test-drb

test-drb@ccmp.vtda.org

101090 discussions

by dgriffi＠cs.csubak.edu

The three people who have yet to get the P112 kits they paid for have been emailed to verify that they're still at the snail addresses I think they're at. I will have a very small number of kits left over after this. I'm not saying how many until I've purchased some more parts and am ready to take orders. -- 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?

14 years, 8 months

Wang 4000

by aek＠bitsavers.org

http://www.ebay.com/itm/180729353405 well, this is pretty sad. someone just scrapping the contents of a "company museum"? "Thsi auction is for a front panel from one of the last Wang 4000 Computers made This is one of only about a dozen made that was in a company museum they slated for scrap I salvaged a few parts and got some great pictures before it was dumped"

14 years, 8 months

FS: Rack, Tape and Cassette drive for PDP in Boston area

by nick.allen＠comcast.net

email me for more info, must be able to haul it away, price is negotiable

14 years, 8 months

push buttons w/ LED

by tshoppa＠wmata.com

> In Adrian's photo of the Intel MDS225 here, > http://img9.imageshack.us/img9/6826/intel2.jpg > you can see a row of eight push buttons with LEDs in them just below the > CRT. > They are a really nice push button that I have a certain affinity for. > Does anyone know who made/makes those or have a modern source for them? C&K Digitast. There are knock-offs by others that look similar and are cheaper... but don't feel the same. http://www.ck-components.com/digitast/key-switch,10465,en.html Most of the C&K switches from the 70's are available almost verbatim (modulo ROHS and whatever) today. Tim.

14 years, 8 months

Finding one IBM 2741

by spedraja＠ono.com

I'm doing a review of all the IBM stuff which I took from the Datacenter in the last cleaning. Having one 3279 in working state and one 3278 almost (the logic board needs replacement), plus one 3178 still alive and one 3174 ready to work with Hercules, I should like to get one 2741. As difficult as the lottery, I suppose, but for try it... Regards SPc.

14 years, 8 months

intel mds 225

by tdk.knight＠gmail.com

this puppy just showed up as a donation from a company thats gone belly up sadly but its now got a home. software manuals drawings even the prom reader righter could be a usefull machean. http://www.flickr.com/photos/1ajs/6171038488/in/photostream/lightbox/ anyone seen one of these befor anything need to be done befor atempting to run it?

14 years, 8 months

SC Spreadsheet

by david＠thecoolbears.org

Does anyone know where source code is for the SC curses based spreadsheet - specifically, a version that will compile on OpenVMS on VAX? I have sc-7.16, but I'm not having much luck getting it to compile (it compiles OK on Linux). I saw some indications that pre-7.x versions will still compile on VMS, but 7.x and later will not. Executables would be OK, but obviously not as good as source.

14 years, 8 months

NTSC video output from Sinclair ZX81?

by charlesmorris800＠centurytel.net

I'm dusting off my ZX81 with 16k memory pack (the pair cost me $200 in 1981!) and have already discovered that the Z80A chip has definitely gone bad. (The HALT\ output pin sits at an indeterminate-level 1.2 volts even with the logic IC removed, and the CPU is halted). I had a Z80L (good for only 1 MHz and the clock is 3.5 MHz) in the junk box, but even so, swapping it resulted in lots of activity on the address, data, read and write lines, etc. as well as video pulses coming out of the custom logic chip, pin 16. http://www.mainbyte.com/ts1000/good_schematic_hi.jpg I'd like to take the output from that pin, which currently goes to a "canned" RF modulator through a couple of resistors and a diode, and instead convert it to NTSC video, as I also have a 9" monochrome CCTV monitor (75 ohm input) which would make a compact display. Can someone help me with a simple circuit to generate the appropriate RS-170 1 volt p-p video signal? thanks Charles

14 years, 8 months

TMA-11 Read

by iamvirtual＠gmail.com

Hi, I am trying to archive my tapes. I am having difficulty reading the tapes. I tried 2 tapes that are of low importance. I am able to read the first 2 records (the first record is 14 bytes and the second record is 512 bytes). I see the tape move for the read as well as the backspace operations. I setup a simulated environment to test prior to using real hardware. Using a slightly modified version of SIMH along with PDP11GUI and a virtual tape, I successfully read virtual tapes. Now that everything is working on a simulator, I am using the same code on real hardware. The real hardware is a PDP-11/10 with 32kw core memory, TMA-11 controller with TS03 tape drive. I also have a RK-11 controller with an attached RK05j drive which is available, but is not used during this scenario. I don't know the actual format of the tape. My goal is to get a binary copy of the tape suitable for use with SIMH. Now that I am using real hardware, I am getting a Record Length Error. I set the read buffer to 2048 bytes (1024 words). The values I have from the TMA-11 registers is as follows: MTS 001105 MTC 160202 MTBRC 000000 MTCMA 000000 MTD 000000 MTRD 000000 I am looking for some source code to figure out what is going wrong. I have reviewed the simple example in the TMA-11 documentation, but proper error handling is not performed. Thanks! ; +=============================================================== ; | read ; +=============================================================== ; | ; | Read record from tape. When an EOF is detected, 'rsize' is ; | set to 0. When the second EOF is detected (ie. end of tape) ; | 'exit' is set to TRUE. ; | ; | On Entry: ; | rsize has the number of bytes in the buffer ; | ; | On Exit: ; | all registers unchanged ; +--------------------------------------------------------------- read: mov #MAXTRIES, @#retries ; maximum number of retries retry: tstb @#MTC ; is controller available? bpl retry ; no, wait for controller 1$: bit #MTATUR,@#MTS ; is tape unit ready? beq 1$ ; no, wait for tape unit dec @#retries ; bpl 2$ ; retry halt ; too many reties (bails out here) 2$: mov #rbuf, @#MTCMA ; read buffer (buffer begins at end of code) mov #174000, @#MTBRC ; max buffer size (2048 bytes) mov #60003, @#MTC ; unit #0, 800bpi, read, go 3$: tstb @#MTC ; is read complete? bpl 3$ ; no, wait for completion mov @#MTS, R3 mov @#MTC, R4 mov #0, @#rsize ; assume EOF reached bit #MTAEOF,@#MTS ; did we hit EOF? (MTAEOF is 040000 bne done ; yes, so we are done tst @#MTC ; error? bpl 5$ ; no error mov #-1, @#MTBRC ; number of records to backspace mov #60013, @#MTC ; unit #0, 800bpi, read, go 4$: tstb @#MTC ; is backspace complete? bpl 4$ ; no, wait for completion br retry ; try read again 5$: mov @#MTCMA,@#rsize ; determine number bytes read sub #rbuf,@#rsize done: inc @#reccnt ; another record (or EOF) rts pc

14 years, 8 months

RTE IV-B HP 7920 Grandfather and Primary system disc (NOS)

by hp-fix＠xs4all.nl

I've two HP 7920 RTE IV-B cartridges one Grandfather and a primary system disc for the HP 21MX both seemed to be unused and have been in storage forever..(and should be cleaned for use !) I don't have a HP 7920 drive I do have a HP 7906 in unknown condition and a HP 2113B which I love to see running RTE. So I'm looking for someone willing to : sell or trade me a HP 7920 drive, or someone transfer the data from the packs to tape or disc or any other solution which provides me with the RTE-IV software for the HP 2113. If can't get a HP 7920 then the packs are for trade. I'm living in the Netherlands so picking up a 7920 in Europe is possible, shipping the packs to the US also but only . Please react off-list -Rik

14 years, 8 months

NorthStar stuff for sale

by lynchaj＠yahoo.com

Hi, I have one complete Northstar Dimension and another only missing some parts of the power supply. Northstar Dimension computers are quite rare machines from the era of transition from S-100 to the IBM PC clones. There are also a couple of Northstar Advantages in the original boxes. The Dimensions are also in the original boxes. There are some spare parts for the Dimensions and Advantages including some software and maybe some documentation. One more item is a NorthStar 15MB external hard drive. This is quite a large and rare unit. At least this is the only one I've ever seen or heard of. I am not 100% sure but it looks like it may be a 14" hard drive platter. Seriously, this thing is as big as a full sized S-100 chassis by itself. Due to the nature of these items, they are for local pick up only. I am not interesting in shipping these items. There is also some NorthStar software in original boxes, packing, etc TSS/A HD Horizon Order Entry and Invoicing HD Advantage (2) Inventory Control and Analysis HD Advantage Graphics BASIC DOS PIO Advantage Info Manager II HD Advantage TBS/OS Advantage Enhanced WordStar Advantage CP/M (5) Enhanced WordStar Horizon dBase II Advantage CP/M (3) dBase II Horizon 8/16 Upgrade Advantage Accounts Receivable HD Horizon NorthPlan FD Advantage NorthWord II FD Advantage TurboDOS 1.1.1 Horizon NorthNet Advantage (with board) CP/M 2.2 Rev L1.0 Horizon General Ledger HD version Advantage Accounts Payable HD version Advantage Image Maker Advantage CP/M TurboDOS I am willing to sell but due to size these need to be picked up (Ohio) in person. Please contact me for more details. Thanks! Andrew Lynch

14 years, 8 months

push buttons w/ LED

by chrise＠pobox.com

In Adrian's photo of the Intel MDS225 here, http://img9.imageshack.us/img9/6826/intel2.jpg you can see a row of eight push buttons with LEDs in them just below the CRT. They are a really nice push button that I have a certain affinity for. Does anyone know who made/makes those or have a modern source for them? Chris -- Chris Elmquist

14 years, 8 months

[rescue] Stuff needs new home

by toby＠telegraphics.com.au

On 24/09/11 8:32 PM, stephen price wrote: > Needs new home: > If you want it& want to give me a couple of $$ for range fees - or trade something - cool - otherwise just come get it! > No clue as to any current condition .... trying to clean out house& garage - haven't powered any of this stuff up in years. > Really do not want to box it up / ship etc - prefer local pickup - or meet somewhere in DFW area. > ... > Several dead LCD monitors (mostly dell) that just need new capacitors in the power supplies I can vouch that this is an easy repair. I've fixed four out of four LCDs - by replacing only the visibly bad caps - in the past few weeks (Samsung, Acer, and DCLCD). One shudders to think of how many fine working screens must get thrown out every day for such a trivial fault. For the first time I did it, I found the threads at http://badcaps.net/ helpful. --Toby > Argh - More junk I just haven't categorized yet .... > > Anybody interested? > Contact me off-list please if you are.... > It's all to the recycle/metal scrapper in about a week unless spoken for ..... > North Fort Worth TX 76148. > > regards > steve > _______________________________________________ > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue >

14 years, 8 months

Crossposting - Fwd: [rescue] SCSI/SCA/DLT/FC/etc Stuff needs new home [pick up in North Fort Worth TX]

by toby＠telegraphics.com.au

Another "take it or it's scrapped in a week" offer. --Toby -------- Original Message -------- Subject: [rescue] Stuff needs new home Date: Sat, 24 Sep 2011 17:32:01 -0700 (PDT) From: stephen price <sd_price at yahoo.com> Reply-To: The Rescue List <rescue at sunhelp.org> To: rescue at sunhelp.org <rescue at sunhelp.org> Needs new home: If you want it & want to give me a couple of $$ for range fees - or trade something - cool - otherwise just come get it! No clue as to any current condition .... trying to clean out house & garage - haven't powered any of this stuff up in years. Really do not want to box it up / ship etc - prefer local pickup - or meet somewhere in DFW area. qty 3 x sun v120 - currently no disk - 650 mhz proc - 1gb ram I think qty 1 x sun v210 - currently no disk - qty 1 x 1.2 ghz proccessor - 1 or 2 gb ram I think qty 2 x clariion fiber channel DAE qty 1 x clariion ATA DAE A big stack of fiber channel drives with trays, and a few ATA trays for the clariion A small stack of little 9gb sca drives A couple of 18gb sca drives, maybe an odd 34gb or 72gb as well qty x 2 DEC 10gb DLT changer Miscellaneous qty of 35/70 DLT drives (mostly from changers) 14 bay Athena IDE to SCSI drive array - with qty 14 x 250gb ATA drives installed Overland Data single drive 35/70 DLT autochanger - (10 cartridges) (I have a superDLT 320 drive that I had planned to replace the 35/70dlt) Sun 711 case Sun single drive 811 case qty 2 x 16port USB serial ports (solaris certified) qty 2 or maybe 3 IPX lunchboxes that have the TurboSPARC upgrade cpu chips several Cisco soho 91 home routers HP LJ4 (has additional memory, network card and Postscript chip) HP 4101mfp (has additional memory, scanner, fax attachment, network) Several dead LCD monitors (mostly dell) that just need new capacitors in the power supplies Argh - More junk I just haven't categorized yet .... Anybody interested? Contact me off-list please if you are.... It's all to the recycle/metal scrapper in about a week unless spoken for ..... North Fort Worth TX 76148. regards steve _______________________________________________ rescue list - http://www.sunhelp.org/mailman/listinfo/rescue

14 years, 8 months

Lots of Amiga stuff available

by dbetz＠xlisper.com

I recently acquired a bunch of Amiga equipment that I'm not sure I'm ever going to get a chance to use. I'm currently looking for someone who might want this equipment. I got it for free so I will pass it on at no charge as well. Just briefly, the main items are: 1) Two Amiga 500 computers 2) A sidecar style hard drive for one Amiga 500 3) an Amiga CD32 game machine 4) a Paravision SX-1 attachment for the CD32 with lots of additional ports to allow the CD32 to be used as a computer 5) two 1084s monitors 6) numerous floppy drives including a number of 3.5" drive and one 5.25" drive 7) software and manuals for most if not all of the hardware I've seen one Amiga 500 boot from the hard drive into Workbench. I've also seen the CD32+Paravision unit boot into Workbench from a floppy. I don't know the state of the second Amiga 500 but it appears to be in good condition. I'm in southern NH and would like someone to take all of this equipment. Thanks, David Betz

14 years, 8 months

Microcolour terminal

by ard＠p850ug1.demon.co.uk

Has anyone ever come across a 'Microcolour' terminal? It was made in the UK by Microvitec, who were better known for monitors (often BBC micros were used iwth Microvitec Cub monitors). I have a couple of the Microcolour base units here, no monitors or keyboards. Here's what I've discovered so far... On the rear are connectors for 'Host' (DB25 plug), 'Printer 1' (DB25 socket), 'Printer 2' (DB25 socket), Monitor (DB25 plug), Keyboard (DE9 socket), mains in/out (mormal IEC connectors, a couple of fuses and the on/off switch. The only feature on the front is a green power-on LED. Insdie is a PSU (the 2 units I have differ in the PSU design, but that's not vert important at the momnet0 nd a crdcage containg 3 PCBs (with aslot for a 4th). These plug into a backplane at the front fo the machine using 64 pin A+B DIN41612 connectors. The loweremost PCB carries the Host, Printer 1 and Keyboard connectors. On this board are the processor (6809), EPROMs, RAM (some of which is battery-backed -- I have removed the leaking NiCdsm there is no other damage), 4 6551 serial chips (for the printer 1 port, which is RS232 DTE, even though it's on a socket :-(), the keyboard port (TTL level), and the host port (it uses 2 6551s for this so yuo can have split baud rates I guess), a 6821 (used at least for the Printer 2 port which is thus a parallel interface, a cable rund from a SIL header on the PCB to the DB25 socket o nthe chassis), etc. One of the EPROMs has a label 'Regis' which seems to suggest what protocol it may use. The other 2 boards are video-relates. One seems to be text video (6845, several 6116 RAMs in a row on one edge, another couple of 6116s which may well be programmable character generator, there's no EPROM on this board), and lots of TTL. There's a 10 pin header which is linked ot part of the monitor connector. The last PCB seems to be graphics related. It contains 128K of DRAM, some 74S189 SRAMs for a oolour palette and again lots of TTL. There's a 15 pin header that links to the montior conecetor. Now for the monitor connector. It's a DB25 plug. One pin is not fitted, one is wired to chassis ground. 9 of the remainder go to the text PCB (one pin on the header is not used), the remaining 14 go to the graphics board (again one pin on the header is not used). Now fo the odd thing. All those signals are TTL level. The output of the graphics board (12 pins on the header) are the outputs of those palette RAMs. In other words 12 bits digital (I asusme 4 bits each for R,G,B). The otuput fo the text board is similarly a 4 bit value (I think). And of course there are 2 sync signals, which I could identify. Vsync is 50Hz (not too suprising), HSync is 21.8kHz. In other words, EGA rates .Sothis thing used a specail EGA-like monitor with many more input bits. I suspect I am goign to start by hooking up a normal EGA monitor (assuming I can find one, I think I have a 5154 around here) to see if I can get some output, albiet with fewer colours than I should have and then try modifying such a montiro t oincrease the numebr of bits on the DACs. As for the keyhoard, at least it's synchronous serial (of the pins on the DE9, there's TTL level TxD and RxD, ground, +5V, +12V, -12V). I have no idea of the baud rate, etc, but if necesary I cna use a logic analyser to see how it initialises the appropriate 6551. -tony

14 years, 8 months

Floodgap back up

by spectre＠floodgap.com

As shocked to see that I haven't been bounced off the list by now, Floodgap and all of its hosted projects are back in full operation on a new T1 from AT&T/DSL Extreme. Do not ever do business with Time Warner Cable Business Class. They took six weeks to do nothing, culminating in fairly nasty threats to their legal office to get them to release me from the contract. AT&T took almost four weeks, but at least they got the NIU in, and the router got activated today. Reverse DNS is pending. Sorry about the downtime. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- ** COMMODORE 64 BASIC V2 ** 64K RAM SYSTEM 38911 BASIC BYTES FREE ----------

14 years, 9 months

Stuff for Sale

by bdwheele＠indiana.edu

I'm cleaning out my computer room of things I don't use much anymore. I'm mostly looking to sell, but there are things I might be willing to trade for: * 400+ MHz Alpha workstation since both of my alphas died :( * DECstation 5000 since mine died as well Location: Bloomington, IN 47408. Terms: * Unless noted, everything worked the last time I turned it on * Cash only for local pickup * Paypal for shipped items + actual shipping costs SUN --- * Sun Ultra 5 $75 333 MHz UltraSPARC IIi, 256M RAM, CDROM, Floppy, No ATA HD * Sun 501-2520 $10 75MHz SuperSPARC II MBus Card * Sun Type 5 Keyboard 320-1073-01 $5 No cable & Missing keycaps: Right arrow, whatever is right of 'compose' and whatver is below 'open' * Sony CDU-8012 SCSI CD-ROM (50 pin) $10 Apparent Sun part number 370-1312; Caddy Load IBM --- * IBM RS/6000 43p 7248 $35 133MHz PPC 604, 96M RAM, 2.2G SCSI Disk, CD-ROM Digital ------- * Digital VT-420 [will not ship] $50 Amber, No Keyboard, MMJ connectors only * Digital VT-220 [will not ship] $50 Green, With Keyboard * Digital BCC08 Console Cable $10 Used with a MicroVAX II console * DECserver 200/MC $25 8 db25 ports, photocopy of the manual in binder * VAX C 3.0 Manuals $5 Run-Time Library Reference, Guide to VAX C * RA82 User Guide $2 * StorageWorks SBB w/o Drive $10 each 2x SCA Interface (DS-RZ1CB-VW) 4x 68-pin Interface (3x RZ28M-VW, 1x RZ28D-VW) 4x 50-pin Interface (3x RZ28M-VA, 1x RZ29B-VA) Apple ----- * Apple BNC Cable $1 Labeled "<<-/->>" on each end, Part 590-0540-A * Apple DB9 Cable $1 Part 590-0197-A * Nuvotech TurboNet Transceiver (2x) $10 Phone Net, with terminating resistor * Farallon PhoneNET Plus Transceiver $5 No terminating resistor Networking ---------- * Motorola SURFboard Cable Modem $10 * Xircom CreditCard Ethernet Adapter IIps $5 PS-CE2-10 * 3Com Megahertz 10/100 LAN PC card $5 3CCFE574BT * Accton ISA 10Base-T Ethernet (2x) $5 ea Plug-and-play * 3Com 3C595-TX PCI 10/100 Ethernet $5 * 3Com 3C905-TX PCI 10/100 Ethernet $5 * Realtek 8029AS PCI Ethernet $5 Twisted Pair & BNC connectors * Cisco Catalyst 1900 24-port 10BaseT Switch $15 Some cosmetic damage * 10Base-T AUI tranceivers (10x) $5 each 12" cord PC Stuff -------- * NEC CDR-512 SCSI CD-ROM (50 pin) (2x) $5 ea 6x according to the web; Caddy Load; Cannot be used to boot Sun boxes * Sony CDU-561 SCSI CD-ROM (50 pin) $5 No Face Plate; Caddy Load; May work for Sun boot, depends on PROM version * 6' DB25 M-M Cable $5 Black/green dot; probably scsi cable * Quick Shot Skyhawk Joystick $5 PC Compat, 15 pin. * Mustek Matador 105 Handheld Scanner w/ISA Interface card $5 * 10' Printer cable $5 * Adaptec AVA-1505Ae ISA SCSI Card $5 db25 external connector (only); solder pads for internal 50-pin * Adaptec AVA-2902E PCI SCSI Card $5 db25 external connector (only); solder pads for internal 50-pin * Mitsumi ISA CDROM Interface Card $5 * GVC PCI Modem $5 model 5-1156/R2F * Turtle Beach TB400 PCI Sound card $5 * Creative Technology Audio PCI CT5803 $5 * Trident TVGA 8800CS ISA Video card $3 Supports VGA and TTL output * PS/2 3-button Mouse (w/o scroll wheel) (3x) $3 * PS/2 2-button Mouse (w/o scroll wheel) (2x) $3 * PC Serial Mouse (3 button) $3 * Industrial Computer Source PC-73 $15 8-bit ISA card; Software (5.25") & Manual Looks like 8 channels of 12-bit A/D for thermocouples Other ----- * Serial to RJ45 adapter $5 DB25 (3x), DB9 (1x) * 8" Floppy Disks $25 2x Verbatim Unformatted 1S/1D 5x Tandy Unformatted 1S/1D 15x IBM Previously Formatted "Diskette2" 2D? * Logical Devices Prompro-XP Serial connection $10 Memory and Logic programmer; No software; Unknown condition; UV oven * HP HIL->PS/2 Keyboard Adapter Module $10 With 12" HIL cable and PS/2 Keyboard/Mouse ports

14 years, 9 months

OT: searching for Electrostatic Loudspeaker Design Cookbook

by bthomas＠brothom.nl

Hi, Can anyone provide a copy in some form of the "Electrostatic Loudspeaker Design Cookbook" ? A friend of mine is looking for a copy but the cheapest one we can find is $142 at abebooks.com Regards, Bert

14 years, 9 months

RK05

by cc＠informatik.uni-stuttgart.de

Hi, I'm trying to repair my RK05 drive. It seems that it doesn't find track 0 when loading the heads, thus moving the heads to the inner limit, forcing a return-to-zero and starting all over again. I think the fault is on the M7681 card (cylinder address and difference), the output of E16 pin 8 (CAD3 zero detect H) doesn't change, nor does the input on pin 10. And here comes the problem: the M7681 isn't described in any DEC documentation I've found so far (apart from the schematics), only the older M7702 card (the function is practically the same, but they are completely different designs). The new card contains several undocumented TTL ROMs (8223). The output of pin 6 of E1 goes to the input pin 10 of E16, probably a difference==zero bit. So here comes my question: does anyone have a ROM listing of these ROMs, especially of E1? I'd like to know what exactly that ROM is doing. Christian

14 years, 9 months

intel mds 225

by jzg22＠drexel.edu

... I've never seen one of those mds computers before, but as soon as I saw it I realized that it is what the Speech Plus/Telesensory Prose 2000 Speech Synth card which I have was originally meant for/designed for. The card I have is in a special speech plus 'prose 2020' metal case with its own power supply, and the two 'multibus'? edge connectors of the card are unused, power and serial and audio come from/go to special secondary connectors on the board. But clearly, without the special prose 2020 case, the prose 2000 card would be used in one of those computers with 'multibus'. Any chance you can dump the roms from the computer? Given that there don't appear to be any multibus cards installed, are there even any roms to dump? Adrian Stoness<tdk.knight at gmail.com> wrote: > whats in the front card slots > http://img9.imageshack.us/img9/6826/intel2.jpg > the back end > http://img716.imageshack.us/img716/7705/intel1c.jpg > http://img26.imageshack.us/img26/263/intel3q.jpg On Wed, Sep 21, 2011 at 10:54 PM, dwight elvey<dkelvey at hotmail.com> wrote: > Hi > It looks like it might need a little work. > The large board attached to the back of the unit > is called the IOC board. It is just a terminal board for the > keyboard/video. It also has various I/O such as the > single density disk controller. It has a 8085 on it > as well to run the terminal. > It doesn't look like it is working correctly. > It will need some trouble shooting. > First check the voltages. > Just curious, what boards do you have in > the UPP. There should be three boards in it. > The rear one is the controller and the two towards > the from are the personality cards. > Dwight > > > >> From:tdk.knight at gmail.com >> >> turned it on and the screen just shows this do i need to adjust the contrast nob in the back >> also a load squeel comes from it when powerd on >> http://img402.imageshack.us/img402/6826/intel2.jpg >> >> On Wed, Sep 21, 2011 at 8:20 PM, Adrian Stoness<tdk.knight at gmail.com >> wrote: >> >>> yea just the one card with the buttonss on it. >>> >>> also got drawings for it >>> >>> >>> On Wed, Sep 21, 2011 at 8:07 PM, Dave Mabry<dmabry at mich.com> wrote: >>> >>>> Adrian Stoness said the following on 9/21/2011 8:50 PM: >>>> >>>> this puppy just showed up as a donation from a company thats gone belly up >>>> sadly but its now got a home. >>>> software manuals drawings even the prom reader righter could be a usefull machean. >>>> >>>> http://www.flickr.com/photos/1ajs/6171038488/in/photostream/lightbox/ >>>>> anyone seen one of these befor anything need to be done before attempting to >>>>> run it? >>>>> >>>>> >>>>> >>>> I've got several of them. Love those old "blue boxes"! >>>> >>>> As for anything before running it, probably not. There is a >>>> three-position switch on the back panel. One position is diagnostics and will tell the firmware to run some tests. I would do that before trying to boot it, just to see if it finds anything wrong. There can be a few >>>> configurations of that hardware. The internal 8" drive can be single >>>> density or double density. It depends on what is controlling it. If the ribbon cable to the drive goes to the back plane board (called the IOC >>>> board) then the drive will operate in single density mode. If that ribbon cable makes its way to a two-board set in the cardcage, then likely it will operate in double density mode. >>>> >>>> ISIS-II is the operating system and will have to be in the density that the drive operates in. >>>> >>>> The standard 225 had a single-density internal drive, but there were >>>> options available. Whether the options were installed would not have been reflected in any labeling on the outside, including the model number. The standard cpu on the 225 was a board wtih an 8085 cpu with 64k of ram. That was the only board in the multibus cage, unless options were purchased and installed. >>>> >>>> Open the cardcage under the monitor and tell me what you see for multibus boards plugged in. With that info I can probably tell you more definitively what you have. >>>> >>>> Dave >>>> >>>> -- Jonathan Gevaryahu jzg22 at drexel.edu

14 years, 9 months

looking for a Tek Prism 3002

by chrism3667＠yahoo.com

contact me. off list. thanks.

14 years, 9 months

DEC GIGI - Power Supply Replacement Success

by mark＠wickensonline.co.uk

Folks, Always nice when you've got a piece of good news ;) I replaced all the mains filtering capacitors in the original DEC GIGI power supply when one blew only to find that the power supply lasted another 10 minutes before losing power completely. At this point I decided given the relatively standard power outputs (5V 3A, 12V 1A, -12V 0.3A) I would source a replacement power supply. This arrived and was installed yesterday. It I guess unsurprisingly is substantially smaller and lighter than the original. The original cooling fan was removed as it was basically transformed directly from either the mains directly or one of the windings of the main transformer. I used the fan out of an external SCSI enclosure as a replacement, although I look to source a high quality brand new one. To me it looks like the fan primarily is for cooling the PSU only - given the fan location and the location of the plate that the PSU is mounted on it looks unlikely that the main circuit board would benefit much. The machine now happily powers on and I had an hours playtime last night with the local BASIC monitor. The GIGI now only exhibits one minor trait, and I'm yet to determine whether this is down to the LCD panel it is driving being at limits or whether there is a slight issue with the video generation circuit. Once in a while, every couple of minutes or so the LCD looses sync and the picture is dropped. This only happens for a fraction of a second, then the picture is restored as was. If anyone has any ideas I'm all ears. For reference I'm using a Iiyama AS4637UT, an old but extremely capable 18.1" 1280x1024 native panel. If anyone is interested I can post the horizontal and vertical frequencies it is being driven at. I plan on scanning the GIGI brochures I have for inclusion on bitsavers shortly. Regards, Mark

14 years, 9 months

EDA Electronics cards??? got a bag of them duno what they're from

by tshoppa＠wmata.com

The form factor matches up to the Vector 22/44 0.156" card edge physical form factor standard. Which doesn't narrow it down at all. Millions of custom industrial systems (some micro-based, but most not) were built using these plugboard style systems from the 60's through the 80's. Vector sold card cages and proto cards; the one-offs usually used the proto cards but something that was made in small to medium quantity might have used a Vector card cage (perhaps hand-wired) and etched PCB's. Sometimes the backplane was a simple bus in the computer sense but usually not. Looking at the chip logos and mix of analog/digital I'd suggest this is from the late 70's/early 80's and is some kind of DAQ front end or perhaps digital-math servo system. You can narrow the date range down from looking at the date codes on the chips.

14 years, 9 months

New rsync mirroring at trailing-edge.com

by vintagecoder＠aol.com

Yeah, that's true. What you can buy today is gigantic compared to what was available not so long ago but now everything is digitized so stuff we used to keep on paper and video tape or 8 tracks and film negatives is now on the hard drive. There's never enough room any more and there probably won't ever be again. ------Original Message------ From: Chuck Guzis Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic and Off-Topic Posts ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: New rsync mirroring at trailing-edge.com Sent: 20 Sep 2011 16:45 On 20 Sep 2011 at 16:20, Vintage Coder wrote: > You guys and your extravagances! > > I couldn't mirror it on one of my Sun boxes, the biggest drive I have > is 73G... Well, I suppose it depends on your usage. To me, an 80G drive is huge; I can't generate relevant content fast enough. To someone who stores movies on their hard drive, it's unbelievably small. My friend who's a photographer keeps buying TB drives to hold his work. --Chuck

14 years, 9 months

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