test-drb February 2012

test-drb@ccmp.vtda.org

158 participants
158 discussions

by schontman＠ymail.com

Hello all! I have been reading this list some time now. I have a Atari 8 + 16bit collection with hundreds floppies 5.25 and 3.5. I followed the post here about disk imaging and have seen Discferret and Kyroflux. Both look good to me but I use Linux so like the idea of getting a Discferret because its open source. However I found: http://www.fpgarelated.com/usenet/fpga/show/105048-1.php To me this looks Discferret has a problem with either race condition (pulse lost) or ambiguity (two encodings meaning same) and to me this looks this problem is valid for all dumps already made. I talked to other guys from engineering classes and one suggest using 12bits (instead of 8) for counter but this would mean having to few RAMs on the board. Does that mean to better not get a Discferret? Has anyone heard of problems with Kyroflux? Want to start making images soon. Greetings -- Jo

12 years, 10 months

12k-Zapple-BASIC commented

by holger.veit＠iais.fraunhofer.de

Hi all, several weeks ago someone asked for a Z80 BASIC, and my recommendation was the 12K Extended BASIC from TDL. I got several offline queries where to obtain this. I myself knew of a hex dump in a German Book (published there for academical and amateur purposes "because the company does not exist anymore"; the book was >from 1982). Under this premise I disassembled the hex dump and commented (almost) all code. I'll make this commenting work available to anyone who is interested. I don't publish it on a web page (I don't think I need one), but since the disassembly and my comments are CC-BY-SA, anyone else may feel free to do so. Send me a request offline to receive a ZIP file (86k) with the listing and the hex dump. -- Holger

12 years, 10 months

delphi to C++

by dgriffi＠cs.csubak.edu

Does anyone here have any experience with using automated tools to convert Delphi source code to C++? I'm trying to convert a Delphi thing for Windows that does little more than spit a firmware image out a serial port into plain C and I'm not making much sense of the Delphi code. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

12 years, 10 months

John Sculley interview part 1 posted

by david＠classiccomputing.com

>> At 5 minutes the guest has still not had chance to say anything the >> interviewer needs to get the guest to speak After the long introduction, I almost don't speak at all! The interview isn't just for hard core computer history enthusiasts, but also for a mainstream audience. > I got as far as when he started with "all I thought you ever did was fire Steve Jobs and ruin Apple" > > I don't care what you think of the guy, but that was just insulting. It was a joke, and John laughed at it. I then made sure to say to both the audience and John that I was joking. If you had listened to the introduction then you would have heard where I made it clear that I was a fan of John Sculley's and etc. Also, that I thought he was getting a bad rap. These are exactly the two main misconceptions which the interview addresses. Best, David Greelish, Computer Historian President, Atlanta Historical Computing Society Classic Computing The Home of Computer History Nostalgia http://www.classiccomputing.com Classic Computing Blog Retro Computing Roundtable podcast "Stan Veit's History of the Personal Computer" audiobook podcast Classic Computing Show video podcast

12 years, 10 months

S-100 6502 CPU board and S-100 8086 CPU board PCBs

by LYNCHAJ＠YAHOO.COM

Hi! I have 9 remaining S-100 6502 CPU board PCBs and 6 remaining S-100 8086 CPU board PCBs. My stock of S-100 PCBs are starting to dwindle so if you are considering getting one or both of these PCBs now would be a good time. Both 6502 and 8086 CPU boards for S-100 bus are fairly uncommon in the usual market places like eBay, etc. They are $20 each plus $3 shipping and $6 elsewhere. Thanks and have a nice day! Andrew Lynch

12 years, 10 months

What is a mainframe? (was Re: NASA unplugs last mainframe)

by terry＠webweavers.co.nz

I don't know much about mainframes. However, last night I watched an IBM presentation about mainframes on Youtube. Part 1 (of 5) is here: http://youtu.be/mPCvlr9QRII After watching all five parts, it seems that (contrary to what I thought) the mainframe is very much alive and in fact growing in market-share and use due to cloud computing etc. Of course there could be a bit of IBM spin in this. But, it then begs the question. What is a mainframe anyway, and can a clear distinction be made between the 'mainframe" and other server technologies nowadays? Terry (Tezza)

12 years, 10 months

Atari CX2600A parts...

by jules.richardson99＠gmail.com

What's the parts availability like for Atari CX-2600A consoles? I've been offered one locally which the owner says "has a missing knob" - at the moment I'm guessing that means one of the four control levers on the top has been snapped off (but I'm awaiting clearer info). I'm totally unfamiliar with these machines; if that is the case, I don't know if that also means there's likely to be PCB damage or if it's more of a cosmetic issue? They also say they can't find "a connector" to hook it up in order to test it - that's a bit light on detail, too! Again, I'm totally unfamiliar with these critters - do they have a built-in RF modulator and just use a standard co-ax cable to the TV? Or are they composite video output? Or something else entirely? What about PSU; is this internal, or an external brick? I expect its value in current untested state is peanuts (which might end up being a problem if the seller equates age with value) - even tested, complete units with a similar amount of games don't seem to sell for very much. It'd be nice to get a handle on cost to fix any external issues though (setting aside any electronic problems which might be lurking - are there any gotchas in terms of these beasts being known for bit-rot?) cheers Jules (never an Atari owner!)

12 years, 10 months

The Elf 2000 PCBs and GALs are available again

by william＠donnelly-house.net

I have another batch of Elf 2000 PCBs in stock while, as the saying goes, supplies last. It's the same deal as before - the PCB is a snap apart combination that includes the Elf 2000, Disk/UART/RTC and STG1861 individual PCBs. http://www.sparetimegizmos.com/Hardware/Elf2K.htm#Ordering The partial kit includes the aforementioned PCB and all the pre-programmed GALs and one OTP EPROM necessary for these three Gizmos. You have to supply the rest of the parts, however thanks to the feedback from some recent customers a current list of suppliers can be found in the Elf 2000 Wiki: http://www.sparetimegizmos.com/wdoc/index.php?title=Elf_2000 Bob Armstrong

12 years, 10 months

What is this: PR1ME computer terminal

by tosteve＠yahoo.com

A guy sent me this photo, of his one-piece PR1ME (spelled with s number 1) terminal. They were big in the 70's, not so much in the 80's. Is this something rare? http://oldcomputers.net/temp/prime-terminal.jpg

12 years, 10 months

Card reader update

by wdonzelli＠gmail.com

On the good news side, it looks like $200 for a decent Documation is an accepted price, and payment can be done with Paypal. On the not so good side, it looks like not this week. -- Will

12 years, 10 months

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test-drb February 2012