test-drb December 2011

test-drb@ccmp.vtda.org

194 participants
247 discussions

Wanted: TI 733 KSR/ASR acoustic coupler or cover plate

by legalize＠xmission.com

Hi, If you take a look at this photo you'll notice an acoustic coupler attached to a mounting plate on the right hand side: <http://user.xmission.com/~legalize/tmp/TI_733_KSR.jpg> I'm looking for either the cover plate for this opening, or the acoustic coupler for this opening. -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

12 years, 5 months

Nuclear Data/Lilith board photos

by legalize＠xmission.com

<http://manx.classiccmp.org/collections/cgm/boards/> Also a Lilith/Eve board in there. Jos, is this a board you've already done? -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

12 years, 5 months

Looking for: "STP Connector Card" for a VT103

by derschjo＠mail.msu.edu

This is a long shot -- anyone have a spare "STP Connector Card" for a VT103? This is a small paddle board that plugs into the main VT100 circuit board (on the J3 slot). Basically it re-routes the external serial port internally in order to allow it to connect to the VT-103's internal PDP-11. It's a completely passive device and I have the schematic, PCB layout, and pinouts so it's not looking like it would be too difficult to just build one, but I figured I'd ask before I went through the effort. (And for those interested, I'm finally doing something fun with the VT-103 I got a few years ago. I've upgraded the backplane to 22 bits, and I've installed a QED 993 board (a 3rd-party 11/93 clone with 4mb memory onboard). Now I just need to work out the SLU connections for the terminal itself (hence the STP connector) and work out some storage... maybe I'll just borrow the SCSI card from my MicroVAX...) Thanks as always, Josh

12 years, 5 months

Oscilloscope vector display driver...

by dougcoward＠hotmail.com

Chuck said: > Well, if you want "vintage" (and I assume you do) there was at least > one such project in an old issue of Byte or Kilobaud (IIRC). Wow, that takes me back. I built one back in late 1984 on a board to fit into the expansion port of the C64. I believe it was Byte and I believe the project was originally for the Apple II. AFAIR The board had 16 buffers on the address lines feeding two precision resistor networks. One network for the lower 8 address lines connected to the oscilloscope X input. The other network for the upper 8 address lines fed the Y input. Giving you a 256 x 256 vector display of where the processor was accessing memory. I had a paying job to break software protection on some C64 games. And this help alot to determine which parts of memory where pieces of code were being stored. For a while I toyed with the idea of writing a vector verse of Tic-Tac-Toe by programatically putting jmp code pieces out in memory and jump from piece to piece in a loop create the graphics on the oscilloscope. --Doug Coward Poulsbo, WA The new home of the Analog Museum and History Center is http://www.cowardstereoview.com/analog

12 years, 5 months

Oscilloscope vector display driver...

by geneb＠deltasoft.com

On Thu, 8 Dec 2011, Bill Sudbrink wrote: > Al Kossow wrote: >> On 12/8/11 5:27 PM, Bill Sudbrink wrote: >>> too expensive >> >> typical here. >> >> glad to see your time is worthless. > > Quite the contrary, I enjoy designing and constructing digital > electronics. I consider it a pleasant use of my time. Bill, are you planning on something similar to the ZVG or something more complex? I'm going to need an X/Y driver myself here pretty soon. (I also need to find a good 4" round vector tube...) g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_! Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

12 years, 5 months

rj45 -> wireless ->rjr5 ?

by rdawson16＠hotmail.com

On the off chance somebody here has done this: I have 2 wireless routers, one connects to cable and I have an internet connection. Its a wifi too. I want to pick up that wireless signal with another router, locate it in the other part of the house to connect a wired ethernet device. its as if I want a wireless adapter, but not having an output that is usb, but a ethernet jack. Is this possible? Its to avoid running a long cat 5 cable thru the house. Randy

12 years, 5 months

Oscilloscope vector display driver...

by aek＠bitsavers.org

On 12/8/11 4:47 PM, Bill Sudbrink wrote: > Hi All, > > I'm thinking of building a "somewhat vintage" two-channel DAC board, > intended to drive an oscilloscope as a vector display. I'm just considering > parts now, unless someone has a really good design already set to build. > http://www.zektor.com/zvg/

12 years, 5 months

Oscilloscope vector display driver...

by wh.sudbrink＠verizon.net

Hi All, I'm thinking of building a "somewhat vintage" two-channel DAC board, intended to drive an oscilloscope as a vector display. I'm just considering parts now, unless someone has a really good design already set to build. By "somewhat vintage" what I mean is that I don't want to just drop in a modern "super chip" that will have ten (or more) times the power of the intended host computer which, by the way, is an SWTPc 6800. I figure the board will have some 8-bit processor on it. I'm leaning towards a Z-80. It will have an EPROM, some scratch static RAM, some glue logic to manage the communication with the SS-30 bus... and this is where I get fuzzy... a 1Kx8 dual ported static RAM and two DACs. These last two elements (the dual ported SRAM and the DACs) are where I don't have any experience. A little googling has led me to the IDT7130 for the dual ported SRAM and the DAC0830 for the DACs. Does anybody in cctalk land have experience with either or both of these chips? I have a source for the DAC0830, but I don't have a source for the IDT7130 yet. The basic idea of the design is for the 6800 to write a vertex list into the dual ported SRAM which the Z-80 then reads and pushes to the DACs. I'm hoping I can just hang these chips off of the Z-80 address and data busses like the RAM and EPROM but I need to do some more reading of the spec sheets. Any help greatly appreciated, Bill S.

12 years, 5 months

Unibug ROM for TI TM990/189 University Board

by eric＠brouhaha.com

Does anyone have the "Unibug" ROM that was supplied with the TI TM990/189 University Board? This was an educational and evaluation board for the TMS9980 microprocessor, an 8-bit-bus version of the TMS9900. It's not hard to find images of the "University BASIC" ROMs on the net. Those ROMs replaced the Unibug ROM. Thanks, Eric

12 years, 5 months

Word Perfect 5.1 Documents?

by brian＠quarterbyte.com

vintagecoder at aol.com wrote: > I didn't know there was any non-magical way to convert Bookmanager > to PDF. Are you saying you can do that? I can work with DCF and Bookmaster _source_ documents, not compiled binary Bookmanager, unfortunately. > I certainly am, since I have and have access to a bunch of > Bookmanager doc that is worthless on PCs although I love it on > mainframes. The comments I wrote yesterday (and posted to cctalk-request by mistake) are about the import and export filters provided with Word, WordPerfect, OpenOffice etc, not about DCF/Bookmaster, which really live in another world. I'll post those comments shortly. Bookmaster is pretty great, and it converts to DITA XML in a rather straightforward way, which is no surprise since the latter is a direct descendent of the former. 1978: :note text='Warning'. Don't run with scissors. :enote. 2011: <note type='warning'> Don't run with scissors. </note> DCF (which is the IBM branch of the RUNOFF family tree, upon which Bookmaster is based) is another story. In the hands of documentation folks, it was a markup format. In the hands of engineers, it was a programming language. When engineers wrote documentation, it was a hairy mess. I've untangled some "interesting" DCF documents. Brian

12 years, 5 months

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test-drb December 2011