test-drb March 2009

test-drb@ccmp.vtda.org

215 participants
310 discussions

books, free for cost of shipping from austin, tx

by frustum＠pacbell.net

I have box of books that I want to get rid of. The list starts with a bunch of Win32 API books. I collected them while I was writing my Sol-20 emulator. If I ever update the emulator again, I will rewrite it with wxWidgets, rather than messing with Win32 APIs again. If Win32 programming isn't of interest, keep scrolling down, as there are some other books that would be of more interest to the typical classiccmp'er. As usual, preference given to anyone who wants to pick it up, saving me the hassle of shipping. Preference to those willing to take more books. Windows 95 API How-To The Definitive Windwos API Problem-Solver Matthew Telles, Andrew Cook 750 pages + CD Windows Programming Annotated Archives Herb Shildt 520 pages + CD Windows 95 A Developer's Guide Jeffrey Richter Jonathan Locke 616 pages + CD Windows 95 A Programmer's Case Book Seven S. Chen 754 pages + CD Advanced Windows (Third Edition) Jeffrey Richter 1050 pages + CD Multithreading Applications in Win32 The Complete Guide to Threads Jim Beveridge Robert Wiener 368 pages + CD Windows 95 WIN32 Programming API Bible Book 1 Richard Simon 1378 pages + CD Windows NT File System Internals A Developer's Guide Building NT File System Drivers Rajeev Nagar (O'Reilly Press book) 774 pages + 3.5" floppy Programming Windows 95 The Definitive Developer's Guide to the Windows 95 API Charles Petzold, Paul Yao 1100 pages + CD Volumes 1-5 (that is all five volumes) of the Microsoft Win32 Developer's Reference Library Volume 1: User Interface Volume 2: Base Services Volume 3: Common Controls Volume 4: GDI Volume 5: Shell Each is around 750 pages Linux System Administration Vicki Stanfield, Roderick W. Smith 657 pages, (c) 2001 Elements of COBOL Programming Wilson T. Price, Jack L. Olson 375 pages, (c) 1977 Fortran IV (Second Edition) Organick/Meissner Standard Fortran WATFOR-WATFIV 293 pages, (c) 1974 BASIC (2nd Edition) Samuel L Marateck 475 pages, (c) 1982 York APL J. Morgan Smyth 100 pages?, (c) 1972 APL An Interactive Approach (Second Edition) Leonard Gilman and Allen J. Rose 378 pages, (c) 1976 Burroughs B 1000 Systems Interactive BASIC (IBASIC) Language Manual ~120 pages?, (c) 1974 Three ring binder holes, staples removed The Complete Rainbow Guide to OS-9 Dale L. Puckett, Peter Dibble 418 pages, (c) 1985

16 years, 1 month

12 hours for posts to appear

by aliensrcooluk＠yahoo.co.uk

According to Yahoo's timestamp I recieved this at "7 March, 2009 12:08 PM". I am replying at 9:40pm GMT 7 March. I haven't had any problem with my posts (though admittedly I don't post that often). Regards, Andrew B aliensrcooluk at yahoo.co.uk --- On Sat, 7/3/09, Robert Jarratt <robert.jarratt at ntlworld.com> wrote: From: Robert Jarratt <robert.jarratt at ntlworld.com> Subject: 12 hours for posts to appear To: cctalk at classiccmp.org Date: Saturday, 7 March, 2009, 12:08 PM I am not a frequent poster to this list, but I have noticed that any post I make seems to take 12 hours to appear. Am I doing something wrong or is this normal? I am posting this at 12:08 GMT. Regards Rob

16 years, 1 month

6800/6820 Address decoding help...

by derschjo＠mail.msu.edu

So I've given myself yet another project to fill my ever-lessening free time with: to write a Tek 4051 emulator. I have the ROMs (thanks again, Axel) and I've coded up a nice quick 'n dirty 6800 emulation. Now I'm working on figuring out how the CPU talks to the hardware... I have at my disposal the service manuals and a disassembly of the aforementioned ROMs. I also have a physical Tek 4051, but I'm loathe to start poking the PIAs without knowing what I'm doing, given that the screen's electron beam is directly controlled by the software, it's more than possible to burn a nice hole in the phosphor if I screw up :). The CPU talks to a set of 6820 PIAs, and from there it's fairly easy to figure out what bits hook up to what devices, given the schematics (and only slightly harder to work out how they need to be manipulated, by reverse-engineering the disassembly) but I'm having a heck of a time working out what addresses the PIAs' inputs & outputs are mapped to in the CPU's address space. The Service Manual gives a tantalizingly small amount of information about this in Vol. 1 -- it actually has a table of addresses but is very vague -- for example, I now know that addresses $878C-$878F are "Y-AXIS DA/TAPE" but I don't know which ones are for which, nor do I know whether they're input/output/both, etc... looking at where these addresses show up in the disassembly makes a few things clearer, but is not enough. So it seems obvious that the actual schematics would come to my rescue here... but I'm unable to decipher them to the point where I can determine how the PIAs are actually addressed by the CPU. I chalk this up to my lack of experience in digital logic & schematic reading. I guess what I'm asking: can someone out there help me work this out (or give me some pointers on how to attack this?). I want to learn how to do this and I need a bit of assistance... The 4051 schematics are on bitsavers (yay) at: http://www.bitsavers.org/pdf/tektronix/405x/070-2286-00_4051_Service_Vol2_M… For now, I want to concentrate on working out the display controls... the related schematic pages for these are: 4_02-03 (cpu), 4_02-10 (x d/a) and 4_02-11 (y d/a). Thanks for any advice... Josh

16 years, 1 month

Powering up a 20-year old MicroVAX II

by ard＠p850ug1.demon.co.uk

> In sending Roy the information on the markings I omitted what looks like a > "~" after the 250V marking (the casing fragment is damaged in that area), so Almost certainly the mains filter capacitors then... > the caps are probably rated for 250V AC. I can also see an X2 marking on one > of the caps (the other one is too damaged to see). As the damage is indeed > to two caps on the mains filter, I have purchased replacements which I will > be fitting this weekend. OK. If you replace like with like (same 'class', rated for 250V mains [1] and about the same capacitance value) you should have no problems. [1] Most filter capacitors sold in the UK are good for thsi, for ovious reasons. > > The rest of the PSU *appears* to be in good condition but I do not have > anything to test ESR with and I do not have a variac or the knowledge of how > to use one, so I am unsure whether I should attempt to connect the PSU to > the mains again or whether I should attempt to switch it on. If I do feel > brave I will only connect a load that I do not care too much about. Personally, I would connect it to the mains with dummy load (car bulbs or simuilar). I think it'll be OK. -tony

16 years, 1 month

1" paper tape buy ?

by csquared3＠tx.rr.com

On Mon, 2 Mar 2009 11:41:14 -0800 Rich Alderson <RichA at vulcan.com> said: >> From: CSquared >> Sent: Friday, February 27, 2009 2:53 PM >> I also seem to recall that Univac or some other computer manufacturer >> actually used a 90 (?) column card for even better packing density. >> I'll leave that improved calculation to someone who actually remembers >> how many columns those cards were blessed with. > Univac 90-column cards are Hollerith cards just like the "IBM" cards. > They consist of upper and lower groups of 45 columns of 6 round punches > (instead of the rectangular punches favoured by IBM). Interesting. I don't know how I remembered the 90 columns as I never worked with a Univac computer - only IBM's and various minis which mostly didn't even have punched card readers at all. I'm not real sure I've ever even seen one of the Univac punched cards. Your description of the hole grouping sounds like maybe they encoded characters as 6-bit codes vs. the "12-1 is an A", "12-2 is a B" scheme used by IBM. I'm not real sure that's even correct either - it's been a right good while. Later, Charlie Carothers -- My email address is csquared3 at tx dot rr dot com

16 years, 1 month

DSD-880 manual?

by IanK＠vulcan.com

Does anyone have a scan of the DSD-880 manual? I finally picked up one that I intend to put on my MINC-11 (it even comes with the Qbus card and cable). I've searched the "usual" sites to no avail.... Thanks - Ian The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense. - E. Dijkstra Ian S. King, Vintage Systems Engineer Vulcan, Inc. http://www.pdpplanet.org

16 years, 1 month

N8VEM topics, S-100 and Disk IO

by lynchaj＠yahoo.com

Hi! There are a couple of projects I am working in the N8VEM Z80 CP/M home brew computer project that may be of interest to the CCTALK community. First, I am working on an ECB to S-100 bridge device am designing a small low cost S-100 motherboard as part of the project. It has 4 slots and is intended for hobbyist use testing, prototyping, debugging on a bench. There is no case, power supply, or other advanced features. It is separate from the ECB to S-100 bridge board so it can be used by itself for related projects. I tried to send a message to CCTALK previously with a URL but it never gets posted to the list. So if you are interested in seeing the design just go to the N8VEM wiki page and the PDF file is in the "ECB to S-100 Bus Bridge" folder on the lower right hand side. The design is not yet final but main goal is low cost functionality so I will not be adding active/passive termination, more connectors, power supplies, or other things which will increase PCB area unless there is a compelling reason. Second, the N8VEM Disk IO board is finally available. It has an IDE interface and FDC based on the i8272. Initial testing seems pretty good although testing has uncovered some issues. There are several devices which are known to work with the IDE ranging from older hard drives to CF units. It is all documented on the wiki and in the mailing list. Several N8VEM builders are working with the Disk IO board and development is underway. If you are interested in either of the above, please join us on the N8VEM project. All the PCBs are available and all the information for hardware and software is freely and publicly available. In particular, I would especially ask those who have S-100 backplane and/or IDE and FDC design experience for help. Even if you don't build your own system we certainly could use some expert help in making this a better project. If you have any *constructive* comments, suggestions, questions, or would just like to discuss the subject you can reply here, on the N8VEM mailing list, or contact me by email. Thank and have a nice day! Andrew Lynch

16 years, 1 month

is it possible to rebuild old c64 hardware enhancements?

by dgahling＠hotmail.com

I was thinking about things like the "super card" and other drive/ copier enhancements that were made back in the day. I even had something from (super card I think) called "IHS Nibbler" (Index Hole Sensor) nibbler. which was a hardware/software copier mix, one part went inside the drive. I remember the "super card" had many different things, like a "ram card" that went inside the 1541 drive. is it possible to recreate these things? (I dont have any hardware any more) I doubt anyone owns the copyrights now, or alternatively I bet a "generic" hardware device could be made... Dan. _________________________________________________________________ Experience all of the new features, and Reconnect with your life. http://go.microsoft.com/?linkid=9650730

16 years, 1 month

12 hours for posts to appear

by robert.jarratt＠ntlworld.com

I am not a frequent poster to this list, but I have noticed that any post I make seems to take 12 hours to appear. Am I doing something wrong or is this normal? I am posting this at 12:08 GMT. Regards Rob

16 years, 1 month

C.mmp

by aek＠bitsavers.org

> wondered if anybody knew the eventual > disposition of this machine. As of a year ago, it and cm* were in storage at CMU. CHM was approached about taking them, but we heard nothing more about it since then.

16 years, 1 month

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test-drb March 2009