpai＠comcast.net

I'm buying a Tektronix Logic Analyzer that has pods, but none of the test leads from the pod to the probe. They don't come up ebay often and when they do they are very expensive, almost as much as the logic analyzer itself. Any ideas on alternative sources for used probes or other makeshift alternatives? Also, anyone got a cheap (but good) oscilloscope they want to sell? I need some test equipment to attempt to diagnose some vintage hardware problems. Thanks, Chandra

22 years, 10 months

1
0
0 0

Best way to Sell Old, Used Software and SW/dev Books w/little Collectible Value?

by dwallace＠m-net.arbornet.org

Hi, My first time posting here - apologies if I should have RTFM first on this topic. I have a mountain of dated (late 80s - early 90s vintage) and probably non-collectible software packages and books that it seems to me would be a waste to consign to a landfill. I mean stuff like: Clipper 5.2 Corel Draw (Win 3.1) Version 4 Quattro Pro for DOS Ami Pro for Win 3.1 Star Trek Screen Saver (ca. 1992) Borland C++ 3.1 for Windows and DOS with Application Frameworks Books such as "advanced c-struct programming" (OOP on C), Peter Norton's "Inside OS/2", Alan Holub's "Compiler Design in C", several different DOS and BIOS interrupt references, a book on device drivers for DOS (yechhh!)... When I think of all the money I squandered on this cr$p in past years so I could stay in place with idiot employers and not even advance, I want to go GAAAAH! I *also* want, if possible, to make a buck or two off the lot or individually, and remove it from my view and from my basement. The Rubbermaid containers it's in are probably worth much more than this stuff is worth. Maybe. I doubt that most of this stuff is even worth paying the advertising fee on Ebay, and there's a LOT of it. Maybe the thing to do would be to advertise a few of the "better" pieces (like the Holub book) on Ebay, and in that ad on Ebay link to "other articles for sale". Just to generate traffic from the Ebay placement. Ideas? Know of any brokers that would take the entire lot? Or, know of any Luddite communities that eschew sinful protected mode OSs in favor of simple, uncomplicated DOS and 286 level software that penalizes the sinful user with random lockups? :-) OK, that was reaching... Thanks!

22 years, 10 months

3
4
0 0

pdp-8 serial numbers...

by mross666＠hotmail.com

Can anyone shed light... my 8/L has a serial number plate on the rear, with *two* numbers stamped on it, thus: 1127 963 How does that decode? Which, if either of those, is the real serial? TIA Mike (Very busy renovating the corestore website - much much more old computer stuff going up in the next few days!) http://www.corestore.org _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

22 years, 10 months

2
1
0 0

Intel 310?

by Innfogra＠aol.com

I am finally back online. July is a busy month for me as I wear several hats at the Oregon Country Fair and it occupies me for more than a month. I still have 4 intel 310 chassis, I can't seem to part with them and I have no idea what to do with them. They are good for industrial control as mentioned. I ran across a pair of 310s in the communication room of Fiji Telecom that I think are still there. It is a great development chassis in Multibus 1. Six slot desktop, 5 1/4" floppy and HD and sometimes a 1/4' tape drive. In the 1980s there were lots of different Multibus cards out there. I am surprised there are few in collections. We probably did trash more than a hundred in the late 1980s when we were buying truckloads of intel stuff. We sold a huge lot to InBus in the early 90s. As to the question of cracking a Xenix System? I have yet to figure that out myself. I was hoping someone out there had the secret or did it die with Larry? Paxton Astoria, OR

22 years, 10 months

1
0
0 0

Want to buy Kaypro 10

by vcf＠siconic.com

I'm looking for a nice, shiny, clean, preferably working Kaypro 10 that I'm willing to pay decent money for or trade for something nice. If you've got such a thing and are willing to trade or sell it then please e-mail me. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

22 years, 10 months

2
1
0 0

Analog computer article

by mranalog＠comcast.net

Hi All, If you are interested in building your own analog computer or just interested learning more about how an analog computer works, I found a PDF version of a 4 part construction article on the web. The article, I believe, is from Practical Electronics Magazine (UK) (date unknown, probably late 1970s). The amplifiers are 741 opamps. And the amplifiers even have overvoltage indicators which is a sophisticated feature usually found only on commercial computers. Part 1 is how an analog computer works Part 2 is construction details Part 3 is wiring and testing and Part 4 is programming and special circuits The file 2.25 MB Kronis, P., "Analogue Computer", Parts 1, 2, 3, 4 http://patrik.unx.nu/tech/analog_dator/anacomp.pdf --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================

22 years, 10 months

2
2
0 0

HP 9877 Tape Memory /Duplicator was Re: 09877-10002

by vp＠mcs.drexel.edu

In cctalk-703, Joe <rigdonj(a)cfl.rr.com> wrote: > The drive systems are widely available in the surplus market and are > cheap. In fact, since you're a government agency you could get them for > nothing from other government agencies that are surplussing them. I > would recommend the HP 9121 S or D disk drives. They're small, > reliable and use standard 720k 3.5" floppy disks. The S drive is a > single drive and the D drives have two drives in them. I thnk you'll > need one of the option ROMs in order to use the floppy dirves but those > are also available surplus and again you could probably get all you > need from other agencies for free. There are a LOT of 9825s out there. I have talked with these guys as well and their problem is getting the files off their last working tape. james.clements(a)robins.af.mil wrote: > Apparently there are some files that are protected some way. It will > not allow us to copy all the files. Some copy fine others do not. I didn't know you could have protected files in the 9825, but if they have tried and failed, then we need to explore other ways of getting these files off the tape. So I was thinking, can another machine (e.g. HP 85) read 9825 tapes? I think the tape mechanism is the same, but I am not sure about the way data is organized on the tape. Thanks **vp

22 years, 10 months

2
1
0 0

Intel 310?

by aek＠spies.com

>Does anyone else on the list have one of these? If so does it still work? -- I think Paxton does, but he's stopped replying to my emails.

22 years, 10 months

2
1
0 0

Intel 310?

by rigdonj＠cfl.rr.com

I've spent part of the last two days working on an Intel 310 that I found in a scrap place and finally got it working. I'm just wondering how common thse are. I searched the net and didn't find any on any web sites but a number of people's resumes mentioned using them at one time. Does anyone else on the list have one of these? If so does it still work? There's good picture of one at <http://valinor.ca/in310a.jpg>. Even thought they're in a desktop case, they still used Multibus cards. They ran either iRMX or XENIX (Mine has XENIX installed). Joe

22 years, 10 months

3
3
0 0

OT: Paging James Willing

by patrick＠evocative.com

Jim, I've sent you a couple of messages, no replies... are you out there? Has anyone else heard from Jim recently (last two weeks)? --Patrick

22 years, 10 months

1
0
0 0

How to break into a XENIX system?

by julesrichardsonuk＠yahoo.co.uk

> There's ten serial ports on it and they're numbered J20 to J32. > You'd think that the system port would be the lowest or maybe the > highest numbered port but Nooo, it's J31! My NCR Unix Tower has two 'special' serial ports on the back; ISTR that port B is the console, and port A is for a remote diagnostic modem. It's possible your system has a similar I suppose, and J32 is for a modem... > There's lots of bad blocks and such on the drive. I'm wondering if I should > just install iRMX on it and forget it. Comments? In situations like that I tend to pull the drive, drop it in a Linux system and grab a raw image of the disk to a file. At least then I have the data, even if accessing it can be a little complex. Format the drive then by all means, but if it has bad blocks it sounds like it might not be too healthy anyway... cheers Jules ===== Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

1
0
0 0

shugart 900-2 and 902 disk drives?

by dwightk.elvey＠amd.com

>From: Joe <rigdonj(a)cfl.rr.com> > > Does anyone know exactly what these are and how they differ from the >800/801 drives? The general specs( 8" FH 800k) are the same. > > Joe > Hi Joe The 900 series have a different connector for the cable. Instead of a .100 50 pin, it uses a .156 44 pin connector. I don't know about the 902 though. As I recall, it should be similar to the 800's. I have a 900 series drive in my Nicolet NC-80. If you have an extra, I've been looking to expand my machine to a dual floppy. Doing disk copies are a real pain. The machine has only 12Kx20 of core memory. Not much room for a bunch of disk buffers. Dwight

22 years, 10 months

1
0
0 0

shugart 900-2 and 902 disk drives?

by rigdonj＠cfl.rr.com

Does anyone know exactly what these are and how they differ from the 800/801 drives? The general specs( 8" FH 800k) are the same. Joe

22 years, 10 months

1
0
0 0

How to break into a XENIX system?

by rigdonj＠cfl.rr.com

I had some time to kill this morning so I drove over to the warehouse and worked on the Intel 310 and I finally got it running. As I suspected, the HD controller was mis-configured and I also got lucky and found the proper port for the system console. There's ten serial ports on it and they're numbered J20 to J32. You'd think that the system port would be the lowest or maybe the highest numbered port but Nooo, it's J31! I read through the few Intel 310 manuals that I have last night and they're not much help but they at least gave me the proper baud rate, parity, etc so that elimenated one unknown. Played around with the SDM and ROM diagnostics and all the hardware checks out perfectly. The bad news that the 310 has XENIX installed :-( I also couldn't log into the system as a user or super user since i don't know the account names or passwords. Does anyone have any idea how to break into a XENIX system? It's XENIX 286 -W- Version 3.0. There's lots of bad blocks and such on the drive. I'm wondering if I should just install iRMX on it and forget it. Comments? Joe

22 years, 10 months

1
0
0 0

NeXT Cable

by jkersey＠scoab.com

Hi, I saw your posting on a mail archive about having the cable that goes >from a NeXTStation to the monitor, you wouldn't happen to still have this would you? Thanks, and sorry for the intrusion, Jim -- Jim Kersey Scoab Interactive http://www.scoab.com

22 years, 10 months

4
5
0 0

CFX-400 Case

by wrawbee＠hotmail.com

Stan, I've done some calling around and emailing. Casio has four distributors that they send replacement parts to. None of them have the case in stock. The last time a case was sold from Casio was on April 30, 1996. It was to an individual, not a distributor. The CFX-400 case with key pad has two part numbers. The first is 73081910. It was later changed to 73081928, but it is the same part and description. There are two parts still in production and available from Casio that you may want to consider buying. They are the rubber backing seal and the LCD (not the module, just the screen). Good Luck. _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail

22 years, 10 months

1
0
0 0

Old CFX-400 cases

by wrawbee＠hotmail.com

Stan, I'm guessing you decided not to trade or sell any of your parts to me. Perhaps you got a better offer or you were offended by mine. I hope I didn't offend you, but if someone offered you a bunch of money for them that's great. If you just decided to hang on to them or something, please keep my email address in case you ever do decide to part with any parts or if you are ever looking for a nice CFX-40 as a backup or replacement. Thanks. _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail

22 years, 10 months

1
0
0 0

Tektronix 8002

by rigdonj＠cfl.rr.com

I found this site <http://www.sunyit.edu/~cet/FACILITIES.HTML> whi;le searching for something else. They have three Tek 8002s and may be able to provide copies of docs for them. If you contact them, let me know your results. Joe

22 years, 10 months

1
0
0 0

Free: Tektronix RM31A, near Santa Cruz, CA

by tothwolf＠concentric.net

I guess this is slightly OT, but I figure someone here might be interested. I'd love to have the scope myself, but it is rather heavy, and shipping it to Houston would be risky due to the huge number of tubes. (Close to 50 individual tubes IIRC.) This is a rack-mount scope, and it comes with a type CA plug-in. It is located near Santa Cruz, CA just south of Silicon Valley. If anyone is interested, contact me off-list and I will pass on contact information. -Toth

22 years, 10 months

1
1
0 0

PET 2001 16 N Mystery

by dwightk.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk > >> I wish to pose this question with the hope that there is someone >> else who has had the same thing happen to them, and/or can suggest >> a cause/fix.. >> >> I have a Commodore PET 2001 16 N. Whenever I try to write or read >> from tape (using 1530 drive) the computer freezes up and I am forced >> to turn off/on. After powering the unit back on, the screen is filled > >This sounds like a power supply problem -- the extra load of the tape >drive motor is pulling the unregulated supply down, which is then >causeing the 5V line to drop too low. > >Many PETs have a white Molex 0.156" power connector on the mainboard, the >socket part of which is wired to the transformer and smoothing capacitors >mounted seprately in the case. This connector is somewhat under-rated, >and tends to go high resistance and overheat. If the plastic has started >to turn brown, this is one of your problems. Hi Put DC#4 on the pins and don't worry about it. Dwight > >Either replace the connector, or remove it completely and solder the >wires directly to the main PCB (you might then want to add an in-line >connector of a suitable rating to aid future servicing). > >Also, check the smoothing capacitors (particularly the large ones mounted >off the main PCB). It's possible one of those has dried up. > >-tony

22 years, 10 months

1
0
0 0

PET 2001 16 N Mystery

by Degnan＠degnanco.net

I wish to pose this question with the hope that there is someone else who has had the same thing happen to them, and/or can suggest a cause/fix.. I have a Commodore PET 2001 16 N. Whenever I try to write or read >from tape (using 1530 drive) the computer freezes up and I am forced to turn off/on. After powering the unit back on, the screen is filled with garbled characters. Turing off/on does not fix. However if I wait a day or two later the computer is OK and the garbled characters no longer appear. I have reproduced this series of events twice and again the computer "fixes itself." I do not want to try again for fear of permanently ruining the machine. Any ideas about what causes this? Anyone had this happen to them?

22 years, 10 months

2
1
0 0

Emulex SC04 controller... what kind of disk does it talk to?

by CordaAJ＠NSWC.NAVY.MIL

Actually, if I had known you had a bid in on it, I wouldn't have bid against you... Because of my cr*ppy phone connection (no dsl/cable here) I use an online bidding service, so when I find an item, I just register it with the bidding service and forget about it... they email me at the end of the auction to let me know if I've won or lost... But to get back on topic, I can then assume that this was one of those flash-in-the-pan ANSI standards? I've been around quite a while, and I don't remember coming across this one... (and I remember MASSBUS, IPI, SMD, MFM, ESDI, and a handful of other abbreviation...) Oh well, another board for the board-archive/stack... -al- -----Original Message----- From: Al Kossow [mailto:aek@spies.com] Sent: Thursday, July 31, 2003 2:49 PM To: classiccmp(a)classiccmp.org Subject: Re: Emulex SC04 controller... what kind of disk does it talk to? anyone recognize this puppy? -- yup.. ANSI 8" interface I was VERY happy someone outbid me on it when I discovered what it was.. If someone has a paper copy of the X3.101 spec, i'd like to add it to the archives on spies. It appears to be based on the Shugart/Quantum 8" drive standard but on a single 50 pin connector instead of a 50 and 26.

22 years, 10 months

1
0
0 0

Emulex SC04 controller... what kind of disk does it talk to?

by CordaAJ＠NSWC.NAVY.MIL

Hey guys, Just picked up an Emulex SC04 disk controller (ebay item). I thoughtit was a Qbus SCSI (did a prelim. deja search, and the one note I came across led me to believe this). Apparently I was wrong... the part numberfor the controller is SC0410201-LXB, and (I believe, but I couldbe wrong) this maps to the .pdf on AEK's site: http://www.spies.com/~aek/pdf/emulex/SC0451001-A_SC04C_Jan82.pdf This manual provides a pinout and refers to the disk interface as an ANSI X3T9/1226 interface. This doesn't google to anything useful, however I found an identical pinout list which refers to an ANSI X3.101 interface. Again, I don't recognize this at all. It's definitely not SCSI (if this is the correct manual) and doesn't seem to be SMD... Perhaps I am just blind here... anyone recognize this puppy? For reference, the ebay page w/picture is still available... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2743862622 -al- -acorda(a)1bigred.com

22 years, 10 months

1
0
0 0

Quantum Lightning 540 AT Hard Disk

by julesrichardsonuk＠yahoo.co.uk

> I have an old Quantum Lightning 540 AT hard disk ... > However, now, having tried to install the drive in a > more modern machine to archive the data to CDR, the > drive while recognized by the machine and the drive > itself spinning up and apparently working returns a > "hard disk read failure" error. Well it has drive to the spindle motor by the sounds of it. Whether the head assembly is intact is another matter. I think you can swap the boards on these things and expect them to still work - so using the combination of your chassis / motor / platter assembly and the logic board off a good drive might be enough - unless it is a fault in the head assembly. I have a Prodrive LPS 540AT in front of me right now which is likely the same thing as a Lightning. There seems to be just the one ribbon cable connecting the logic board to everything so a swap wouldn't be tricky and might cure things. Those drives used to be everywhere at one point so finding one shouldn't be too hard. Do double-check your drive cabling and BIOS settings (assuming it's a PC you're hooking up to) etc. - modern PC's seem to have a few billion settings for the disks and probably think you're using a new drive; they may make incorrect assumptions about data rates etc. > Can anybody point me in the direction of any good > information regarding the testing/diagnosis/repair of > head-disk-assembly problems? I know Western Digital used to release diagnostic utilities for their drives and held them on their website; there may be similar Quantum ones floating around. cheers Jules ===== Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

2
1
0 0

Help with RT-11 'Split' Utility

by skidmore＠worldvenue.org

I am having problems with the unsupported 'split' utility on a PDP-11/23+ running RT-11 5.03 I am trying to split a 35000 block file into 3 files of similar sizes. I understand that you use octal values for block boundaries. Here is the command line that I have been using unsuccessfully: The octal value of 35000 is 104270. .split bak1.dsk,bak2.dsk,bak3.dsk=jul28.dsk/b:34757:69513 (where 69513 = 104270-34757) However, I receive the following error: ?SPLIT-E-Invalid command I need some help on how to specify the block boundaries. Thanks, Barry -- Barry Skidmore <skidmore(a)worldvenue.org>

22 years, 10 months

2
1
0 0

NeXT Cable

by jkersey＠scoab.com

Hello, Sorry about that, I didn't realize I was posting to a list! :-) I actually sent off an order Wednesday morning to Black Hole Inc. for a monitor cable, keyboard, and mouse... My thanks to everyone who responded. Jim -- Jim Kersey Scoab Interactive http://www.scoab.com

22 years, 10 months

1
0
0 0

Best way to Sell Old, Used Software and SW/dev Books w/little Collectible Value?

by Edward.Tillman＠valero.com

I don't think I'm exactly local to you, but if you wouldn't mind selling via mail, please contact me offlist at ETILLMAN(a)satx.rr.com or edward.tillman(a)valero.com. I have a 1992 DEC Slimline 486/33DX that'd probably just love those apps! (Especially the Star Trek screen saver!) On that system, I'm DOS 6.22, WIndows 3.1, Office 4.0. Cheers! Ed Tillman Store Automation Tech Support Specialist Valero Energy Corporation San Antonio, Texas, USA Office: (210)592-3110, Fax (210)592-2048 Email: edward.tillman(a)valero.com <mailto:edward.tillman@valero.com> -----Original Message----- From: Mike Ford [mailto:mikeford@socal.rr.com] Sent: Thursday, July 31, 2003 3:57 AM To: cctech(a)classiccmp.org Subject: Re: Best way to Sell Old, Used Software and SW/dev Books w/little Collectible Value? At 10:29 PM 7/27/03 -0400, Don Wallace wrote: >I have a mountain of dated (late 80s - early 90s vintage) and probably >non-collectible software packages and books that it seems to me would >be a waste to consign to a landfill. > >I mean stuff like: > >Clipper 5.2 >Corel Draw (Win 3.1) Version 4 >Quattro Pro for DOS >Ami Pro for Win 3.1 >Star Trek Screen Saver (ca. 1992) >Borland C++ 3.1 for Windows and DOS with Application Frameworks Nothing beats making a complete list of what you have, and giving your general location in hopes of a local sale.

22 years, 10 months

1
0
0 0

IMSAI Restoration Suggestions?

by dwightk.elvey＠amd.com

>From: "Martin Scott Goldberg" <wgungfu(a)csd.uwm.edu> > >I'm hoping someone on the list can help. I rescued an IMSAI 8080, as well >as a large (and heavy) dual 8" drive chasis (fully enclosed). > >The IMSAI is stocked full of cards which I haven't figured out what they >are yet as they're in pretty tight and I'm afraid of breaking something >yanking them out. I'm assuming at least one of them is a terminal >interface card and another an interface for the drives. > >Here's the two problems with the unit though: > >1) It appears to be missing the main processor card. Everything else >looks mint, including the control panel and the ribbon from the pannel >to the control/processor card is intact as well. Hi It sounds like it is missing the processor card. Still, it may have one but it doesn't interface with the front panel. The only signals that run through the ribbon are data signals. All of the rest go through the bus. This means that if you don't need the ability to used that readouts of the panel, you can do things like reset and run without the ribbon. Check to see if there is some other processor card there. I see original 8080 cards on ebay often but there were many second source Z80 cards with the ribbon cable connector made as well. I see these very often on ebay. Just keep an eye out. > >2) The people (the university janitorial staff) that were throwing it out, >cut off the power cord. Hence there is a stub of a cord connected to the >power supply now running out the back. So, install a new cord. > > >I'm basicly looking for any help/suggestions in how to indentify the cards >and what I can do to fix the other two problems. Thanks! Take pictures. Put them on a web page. Note any text found on boards. Dwight > > > >Marty

22 years, 10 months

2
2
0 0

Simplest (practical) file system?

by mbg＠TheWorld.com

On Sun, 27 Jul 2003, Bob Shannon wrote: One such way: >Have some portion of the disk set aside for a fixed number of directory >entries (the "directory"). This is what RT-11 does, a fixed number of blocks (512 bytes each) are set aside as the directory. They are read/written in two-block units, called directory segments, and each segment can handle up to 72 directory entries. >Each directory entry has a certain number of characters for a filename >(12 is good), a file type byte, a status byte, and a pointer to the >portion of the disk where the file is stored. It might also contain the date and time the file was created, or accessed, or updated. RT only contains the creation date. There was some thought at one point of getting it to record creation time as well, but was never done by DEC. Also, RT is a single-user system with the capability of having multiple jobs running, so for tentative files (ones which haven't closed yet), there is information kept in the entry about the channel on which the file is open. >The file data is then stored on consecutive sectors, with the last one or >two words (depending on word size implemented) pointing to the next >sector of the file. Zero values means "end of file". Or, as RT did, you have the size of the file in the directory entry, so a file exists in the contiguous blocks 'start' to 'start+size-1'. RT also keeps track of the end of a segment so that the directory segments can be linked in any order as files are created and deleted. Of course, a more simple method would be to treat the entire directory as a contiguous set of entries and then you only need an indication of the end of the directory. The status info can also keep track of read-only vs. read-write files, protected files, files which should not be moved in a 'SQUEEZE' operation, etc. >There also needs to be a map somewhere specifying which >sectors are free/used. That can be a lot of overhead, and can take up a fair amount of disk space depending on how it is implemented, and with each directory entry having start and size, it isn't needed. With the contiguous file system on RT, one *can* extend a file, though it either takes intimate knowledge of the directory structure on the part of the program, or extra code to open a new copy of the file (larger), copy everything from the old version to the new, closing the old, updating the new one and closing the new. A program with intimate knowledge of the directory would have to find the entry for the file, check the next entry and if it is an empty space, it could increase the file size (up to the size of the empty) so long as it decreased the size of the empty by the same amount. Of course if the next entry is not empty, then you have to revert to the first method. A program on RT can ask to create a file: 1) a specific size, or 2) half the largest free space on the disk or the second largest free space (whichever is greater). RT attempted to fulfill requests for specific sizes using a best-fit algorithm which attempted to maximize disk usage by minimizing the size of free space between allocated files. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com | | Member of Technical Staff | megan at savaje.com | | SavaJe Technologies, Inc. | (s/ at /@/) | | 100 Apollo Drive | URL: http://world.std.com/~mbg/ | | Chelmsford, MA 01460 | "pdp-11 programmer - some assembler | | (978) 256 6521 (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

22 years, 10 months

11
24
0 0

Tek 466

by john37p2＠earthlink.net

Have you any idea of how I can get schematics for Tek 466 scope? I see you have one and if I can't find schematics I might as well sell the thing. Regards, john Hannahs Corrales, NM

22 years, 10 months

2
1
0 0

Alpha Micro 1000?

by larry＠laurelnet.com

Joe, The AM systems did not detect the presence of a terminal, so this would not inhibit booting. IIRC, the six is not a six, it is a lower case B (for "booting"). It is probably looking for directory structure and a monitor file on the disk. You can use any VCR on the video in/out ports, but unless you have one of the AM VideoTrax[1] VCRs you will have to manually press "Play", "Record", etc.. I think I have one of these laying around, but when I tried to use it as a plain ol' VCR a few years back it didn't work. I think I can still get in touch with someone who is a walking tech reference for all things AlphaMicro. If you like, I will try to contact him and see if he will talk to you. Let me know. Larry [1] The VideoTrax was a Zenith unit modified by AM to get the transport control signals from the computer. -----Original Message----- From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On Behalf Of Joe Sent: Wednesday, July 30, 2003 3:38 PM To: cctalk(a)classiccmp.org Subject: Alpha Micro 1000? Is anyone familar with this system? I can't find anything on AM's site and only one brief description on the net. I know it runs AMOS and has a 68000 CPU. This one has a 190 Mb hard drive and appears to have 4 Mb of RAM. It also has a PIICEON add-in card that adds 8 additional serial ports. It's also hanging up with a status code of 6 when I power it up. There' s no terminal attached so that MIGHT be the problem. I found a manula for a new AM system and it doesn't list a stat code of 6. Does anyone have a list of the codes for this system? Anybody know where I can find an Owner's or user's manual for this? Or what are the Video In, Video Out and Video I/O ports for? Joe

22 years, 10 months

1
0
0 0

apple corvus drive

by jakef＠mrF.Freek.NET

Hi, I saw you post on a list about a corvus harddriver for an apple, do you still have it, or could you pust me in contact with how has it now? I have the driver but need the software, and have been looking for it off and on for a year. thanks jake-F

22 years, 10 months

1
0
0 0

KC Computer Swap Shop?

by k_m34＠yahoo.com

If you're still in town, be sure to go by <a href="http://www.surplusexchange.org">Surplus Exchange</a>! They get all kinds of cool stuff, and there's usually some really cool geek types in there browsing around. Jon.

22 years, 10 months

1
0
0 0

Nettrek

by 2dancers＠themacisp.net

I have NetTrek on my Mac se. Do you still want a copy? Stephen

22 years, 10 months

1
0
0 0

Fwd: More stuff

by jfoust＠foust.org

>Date: Mon, 28 Jul 2003 12:25:18 -0600 >From: Eldon Vore <jvore(a)acsol.net> >To: John Foust <jfoust(a)foust.org> >Subject: More stuff > >[...] just to ask if you have any interest in Datapoint computer peripherals? My friend Bob Saturday was cleaning out his storage room and found a Datapoint dual 8" floppy drive box, with two god awful heavy power supplies, and two Shugart drives plus associated electronics. The box is 24x21 1/2x6 1/2 inches. It weighs 70 lbs. There seems to be a lot of litigation going on involving Datapoint, formerly Computer terminals, Inc., I think. Any way, if you have an interest let me know or I guess the next stop for them in the county dump. Eldon Vore, jvore(a)acsol.net.

22 years, 10 months

1
0
0 0

PDP-11 Freeware CDs for RSX-11 and RT-11 (Originally Produced by Tim Shoppa)

by jhfinexgs2＠compsys.to

The last two times I posted this, another person contacted me either for help or to request the CDs. This will be the last time for about 4 months unless more people reply. In regard to the Freeware CDs for RSX-11 and RT-11 that Tim Shoppa originally produced: I am in the middle of finishing a third (very small) batch of CDs and could easily add a few additional copies. If you wish to be added to the list, please respond immediately. Otherwise, this is likely to be the last time for at least a few months. I will be making all copies of the CD images from: ftp://ftp.trailing-edge.com/pub/cd-images/ http://www.classiccmp.org/PDP-11/RT-11/ http://www.classiccmp.org/PDP-11/RSX-11/ Since not everyone has both a high speed internet connection and a CD burner, I thought it would be helpful to make them available. If you have both requirements and are using Windows 98 SE / Nero Burning, I can help with the details if you don't know how to burn a CD from an "Image File". I have even been able to produce a label for each CD that is close to the original label from Tim Shoppa, although since they were scanned (THANK YOU FOR THE HELP), they are not perfect. They are available at $ 6 / $ 10 / $ 14 for 1 / 2 / 3 CDs. In addition, I understand that Memorex Black CD-Rs have a longer shelf life and are available at Business Depot. If anyone wants those instead, add $ 1 for each CD that you are requesting. Thus those amounts are $ 7 / $ 12 / $ 17 Please contact me directly for my snail mail address. I picked up some Memorex Black CD-R blanks and started on the copies for those who have already requested that a Black CD-R be used. Please include your mailing address!!!!!!!!!!!!!!!!!!! In general, I will regard any funds you send as a gift so that if anyone really can't afford the CDs, please state why that is so. Outside of the US, probably about $ 2 should be sufficient for extra postage. All amounts are in US dollars. Please ask if you are not in the US. No point in converting twice. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.

22 years, 10 months

1
0
0 0

Alpha Micro 1000?

by Innfogra＠aol.com

In a message dated 7/30/03 12:40:21 PM Pacific Daylight Time, rigdonj(a)cfl.rr.com writes: > Anybody know where I can find an Owner's or user's manual for this? Or > what are the Video In, Video Out and Video I/O ports for? > Probably for a VCR backup tape unit. They used them quite a lot. Paxton Astoria

22 years, 10 months

3
3
0 0

anybody need MANUALS for a Storage Tech Tape Subsystem?

by rigdonj＠cfl.rr.com

Went scrounging today and one of the things that I picked up is a FAT three ring binder full of Field Engineering manuals for the Storage Technology Corp model 1960 Series Tape Subsystem. Includes the FE Maintenance manual, Illustrated Parts Catalog, Part Number Compatiblity Listing (breaks down ALL of the engineerng changes and their PN effectivity), something called a Master Machine Level Listing, a User's Guide for 1900 Diagnostics, a pamplet about "Communicating with the Monitor", an OEM Maintenance Reference Guide and one more book that's missing it's title page. Looks like everything you could ever need for the STC 1960 Tape system. Everything in a three ring binder marked "STC Field Engineering". The docs are a good three inches thick. Anybody want it? Preference given to those that can archive/scan it and make it available to others. You pay the postage. Joe

22 years, 10 months

1
0
0 0

Epson QX-10 Hard disk, NOS

by Innfogra＠aol.com

Surprisingly I have a New Comrex ComFiler Hard disk subsystem on eBay and it doesn't even have one bid with seven hours to go. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2743819844&category=1247& rd=1 New old stock (NOS) in it's original carton, instructions, circuit card for the Epson QX-10 cables and an external 10 meg hard drive. Starting at $24.95 plus shipping which I think reasonable. Paxton Astoria, OR 97103

22 years, 10 months

2
2
0 0

Alpha Micro 1000?

by rigdonj＠cfl.rr.com

Is anyone familar with this system? I can't find anything on AM's site and only one brief description on the net. I know it runs AMOS and has a 68000 CPU. This one has a 190 Mb hard drive and appears to have 4 Mb of RAM. It also has a PIICEON add-in card that adds 8 additional serial ports. It's also hanging up with a status code of 6 when I power it up. There' s no terminal attached so that MIGHT be the problem. I found a manula for a new AM system and it doesn't list a stat code of 6. Does anyone have a list of the codes for this system? Anybody know where I can find an Owner's or user's manual for this? Or what are the Video In, Video Out and Video I/O ports for? Joe

22 years, 10 months

4
4
0 0

Quantum Lightning 540 AT Hard Disk

by roger161uk＠yahoo.co.uk

I have an old Quantum Lightning 540 AT hard disk containing some data I want to retrieve. The drive itself was removed from a computer some years ago (about 7 or 8 years), working as far as I remember. However, now, having tried to install the drive in a more modern machine to archive the data to CDR, the drive while recognized by the machine and the drive itself spinning up and apparently working returns a "hard disk read failure" error. Trawling the web, I found a short thread entitled "HD repair techniques" on cctalk. Like the original author of this thread, I too have a drive that contains data that is perhaps not worth the hundreds of pounds (GBP) that professional data recovery entails but wouldn't mind recovering the data all the same. Can anybody point me in the direction of any good information regarding the testing/diagnosis/repair of head-disk-assembly problems? Roger

22 years, 10 months

8
11
0 0

Tek 8002 system : some questions

by jos.mar＠bluewin.ch

I have a few questions on this old beast : Does it work with another terminal than the tek4024 ? What are default baudrates... Are manuals online or available ? Any info welcome...... Thanks, Jos

22 years, 10 months

6
6
0 0

Places to acquire s100 items

by SPEDRAJA＠ono.com

Hi all. I'm thinking in purchase one IMSAI Series Two. I should like to locate some s100 items (boards, etc) to use with it. Somebody knows where ? Greetings Sergio

22 years, 10 months

3
2
0 0

Have any 387Sx-16's left?

by cb＠mythtech.net

woops, that was supposed to be offlist... sorry everyone. -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Have any 387Sx-16's left?

by cb＠mythtech.net

>I am a grad student at UC Berkeley and I could use one of your >387sx-16's on a project I am working on. If you still have some and can >spare one, I am in the mechanical engineering department at: I don't have any at this exact moment, but I may come across more of them in the future. Do you have a deadline by which you need the chips, or is it just something you want to get eventually? (ie: should I hang on to your address and let you know if/when I get more, or will it be too late and you won't want or need them anymore). -chris <http://www.mythtech.net>

22 years, 10 months

1
0
0 0

Altair font - anyone identify?

by r.stek＠snet.net

I am attempting to make a reproduction name plate for an Altair 8800. I can try out various OCR-like fonts, but I was hoping that someone might have already identified the same or a similar font to the one used on the bottom of the front panel. If I can successfully do this, I'd certainly be willing to make them available to list members. Contest: who can come up with the cleverest place to put one of these OTHER than on the front of an Altair? Bob Stek Saver of Lost Sols

22 years, 10 months

1
0
0 0

Places to acquire s100 items

by dwightk.elvey＠amd.com

>From: "Sergio Pedraja Cabo" <SPEDRAJA(a)ono.com> > >Hi all. I'm thinking in purchase one IMSAI Series Two. >I should like to locate some s100 items (boards, etc) >to use with it. Somebody knows where ? > >Greetings > >Sergio > Ebay and swap meets. Dwight

22 years, 10 months

1
0
0 0

Future uncollectable computers...

by rdd＠rddavis.org

Hopefully this isn't too off-topic, but a thought just occured to me about computers that some may, or may not, want to collect in the future, which aren't classics yet. It seems that many of the newer computers have been designed with uncollectability, as well as a high degree of user-annoyance, in mind. Somehow, either some marketing idiots, or clueless enginers, got the idea to design computer equipment that's unstackable due to its rounded-off shape... the iMacs and some Compaq PeeCees (e.g. Presario 4814) come to mind. Is anyone going to be seriously interested in collecting computer equipment that can't be stacked, and does anyone actually find equipment that can't be stacked, or have anything stacked on top of it (not even a monitor or books, etc), to be other than an annoyance? -- Copyright (C) 2003 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty.

22 years, 10 months

19
45
0 0

Epson HX-20 for sale

by classiccmp＠vintage-computer.com

I've been contacted by a gentleman who is interested in selling an HX-20. He can be reached via email at katerad(a)earthlink.net. I think he wants around $50 for the machine, but don't quote me on that. I am just passing along this information and have nothing to do with the offer, the item or the seller. (insert other typical disclaimers here) Please contact Tom directly (katerad(a)earthlink.net) Good luck! Erik Klein www.vintage-computer.com/vcforum The Vintage Computer Forum >> Have available for sale: >> >> 1----EPSON HX-20 >> w/ micro cassette drive >> printer >> expansion unit (H20 EU) >> case >> >> This is a very clean unit. Is this of interest to you? >> If so, can send picture. >> >> Thank you ! >> >> Tom Gaida

22 years, 10 months

1
0
0 0

Pet 2001 N16 Display Problem

by Degnan＠degnanco.net

I have a Pet 2001 N16. When powered up, it displays a screen full of garbled characters. I read a message board post on http://www. classiccmp.org/pipermail/cctalk/2003-January/014761.html that recommended that I replace the 2114s (from bgmicro.com) to swap out the video RAM. Any opinions/suggestions? Has anyone had a similar experience? ???? D???@??

22 years, 10 months

2
1
0 0

HP 1615 Logic Analyser

by coredump＠gifford.co.uk

I've just got an HP 1615 Logic Analyser on eBay for a few pounds, but it doesn't come with probes. Now, HP probes occasionally show up on eBay, too -- but which ones do I need for the 1615? Does anybody happen to know, please? -- John Honniball coredump(a)gifford.co.uk

22 years, 10 months

3
2
0 0

Looking for Sharp pens

by Robert_Feldman＠jdedwards.com

A message dated 2003-06-28 at http://fixyourownprinter.com/printer/new/10274.html offers them for sale. -----Original Message----- From: Joe [mailto:rigdonj@cfl.rr.com] Sent: Monday, July 28, 2003 9:43 AM To: cctalk(a)classiccmp.org Subject: Re: Looking for Sharp pens Those MAY be the same pens that were used in the Radio Shack GCP-115 preinter/plotter and a printer/plotter that Atari sold. The last ones that I bought came from a surplus company (Electronics Goldmine or somebody like that) but that was about 10 years ago. Joe At 06:58 PM 7/28/03 +0100, you wrote: >In message <002801c353e9$6e95c3e0$b15a3b18@homebrew> > "Tom Lake" <tlake(a)twcny.rr.com> wrote: > >> Do you have any Sharp EA-850B (black) or EA-850C (color) pens available for >> sale? If so how many do you have and how much would you like for some? >I'm also after some of these pens - they're basically tiny ballpoints that >were used in the Sharp pen plotters, e.g. the CE-515P. > >Thanks. >-- >Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, >philpem(a)dsl.pipex.com | video mods, 10BaseT (i3 EtherLAN600), >http://www.philpem.dsl.pipex.com/ | 8xCD, framegrabber, teletext >Diagonally parked in a parallel universe.

22 years, 10 months

2
1
0 0

Stickers on 8 in floppys

by dwightk.elvey＠amd.com

>From: "Cynde Moya" <CyndeM(a)vulcan.com> > >I notice on 8 in disks that the label stickers are affixed on the front, along the top, and only to about 1/4 of the way down. > >I was thinking of affixing bar code labels to the disks. I would like to put them on the back, where they would permanently identify the item, yet do not interfere with possible future display of the disk fronts. > >But I don't know if this would, somehow, get in the way of the proper functioning of the disks. > >I thank you in advance for any comments or advice. Hi As long as they don't cover any of the holes or are mounted poorly such that they peel off, there is no issue with where you mount it. Of course, you need to be careful when mounting such that you don't damage the media ( such as using a ball point pen ). Dwight

22 years, 10 months

1
0
0 0

Stickers on 8 in floppys

by CyndeM＠vulcan.com

I notice on 8 in disks that the label stickers are affixed on the front, along the top, and only to about 1/4 of the way down. I was thinking of affixing bar code labels to the disks. I would like to put them on the back, where they would permanently identify the item, yet do not interfere with possible future display of the disk fronts. But I don't know if this would, somehow, get in the way of the proper functioning of the disks. I thank you in advance for any comments or advice. Cynde Moya, MLIS Archives Cataloguer Vulcan Inc. www.vulcan.com Office Tel. 206-223-4901 Mobile Tel. 206.369.3205 Fax. 206-223-4207

22 years, 10 months

1
0
0 0

Decdocs.org Site and contents

by SPEDRAJA＠ono.com

Hi. What happened finally with this website and its contents ? I offered to support it, but somebody in the USA had interest too and I leave to pass the matter. Greetings Sergio

22 years, 10 months

3
3
0 0

Found today..

by Lee.Davison＠merlincommunications.com

No box and no instructions but fully working and, apart >from a little dusty, in good condition a Commodore SR7949D scientific calculator. Price, nothing. I had already bought some things and had just pulled this out of a box and asked 'how much' only to be told take it. So I did. I like those prices. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

22 years, 10 months

2
1
0 0

Simplest (practical) file system

by aek＠spies.com

The biggest problem that I see here is that Bob wants to be able to use this OS on systems that have as little as 16k words but still use LARGE modern drives. -- I have been thinking about this a LOT lately relating to using older CPUs with few or none of the original peripherals, and it may make sense, since you're building an IDE interface anyway, to build a file level interface onto the card, rather than talking to the drive as an unstructured block device. The idea I've been toying with is building an interface card like this with a local processor, disc, ethernet, etc. and using it in conjuction with a remote system that would provide the console / debugging UI / shared peripherals for a bunch of different processors that I have. This would also reduce the in-core footprint of the OS, since the file system (and networking in my case) is handled on the interface card.

22 years, 10 months

2
1
0 0

Simplest (practical) file system?

by dwightk.elvey＠amd.com

>From: Joe <rigdonj(a)cfl.rr.com> > >At 11:18 AM 7/28/03 -0700, Patrick wrote: >>> > I agree that it's simple, but not that it's efficient. For small micros, >>> > finding the first "0" bit in an arbitrarily long bit string takes a few >>> > cycles. >>> >>> You would just look for the first byte that is not a 255. >> >>That's absolutely true, you can do that, and from there it's fairly >>straightforward. But here's what I'm thinking. Let's say you have just a >>1.44MB floppy, with a 512 byte sector size. A convenient allocation size >>might be one sector, because you can easily fit the total number of >>allocation units (2880) into a 16-bit unsigned integer (that which is used >>in the file link blocks). That takes about 360 bytes to store on disk, >>which fits nicely into a single sector as well. So far, so good. >> >>But now let's say you go to an 80MB partition with 512 byte sectors. You >>then have approximately 163,840 allocation units (not discounting any space >>used for boot and other common structures). That's too many for a 16-bit >>word, so you decide to make your allocation units four sectors. That means >>you have 40,960 allocation units, each of which is 2K in size. Your >>free-space bitmap, then, would be 5,120 bytes, which takes 10 sectors or 3 >>allocation units to store depending on your implementation choices, but >>let's just go with the smaller 10-sector size. >> >>I'm thinking about two things: first, trying to keep the entire volume >>bitmap in memory chews up almost 5K of RAM, and that's probably not good for >>an 8-bit machine, at least, it's not sufficiently memory-efficient, IMO. >>Second, if you decide then that you'll only deal with one sector of it at a >>time to save RAM, you may have to read-then-write juggle those ten sectors a >>lot. If you do a linear search for a free block, it may be that you can rip >>through the 255-valued bytes quickly, but they have to be in RAM, so you may >>have to do several reads to find what you want, which saps time. > > > I wonder if it really would sap a lot of time. Modern IDE drives have >large cache buffers so I would think that system could very likely read the >data from the buffer. I'm thinking that as slow as these old systems are >and as fast as the modern drives are that it would be better to use a >simple and fast algorithim even if it means more drive accesses. > > Joe > As I recall, Bob is looking to put this onto some old HP hardware. Dwight

22 years, 10 months

2
1
0 0

09877-10002

by Doyle.Bullock＠robins.af.mil

We at Robins AF BASE are in need of a copy of a 09877-10002 Tape Binary Duplicator Tape. I just did a Google search for this part number and recieved the following. Do you still have these? Any help would be appreciated. Thanks, Doyle Bullock Eureka! Joe cctech(a)classiccmp.org <mailto:cctech%40classiccmp.org> Sun Feb 9 16:04:30 2003 * Previous message: CCS 2422 Floppy Disk Controller <009850.html> * Next message: Eureka! <009859.html> * Messages sorted by: [ date ] <date.html> [ thread ] <thread.html> [ subject ] <subject.html> [ author ] <author.html> Well I didn't find the Holy Grail but this is close! I went to a hamfest today and in a box of junk I found the operating program for the HP 9877 Mass Memory unit! That's the box that has up to four tape drives installed and was used to mass duplicate HP 9825 tapes at the HP factory. The 9877 is a rare bird and was only offered to the public for one year (1979 IIRC) but I've got two of the 9877s, Tony D has one and NASA KSC has one but NO ONE has been able to locate the operating program for it till now. The tape APPEARS to be in good condition but you know how HP tapes are :-( The full name of the tape is "Duplicator 9825A/9877" and it's part number is 09877-10002. Other INTERESTING finds (in the same box no less!) were a new DC-300A tape (as used on the IBM 5100 and Tektronix 4051), a Plot 50 tape and Plot 50 Backup tape and an Alignment tape. All three are for the Tektronix 4051 computer. Wahoo! A good ClassiComp day! Joe * Previous message: CCS 2422 Floppy Disk Controller <009850.html> * Next message: Eureka! <009859.html> * Messages sorted by: [ date ] <date.html> [ thread ] <thread.html> [ subject ] <subject.html> [ author ] <author.html>

22 years, 10 months

2
1
0 0

ROM on Altair front panel board

by classiccmp＠vintage-computer.com

> I was just looking at the schematics for the display/control board > for the Altair 8800 and saw that there is a 1702 EPROM on the board. The > lowest 4-bits of the EPROM's address bus are connected to a 7493 binary > counter and the highest 4-bits are connected directly to the address bus. > > What's the purpose of the EPROM? Did the front panel have some > intelligence? I'm pretty sure that you're looking at an Altair 8800B front panel schematic. I believe those were software controlled front panels. The 8800 and 8800a had no EPROMs on the front panel - just TTL and the switches, LEDs, etc. Erik Klein www.vintage-computer.com/vcforum The Vintage Computer Forum

22 years, 10 months

1
0
0 0

Looking for Sharp pens

by tlake＠twcny.rr.com

Do you have any Sharp EA-850B (black) or EA-850C (color) pens available for sale? If so how many do you have and how much would you like for some? TIA Tom Lake

22 years, 10 months

3
2
0 0

ROM on Altair front panel board

by RCini＠congressfinancial.com

Bob: I don't know the exact Altair model the schematics relate to, but it's not the turnkey model. The ROM socket appears on the display/control board schematic, which has the front panel switches and LEDs. The Altair Turnkey would, I believe, have a different board in it called the Turnkey Module or something like that. If you want to see the schematic, go to my Altair32 Emulator page and look on the technical links page for the ZIP file containing scans of the schematics. I do not have an Altair, and I got these schematics from another source. The only designation on the page is "Figure 3-16; Display/Control Schematic (sheet 1 of 3)". The URL is http://highgate.comm.sfu.ca/~rcini/classiccmp/Altair32.htm I've had these schematics for a while, but I never looked at them that closely. Rich -----Original Message----- From: Kapteyn, Rob [mailto:kapteynr@cboe.com] Sent: Monday, July 28, 2003 2:37 PM To: cctalk(a)classiccmp.org Subject: RE: ROM on Altair front panel board Which version Altair ? The original Altair has no ROM anywhere. I think you are looking at the "turn-key" version. It has no switches for manual intervention, so it would have to have some intelligence, in the form of a boot-loader. I have never worked with a turn-key version, so I am not sure. -Rob -----Original Message----- From: Cini, Richard [mailto:RCini@congressfinancial.com] Sent: Monday, July 28, 2003 12:15 PM To: CCTech (E-mail) Subject: ROM on Altair front panel board Hello, all: I was just looking at the schematics for the display/control board for the Altair 8800 and saw that there is a 1702 EPROM on the board. The lowest 4-bits of the EPROM's address bus are connected to a 7493 binary counter and the highest 4-bits are connected directly to the address bus. What's the purpose of the EPROM? Did the front panel have some intelligence? Rich

22 years, 10 months

1
0
0 0

at&t 458

by mmcfadden＠cmh.edu

22 years, 10 months

1
0
0 0

ROM on Altair front panel board

by kapteynr＠cboe.com

Which version Altair ? The original Altair has no ROM anywhere. I think you are looking at the "turn-key" version. It has no switches for manual intervention, so it would have to have some intelligence, in the form of a boot-loader. I have never worked with a turn-key version, so I am not sure. -Rob -----Original Message----- From: Cini, Richard [mailto:RCini@congressfinancial.com] Sent: Monday, July 28, 2003 12:15 PM To: CCTech (E-mail) Subject: ROM on Altair front panel board Hello, all: I was just looking at the schematics for the display/control board for the Altair 8800 and saw that there is a 1702 EPROM on the board. The lowest 4-bits of the EPROM's address bus are connected to a 7493 binary counter and the highest 4-bits are connected directly to the address bus. What's the purpose of the EPROM? Did the front panel have some intelligence? Rich

22 years, 10 months

1
0
0 0

KC Computer Swap Shop?

by mmcfadden＠cmh.edu

computer swap & shop 5612 Johnson Dr 66202 Phone 913-262-1991 FAX 913-262-2262 Mike

22 years, 10 months

1
0
0 0

Simplest (practical) file system?

by dwightk.elvey＠amd.com

>From: spc(a)conman.org > >It was thus said that the Great Bob Shannon once stated: >> ---snip--- > > It also depends upon the size of the disk you are going to use---up to a >few meg in size the MS-DOS FAT system (12 or 16 bit variants) will probably >be the best bet---well documented with the ability for interoperability >between most systems. > > -spc (my two bits worth ... ) > Hi Bob If you absolutely must start with a FAT system I think that you should use a DOS like FAT. This makes things easy to move from machine to machine. The 12 bit FAT is a little clumsy so I'd suggest the 16 bit as the easier to deal with. Dwight

22 years, 10 months

5
5
0 0

ROM on Altair front panel board

by RCini＠congressfinancial.com

Hello, all: I was just looking at the schematics for the display/control board for the Altair 8800 and saw that there is a 1702 EPROM on the board. The lowest 4-bits of the EPROM's address bus are connected to a 7493 binary counter and the highest 4-bits are connected directly to the address bus. What's the purpose of the EPROM? Did the front panel have some intelligence? Rich

22 years, 10 months

1
0
0 0

More Acorn finds + Numonics graphics tablet

by julesrichardsonuk＠yahoo.co.uk

> To use with AutoCAD, set the tablet for binary data transmition at > 9600 baud, 8 bits, one stop bit. Switch settings are: ok, that's useful, thanks. I have a serial cable that came with the machine so I hooked it up to a DOS box and just used a terminal emulator to check I was getting data from it. It looks healthy as far as I can tell, although given the amount of raw data coming back the protocol looks quite complex. > Lastly, the AutoCAD notes say that the tablet can be configured to > emulate other brands by changing the PROM chips. Interesting. I'll have to take it apart now and see what (if anything) it says in the ROMs that are in there :-) I found some vague reference to Numonics tablets working under Linux with a Summagraphics driver if the ID string check is removed, but unfortunately it doesn't actually say *which* Numonics tablets that applies to. I'll have to give it a go sometime. I found a driver disk for Apple systems, but my Mac skills aren't sufficient to pull apart an Apple driver and engineer an equivalent one on a PC! (which is what I'd like to use this on) cheers Jules ===== Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

1
0
0 0

Simplest (practical) file system?

by dwightk.elvey＠amd.com

>From: "Bob Shannon" <bshannon(a)tiac.net> > >ben franchuk wrote: > >> >> Use the whole disk ... block by block ... FIG FORTH worked this way. >> >Very tempting, as I'm adding a file system to a threaded interpreter >(not FORTH). > >But a basic block system is just too primative. Named files at a minimum. > Hi Bob As I've shown in my previous mail, you can use it as a starting place. I also have some code that I wrote to maintain files on a DOS disk. It is bassed on the original block system. Although, I didn't expand it to include sub-directories, this could be added with a small additional amount of code. The main thing is to get something working and keep things open enough that you can expand later. I wrote the DOS stuff so that I could more easily transfer things between my PC and my block system. Start simple and work towards a later complete system. Dwight

22 years, 10 months

1
0
0 0

Simplest (practical) file system?

by dwightk.elvey＠amd.com

>From: "ben franchuk" <bfranchuk(a)jetnet.ab.ca> > >Bob Shannon wrote: >> What is the simplest usable disk file system to implement? >> >> More specifically, if your going to write a disk file system from >> scratch, what would be the easiest way to implement >> some basic file system functionality? >> >> How did some of the very early DOS systems allocate disk space in the >> days before FAT tables, etc? >> >> Just how simply can this be done? >> >> > >Use the whole disk ... block by block ... FIG FORTH worked this way. > Hi On one of my Forth setups, I wrote a word that would take the first number on a line of text in some block and then use that number as the next block to bring up. This way I'll edit a number of blocks as an index of the rest of the text/code on the disk. I could then pass this number on to words like LOAD, INDEX or EDIT. This made a simple directory setup with a method for accessing portions of the disk as different types of data. I'd place this word as a single key stroke in my editor so that I could use this word or just maintain the directory. I made it a rule to put both the starting block and the last block in the directory entry. This directory would look something like: 10 25 EDIT comments 26 29 ASSEMBLER 2A 2B PROGRAMMER Although, it kept the block numbers in ASCII, the time to convert to machine numbers is a small portion of the overall access time. Keeping the numbers as HEX values means that the conversion routines can be optimized for simpler processor and still be in a human readable format. I'd intended to add words that would maintain disk space but so far, I've just maintained things by hand. Still, one can see that with just a few extra words added, one can do a reasonable OS without the need for a true FAT. Adding words like a DELETE and a GARBAGE collector would make a reasonable disk OS. I did add a search words to my directory setup. This way I could find the EDITor fast if it was on some other block of my simple directory. The advantage of just starting with simple blocks is that one can expand it over time to even deal with sequential files ( what most consider random length streamy file ). At first, one can keep even the editor simple by having fixed length text lines, as a Forth block system does. A block is 1024 bytes. When displayed as text, it is a fixed chunk of 16 lines of 64 characters. Dwight

22 years, 10 months

1
0
0 0

FF: Compaq SLT/286 and Acorn manuals (Cambridge, UK)

by julesrichardsonuk＠yahoo.co.uk

Hi, 1) I just found the Operations Guide and MSDOS 3 manual for a Compaq SLT/286 laptop up in the loft. The machine itself is No Longer With Us, so if anyone wants them they're welcome to them. The programs floppy is still there, and I believe I saw the diagnostics floppy floating around recently. 2) I have a few spare bits of Acorn documentation which could do with a home: Four copies of the Acornsoft View guide Two copies of the Econet level 2/3 fileserver user guide Acorn 3020 welcome guide Acorn 3020 welcome / user / apps guides (shrinkwrapped) Archimedes Smalltalk-80 manual Collect from just north of Cambridge (UK :) cheers Jules ===== Backward conditioning: putting saliva in a dog's mouth in an attempt to make a bell ring. ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/

22 years, 10 months

1
0
0 0

RL02 Assistance...

by rogersda＠cox.net

Curt, Perhaps you've already received the assistance you need (I've been gone all weekend), but - depending on the version of VMS you have (I don't remember which version dropped "compatibility mode") - VMS doesn't much like to mount non-RMS file systems, except as "foreign", which you said you tried. Is there data on that disk you need? If not, why not use the command $ init DLA3: RLDATA If it fails that, then I'd suspect a driver mis-match. Dale > > From: cvendel(a)att.net > Date: 2003/07/26 Sat PM 09:21:33 EDT > To: cctech(a)classiccmp.org > Subject: RL02 Assistance... > > Hi, > > I've got an RL02 connected to my Vax 4000-200 through an RLV12 QBus > controller. > > The Drive is spinning up fine and the Ready light is Lit, the Fault light > goes off once power to the Vax is started and doing a SHO DEV at the Chevron > prompt and within OpenVMS both show: > > RLV12 Controller 0 (774400) > -DLA3 (RL02) > > Which looks great from my perspective, the drive ID plug is a 3, so DLA3 makes > total sense. In the SHO DEV within OpenVMS does display the drive as being > online. > > So my problem is with MOUNT, everytime I go to mount the drive the system > simply hangs and never seems to complete the mount, I end up having to CTRL- > BREAK to Halt the system back to Chevron and b up again from my DSSI DIA0: > > Anyone have any idea's what I'm doing wrong or what may be wrong??? > > I've tried with a /FOREIGN too since this platters are from an 11/730 and many > of the handwritten labels on the disk paks say RSTS on them, so I wasn't sure > if it was a format issue or something, I could really use some help/advice from > anyone with a lot of experience with the quirks of the RL's. > > Thanks much, > > PS: If anyone has an RK05 or RK07 DECPack for sale and possibly an RKV11D Qbus > controller I am in the market for one. > > Curt

22 years, 10 months

1
0
0 0

8-inch disk drives

by luv2craftca＠jaydemail.com

Hi, I'm new to the list and am currently trying to find a solution to transfering data/software from 8-inch disks to a pc. We have a working minc-II with two floppy drives. The console is gone but I currently have an old 386 hooked up to act as a terminal. What would be the best way to transfer the info from the old disks to the 'newer' pc? One suggestion was to get an old 8-inch floppy drive and hook it directly to the pc, but it seems to me that would involve possible building a hardware interface and writing driver software. Any suggestions or pointers to web pages would be very welcome, I've already spent a few hours searching the web without finding a solution. Thanks! Jo -- _______________________________________________ Another FREE service from Jayde Online http://www.jayde.com Private, Web-based email accounts at http://www.jaydemail.com Powered by Outblaze

22 years, 10 months

8
14
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb