test-drb November 1999

test-drb@ccmp.vtda.org

211 participants
749 discussions

by truthanl＠oclc.org

I have data sheets on Sharp ( electronics corporation ) LCD units circa 1988. They Show a LM64015T Display which was also 640 X 400. Its logic was 5.0 V (MAX 6 V) and the Supply (LCD) drive is Typical -21V (Min- 32V. Max -14V) It was driven with a Yamaha V6366 display controller. There is also a TDK CXA-1301 Inverter spec'd which provides CCFT backlight voltage ( Typical 1000 Vrms @ 400hz) The Sharp LM64015T display is a 12 pin device, Pin 1 labelled S for Scan Start up high Pin 2 CP1 (clock pulse 1) Input Data latch (High to low) Pin 3 CP2 Data Input Clock Signal ( High to low) Pin 4 open Pin 5 NC Pin 6 Power supply for Logic Pin 7 Gnd potential Pin 8 Power for LCD Drive with pins 9-12 being display Data, D0 - D4 respectively - (High on)(Low off) This gives an Idea of typical voltages and interfaces of the era. This may not apply to the Specific Matsushita device you asked about. It points out that there are often Display Controllers Like Yamaha V6366 and High Voltage inverters like TDK CXA -1301 ( 100V- 1000V) for backlighting. Sincerely Larry Truthan > -----Original Message----- > From: Stefan Boss [SMTP:stefan.boss@gmx.net] > Sent: Friday, November 19, 1999 11:56 AM > To: Discussion re-collecting of classic computers > Subject: Old plasma display > > Hello > I have an old Matsushita plasma displays (from a Compaq PC I think). > Do you have any information about this (or a similar) display... any > datasheets about data communication or the power connector pins??? > > The display has the numbers > MD400F640PD5 > 7.0.13 C:60963 > > I'm very glad if you could help me... > > yours sincerely, Stefan > > > PS: I'm a student from Switzerland and I might be interessted to write a > assembler-program with my microcontroller system (MC68HC11G5) for the > display. > > Reference: > http://www.heydon.org/kevan/mlists/classiccmp/1998-08/msg01244.html > > > -- > Sent through Global Message Exchange - http://www.gmx.net

24 years, 10 months

Samuel Caldwell's book: Switching Circuits and Logical Design

by jdliles＠earthlink.net

I am Samuel Caldwell's grand-daughter and would be very interested in your copy of his book. Every copy I have ever found has been well used and is in poor condition. -- Jennifer Dowling Liles

24 years, 10 months

Tandy 2000

by leucoplast＠seanet.com

I'm also having the same problem on my 2000. I have a feeling that it's the floppy controller chip(s) but I'm not sure yet. At first I thought it was a bad power connector but they all check out OK. Then I replaced the FDs with no change. I even replaced the motherboard with a spare that I had but all that ever comes up is the "256k memory" line, and that's all. Still, I'm only making guess' here. I should say that I aquired my two machines, one with a hard drive, for free but they were not tested. I had to have a video cable made before I could see what was going on with the system, so I'm not entirely sure of what is supposed to happen on bootup. I had the same problem with a Tandy HX a while back, and that turned out to be a bad memory chip that was locking up the system when it ran it's memory test. I've been tinkering with my 2000 off and on as I get new solution ideas but so far, I'm stuck too.

24 years, 10 months

Cleaning Boards / Contacts

by allisonp＠world.std.com

<OK, I've got most of the boards out of the PDP-8/m, and some of them are <rather in need of cleaning. Anybody have any recommendations? I don't <remember what the suggestions were the last time this came up, I just <remember that my method (Pink Pearl Eraser) was recommended not to use :^) Dishwasher, bake at 160-170f until dry. All but the core plane. the core plane is fragile and the water jets would blow the mat away. The PDP-8F I have got that treatment. Vacuum the case well. Allison

24 years, 10 months

Tampa Hamfest

by rigdonj＠intellistar.net

I just got back from the Tampa hamfest. Besides all the odds and ends, I picked up a HP 9845 claculator, three old HP 2623 terminals, two HP 9885 8" disk drives, a HP 9878 system expansion box and 6 or 7 interfaces for the 9845. Some of the intefaces are brand new and haven't even been unwrapped. Also picked up a HP 7245 Thermal Plotter. A very strange item! It prints on thermal roll paper using a full width printhead but it does excellant printing and plotting. Other items of interest include a HeathKit ET-3100 digital trainer with manual, three IBM computer technical reference manuals (IBM convertable Vol I and II and PS/2 model 30) and a Tektronix 178 linear IC tester. I also found another manual for my Tektronix 4051 computer. This one covers the hardware for the disk drives. Also got some kind of I/O box for the 4051, I don't know exactly what it is yet. Also got four new manuals for a Tektronix digital trainer. I left behind a FREE & operable PDP 11/34 with expansion cabinet. I'm not real interested in DEC stuff and I didn't have room to haul it or to store it. I barely missed getting a very clean HP 45 calculator in the box with charger for $5. But a close friend of mine that's also a big HP fan got it so I'm not too upset. All in all, a pretty good hamfest! Joe

24 years, 10 months

PDP-8/m !!!!

by healyzh＠aracnet.com

I finally have a PDP-8/m. On the 1st of November someone that knows I'm looking for one notified me of a Internet auction that was ending in about 4 hours, and I was able to get the winning bid of $356 in (thankfully this wasn't on eBay). M8330 -- Timing board (system clock) M8310 \_ KK8E CPU control M8300 / KK8E CPU registers M847 -- MI8E Hardware Bootstrap Loader. M848 -- KP8E Power fail and auto-restart. M849 -- shield to isolate memory from CPU M8650 -- KL8E RS232 or current loop serial interface. G104 \ H220 > MM8E 4K memory (H220) G227 / M8320 -- KK8E Bus terminator It arrived today, and I just unboxed it a few minutes ago. As a result you can see the web page with pictures at the following URL: http://zane.brouhaha.com/healyzh/PDP8m.html Now, I've got to figure out where I'm going to put it for the time being. I also need to figure out what a couple of the cables that were included are for. Unfortunatly I think the console interface is a 20ma interface. However, there is a Canon plug that I've no idea what it goes to. I'll be cleaning it up before I try and fire it up. Unfortunatly I've got to leave for work in a little over an hour so that will have to wait till tomorrow. Also, the module list that I announced yesterday has grown in size considerably and now includes at least a few parts from the following systems: PDP-4 PDP-5 PDP-6 PDP-7 PDP-8 PDP-9 PDP-10 PDP-12 PDP-14 Programmable Controller PDP-15 PDP-16 The YADML can be found at ftp://zane.brouhaha.com/pub/ModuleList.txt Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

24 years, 10 months

IBM 5120 power question

by CLASSICCMP＠trailing-edge.com

>> Ah... Most 8" drives do have mains-powered induction motors, so the >> frequency does matter. I've seen reference to the odd drive with a 24V DC >> spindle motor, but I've never seen an actual drive like that (although I >> am sure they exist). If the motor 'looks' like a mains motor, has a large >> capactor can hung off it, and seems to have mains wiring going to it, >> then it's likely to be a mains motor. >The only 24V DC spindle motor that comes to mind at the moment was on >the Tandon 848-02 DSDD half-height 8" drive, Tony. In addition to those Tandons, there are also NEC and Mitsubishi HH 8" floppy drives with 24VDC spindle motors. For a challenge, how 'bout the other way around: what 5.25" floppy drives have 120VAC spindles? (If any!) -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

24 years, 10 months

Found in my old DEC stuff, S1022 manual

by wpe101＠banet.net

I came across a box of stuff from my old DEC days, and one of the things in it was a xerox output copy of the manual for System 1022 Data Management Software for TOPS-10. Is it, or any info from it, of interest to anyone? Will

24 years, 10 months

pdp-11/60 Semi-Rescue

by mbg＠world.std.com

>Didn't know an 11/60 was going on the trash block; those systems are >RARE. And they were one of two 11's that could actually be microcoded in >the field... (the other was the 11/03 with the WCS11) I've not seen or heard of one since the one I used to use at DEC... I've always wanted to have one to play with the WCS myself... I think I have some development code somewhere for it... If this cannot be saved, it will be a tragedy... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

24 years, 10 months

pdp-11/60 Semi-Rescue

by mbg＠world.std.com

>I am, however, going to save the CPU cards, any other cards, and the >backplanes. I will also try to save anything else that can be readily >removed from the machine. If you can take some tools, I would appreciate your getting the front panel from it... >I did try to find a taker for this beast, as you'll recall from the >lists, but unfortunately it's been almost a year and the potential takers >have not been able to get around to picking it up. He cannot wait anymore >and has arranged for a scrap metal dealer to pick it up this Monday. > >This is a sad situation, but at least I'll be able to save some of the >machine. I'll post to the lists with my results. This is sad... very sad... I wish I had space for it. I would take it in a second... Even without space, I would consider it, but there isn't enough time to arrange a rescue... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

24 years, 10 months

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test-drb November 1999