test-drb August 2012

test-drb@ccmp.vtda.org

215 participants
247 discussions

by rampaginggreenhulk＠yahoo.com

not sure the 2nd 7220 in the APC is for more colors or not. They are on separate boards. My rather uneducated guess was a 2nd was needed to implement the virtual screen.

12 years, 4 months

Identify two cards (Unibus and Q-Bus)

by iamcamiel＠gmail.com

I picked up the last of Fred's stuff yesterday, and I have a couple of cards I can't find much information on: 1. UNIBUS card made by ComDesign Picture at http://flic.kr/p/cQ6PYd. Marked "Epsilon US 2000 Board" and "Assy no. 010231". It's got a 80186, 1 2910, 2 2901's and an 82586 (IEEE802.3 coprocessor). I therefore figure this is a UNIBUS Ethernet NIC (like a DELUA). Is anything known about these cards? DIP switch configuration would be good to know, as would the function of the 5 on/off toggle switches on top. 2. Q-BUS card, probably made by Plessey Picture at http://flic.kr/p/cQ6Rtf. Marked "P/N 703365-100D". Has a COM8017 UART. Nothing else known... Thanks, Camiel

12 years, 4 months

Looking for a DEC MXV11-B

by derschjo＠gmail.com

Anyone have an MXV11-B (M7195) going spare? I'd like to be able to use TU58 emulation to get my "tiny" (SB-11) 11/23 system bootstrapped, plus right now the only dual-height memory board I have is a mere 32K; the MXV11-B seems like a perfect fit for this system (128K, dual SLU, LTC, etc) if I can just find one... Thanks as always, Josh

12 years, 4 months

OT: Old radio and tv tubes in Omaha, NE

by rampaginggreenhulk＠yahoo.com

http://omaha.craigslist.org/gms/3188782630.html noticed in my travels. Doesn't hurt to alert :)

12 years, 4 months

Apollo DN590 workstation

by legalize＠xmission.com

Anyone got one? It's supposedly the first Apollo workstation to support 24-bit truecolor.[1] [1] <http://bitsavers.org/pdf/apollo/005808-01_Programming_With_Domain_Graphics_…>, pg. 6-17 -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

12 years, 4 months

Bits and Bytes (a classic computer show from 1983) now on YouTube

by prd＠decarchive.org

Hello all, I'm afraid I'm more of a long-time appreciator than a regular poster here, but I wanted to share a link to an archive of episodes and clips from the TVOntario show, 'Bits and Bytes' ? partly because there probably are a few people who saw this show when it originally aired and might enjoy a trip down memory lane, partly because it features many of the microcomputers that were popular in North America back then, and partly because its explanation of many of the key concepts are still relevant today. (Plus, for those who haven't seen it, it's also quite entertaining.) The channel is over at http://www.youtube.com/user/bitsandbytestvo, and I've included a modified blurb from that page below for people's information. Hope this brings back a few memories, and even educates a few of the people who are too young to have caught it first time 'round. This is the show that got me into computing and programming (my first computer was the Commodore 64), and I know that the episode on computer music, and the clip about compilers and interpreters have both been used to explain concepts in current computer science and computer music classes (as in, since the show became available again on YouTube). Cheers and (hopefully) enjoy! Peter P.S. And for those who are concerned about such things, from what I've been able to ascertain, this show is no longer available for purchase from TVO and, for that matter, they no longer have the full set of episodes in their own archives. ----- Bits and Bytes is a classic, and still foundational, Canadian television series about microcomputers and the key concepts behind them. It was produced by TVOntario in 1983, and stars Luba Goy as the instructor, and Billy Van as the student. The show consisted of 12 episodes and featured many of the classic 80s microcomputers including the Apple ][, Commodore PET, VIC 20 and 64, Atari 800, TRS-80, TI 99 and the IBM PC. The subjects were: Program 1: Getting Started Program 2: Ready-Made Programs Program 3: How Programs Work? Program 4: File & Data Management Program 5: Communication Between Computers Program 6: Computer Languages Program 7: Computer-Assisted Instruction Program 8: Games & Simulations Program 9: Computer Graphics Program 10: Computer Music Program 11: Computers at Work Program 12: What Next?

12 years, 4 months

Domain OS (was: NeWS)

by bqt＠update.uu.se

On 2012-08-09 22:10, Al Kossow <aek at bitsavers.org> wrote: > On 8/9/12 10:21 AM, Richard wrote: >> >I have been attempting to find details on the Apollo DOMAIN/OS >> >windowing environment before they started running X11, but so far >> >haven't been able to find much of anything. >> > > There wasn't anything in the Apollo documents on bitsavers? > > In the queue are about 100 ESDI Apollo disks with what HP had left of Apollo's > development environment. I'm hoping they're still readable. Gah! It's over 20 years now since I used the window system on Domain OS, but I still shudder at the memory. It was not fun. From what small details I can still remember it made no difference between the mouse pointer and the text cursor. Move one, and you moved both. Input for a window was normally done in a special sub-window one line high, at the bottom of the window. In general it was weird and somewhat unintuitive, and we *longed* for a switch to X11, but since X11 took much more resources, it took a few years before we actually switched. There were some cool concepts in Domain/OS, but for the most part, it was just weird and horrible. Johnny

12 years, 4 months

X Window server for NEC 7220

by dm561＠torfree.net

Original Message: Date: Fri, 10 Aug 2012 13:53:41 -0400 From: "Andrew Lynch" <LYNCHAJ at yahoo.com> .... The NEC uPD7220 readily adapts itself to the S-100 bus and provides a nice VGA monitor compatible bitmap. However it is completely non-VGA compatible and really is as different from the MC6845 derivative as can possibly exist. It uses a totally different approach down to the philosophical theory of design! If you or anyone else has some insight on how to implement a register compatible SVGA on the S-100 bus I am very willing to listen! Thanks and have a nice day! Andrew Lynch -------Reply:------- Isn't it always the way... a couple of weeks ago I finally threw out about 4" worth of detailed OEM documentation about designing for and implementing PCChips VGA chips, among others... The NCR Decision Mate (for one) used the 7220 and I even still have some of the guts of one including the video board if it's any use to anyone. IIRC there were some drivers etc. to make them semi-compatible with the PC; maybe you can find something useful among the NCR crowd?

12 years, 4 months

Found a rs6000 43p

by michael.99.thompson＠gmail.com

> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de> > Date: Fri, 10 Aug 2012 16:42:31 +0200 > Subject: Re: Found a rs6000 43p > John Many Jars <john at yoyodyne-propulsion.net> wrote: > >> This one has AIX on it... it fails bootup and drops you to some sort >> of prompt right after it plays it's tune (with the little speaker >> icon). >> >> You can type ls at the prompt and gets what looks like a list of devices. >> >> Should I bit it, or is it worth trying to fix? Anyone point me in the >> right direction? > There are several different variants of 43P. This one seems to be a > 43P-150 because you can type "ls" and get a divice tree. This sounds > like the OpenFirmWare of a CHRP machine. The enclosure of the machine > should be black? > > You have a quite capable PPC machine there. You could reinstall AIX. > Instalation media should be obtainable. An other option is to install > NetBSD. Maybe it drops to OFW just because autoboot is disabled. Try to > type "boot" at the OFW prompt and see.. > > \end{Jochen} It should also run Solaris 2.5.1. I think I have the install CD. -- Michael Thompson

12 years, 4 months

Tractor Feed Teletype?

by robert.jarratt＠ntlworld.com

Someone I know on this list has an ASR33 Teletype which has a tractor feed. I am sure that all the ones I used at the time were friction feed. Was tractor feed a common thing on these terminals? Regards Rob

12 years, 4 months

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test-drb August 2012