test-drb May 2020

test-drb@ccmp.vtda.org

163 participants
133 discussions

by rich.cini＠verizon.net

You know, reading about this made me dig out the info I had on the Character Oriented Windows ("COW") library. I was reading some of the docs and it occurred to me that it operated much like Windows (probably Windows 1), but what I couldn't find were any "sample" programs or tools to build a program based on the COW library. Does anyone have/know of a sample program that used the library? Was there an SDK for it or was it used only for Microsoft's products? Just looking for something new/interesting to learn about. Thanks! Rich ?On 5/22/20, 11:35 AM, "cctalk on behalf of Chuck Guzis via cctalk" <cctalk-bounces at classiccmp.org on behalf of cctalk at classiccmp.org> wrote: A quick look at the code indicates to me that the Intel translator CONV86 may well have done the translation in "strict" mode. Of course, there were other translators, but some of the stuff rings a bell. For example, the 8080 instruction INX B gets translated to SAHF INC BX LAHF all done because the 8080 16-bit instruction does not affect the zero and carry flags, but the 8086 instruction INC, does. So there's very likely a large amount (my experience was at least >30%) of cruft in the code. --Chuck

4 years, 1 month

intellec MDS80 on eBay

by couryhouse＠aol.com

I assume this are not the standard Intel floppy drives???? On Sunday, May 31, 2020 Jan-Benedict Glaw via cctech <jbglaw at lug-owl.de; cctech at classiccmp.org> wrote: Hi! I just wanted to drop an email that there's a MDS 80 on eBay: ??? https://www.ebay.de/itm/333612000595 (Please note: The seller, Michael, is a friend of mine, and a former coworker.) Thanks, ? Jan-Benedict --

4 years, 1 month

intellec MDS80 on eBay

by jbglaw＠lug-owl.de

Hi! I just wanted to drop an email that there's a MDS 80 on eBay: https://www.ebay.de/itm/333612000595 (Please note: The seller, Michael, is a friend of mine, and a former coworker.) Thanks, Jan-Benedict --

4 years, 1 month

Anyone know what an AM000076 (Dip 18) is?

by ian.finder＠gmail.com

Title says all, Backing up all the programmable parts in the Apollo DN100 and the CPU board has a few of these ceramic DIPs with the same Apollo P/N labels as the Am27S29 and similar programmable parts. Thanks

4 years, 1 month

Microsoft open sources GWBASIC

by cisin＠xenosoft.com

On Fri, 22 May 2020, Boris Gimbarzevsky wrote: > Thanks for posting the timeline of various Basic interpreters. I wasn't > aware that Gates/Allen also wrote Basic for C64. Microsoft did a BASIC for the Commodore PET. I wasn't aware that they did the C64. > Did download the 8080 Basic source code out of interest, but in early > 1980's had very little to do with IBM PC. PC was 8088, NOT 8080. BUT, an original 8080 source code can be run through some algorithmic translation to automagically patch it into something that is close enough to 8088. All of my knowledge of the following is third hand, and probably mostly WRONG. If you are lucky, maybe some of the folk here who actually KNOW this stuff will step in and give the right information. Sequence is only approximate. Well, we can start by considering the 4004. 1971. It was not the "FIRST" microprocessor, although the later chips based on it dominated the market. 4 bit data bus. It was designed to be able to make a whole range of Busicom calculators that could be essentially the same hardware, and changing ROM, or moving a jumper from cheapest model to most expensive model would void the warranty. Then came the 8008, with EIGHT bit data bus, and 14 bit address bus (16K of RAM) Then came the 8080, with 8 bit data bus and 16 bit address bus (64K of RAM) That brought about a giant surge in hobbyists trying to build computers, including the MITS Altair, etc. It is important to note that each Intel chip consisted of "minor" modifications to the previous one. That made it easier to modify a design or software from one to the next one. Minor patches tended to be all that was needed. THAT is important. 'course it means that some aspects are really weird due to being patched on top of patched, on top of patched, instead of redesigned. MEANWHILE, other companies started trying to get into the game. Motorola came out with the 6800, which was pretty cool. But, they were taking a long time to get around to the next ones, so a group of engineers left and started MOS Technology, and came out with the 6500. Motorola's lawyers were not amused. So, the engineers redesigned an all new, "non-infringing" one called the 6502. Motorola eventually got around to trying to design "the best 8 bit microprocessor", and came out with the 6809. They had designed from scratch, to try to make it the best, so it had so much different, that previous machines could not be easily modified for it, and had to be redesigned for it, and software needed to be re-written, not just patched. They had difficulty finding any takers, in spite of obvious design superiority, because most manufaturers were already established with other chips. BUT, Radio Shack built a machine called "the Radio Shack Color Computer" around a Motorola application note. Radio shack didn't want it competing with their other products, and didn't see any reason to include capabilities, so they had horrible constraints, such as chiclet keyboard, unexpandable RF video, cartridge slot instead of expansion bus, etc. A lot of the early machines were intel 8080, which had 8 bit data bus and 16 bit address bus, which meant maximum of 64K of RAM, although it was not very hard to cheat for 128K. Gary Kildall needed an OS for managing his source code on 8 inch disks that he added to his computer. He wrote "Control Program and Monitor", which later became "Control Program for Microcomputers" ("CP/M"). He tried to get Intel to market it, but they didn't think that there would ever be enough market to sell an operating system for a microcomputer. So, he started "Intergalactic Digital Research" Later, when the hobbyists grew up and lost their sense of humor, "Thinker Toys" became "Morrow designs". (they had been having some trademark issues) "Kentucky Fried Computer" became "Northstar" (they had been having some trademark issues) and "Intergalactic Digital Research" bcame "Digital Research Incorporated" Then Zilog came out with the Z80, which had major enhancements. BUT, code using those enhancements would not run on an 8080, so CP/M remained 8080, and many/most? programmers stuck with 8080 for marketable code. Intel came out with the 8085, which had DIFFERENT [incompatible] enhancements, so many/most? continued to stick with 8080 code. I think that the Radio Shack model 100 is 8085. A hobbyist named Steve Wozniak wanted to build a Z80 computer. But it was going to cost too much. At Wescon (trade show), he got a fantastic deal on some 6502 chips. Not what he had been wanting, but he could make it work, and he could afford them! He hooked up with Steve Jobs, who had some marketing ideas. They sold a bunch of "blue boxes", kited some checks, sold Jobs' VW bus and Woz's calculator, and put together a batch of kits. ($666.66; they later said that they had not realized the theological implications of the price) And, hence, we got "Apple Computer". Later, Apple Music (Beatles) talked to them about the name. Apple Music agreed to not get into computers, and Apple Computers agreed to not get into music. Hmmm. Atari and Commodore both ended up also using the 6502. Motorola Then Intel decided to build a "16 bit processor". The 8086 has a 16 bit data bus and a 20 bit address bus, for a maximum of 1M or RAM When the IBM PC wasbeing planned, there was a lot of difference in cost between 8 bit and 16 bit support chips. The 8088 was ALMOST the same as an 8086, but with an 8 bit data bus, which significantly reduced costs! From an engineering perspective, the 8088 is an 8 bit version of the 16 bit 8086. >From a MARKETING perspective, it's 16 bit, or maybe 32 bit, or maybe 64 bit, etc. If a 4 bit machine has a 128 bit Smell-o-vision port, marketing will call the machine "128 bit" The IBM PC was an 8088. IBM went to Microsoft to get BASIC for it. Bill gates put on a suit and met with them. The "Pirates Of The Valley" story of Microsoft cold-calling IBM to sell an operating system PINS THE NEEDLE ON THE BOGUSIMETER. The author of that fiction needs a hot soldering iron shoved 8 inches up his nose. Microsoft was happy to oblige on BASIC. One of the IBM engineers had an Apple2 with a Microsoft "Softcard" (Z80) to run CP/M. So, IBM asked Microsoft to also supply "the CP/M". Bill Gates explained that that was Digital Research. So, IBM went to Digital Research in Pacific grove to get "the CP/M". There was some "culture clash". IBM showed up in blue suits. There is an unconfirmed report that somebody at DR thought that it was a drug raid. I have looked out that upstairs window, and can imagine it. The IBM suits encountered barefoot workers in shorts and not all wearing shirts (both sexes?) female workers without bras. cats and a dog. plants. Surfboards and bicycles in every room. Gary Kildall wasn't even THERE! He had gone to fly his plane up to Oakland to visit Bill Godbout. Official story is that that was an essential errand to deliver some documentation (and no lower employee could have put some shoes on and driven up?). His wife was there, and he had told her, "They're just coming to sign a license agreement. Let them wait in the living room with the rest of the customers." IBM was not amused. IBM went back to Microsoft. I heard that Bill Gates told his people that anybody without a suit should stay home for the day. IBM said that they wante Microsoft to provide the OS. Bill Gates said, "we do BASIC. We don't do operating systems." IBM said that they intended to get the BASIC and the OS from ONE source. Bill Gates said, "Let me tell you about our new OS department!" Then Bill Gates went down the street to Seattle Computer Products and bought 86-DOS/QDOS ("Quick and Dirty OS"), including hardware to run it on, and the contract of Tim Paterson who wrote it. Microsoft had a new OS department. Motorola STARTED work on "The best 16 bit processor". Rather than patching something earlier, and being stuck with legacy oddities, they designed from scratch. So, it took longer. Motorola eventually came out with the 68000, which was the best 16 bit processor. (or 32 bit or 64 bit if you are in marketing) The Apple3 was a major financial setback. Much more money, for very little more. Apple started on a total redesign. It is rumored that for the Lisa, they explicitly avoided anybody with prior experience to avoid repeating previous bad ideas. 'course hiring brilliant folk straight out of college meant that nobody had the prior experience to know the consequences of building a machine for which software could NOT just be patched from previous versions. The Lisa was magnificant! and in a price range (>$20K?) where sales were to overpaid exectuvies wanting to impress other overpaid executives. It actually came close to putting Apple on the rocks. And, it was an ALL-NEW (and improved) machine. Old software couldn't just be patched, it had to be re-written. The brilliant recovery plan was to take the Lisa design and cut every corner that could be cut, to make a machine that could be sold for $500. Once they did, they found that they could still get away with selling it for $2K. it was mandated that the resulting machine would come with four significant pieces of software. By the time it was ready, those had become Mac-Write, Mac-Paint, Mac-Write, and Mac-Paint. But that was enough. The marketing people were smart enough to change the grumbling about building a computer for ignorant masses into "a computer for the rest of US" Later, Commodore (Amiga) and Atari (ST) used the 68000. There are some amazing stories (that i don't know) about that "technology swap" Intel came out with the 80286, 16 bit data bus with 24 bit address bus. with fewer limitations. But still a few significant ones, such as how to switch in and out of "protected mode". "It's like having to turn your engine off to switch gears on the freeway". Bill Gates called the 80286, "Brain dead." In "real mode", which would be limited to 20 bits of address, it is easy to cheat and enable A20, which permits 64K past the 1M boundary. THAT is required for Windoze 3.10 Then came the 80386, which could sorta be called a 32 bit processor. And the 80386-SX, which analogous to the 8088, was a 16 bit version of the 32 bit 30386, permitting building a software compatible machine using cheap 80286 support chips. 80486, which is kinda like a 80386 plus 80387 math chip, and the 80486SX, with is 80486 without the math processor. and Pentium. Intel had been finding out the hard way that it was difficult to maintain trademark of a number (Oldsmobile "442" notwithstanding) Other manufacturers would make a 80386 like chip and call it a 486, or an 80486 like chip and call it a 586, etc. So, they had a naming session. And the other entries were even worse than "Pentium". I'm surprised that that didn't backfire horribly! Consider: In about 1965, Honeywell bought Pentax from Asahi. Honeywell could totally legitimately have come out with a processor (joint venture with AMD/Cyrix/etc.?) and called it the "Pentaxium". Intel wouldn't even be able to object. Yeah, there have been more since then, but new stuff isn't interesting for another ten or twenty years. OR MORE for some of the boring current stuff. -- Grumpy Ol' Fred cisin at xenosoft.com > As was working with PDP-11's at that time, really disliked 8080 instruction > set and got a C64 instead which was considerably cheaper than IBM PC and much > easier to write assembly code for. C64 basic is fairly ugly but bought a > 6502 assembler and just used Basic to display stuff on screen and call my > work was done in assembly language code. Had no trouble sampling switch data > at 1 KHz using my "toy" computer. A couple of guys from UBC Physiology > decided to build a programmable stimulator based on C64 which they were > trying to sell for $2K, considerably less than the ~$10 K that the dedicated > device that was commonly used then. Even though their timing specifications > matched the expensive device, a lot of researchers back then didn't want a > "toy" to be part of their lab setup so sales were few. > > Recently found a movie Pirates of Silicon Valley which had some of early > Microsoft history and, if depictions of individuals are true to reality, > explains why I far preferred Mac in comparison to ugly early windows. It > also helped that 68000 was a very easy processor to migrate to after 8 years > doing assembler/FORTRAN programming on a PDP-11. Couldn't believe it when I > had a full 512 Kb of RAM to play in.

4 years, 1 month

history is hard

by jnc＠mercury.lcs.mit.edu

> From: Jon Elson > As far as I know, there was no VM/360. There WAS VM/370, which was out > in the early 1970's CP/67, which was a semi-product, and ran only on 360/67's, was basically the same functionality as VM/370. (I get the impression that the code was descended from CP/67, but I can't absolutely confirm that - although see Varian, below.) It was used by many customers who had purchased 360/67's. The 370/67's instruction set didn't need to be tweaked at all to run a virtualization (although it had added hardware to do virtual memory, which CP/67 needed); the '360 Principles of Operation' was defined in such a way that it could be virtualized. (Unlike, say, the PDP-11, where a RESET instruction in User mode is a NOP, and does not trap). All that's needed is the virtual memory hardware, because otherwise the real addresses of the underlying machine have to be exposed to the virtual machines. CP/67 was preceded by two earlier iterations: CP/40, which ran on a special 360/40 which has been hacked to have paging hardware added; it was likewise almost identical to CP/67 (a hacked version of CP/40, with the memory management of the 370/67 substituted for the special 360/40's, was booted on a 360/67). An older system, M44, which was similar in functionality (although not a perfect virtualization of the underlying machine), it ran on a modified 7044. One version of CP/67 provided a /370 virtual machine; it was used extensively by the MVS development team. CP/67 was also brought up on /370 hardware. Full details in "VM and the VM Community: Past, Present and Future", by Melinda Varian. Noel

4 years, 1 month

intellec MDS80 on eBay

by couryhouse＠aol.com

Still looking for the matching? paper tape reader and punch.? For one of these...Ed# On Sunday, May 31, 2020 Jan-Benedict Glaw via cctech <jbglaw at lug-owl.de; cctech at classiccmp.org> wrote: Hi! I just wanted to drop an email that there's a MDS 80 on eBay: ??? https://www.ebay.de/itm/333612000595 (Please note: The seller, Michael, is a friend of mine, and a former coworker.) Thanks, ? Jan-Benedict --

4 years, 1 month

FS (a little OT): Telular Phonecell SX5 GSM Fixed Terminals (x2)

by spectre＠floodgap.com

I know that there's a few people on this list who mess around with homebrew GSM networks and OpenBTS, so I'll offer these here first. I am getting rid of my two Telular Phonecell SX5 fixed GSM terminals. These are 2G devices that present a phone line and a serial port. They have dial tone emulation and can allow a regular phone handset to send and receive calls. (There is some fax support but I've never used that functionality.) The serial port is directly connected to the GSM modem so that you can also use it for sending and receiving SMS text messages, which is the primary purpose it served here (so I could ping the house sensor network if the server line was down). The reason I'm getting rid of them is because 2G is being sunsetted in the USA and T-Mobile, the last 2G carrier, will dismantle its nationwide 2G network by the end of this year. DO NOT BUY THIS IF YOU WANT TO USE IT FOR THAT PURPOSE unless you are using a regional carrier you know will support it. On the other hand, if you want a fixed box (or both of them) for your own private GSM network, such as with an OpenBTS base station, then this will serve you hopefully as well as it has served me. Both units were purchased new and I have been their only owner. They include manuals, power supplies, spike antennae and power cords in the original boxes. SIM cards are not included and I have removed their old lead-acid battery backups for weight and because those died long ago. I'm asking $60 each, or $100 if you want them both, plus shipping. I'm open to other offers. Please E-mail me off list. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- FORTUNE: You're wise, but not wise enough not to read this sort of drivel. -

4 years, 1 month

Mac Performa 6214CD FTGH from San Antonio, TX (re-post; now tested)

by mark.tapley＠swri.org

All, Still trying to find a home for this system (re-post but with more information, testing) For the visually oriented, here are pictures showing the machine running: https://drive.google.com/drive/folders/11j__mCYOFuBAil58hAdhmSK5GMaqmcUL?us… Things in the pictures but NOT included in the giveaway are: 1) ADB cable (Mini-DIN4) (the one in the photos was borrowed from another system for testing) 2) ?square? ADB mouse (also borrowed) 3) Power strip You get everything else. Mac Performa 6214CD, PowerPC CPU, 3.5? floppy and CD drive on front face Apple Extended Keyboard II (NO ADB CABLE) Apple Apple Desktop Bus Mouse II (round - not working) Apple Multiple Scan 15 Display (matching, includes cable) APS external SCSI hard drive enclosure and cable (Centronix on the hard drive end, DB-25 on the Mac end) Epson Stylus Color 740 ink-jet printer with a spare (unopened) cartridge UMAX Astra 1220S flat-bed SCSI scanner. ZIP drive with SCSI interface Cables Pile of accompanying software including at least: DeltaGraph Now Up-To-Date and Contact Sad Macs, Bombs and disasters Retrospect Backup Astra Scanner Driver All Free to a Good Home. You want this if: a) you can afford shipping or pickup from San Antonio, TX, 78254, and b) 15 years after ?Take this job and shove it? came out you finally acted on it, quit your job and set up your own home office and accounting business, and now you want to relive your glory days. All items tested May 23, 2020. Everything worked, with the following exceptions: 1) The round ADB mouse included does not work. The keyboard does work and the square ADB mouse worked when plugged into it, so the fault is probably in the round mouse. 2) The printer doesn?t move any ink to the page. The ink is dried out, so I?m not at all surprised. I expect it to work with new cartridges, but did not test that. There is an unopened replacement cartridge included, so you can test at least the black printing if you open that. Replacement cartridges available at: https://www.compandsave.com/Epson_Stylus_Color_740_Ink_Cartridges_s/1396.htm under $4 each. Everything else about the printer seems to work. I hooked up to it via USB using my MacBook and software from http://gimp-print.sourceforge.net and it responds as expected for an ink-jet with dried-up ink but otherwise functional. 3) I have no ZIP cartridge to test the ZIP drive. It is recognized on the SCSI bus as a removable-media drive, power light comes on, etc, but I don?t know that it reads or writes. 4) The Mac OS 8.5 on the drive will not allow me to set the year to 2020. 5) Backup battery is dead, so the unit won?t remember dates between shutdown and startup again. 5) The door to the monitor?s controls is broken, and just taped back into place. Things that do work include the floppy drive, the CD drive (plays audio CDs), all other aspects of the computer itself and the external drive, the keyboard, and the monitor. Driver software and media for scanner and printer are included. The scanner works, I scanned an image with it and it came up clear. The glass could use cleaning, though. Please, please, please take this as a group, I really don?t want to split it up. Shipping will be challenging; if you are out of driving range but want it, contact me and we can talk. If you are in driving range and want it, let me know and we can meet half-way. Not looking to make any money, I just don?t want to throw it away and don?t want to lose money giving it away. - Mark 210-522-6025 office 210-379-4635 cell

4 years, 1 month

Looking for Diablo 44m filters

by cz＠alembic.crystel.com

Hi all! More non-discussion, technical stuff: I'm starting to work on restoring some of the old Evecon-6 servers that I used to lug to conventions 30 years ago. Right now I just dragged out my Plessy 20mb disk drive which is a Diablo 44 Perkin Elmer monster. Yep, the one with the 10mb platter on the bottom and 10mb removable platter on the top that looks like an RL01 pack but of course is not. First up is powerup, oddly enough it is powering up which is good. Second is the filter: If the filter is plugged the heads will crash, and this filter does not look great. It's a Cambridge Filter Corp CFC 1246159GO which maps to a Perkin Elmer part number of 302709-001 Google isn't helping, anyone know where I can get another filter or how I can clean/purge this one (if possible) Thanks! C

4 years, 1 month

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test-drb May 2020