test-drb

test-drb@ccmp.vtda.org

101090 discussions

by frustum＠pacbell.net

I've had an IMS 5000 system for about a year; I got it off ebay for a song ($35), but as I didn't know any login name and corresponding password, it has been a brick. I've thought of a couple ways to break the security, which isn't all that secure, but didn't due to lack of time. Finally I made time last night. The machine specifically is an IMS 5000 IS. It is a very well built late model S-100 system, aimed at professional applications. This one came from a dentists office. The main unit contains a 12" CRT, an intelligent terminal control board (8085 based) which is connected via an internal serial port to a Z80 CPU card in the main S-100 chassis. This is a turbodos system, meaning it is a multiprocessing Z80 system. Serial ports on the back of the machine can connect to remote terminals; I have one other remote head, also made by IMS. The machine has a 10MB Rodime hard drive, still working, a single DSDD floppy (although there is room for another), a master Z80 CPU, a 64KB parity checked DRAM card, and two MPUs. An MPU is a card containing a slave Z80 processor with its own 64KB parity checked DRAM and serial ports, etc. Although I have the docs showing the gross functionality, I have no schematics for any of this. First I rebuilt disk images from Fritz Chwolka's webpage for the IMS 5000, but for whatever reason I couldn't boot these disks. IMS made more than one configuration of this machine, so it wasn't entirely unexpected. Next I tried a hardware approach. The hard disk controller has a 1KB SRAM buffer for holding an inbound or outbound sector. Programmed IN/OUT transfers fill or drain the buffer, not DMA. First I verified that the address lines on the RAM were wired in conventional order by seeing what pins they were wired to on the 74LS193s forming the address counter. The data pin order was more of a question, but I assumed since the address lines were connected in consecutive order, so the data pins would be too. I hooked up a logic analyzer to the RAMs, booted the system, and waited for the password prompt. I typed some gibberish and hit return, and the logic analyzer captured the writes to the RAM. I realized the first read or maybe first few would be reading directory entries to find the USERID.SYS file, which is a plain text file containing the login names, passwords, cp/m user area, and privilege level. However, no matter what I did, the data didn't make sense. I thought perhaps I messed up the order of the data pins, so I buzzed out which chip drove the DOn (data out) S100 pins. Again, I did the login thing, assuming that any time this sector buffer ram was being read that the data would be appearing on the S100 bus. Apparently not so. So I switched gears. I shuffled cards around to make space and connected the logic analyzer to the Z80 and set a trigger for I/O port operations, triggering on the first IN from the port corresponding to the sector buffer. Pay dirt. I quickly got the list of users and passwords, and tried them and they worked. After disconnecting the logic analyzer, I captured the contents of the various EPROMs, then called it a night. Bitsavers and Fritz Chwolka both have interesting web pages, so I won't attempt to duplicate any of that, but I will be taking some pictures, posting the HEX files for the EPROMS and making links to the other IMS 5000 resources on the web.

19 years, 1 month

Housecleaning - PC Parts

by feldman.r＠comcast.net

Hi, I'm doing some housecleaning and have some PC odds and ends, free for postage or pickup in Chicago (ZIP 60659). As I get the list in digest, reply directly to me at r_a_feldman at hotmail.com. If I don't hear by Friday, these items age going to the recycling center. Bob HP Colorado T1000 Internal tape drive. Irwin Accutrak Tape drive, Compaq 64041 (Compaq Spare 197490-001). Lapine Titan LT200 20MB Drive (Dead) w/National Computer Ltd. NDC5127-60 Controller. Oak 8/16 Bit CGA/VGA card. DTK ISA Multifunction card (FDC/Serial/Parallel/Clock/Game) P11-117 (needs battery). MCT Turbo XT motherboard w/8088/8087. Chinon FR-506 5.25" 1.2MB. TEAC FD-505 (Dual 5.25"/3.5" Half height). Epson SD-700/SD-800 (Dual 5.25"/3.5" Half height) (Condition unknown). Citizen U1DA-49F (3.5?). IBM 5151 Mono monitor (prefer pick-up). HP J2341A Jet Direct Internal for LJ 4 w/software and docs. HP J2382B JetDirect EX External Parallel/Ethernet w/software and docs, boxed.

19 years, 1 month

SymbOS

by chrism3667＠yahoo.com

http://groups.yahoo.com/group/symbos8bit/ "SymbOS (SYmbiosis Multitasking Based Operating System) is a new OS for Z80 based systems and is currently available for the Amstrad CPC and the MSX2 computers and compatible systems. SymbOS is based on a micro-kernel-architecture. It provides real preemptive multitasking, a dynamic memory-management for up to 576KB Ram, a totaly Windows-like GUI and support of hard discs with up to 128GB. This group is dedicated to the SymbOS operating system. You will get actual information about the development-progress and can freely discuss about SymbOS and the supported Z80 computers." __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 1 month

Sinclair "design" board? available (UK)

by chrism3667＠yahoo.com

http://www.old-computers.com/forum/ forum_posts.asp?TID=1880&TPN=1 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 1 month

Goofy question about "industrial" archiving

by chrism3667＠yahoo.com

Just curious how, or even if, old design drawings and such were preserved in the old days. I could barely venture a guess as to when the first optical recording drives became "useful", all I remember is a friend obtaining one of the first (locally) cd players for his auto in ~the summer of '87. I was in contact with a few of the people who were involved w/the Mindset computer, and had hoped I would obtain info on the custom vlsi chips it used, in any form of course. This just lead me to ponder when this stuff started *appearing* on cd's and such. Can anyone name the different optical CD formats that modern readers can't work with? I know there must be a few... __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

19 years, 1 month

disassembling STacy with a SLEDGEHAMMER.

by ajp166＠bellatlantic.net

> >Subject: Re: disassembling STacy with a SLEDGEHAMMER. > From: Cameron Kaiser <spectre at floodgap.com> > Date: Fri, 27 Apr 2007 22:22:36 -0700 (PDT) > To: cctalk at classiccmp.org > >> > Unless anyone has any other bright ideas, it's going in the trash. It's my >> > bloody money and I'll get my money's worth out of this piece of crap the >> > Gallagher way. No wonder Atari burned out. >> >> Golly, Cameron--doesn't it say right there on the unit "No user- >> serviceable components inside"? ;-) > >No, it just doesn't say much of anything. > >I have never met a machine more impossible to get into for its size. > Five gets you 10 there is a hidden screw under a foot or behind a label. Allison

19 years, 1 month

RSX-11

by classiccmp＠memory-alpha.org.uk

Hi, > What is the current status of PDP-11 O/S software? USENET >seems to indicate that there is no non-commercial license, >yet the simh website has some of them available for download.... The answers to your question can be found in "comp.sys.dec" and/or "comp.sys.dec.micro". There was a rather long, heated discussion about this in one of those newsgroups sometime last year. Beware of asking your question in those groups though, you'll be opening a major can of worms.... TTFN - Pete.

19 years, 1 month

Autonetics Recomp (circa. 1960) rescue

by Billy.Pettit＠wdc.com

Al Kossow wrote: History San Jose was selling off some of the Perham collection today, mostly old VTRs and some radio stuff. Got a call that there were two KSR 35s, one of which we identified as the console from the SDS 930, and an ASR 33 out there, so I drove down to retrieve them. When I got there, the RECOMP was on the pallet next to one of the 35s. I'm going to try to set up a time to go through the computer stuff to try to find the rest, but I'm not hopeful, since I don't recall seeing the desk or typewriter. ---------------- Billy writes: Al, Congratulations! That is a hell of a find, my friend. I'm immensely pleased to see at least one of these survived. In the last box of stuff I loaned you is a thick white binder from Autonetics. It is the Theory of Operations and Maintenance manual for several models of the Recomp. One of the early chapters has some details on the differences between the different models. So you even have some documentation! The ones I worked on in the Army all used a Flexowriter for the I/O typewriter. I'd be surprised if a Model 35 ever worked on a Recomp - too many years in between them. There are some details in the book describing early computers that Ed Thelen scanned and put up on his site. (Some where in the garage is another copy of that plus an earlier edition, both in great shape.) Because there is a flat disk for main memory, in the Army we called this the "Jukebox". There were at least a dozen of these at Redstone Arsenal. They were used to program the "stable table" of the Redstone missile. I believe they were also used on some of the early NASA shots that used the Redstone as a first stage booster. I'm pleased for you - the Recomp is one of the rarest computers to find in our hobby. Billy

19 years, 1 month

Two Apollo DN-3xxx's available for pickup [UK only]

by classiccmp＠memory-alpha.org.uk

OK, I've got a pair of Apollo DN-35xx machines available to anyone who wants them for the price of coming and taking them away. One is a "DN-3550" and the other is, I *THINK* (it's a bit buried under rather a lot of other stuff right now) a "DN-3000". Both come with monitor and keyboard but little else. There's a few manuals with the 3000 and some manuals and tapes with the 3550. Both systems need some TLC to get them functioning. The 3550 worked until it was moved, obviously something has come loose inside, but I haven't had time to sort it out since it was passed on to me (I probably even haven't had the top off it). The 3000 arrived with no memory, again, although I managed to get some RAM cards for it, I haven't had time to fit them or do any work other work on the machine. Located in Birmingham. TTFN - Pete.

19 years, 1 month

Autonetics Recomp (circa. 1960) rescue

by aek＠bitsavers.org

> In the last box of stuff I loaned you is a thick white binder from > Autonetics. It is the Theory of Operations and Maintenance manual for > several models of the Recomp. Great! I went through the CHM archives, and we have the user program library listings, but no maint docs. I was going to check if John Bohner might have them.

19 years, 1 month

Minor Earthquake in Kent

by ploopster＠gmail.com

I hope everyone came through alright. Is anyone on the list from Folkestone? Peace... Sridhar

19 years, 1 month

TRS-80s in Cleveland, OH

by jba＠sdf.lonestar.org

I'm not particularly interested in TRS-80 equipment, so I thought i'd post this for everyone else. Cleveland State University's current surplus auction contains quite a collection of TRS-80 equipment. Here's a link to the auction info: http://wapps.csuohio.edu/campusmailbag/forum_posts.asp?TID=2101 Post if you bid on it; I'd be interested to know who's taking it. Jeff Armstrong jba at sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org

19 years, 1 month

disassembling STacy with a SLEDGEHAMMER.

by spectre＠floodgap.com

I am about ready to take my #10 sledgehammer to this benighted piece of junk. How in all that is holy do you get it apart? I've got all the screws out, got all the snaps up on the lower part and the top half seems to float off except for something in the middle of the board I can't see that's holding it on. I think it's the cabling to the LCD, but I can't get the display apart either! Most of the snaps are off, but I can't undo the root. Any suggestions, before I disassemble the unit using the fragmentation method instead? -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- The moon may be smaller than the Earth, but it's farther away. -------------

19 years, 1 month

RSX-11

by ajp166＠bellatlantic.net

> >Subject: RSX-11 > From: Scott Quinn <compoobah at valleyimplants.com> > Date: Sun, 29 Apr 2007 20:49:01 -0700 > To: cctalk at classiccmp.org > >Probably an extremely frequently asked question, but searching didn't >seem to bring anything up. > >What is the current status of PDP-11 O/S software? USENET seems to >indicate that there is no non-commercial license, yet the simh website >has some of them available for download, with the license file having a >clause that states that it is valid for emulators owned by DEC (??), >and also seems to indicate that RSX-11 is covered, yet RSX-11 isn't >available. > >Mentec's site isn't very helpful, all they talk about are Windows >programs and it is so full of features as to be practically unusable on >dialup. > >Any quick rundowns on the status anywhere? Yes, check the licensing info for SIMh and a few others. While PDP-11 OSs (RT, RSX and RSTS [it may not include all of those]) are made available for SIMs it is not for commercial use or operation on real hardware. The copyrights are still valid and some of the products are active. Allison >Scott Quinn >

19 years, 1 month

Facit printer late 70's early 80's and early microprocessor uses

by dave.thearchivist＠gmail.com

I am thinking of compiling a list of objects or instruments or whatever from the early days that included a microprocessor, eg An arcade biorythm machine I had for a while it had an Intel 4004 in it A Facit printer we used at work it had 4 intel 4040 in it (I cant remember the model number) I have a card from an HP item that has an 8008 on it An HP 3562A has 68K and a 2900 bitslice (I have a working one) A R&S RF test set with a 4004 (I kept the CPU board) It annoys me now that I did not take full notes at the time Dave Caroline

19 years, 1 month

Silly BSD questions

by cclist＠sydex.com

For the life of me, I can't figure this one out and I feel so stupid... Maybe a kindly BSD expert can clear my poor addled brain. 1. How does one LIST the contents (i.e. the files) on a volume create by 4.2BSD backup? I don't want to restore them, just list them. Lengths and dates would be nice, but not absolutely necessary. 2. How does one restore the contents of the said level 0 backup volume a local directory? That is, the original was almost certainly backup up starting with /, but I don't want to overwrite my own file system with restored data. Sorry for being so dense this morning, but I can't make heads or tails out of how one might do this using restore. Tar and cpio are easy, but backup/restore has me in a high state of confusion. Thanks, Chuck

19 years, 1 month

Apple Personal Laserwriter LS

by grant＠stockly.com

I got an old printer for free. It works, but its printing grey stuff all over the page like there is something wrong with the drum. I ran a few pages through it and it didn't get better. Is there any reasonable way to fix it or should I throw it away? Anyone need any parts if I do have to throw it away? Grant

19 years, 1 month

Compaq Deskpro 386 Maintenance guide missing pages

by bear＠typewritten.org

Hey; I don't suppose anybody out there has a copy of the Compaq Deskpro 386 Maintenance and Service Guide (mine includes "Addendum 108431-001 (11-88) to manual no. 108033-003")? I'm converting my copy to PDF and I am missing pages 5-1/5-2 and 5-5/5-6. Can somebody send me a copy of these two pages (four sides)? Any quality good enough to read the text is fine, as the pages are being re-typeset before the PDF conversion. Paper photocopies by mail, JPG, whatever. Thanks! ok bear

19 years, 1 month

Anyone near Lexington,KY? Rescue these CP/M systems!

by legalize＠xmission.com

I'd much rather see this go into the hands of a collector in the area than end up in the hands of the high price reseller "compuermkt". The terminal looks interesting, although the one pictured has a bit of "screen rot". It looks like it might be an OEM'ed Beehive terminal, but its hard to tell without seeing it in person. "Vector" systems are pretty hard to come by as far as CP/M S-100 bus based systems go, but I did have a chance to play with one in 1979/1980. ======== Ebay item # 290109142460 Current bid $50, 1 bidder Lot contains: You are bidding on our years of classic computers. The photos only show 1 Vector MZ, one Vector 4, the NEC printer, and NEC 386 system. The total inventory is listed below. This computer equipment has been used and retired and has been in storage for years. The equipment worked when stored, but current working order is unknown. The keyboard of one of the MZ systems is slightly damaged (broken pieces from the frame around the keyboard. SOLD AS IS! Here is the inventory: 2 - Vector MZ systems with Arabrite software and keyboard (bilingual) 2 - Vector 4 systems 1 - NEC wide carriage impact printer that can do bilingual printing 1 - NEC 386 system with small impact printer 2 - Epson impact printers We are in and out of Lexington, KY where this equipment is stored, so pickup and/or delivery of this lot will need to be arranged, and I cannot garuntee it will be immediately after auction end. If you are interested, please email me so we can arrange a pickup or ship time. ======== -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years, 1 month

MPX-16 stuff found

by rcini＠optonline.net

All: While moving things around in the shop, I came across an envelope containing some floppy disks for the Micromint MPX-16. These disks include the source code for the ROM BIOS and an apparently unreleased copy of MS-DOS 1.25. I posted copies of these on the My Documents page of my Highgate site. 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, 1 month

Shugart 460VR / SA460 docs?

by glen.slick＠gmail.com

Anyone have Shugart 460VR / SA460 docs? Is a 460VR the same thing as a SA460? The drive in my Intel iPDS says Model No. 460VR. Could it be functionally replaced by an original IBM PC full height 5.25 drive? The drive from the iPDS has jumpers on both DS1 and DS4 installed. I wonder why that is?

19 years, 1 month

Tandon TM100-2A drives

by julesrichardsonuk＠yahoo.co.uk

Does anyone know if these are 40 or 80 cylinder? Google seems to suggest that they're 40 (which is what I need). The drives all have little stickers on saying "Quad density" though (which always implies to me 80-track, but maybe to Tandon it means 40 track but you have the luxury of two sides :) cheers J.

19 years, 1 month

IBM 3420 drives

by wmaddox＠pacbell.net

Remember the pair of IBM 3420s that showed up on eBay a few weeks ago? The fellow that bought them sent me an email offering to sell them. If anyone here is suffering from "non-bidders remorse" for passing them up, please let me know ASAP and I'll put you in touch with him. --Bill

19 years, 1 month

Autonetics Recomp (circa. 1960) rescue

by aek＠bitsavers.org

> Any signs of the console typewriter or other peripherals? no. will do some more digging but they may have been accidentally discarded about 10 years ago. > What's the story behind the rescue? History San Jose was selling off some of the Perham collection today, mostly old VTRs and some radio stuff. Got a call that there were two KSR 35s, one of which we identified as the console from the SDS 930, and an ASR 33 out there, so I drove down to retrieve them. When I got there, the RECOMP was on the pallet next to one of the 35s. I'm going to try to set up a time to go through the computer stuff to try to find the rest, but I'm not hopeful, since I don't recall seeing the desk or typewriter.

19 years, 1 month

Autonetics Recomp (circa. 1960) rescue

by aek＠bitsavers.org

http://bitsavers.org/pdf/autonetics/recomp/pics

19 years, 1 month

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