test-drb

test-drb@ccmp.vtda.org

101090 discussions

by charlesmorris＠hughes.net

Wayne (Teletypeparts at aol.com) posted this on Greenkeys a few days back, but so far there have been no responses. I don't have my DEC manual collection handy and my 8/A has a different console connector. I'm sure that someone here knows the pinout, or where to find that schematic diagram or manual page (isn't it a W076 card)? Please let him (or the list) know... thanks Charles >I am looking for the simple wiring diagram to connect a 33 ASR to a PDP 8. I >have the 6 wire cable with the flat molex connector that goes to the PDP 8. >The other end is just wire ends. I know that wires 2 go to 33's receive and 2 >to 33's send, the other 2 to the tape reader control, but not which ones. My >color pairs are black/white black/red black/green if that is >any help. But if I knew the molex pin layout, I could trace them back to the >right connection on the 33. > >Thanks, >Wayne.

18 years, 3 months

: Divide 10 bits by 10.

by cclist＠sydex.com

> Date: Sat, 19 Jan 2008 13:01:25 -0800 > From: dwight elvey <dkelvey at hotmail.com> > I'm not sure how effective that would be in Z80 code. It looks > like I'd at least need to do 32 bit coding to keep track of things. > I'd still need to calculate the remainder when done( I need both ). > The maximum sector index would be 800 decimal. Ah, then it's easy: ;* Divide 10 bits by 10. ; --------------------- ; ; Input in (HL) ; ; Quotient in (A), remainder in (L). ; Div10by10: ld de,(10 shl 6) ; divisor ld bc,0701h ; iteration count + 1 for xor xor a ; quotient Dtbt2: xor c ; assume set sbc hl,de ; subtract jr nc,Dbt4 ; if no carryout add hl,de ; add back xor c ; clear the bit Dbt4: rr d ; (carry is clear) rr e ; shift divisor add a,a ; shift quotient djnz dbt2 ; loop rra ; correct quotient ret ; a = quotient, l = remainder That will do it for values of a divident up to 1023. The algorithm can be extended somewhat by shifting the value of 10 left more places and increasing the number of iterations. I haven't tested it out on real hardware, but it should work. I've also got a divide 32-bits by 10 along the same line, if you're interested. It's fairly deterministic in terms of cycles; i.e., there's not a lot of difference in timing between a dividends of 0 and 799. Cheers, Chuck

18 years, 3 months

VMS 6.2 or older install media needed.

by pat＠computer-refuge.org

It looks like in order to get VMS running on my 11/780, I'll need to find install media for an older version than what I have now. VMS 6.2 seems to be the newest version that will run. Either a CD image or tape image should work; CD image is preferred. Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 3 months

VAX 11/780 diagnostics needed

by Gary＠realtimecomp.com

> On Sunday 20 January 2008 00:13, Patrick Finnegan wrote: > > I also would like to find the diagnostics for my 11/780. Either an > > IMD image of the RX01 or the actual files off the floppy would work > > best. > > I guess I can add the names of the ones I'm looking for: > > EVKAA Hardcore Instruction Test > ESKAB - ESKAM Microdiagnostics > ESXBA Bus Interaction Diagnostic > ESXBB VAX System Diagnostic > ESCAA Unibus Adapter Diagnostic > > Those should give me a good start into figuring out what's wrong, > hopefully. > Pat, Around 4 years or so ago, I sent Megan Gentry an almost complete set of 11/780 Diags on RX01 with the thought she would make them available. (I don't have any Vaxen.) You might check with her. I still have a spreadsheet of what disks I sent to her if you're interested in that. Gary

18 years, 3 months

VAX 11/780 diagnostics needed

by pat＠computer-refuge.org

I also would like to find the diagnostics for my 11/780. Either an IMD image of the RX01 or the actual files off the floppy would work best. Thanks! Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

18 years, 3 months

VT01 (yes, 01) manuals?

by djg＠pdp8.net

>Are there any pictures around of the 601 or 611? >(was one of them a rectangular storage scope with an "erase" button?) >-brad > There are now. Hadn't realized that my vintage computer festival east 2007 pictures weren't online. http://www.pdp8.net/shows/vcfe07/pics/DSCF0038.shtml

18 years, 3 months

Interesting search on Flickr (really it is on topic)

by evan＠snarc.net

Interdata / PE / Concurrent - which I think recently was bought by yet another company - is only a few miles away from the museum where we hold VCF East. Haven't picked a date yet for 2008, but if there's interest then we can probably get a lecture from our contact there. They donated a bunch of hardware to us. -----Original Message----- From: jim s <jwstephens at msm.umr.edu> Subj: Interesting search on Flickr (really it is on topic) Date: Sun Jan 20, 2008 7:37 am Size: 638 bytes To: "'cctalk at classiccmp.org'" <cctalk at classiccmp.org> I didn't realize I had a lot of time to kill tonight and put in "interdata" into flickr.com's search. It hits photos taken at a 2005 reunion which apparently was for Interdata, Perkin Elmer, and Concurrent ex employees. Probably from someone on this list, though the name didn't ring a bell. I won't post it here for privacy's sake in case the people who are mentioned would like not to be spammed. There are some nice photos of vintage equipment in the pile, which leads to other photo collections ... I have seen others mention lists for Dec equipment as well, but had not seen Interdata mentioned or searched for. Jim

18 years, 3 months

Looking for old issues of Datamation, late 60's with Fairchild/SEL Advertisement

by aek＠bitsavers.org

> Somewhere around '68 there was an Ad by Fairchild semiconductor showing >a SEL minicomputer. I've updated http://bitsavers.org/pdf/sel with a bunch more manuals, and some Datamation SEL ads >from 1965 and 1967. I didn't see any Fairchild ads in 1968 or 69 showing a SEL machine.

18 years, 3 months

Quirky computer collectors?

by jfoust＠threedee.com

I received this inquiry via another mailing list. I think it's legit. They're coming to the USA looking for "quirky" people. Might there be a classic computer collector they should feature? - John From: Rebecca Rusz Sent: Thursday, January 17, 2008 7:06 AM To: jzd at cvctv.org Subject: Att: extraordinary people Im Rebecca Rusz and I work with research for a swedish TV show called "the 100 most extraordinary people". We are producing the 6th season now, this time in America. The team consists of our two TV hosts Philip and Fredrik, a segment producer nad a photographer. They travel across the states meeting offbeat/quirky people in order to find americas most extraordinary person. My hope is that they will travel to Illinois at the end of January beginning of february, meeting people. Why Im contacting you is that I know that public access tv have a lot of quirky people, so Im wondering if you could help me digging up some people for us? We need the people who are quirky IRL and not just in front of the camera. Thank you in advance. If you want, leave your direct number and I can call you back to discuss some more. Looking forward hearing from you soon. Rebecca Rusz Research

18 years, 3 months

Interesting search on Flickr (really it is on topic)

by jwstephens＠msm.umr.edu

I didn't realize I had a lot of time to kill tonight and put in "interdata" into flickr.com's search. It hits photos taken at a 2005 reunion which apparently was for Interdata, Perkin Elmer, and Concurrent ex employees. Probably from someone on this list, though the name didn't ring a bell. I won't post it here for privacy's sake in case the people who are mentioned would like not to be spammed. There are some nice photos of vintage equipment in the pile, which leads to other photo collections ... I have seen others mention lists for Dec equipment as well, but had not seen Interdata mentioned or searched for. Jim

18 years, 3 months

Reading Polymorphic double density double sided disk

by dm561＠torfree.net

----------Original Message: Date: Sat, 19 Jan 2008 21:31:40 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: RE: Reading Polymorphic double density double sided disk > From: dm561 at torfree.net > > Date: Fri, 18 Jan 2008 18:20:45 -0800 > From: dwight elvey > Subject: Reading Polymorphic double density double sided disk. > > >>Is there an easy way to separate track from sector using Z80 code? >>Dwight > > ---------- > Might be easier in hardware with a monostable or two; if you're interested, > the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site > might be a useful read (schematics, timing diagrams, etc.): > > http://www.hartetechnologies.com/manuals/Vector%20Graphics/ > Vector_Micropolis_Disk_Controller_Tech_Manual.pdf > Hi Mike I already have a index, sector seporator. I built it with a 7438, 7414 and 2 555's. It works fine. One could use a single 556 but 555s are easier to find. What I mean is that the disk has index into the disk as 0 to 799 sectors. The disk is 10 sectors so one needs to divide this index by 10 to get the track number and the remainder is the sector number. The original code handle a 32 sectored disk. Because 32 is a power of 2, doing the calculations were much easier. Divide by 10 is not as easy. See my next post. If anyone wants a schematic of my index, sector pulse seporator, I can scan it and send it out. Dwight -----------Reply: Oops; careless reading on my part; I'd read "separate *index* from sector," instead of "track." Probably because I've been playing with the opposite, generating HS sector pulses from the index, also with 555s... mike

18 years, 3 months

SC/MP

by ajwills＠paradise.net.nz

In case anyone is interested ;-), I have moved my echo of Sipke de Wal's old website (xgistor.ath.cx) to http://www.xgistor-echo.mydyn.net (I had hosted it at xgistor-echo.ath.cx for two years but they seemed to want people to pay after two years free dns routing). (for those who hadn't seen it - He had a big collection of datasheets, emulators etc, and some stuff about SC/MP processor and TI-59 calculator that I haven't seen elsewhere) -- Tony (no, not *that* Tony, another one :-)

18 years, 3 months

are IBM RS/6000 40-bit 72-pin SIMMS ECC standard?

by compoobah＠valleyimplants.com

I have some 16MB IBM "40-bit" memory modules out of an RS/6000 (the 7012/370 or 7030/3CT compatible type). Roy's looking for some ECC SIMMS for a RAID controller. Does anyone know if these are standard ECC or proprietary? I know they are a different pinout than 32 or 36- bit 72-pin SIMMs. I've heard proprietary, same as the HP-9000 memory modules (very hard to believe looking at the ones that go in my C180), and standard ECC SIMMS - and they can't all be right.

18 years, 3 months

Reading Polymorphic double density double sided disk

by dm561＠torfree.net

Date: Fri, 18 Jan 2008 18:20:45 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: Reading Polymorphic double density double sided disk. <snip> >Is there an easy way to separate track from sector using Z80 code? >Dwight ---------- Might be easier in hardware with a monostable or two; if you're interested, the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site might be a useful read (schematics, timing diagrams, etc.): http://www.hartetechnologies.com/manuals/Vector%20Graphics/ Vector_Micropolis_Disk_Controller_Tech_Manual.pdf mike

18 years, 3 months

Disk formatting programs

by rcini＠optonline.net

All: I?ve completed the rehab and reconstruction of a CompuPro Disk 1 system for my IMSAI, creating a new system master from scratch. I?ll have a Web page about it up shortly. Anyway, I only have a simple disk formatting program that?s built into the monitor ROM. I?ve heard that some specific versions of CP/M have formatting programs but I can?t locate the source for one that?s appropriate for the Disk 1 controller (which is based on the 8272 VLSI). I can make the ROM version into a simple COM file, but I thought I?d poll the group before building it myself. Does anyone have the source code or a pointer to one? Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

18 years, 3 months

*Brand New* Sega/Yeno F.S.

by chrism3667＠yahoo.com

I have 2 I've acquired recently. I only want to sell one. 150$ + shipping. look here: http://old-computers.com/museum/computer.asp?st=1&c=1096 ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

18 years, 3 months

PDP 11 rescue.

by silvercreekvalley＠yahoo.com

Hi, I'm trying to rescue/restore a PDP 11/34A. The basic CPU looks to be in a good state, its been stored well. What I'd like to do is make up a small 19" rack of some kind (was this the DEC 'corporate' rack) or a regular rack if I cant find that, and add a suitable 11/34A compatible disk drive. I have a suitable VT. The 11/34A has a good selection of tape and disk interface cards so an RL02 or similar would probably work fine. Does anyone have anything available for sale or trade in the UK preferably. I can collect of course. I have plenty of PDP QBUS spares for trade if that's of interest - just no disks or racks. Thanks! Ian. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years, 3 months

Head alignment for legacy Sony FDD

by ajp166＠bellatlantic.net

> >Subject: Head alignment for legacy Sony FDD > From: "Peter" <pludikar at sympatico.ca> > Date: Sat, 19 Jan 2008 08:54:15 -0500 > To: <cctech at classiccmp.org> > >Hi, >I've been trying to create a working Sony MPF50W (as found in the HP1650B >logic analyser) from 2 damaged units. One unit had a fried board and the >other unit had physically damaged heads. I moved the heads and track 0 >sensor from the fried board to the other board and I need to do 2 things: a) >confirm that the "new" heads are actually working and b) realign the track 0 >sensor. I'm reasonably sure that the heads are okay, they show continuity >on some of the pins, but I'm not 100% certain that is what I should be >expecting. I can't find any obvious sources of information on where to >probe to see useful signals from the heads or find any procedure to align >the sensor. I have Tony Duel's diagrams of the HP9114 from hpmuseum.net . >Any suggestions on where to find this information or how go about this would >be really appreciated. > >Many thanks >Peter Most heads have two sets of windings. One for trim erase and a second for read/write. The organization varies but the trim is two pins or have one pin in common with R/W and the RW is often a centertapped winding (three wires) so you should see three connections of near zero ohms and a pair that are also near zero OR 4 pins that show near zero (common wire case). The test for alignment usually requires a calibration disk and scope but I've done it by doing reads of a known good disk and "finding the edges" and setting it for the middle. Track 00 is usually less critical so if it happens when the head out and you can boot or read the disk thats usually good enough. Allison

18 years, 3 months

N* HRAM 64K schematics, Parallel Port Schematics, and ZDOS info scans

by brain＠jbrain.com

I was finally able to scan a bunch of HRAM 64, Parallel Port for N* schematics and some ZDOS information into PDF today. As I no longer have a N*, I was wondering if someone here does N* and wants to own this technical information. Jim -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

18 years, 3 months

HP 9845 Microprocessors

by accutron＠woh.rr.com

I'm trying to nail down a few bits of information regarding the various hybrid microprocessors contained in the earlier versions of the HP 9845. I recently purchased a large lot of 9845 boards, looks like most of one machine plus the PPU from a second machine. All told, I have four hybrid microprocessors. Two are the 107-pin AEC-variant 5061-3001 processor, one on a revision-A PPU card and one on a revision-B PPU card. The other two are both mounted on a single card, which is presumably a pre-bitslice LPU. Of the two processors on this board, one is a 5061-3010, the other a 5061-3011. From what I understand, the -3010 is the original hybrid used in the 9825, and I read something somewhere that lead me to believe the -3011 is a microcode variant of the standard -3010. Are both of these processors part of the LPU? Most sources refer to the 9845 having two processors, the PPU and the LPU, and I haven't found any that say the LPU itself actually consists of two processors. Is the -3011 just a microcode variant of the -3010? Also, are there any microcode variations between the -3001 on a revision-A PPU card and one on a revison-B PPU card? Regards, Micah Mabelitini

18 years, 3 months

VLSI of classic architectures (was Re: 11/70 board set on e-bay. . .)

by jam＠magic.com

> On 15/01/2008 17:37, James A. Markevitch wrote: > >> Chuckles at the typo.Is the PDP-8 the only classic architecure from the mid > >> 1960's that was made with VLSI components. > > > > IBM 360 (still being made today) > > Is it? The 360 itself is not, but the architecture is, and in multi-GHz parts. > > PDP-11 (LSI-11) > > Definitely not mid 1960s. The first PDP-11 appeared in 1970, and LSI-11 > came out in 1975! Well, the architecture was conceived in April 1969, I believe :-). Guess that's not quite mid 1960's. James Markevitch

18 years, 3 months

copying a GAL/PAL

by chrism3667＠yahoo.com

can someone provide the specifics? I keep getting badgered LOL ever since I announced I own an XT-IDE card. The one I have is pretty simple, just some OTS logic, but for the PAL (or is it a GAL - damn wish I had a GAL-PAL LOLOLOLOLOL). Therefore I need to have a way to duplicate such, so at least I can provide a path for those that want such a card. Of course this will involved desoldering. Not that big a deal, I feel I can lay the component side in a tray filled with cool water (with even a fish pump to course fluid past the pins) and go to town. If I don't need to remove the chip, please let me know. Gracias Amigos! Then again if anyone can provide a known working schematic/plan for such a card, that would be all the better. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years, 3 months

Fw: Big Iron (was VLSI of classic architectures)

by mike＠brickfieldspark.org

> > That sounds like a really great project; I've found the website and it > looks interesting. I've always wanted to do something like that with a > mainframe but of course it's hard to find one and find a place to put > it. This kind of thing really inspires me to try and form some sort of > vintage/retro computing club at my university... just gotta find some > space! > Do you have that website url. Mike > > Message: 6 > Date: Thu, 17 Jan 2008 12:26:58 -0800 > From: "John Floren" <slawmaster at gmail.com> > Subject: Re: Big Iron (was VLSI of classic architectures) > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: > <7d3530220801171226m5a21f15fp45bd29f75ffe60e5 at mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On Jan 17, 2008 11:51 AM, Roger Holmes <roger.holmes at microspot.co.uk> > wrote: >> >> >

18 years, 3 months

MOMS Autograft4

by grant＠stockly.com

I traded about 15-20 hours of linux programming and consulting for two sight unseen computers, a complete Autograft system and an Osborne Executive 1 with manuals and software. Has anyone ever heard of an Autograft system? When I try to turn it on it fails. The hard drive grunts and then it sounds like its releasing a relay or solenoid. I plugged it into a regular desktop power supply and it does the same thing Then the access LED blinks morse code at me. Is there any way I can get it spinning to recover the data? What do you guys recommend? It was frozen last night but its warm now. It was manufactured in 1983. From what I can tell it has: 186 processor 512k RAM 20MB (or possibly 50MB) winchester 512x480 13" RGB monitor for graphics (8 "brilliant" colors the docs say) Wyse terminal for text Autocad 1.4 from Autodesk for CP/M 86 24x36" plotter 11x11 12 button digitizer (a tablet) And there is a receipt for $19,000 in the binder. : ) Grant

18 years, 3 months

40M drive for postage

by rtellason＠verizon.net

>From a private email: > >> D3142 Disk Drive P/N 134-500558-531 and I think I looked that up once > >> and it came back as a 40 meg drive. Has a 17 connectors for some kinda > >> plug in one place and 10 more farther over with about a 3/8 gap between > >> the two groups. Oh, well, hell. Here is a pic attached. > > > > Those connectors are marked as 34 and 20 pin, which means either MFM or > > RLL, depending. I have some of that old stuff around, but don't have any > > near-term plans to use any of it. Dunno anybody else who does, > > either. I can forward a snip of that info to the classic computers list > > and see if anybody wants it, though. Want anything for it? > > Nah, just postage if anyone can use it. I never will. I have the pic here if anybody wants to see it. Can any of you guys use this thing? If so let me know offlist and I'll put you in touch... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

18 years, 3 months

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test-drb