- test-drb@ccmp.vtda.org - classiccmp.org

by tulsamike3434＠gmail.com

I am sure a few of you have extra Apple 2's laying around and I have a couple apple iPhone 5 in mint cond please let me know what ya have or a commodore pet. -- *Mike's ?Honda ATC 3wheeler? Shop? for LIFE!!!* * Have a blessed day!*

10 years, 4 months

1
0
0 0

Apple Lisa I/O board diodes

by witchy＠binarydinosaurs.co.uk

Hi folks, 'Decaying battery' panic led me to unearthing my Lisa 2/5 to check the state of the batteries on the I/O board since it hadn't been out of its box or powered up since 2005. Fortunately the damage is very minimal and is only restricted to track discolouration and external rotting of one particular diode which I can't find mention of on my schematics. Anyone with a 2/5 care to check their I/O board for me please? The diode is D8, just above the battery location. It's in the board in such a way as to make its markings pretty unreadable in the pictures I took before cleaning, but it's the only white diode in the machine and I'm guessing it might be a 5.6V 1N4734A based on what I can see. Fortunately it still works for now, 0.7V voltage drop. Pic of the board before cleaning is at http://www.binarydinosaurs.co.uk/LisaIOBoard.jpg Cheers! -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

10 years, 4 months

3
5
0 0

got it. RE: Looking for PDP handbook

by COURYHOUSE＠aol.com

Rich and Jay this middle book in this url is the one we have here at museum the thin one Jay is sending you we have never owned. Is it uncommon or?? Yes by all means photo/scan the thing! https://www.flickr.com/photos/131070638 at N02/25092973706/in/photostream/ the 11/40 series books seem to be the ones we run into the most and I should round them all up from the various buildings and keep 2 sets and blow the others out for people to set next to their processors. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/19/2016 4:50:26 P.M. US Mountain Standard Time, jwest at classiccmp.org writes: Richard wrote... -------------- All -- I've been searching for an online version of the LSI-11 Processor Handbook from 1975 (which I think covers the 11/03) but I can't seem to locate it anywhere. Does anyone have a link to it or, alternatively, a real copy that maybe I can scan? --------------- I probably have several hundred of those dec handbooks, organized by year. I just pulled the one you want... https://www.flickr.com/photos/131070638 at N02/25043539971/in/dateposted/ Richard - it's yours for "the cost of a beer if we ever meet". All I ask is that if one isn't online anywhere, you make reasonable efforts at some point to get it scanned and available to the public. Email me your shipping address off-list. J

10 years, 4 months

1
0
0 0

got it. RE: Looking for PDP handbook

by jwest＠classiccmp.org

Richard wrote... -------------- All -- I've been searching for an online version of the LSI-11 Processor Handbook from 1975 (which I think covers the 11/03) but I can't seem to locate it anywhere. Does anyone have a link to it or, alternatively, a real copy that maybe I can scan? --------------- I probably have several hundred of those dec handbooks, organized by year. I just pulled the one you want... https://www.flickr.com/photos/131070638 at N02/25043539971/in/dateposted/ Richard - it's yours for "the cost of a beer if we ever meet". All I ask is that if one isn't online anywhere, you make reasonable efforts at some point to get it scanned and available to the public. Email me your shipping address off-list. J

10 years, 4 months

2
1
0 0

Looking for a file (HP-UX 11.x)

by mountainlogic-systems＠comcast.net

I have some PA-RISC workstations in storage and an itanium server (that is a bit more accessible) that should both have 11i on them - it amy be a while before I can get to either of them - what would you need? > ------------------------------ > > Message: 28 > Date: Fri, 5 Feb 2016 18:23:31 -0500 > From: Bryan Everly <bryan at bceassociates.com> > To: cctalk at classiccmp.org > Subject: Looking for a file > Message-ID: <6592215753613049498 at unknownmsgid> > Content-Type: text/plain; charset=UTF-8 > > Does anyone out there have access to an HP-UX 11.x system? I am > looking for a ROM image file for the FX-e video card to help me write > an OpenBSD frame buffer driver for this platform. > > Thanks, > Bryan >

10 years, 4 months

1
0
0 0

Looking for PDP handbook

by COURYHOUSE＠aol.com

Problem with scanning those handbooks - it is a destructive process mashing them in a flat bed. Maybe using one of the hold the book and photo the pages works well? or.... find one that is blown apart already... Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/19/2016 9:37:50 A.M. US Mountain Standard Time, rich.cini at verizon.net writes: All -- I've been searching for an online version of the LSI-11 Processor Handbook from 1975 (which I think covers the 11/03) but I can't seem to locate it anywhere. Does anyone have a link to it or, alternatively, a real copy that maybe I can scan? Thanks! Rich Sent from my iPhone=

10 years, 4 months

6
11
0 0

Non-binding-breaking Book scanners (Was: Looking for PDP handbook

by COURYHOUSE＠aol.com

well... the trick is to have book partially open not cracked and to have 2 cameras for fast production copy and uniform size on the size as cameras are fixed clear material flattens pages sure if just a page or so a camera even hand held works... but if you are humping pages all day long..... you need this thing! Ed Sharpe archivist for smecc _www.smecc.org_ (http://www.smecc.org) In a message dated 2/19/2016 4:37:12 P.M. US Mountain Standard Time, tdk.knight at gmail.com writes: Why does someone just take a photo with their camera On Feb 19, 2016 5:09 PM, "Fred Cisin" <cisin at xenosoft.com> wrote: > On Fri, 19 Feb 2016, geneb wrote: > >> *sighs theatrically and shuffles off Fred's lawn* >> > > well, if you had brought beer, . . . > > > >

10 years, 4 months

1
0
0 0

Non-binding-breaking Book scanners (Was: Looking for PDP handbook

by COURYHOUSE＠aol.com

...And when you look at the site you will see guy in dust mask. when scanning fungus ridden or moldy material a must although I prefer a class A respirator. We have an offsite storage we call the tombs and it smells like one... but it is for martial that is biohazzard challenged that we want to scan someday. too awesome to toss but too ucccky to have in the archive, museum area or library. If another copy shows up and/or someone scans a copy then the ucccky held copy is discarded. If not at least a copy is saved here and sometimes we suit up and scan some of it. Ed Sharpe archivist for SMECC In a message dated 2/19/2016 12:21:24 P.M. US Mountain Standard Time, cisin at xenosoft.com writes: >> http://www.diybookscanner.org/ :) > Ooh, that's pretty cool. Yes, but, . . . I've participated in building a few similar devices. Instead of the two sides MEETING in a V, there should be an open area right at the spine to accomodate the greater thickness of the spine itself. Having the two side panels able to slide up and down, with pegs, a few inches would accomodate that and permit a varying amount of spine clearance. Lighting. Ideally, lighting for copy work should be at a 45 degree (1/4PI) angle. That way specular reflection (glare) from glass cover (still needed occasionally!) or even just glossy paper, is not going towards the camera. If the trough faces north/south, then that can be done with light(s) north and south of the unit. Using two lights makes it much easier to get acceptably even illumination. Some people prefer various forms of diffuse light, or coaxial lighting ("ring" light). Having the camera at a fixed position relative to the work holder is great IFF you are doing consistent size. Different sizes could be dealt with through variable focal length ("zoom") lenses, but that is not always the ideal solution. I like to use FLAT-FIELD lenses, which are generally fixed focal length (sometimes called "primary lenses"). Enlarger lenses are an extremely cheap source for those. Being able to move the camera/work distance closer/farther requires a movable mount to change distance, but keep the camera centered relative to the work. North/south motion can be easily handled by moving the book along the trough, preferably with a fence, or simple bench-dog stops. The other motion generally requires the camera mount to be a pole at a 45 degree (1/4PI radians) angle relative to the work. Since the work is at a 45 degree angle from vertical, that means that the pole can be VERTICAL, with the camera mount aimed at a 45 degree angle. The post should be offset slightly from the north/south center, with the movable camera mounts holding the cameras at 45 degree angle (preferably with the focal node close to that central plane). Positioning of the book would require placing it so that it is centered north/south (calibration marks, as well as fence or bench-dogs, are very helpful!) and moving the camera up and down and focussing for distance. NOTE: use of other than 90 degree (1/2 PI radians) for the book holder would require further changes! -- Grumpy Ol' Fred cisin at xenosoft.com

10 years, 4 months

1
0
0 0

Looking for PDP handbook

by rich.cini＠verizon.net

All -- I've been searching for an online version of the LSI-11 Processor Handbook from 1975 (which I think covers the 11/03) but I can't seem to locate it anywhere. Does anyone have a link to it or, alternatively, a real copy that maybe I can scan? Thanks! Rich Sent from my iPhone

10 years, 4 months

2
1
0 0

BDV11 'mis-feature'

by jnc＠mercury.lcs.mit.edu

So I recently discovered that the LTC feature on the BDV11 bootstrap board has a minor issue: the latch that stores the 'LTC enabled' bit is _not_ cleared by INIT (unlike every other PDP-11 device I've ever heard of), but only by a direct store into the LTC CSR, _or_ power cycling (BDCOK, to be exact). This means that once you turn the LTC on using the BDV11, neither an INIT instruction, nor a 'Start' command to ODT, will disable it! Needless to say, it tends to scramble the booting process when an LTC interrupt shows up before the software is ready for one... I _was_ going to ECO the board, to connect BINIT to the clear input of the latch, but... I now think I know why DEC did this. There is no bus receiver on BINIT! (And there is, alas, no empty DIP space I could put one in.) I'm seriously tempted to connect the 'reset' circuitry on the BDV11 to BINIT, instead of BDCOK. That would mean that hitting the reset switch on the BDV11 wouldn't emulate a power cycle any more, but maybe I could live with that - I never use that switch anyway. And it would be _so_ nice to have 'Start' disable the LTC... Noel

10 years, 4 months

2
1
0 0

RE: 928 gig classic computer manuals looking for seeders I am going on vacation Ill see y'all Tuesday

by barythrin＠gmail.com

Might be shooting the messenger in this case though? He didn't create the torrent just sharing that he found one and is trying to download it but having trouble due to lack of full copies being shared so he doesn't have it all yet. Unless you meant violation in tos of this mailing list? Just trying to protect him from potential misunderstanding ;-) <div>-------- Original message --------</div><div>From: Jay West <jwest at classiccmp.org> </div><div>Date:02/18/2016 1:24 PM (GMT-06:00) </div><div>To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> </div><div>Subject: RE: 928 gig classic computer manuals looking for seeders I am going on vacation Ill see y'all Tuesday </div><div> </div>The OP has blatantly violated what he expressly agreed to. Perhaps someone who is "bitter" has a good reason to be?

10 years, 4 months

2
1
0 0

Kim 1

by barythrin＠gmail.com

Jose, What model is it and what are you asking about? Selling or seeking help to use it? It would also help folks if you mention where youre located. Members near you may speak up. - John? <div>-------- Original message --------</div><div>From: Jose Manuel <uribecosta123 at gmail.com> </div><div>Date:02/16/2016 10:05 PM (GMT-06:00) </div><div>To: cctalk at classiccmp.org </div><div>Subject: Kim 1 </div><div> </div>I have a Kim 1 board. Please contact. Thanks.

10 years, 4 months

1
0
0 0

IBM 3101-12 ASCII terminal - need fuse holder

by ethan.dicks＠gmail.com

Hello, all, I was just gifted with an IBM 3101-12 ASCII terminal that happens to be missing the fuse and fuse holder. Unlike a lot of 1960s and 1970s gear, it's not round. It's square. Is this a standard IBM thing from the 70s/80s? Anyone know where I could get one? It seems to snap in and probably fell out at some point under its previous owner. Also, I found only a little info on it from Googling. Later IBM ASCII terminals emulated ANSI command or Wyse-50 or something. I couldn't find anything on the 3101. Is it a glass TTY or does it respond to any cursor positioning, etc. commands? Thanks for any tips and info. Worst case, I can bodge in a fuse on the inside, but if I can find a replacement holder, I'd like that more. Thanks, -ethan

10 years, 4 months

6
12
0 0

928 gig classic computer manuals looking for seeders I am going on vacation Ill see y'all Tuesday

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > * slow clap * I myself am waiting expectantly for the Encyclopaedia Dramatica page... Noel

10 years, 4 months

1
0
0 0

928 gig classic computer manuals looking for seeders I am going on vacation Ill see y'all Tuesday

by tulsamike3434＠gmail.com

By the way I found a 900gig of old computer manuals 1955 - 1992 PDF files just trying to find some seeders grrrrrrr I will let yall know when they are done downloading! -- *Mikes ATC Shop A how To Youtube Channel https://www.youtube.com/channel/UC5OzVS_CmCOLjjztbRiPuKQ?view_as=public 405-481-4715 *

10 years, 4 months

9
11
0 0

Anyone have DIBOL-11, CTS-300, or CTS-500?

by spacewar＠gmail.com

Does anyone have the DIBOL-11 software, which was packaged for RT-11 as CTS-300, and for RSTS as CTS-500? My immediate interest is for RT-11, though I have a DECdatasystem-570 that I believe was originally sold with CTS-500, so it would be really nice to get that as well. It would also be nice to get scans of related documentation, if anyone has it, including: AA-5519A-TC Introduction to CTS-300 and DIBOL AA-5697E-TC CTS-300 Release Notes and Installation Guide AA-5495A-TC CTS-300 Concepts and Facilities AA-1760F-TC DIBOL-11 Language Reference Manual AA-5972D-TC DECFORM User's Guide AA-5025B-TC CDS-500 DIBOL User's Guide

10 years, 4 months

7
9
0 0

DEC VT30-H info

by shadoooo＠gmail.com

Hello Henk, thanks for the link. It talk about two boards (one hex and one quad). In effect mine are hex and quad. But the hex board has three IDC connectors, while the quad only two. My suspect is that the third connector could go to some other module. Do you have the VT30-H system too? Could we compare the boards? About documentation: I can't find the Option Bulletin cited on the text. Thanks Andrea

10 years, 4 months

3
2
0 0

PCS Cadmus/QU68000 systems

by Arno_1983＠gmx.de

> Hi, > > Is anyone interested in PCS Cadmus/QU68000 systems? We at Hack42 have no > idea what to do with them. We need to downsize and these take up a > significant amount of our space. > > See http://dev.ramdyne.nl/IMG_2750.JPG for photograph of the stack. > > If you know other people who are interested in beasts like these, please > pass this information on. > -- > Andreas Looks like interesting machinery from a German manufacturer! There is a short blurb about them on de:wp (https://de.wikipedia.org/wiki/Cadmus_Workstations) saying the PCS QU68000 were based on (who'd have guessed...) a 68000 processor on a QBus (!) while the later models sold under the CADMUS trademark held 68020/030 and, from 1985 on, MIPS RISC processors. They ran MUNIX, a V7 UNIX derivate, with some quite sophisticated cluster integration (network boot, "Newcastle connection" common superroot namespace, networked block devices) enabled by a board called the Intelligent Communications Controller. The outfit even still seems to stick around here (https://www.pcs.com/en/company/history/the-history-of-pcs/), albeit manufacturing access/time registration/industrial data terminals nowadays. As usual, if somebody from Germany conducts an operation on those and doesn't know where to put all of them, I'm willing to help out with collecting and re-homing. (I may also have an opportunity to collect a couple of them in the Netherlands if there are any left by/can be held onto until end of May 2016. I'd wish for one of each significantly different type but this is not a reservation but a "last resort" deal if they'd go to trash otherwise. Basically, if anyone else comes along offering a good home for them, I'm happy to stand back.) TIA, Arno

10 years, 4 months

6
6
0 0

Possible HP 250 available in Germany

by sieler＠allegro.com

Hi, There may be an HP 250 available in Germany. If interested, please email me directly, sieler at allegro.com thanks, Stan

10 years, 4 months

4
3
0 0

Kim 1

by uribecosta123＠gmail.com

I have a Kim 1 board. Please contact. Thanks.

10 years, 4 months

8
11
0 0

Old MOS Mask-Programmed ROM forgetfulness?

by rickb＠bensene.com

Hi, all, I have a question about old Mask-Programmed ROMs The part in question is the National Semiconductor MM5231. This part is a 2K-bit PMOS Mask-Programmed ROM, generally organized as 256x8, but also can be organized (via a MODE pin)as 512x4 bits. In this particular application, the parts are used as 256x8. I'm wondering if anyone knows if these particular ROMs (from the '72 timeframe) have a tendency for bit rot over the years? I know some of the early MOS ROMs had issues with metallization creep that would cause data loss/corruption. I have an old calculator that uses these ROMs as the micro and macrocode stores. The machine is catatonic, though the power supplies, master clock oscillator and divider circuitry, and the other obvious stuff are OK. I suspect it is probably stuck in some kind of microcode loop, just cycling around doing nothing. I have not yet put logic analyzer on the microcode latches yet, but that's probably my next experiment. Sadly, if one or more of these ROMs (there are 18 of them!) has failed, it likely means that the machine can't be restored to operation, as this is quite a rare machine, and there just aren't many of them left around. I have three different EPROM programmers, but sadly, none of them have the capability to read these parts. I was I had a Data I/O programmer, but alas, haven't come across one with all the Unipak modules I'd need at a price I can afford. Thanks, -Rick --- Rick Bensene The Old Calculator Museum http://oldcalculatormuseum.com

10 years, 4 months

7
12
0 0

DEC VT30-H info

by shadoooo＠gmail.com

Hello, I just acquired two DEC modules, M8295 and M7114. These appear to be a video system for unibus, named VT30-H. I don't find any info about these boards... There's some documentation around? Is the system complete or some other card is required? Thanks Andrea

10 years, 4 months

2
1
0 0

PCS Cadmus/QU68000 systems

by ed＠groenenberg.net

On Wed, February 17, 2016 06:59, Arno Kletzander wrote: >> Hi, >> >> Is anyone interested in PCS Cadmus/QU68000 systems? We at Hack42 have no >> idea what to do with them. We need to downsize and these take up a >> significant amount of our space. >> >> See http://dev.ramdyne.nl/IMG_2750.JPG for photograph of the stack. >> >> If you know other people who are interested in beasts like these, please >> pass this information on. >> -- >> Andreas > > Looks like interesting machinery from a German manufacturer! > > There is a short blurb about them on de:wp > (https://de.wikipedia.org/wiki/Cadmus_Workstations) saying the PCS QU68000 > were based on (who'd have guessed...) a 68000 processor on a QBus (!) > while the later models sold under the CADMUS trademark held 68020/030 and, > from 1985 on, MIPS RISC processors. They ran MUNIX, a V7 UNIX derivate, > with some quite sophisticated cluster integration (network boot, > "Newcastle connection" common superroot namespace, networked block > devices) enabled by a board called the Intelligent Communications > Controller. > The outfit even still seems to stick around here > (https://www.pcs.com/en/company/history/the-history-of-pcs/), albeit > manufacturing access/time registration/industrial data terminals nowadays. > > As usual, if somebody from Germany conducts an operation on those and > doesn't know where to put all of them, I'm willing to help out with > collecting and re-homing. (I may also have an opportunity to collect a > couple of them in the Netherlands if there are any left by/can be held > onto until end of May 2016. I'd wish for one of each significantly > different type but this is not a reservation but a "last resort" deal if > they'd go to trash otherwise. Basically, if anyone else comes along > offering a good home for them, I'm happy to stand back.) > > TIA, > > Arno > Yes, those were nice machines. I worked with these systems in '84 - '87 and did visit their premises in Munich a few times. It was a small office/factory building in the mids of a housing area. Ed -- Ik email, dus ik besta. BTC : 1J5fajt8ptyZ2V1YURj3YJZhe5j3fJVSHN LTC : LP2WuEmYPbpWUBqMFGJfdm7pdHEW7fKvDz

10 years, 4 months

1
0
0 0

PDP-11 COBOL-11 or COBOL-81? (was Re: Anyone have DIBOL-11, CTS-300, or CTS-500?)

by spacewar＠gmail.com

DIBOL-11 seems quite rare these days. Is COBOL-11 or COBOL-81 any easier to find?

10 years, 4 months

1
0
0 0

For sale PDP 11/45 + TU56 + more

by jasper.wijnands＠gmail.com

Hello, For sale rare PDP 11/45 mini computer Included: - TU56 Tape transport - Cardbuses - Original DEC Schematics Accepting offers. Please mail to jasper.wijnands at gmail.com. Located in The Netherlands. Kind regards, Jasper Wijnands pictures: [image: undefined] [image: undefined] [image: undefined] [image: undefined] [image: undefined] [image: undefined]

10 years, 4 months

4
3
0 0

Couple of Xerox 6085 questions

by tmfdmike＠gmail.com

1. Anyone who has played with Xerox systems will have encountered the dreaded 0937 code at boot time; it means "I have been configured for network operations. I abjure the world and will wait until hell freezes over before continuing the boot - unless I get the time from a network time server!" This is inconvenient and frustrating at times. Netware IPX/SPX is basically Xerox XNS implemented pretty much unchanged; does anyone happen to know if a Netware server can provide network time server functions - and in a way that a Xerox workstation would grok? 2. I haven't powered up my 6085s in a long time - at least 5 years; maybe 10 for some of them. The results have been most disappointing. They won't even *start* POST - and/or they give a rolling screen with no sync - and/or a blank screen - and/or they pass POST but won't boot with an 0151 error. I've tracked these down in most cases to flaky IOB boards. These boards hold the system PROMs. Anyone else seen similar issues? Could it be bit rot in the PROMs? Is that a known thing with 6085s? Thanks Mike

10 years, 4 months

3
2
0 0

Looking for printers: Epson Stylus Pro 9000, Epson 9500, Lexmark 7000 Z11

by sieler＠allegro.com

Hi, I'm looking for some old inkjet printers for a legal partner: Epson Stylus Pro 9000 Epson 9500 Lexmark 7000 Z11 They're from about 1998 or 1999. They probably have fixed nozzles across the page, no moving head. Assuming they're of the correct vintage / acceptable, a bounty will be paid. thanks! Stan Sieler sieler at allegro.com Cupertino, CA

10 years, 4 months

2
1
0 0

Apple Lisa 2/10 for sale

by ramdyne＠gmx.net

Hi, We at Hack42 have an Apple Lisa 2/10 for sale at http://www.ebay.nl/itm/121893065311. When we powered it up for the last time 18 months ago, it appeared to be working (no nasty smells etc) but we didn't test it very much. What has happened since is anybody's guess. Note: shipping to the US is *really* expensive, but within Europe is only slightly less painful (with packaging it'll reach 25kg easily). Pickup is an option. -- Andreas

10 years, 4 months

6
6
0 0

VAX/VMS media

by auringer＠tds.net

Hello all, I have a bunch of VAX/VMS media that need a new home. I must move them very soon and I have little time for shipping. Pickup from 53714 (Madison, Wi) preferred. 16MT9: VMS V5.3 BIN 1/2 & 2/2 in shipping box with docs VMS V5.3.1 BIN 8" floppy media: VAX/VMS 3.4 5 disks VAX/VMS 3.6 VAX/VMS 3.7 VAX/VMS 4.0 3 disks VAX/VMS V4.1 UPD BIN 4 disks VAX/VMS V4.2 BIN RX01 MANDATORY UPDATE VAX FORTRAN 3.4 VAX PASCAL 2.3 Microfiche: VAX/VMS 3.6 SRC LST VAX/VMS 4.2 SRC LST -Jon

10 years, 4 months

4
5
0 0

IBM (Sony) PowerDisplay 20

by stefan.skoglund＠agj.net

Howdy. I connected one of theese (i have two) to an PC last night. Blemishes: the text is blurry wrong color tones (a little bit red) so how much can i do with the display picture setting buttons ? I'm thinking about connecting one of them to a Sun 10 (but i do have a bunch of RS 6000 PPC machines.)

10 years, 4 months

1
1
0 0

Tool to convert between Motorola FFP and IEEE754 float formats?

by classiccmp＠philpem.me.uk

Hi, Does anyone know of a tool which can convert between Motorola's FFP (Fast Floating Point) float format and IEEE754? I'm trying to reverse-engineer some ancient 68k code which uses the FFP library, but a load of the floating point constants have been hard-coded as hex constants, which is making things hard to interpret... I've tried to convert the 68k assembler in FFPIEEE.SA to C, but I must have missed something because it just isn't working... Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

10 years, 4 months

3
3
0 0

Stuck bits on 11/73 Clearpoint 4MB memory - how to repair?

by jnc＠mercury.lcs.mit.edu

> From: Jacob Ritorto > I struggled for hours with inadequate eyesight, tools and materials, > but I think I got this mod done! That was quick! I had an 11/23 on my workbench that had had that backplane mod, so I took it apart to take a picture, to help you, but I guess that's OBE... :-) > the machine's stuck in self-test at error 47, Memory CSR error. It's not clear that that's really a hardware problem. DEC makes assumptions about how many memory CSRs there will be, etc, and some third-party board 'fail' when they don't meet those expectations. I have a Clearpoint QED1 (I think that's the one, didn't check) that does that. > What I assume is the parity light on the third party "Clearpoint QRAM-2 > SPB-1 88B" lights during self test. I've found no documentation for this > sucker as yet.. I have a PDF of the "User Information Manual" for the Clearpoint Q-RAM 88B. (Oh, I see, later message says you found it.) No prints, alas. Anyone have any we can scan and put online? > I'll have to find my rl02 controller and build the system up some more > so I can run xxdp and find out what exactly died. I would tend to use diagnostics as 'help', not my main tool in diagnosing faults. This is particular true as really bad issues can prevent the diagnostics from loading/running, so if you get skilled at fault analysis without depending on them, you're better situated to deal with the failures that prevent using them. > Can anyone offer hints as to how to identify which component is broken > and how to go about repairing this? As other have said, lacking the prints, pulling chips (if they are socketed) ought to enable you to work out which chips goes where. (I'v worked out the chip layout for a number of un-documented memory cards this way.) I don't know about your 88B, but the one I have photos of, and my other Clearpoint cards, the chips are in sockets. With luck yours will be too... If not, ask if someone has one with sockets (alas, I don't have an 88B), who can do the mapping for you. Important: once you have worked it out, pass it along! I'm trying to upload all the data I've collected about cards for which no documentation is available to the Computer History wiki. > It's the only memory board in this machine, so I guess the problem > might actually be a bus or processor board, right? Could be. I have an KDJ11-B which has stuck bits, and that's the CPU board, so yours could be to. > I have no other q-bus memory to test with, so can't do swapping / > process of elimination to be sure. It's definitely worth having another small QBUS memory card to use in fault isolation when debugging. M8044's are readily available on eBay for about $20. They are only Q18, so not usable in the same machine as Q22 memory, but they are useful for debugging. I would definitely invest in one. (If you luck out and get a bad one, send it to me, and I'll swap it for a known good, tested, one. I've fixed a whole bunch of them, got to the point where the last one I did for someone I didn't even have to pull out my 'scope! I could tell from the symptoms exactly which chip to replace! :-) > From: Jay Jaeger > Well clearly it is only affecting certain address bits - or the > diagnostic would not run at all Well, like I said, I do have a KDJ11-B which will run the on-board startup diagnostic, but which has a bit stuck hard on the QBUS interface! So those machines seem to be pretty resilient. Although as you point out, if he can load and run the diagnostic, it's probably not the CPU. > note that it is starting at 010000000, so that points to the memory Yup. If some locations work, and others don't, it's almost certainly the memory. And since he's only dealing with a single memory card, it's probably not the bus drivers/receivers on that card, either. One can use ODT on the KDJ11-B to poke around, and find the envelope of the problem. (See comments above about not relying on diagnostics! They are better for saying something's busted, than for accurately telling what _is_ broken.) With that, and a chip->memory map, it should be fairly easy to replace the offending chips. Noel

10 years, 4 months

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QSIC update

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > Have you guys thought about a panel that would connect to the KM11 > connector slots of real rk11/tc11 controllers? Umm, Guy sells KM11 clones? (I just bought a pair, they look really nice.) Or did you mean something else? Speaking of things Guy has, Dave is talking about adding a switch that would turn a QSIC+indicator panel into a QAV-11... :-) Noel

10 years, 4 months

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QSIC update

by jnc＠mercury.lcs.mit.edu

So here's a quick update on where Dave Bridgham and I are with the QSIC, since I think we have reached a significant milestone. We have the first of two wire-wrap prototype QBUS motherboards more or less (see below) done, and working to do slave cycles on the QBUS. (I.e. we implemented a simple register, and can write it, and read the contents back.) A test program to write all 2^16 possible values, and read them back and check them, ran several thousand complete passes with no errors. To get there, we (Dave, really - he bore the brunt of the work on this problem, and finally conquered it) had to tackle and fix some major noise issues: the way the prototype is done (a wirewrap QBUS mother-board with bus transceivers, level converters, etc, connected to an FPGA prototyping card with flat cables), we think we had cross-talk problems in the cables (since the connector pinout on the FPGA card, which we can't change, didn't alternate ground and signal lines). Anyway, it's working now; that means the hardware is 'mostly' working; most of the work from here on out will be FPGA, etc, programming. There _are_ a few additional QBUS lines used for bus master (DMA) and interrupts which we haven't used yet, and one of the first things done now is to get those two kind of bus cycles working; a) we have to get them done anyway, and b) that will verify that the QBUS interface hardware is full working. With that in hand, we can do the first controller (RK11), using memory in the FPGA to simulate a small disk. We'll then try and get to the larger RAM on the FPGA, to do full-size RAM disks. Next up after that is probably to hook up some SD cards (we already have produced the small PCB daughter-cards, which will mount on sockets on the wire-wrap mother-board, to hold the SD cards - we still need to add those sockets and wire them up, hence the comment that the wire-wrap mother-boards are "almost done"), at which point we'll have a fully-functional prototype. Dave has also produced prototype PCB's for the indicator panel, and one has been stuffed, and Dave's about to try and hook that up, and get it running; that will require yet a bit more work on the mother-board (install 3 sockets to hold the driver chips for the signal lines in the interface to the indicator panel). Blinkenlitz are a priority because, i) just because ;-), and ii) being able to display data from inside the FPGA will be a big debugging help. Anyway, we think getting slave cycles working was a major milestone (for a couple of software guys :-), And we think (_hope_ :-) that progress will now be pretty rapid, so hopefully more soon. Noel

10 years, 4 months

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Real tape drive densities [was RE: Oregon Pascal tape found]

by RichA＠LivingComputerMuseum.org

From: Christian Corti Sent: Wednesday, February 10, 2016 2:28 AM > On Tue, 9 Feb 2016, Pete Lancashire wrote: >> There are a few odd balls in 9-track as well, but the 556 was a typo. > Really? > I actually *do* have a 9 track tape drive (HP 7970) that has 200/556/800 > bpi densities: > http://computermuseum.informatik.uni-stuttgart.de/pics/hp1000/hp7970_2.jpg > And it is a *9* track tape, I know for sure. Actually, what you have is a *dual-density* tape drive, an HP7970E. It will write 9-track tapes at 800bpi, or 7-track tapes at 200, 556, or 800. See the manual for the 7970 drive family at http://bitsavers.informatik.uni-stuttgart.de/pdf/hp/tape/7970/07970-90885_7… Rich Rich Alderson Vintage Computing Sr. Systems Engineer Living Computer Museum 2245 1st Avenue S Seattle, WA 98134 mailto:RichA at LivingComputerMuseum.org http://www.LivingComputerMuseum.org/

10 years, 4 months

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Front Panels Update

by rodsmallwood52＠btinternet.com

Hi I had an email in from the screeners this morning. She is getting there. I suppose I should not expect automation speeds from a skilled hand process. Twenty boards not all the same with five passes per board, flush out time and drying time with the need for spot on registration aint gonna be that quick. More news as I get it Rod

10 years, 4 months

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Babes at Bell Labs

by jgessling＠yahoo.com

In honor of Valentine's day and all the great ladies that I've worked with over the years, ?I for one had a small part in a romance by setting up a VMS account for the geologist in our department after listening to his complaints about how useless computers were for years. ?Come to find out he wanted to email with one of my best programmers. ?Love ensued with marriage in a little while. ?Please enjoy. Big computers, big hair: the women of Bell Labs in the 1960s ? in pictures | ? | | ? | | ? | ? | ? | ? | ? | | Big computers, big hair: the women of Bell Labs in the 1...In 1967, Lawrence ?Larry? Luckham was an operations manager at Bell Labs in Oakland, California. He brought a camera into work to capture a day in the life? | | | | View on www.theguardian.com | Preview by Yahoo | | | | ? | Jim

10 years, 4 months

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IBM System z9 available near Ann Arbor, MI

by scaron＠umich.edu

Hi all, I was stopping by a local recycler to pick up a few Cisco switches I bought to add to my lab, and while I was there, I happened to spot a complete IBM System z9 machine out of the U-M Health System. http://www.ebay.com/itm/IBM-Type-2096-S07-System-z9-Enterprise-Server-TESTE… The fellow that I was speaking with indicated that they might accept a little bit less than the tagged price. Perhaps this is a bit on the new side for the list but I figured these don't come around too often and this might be a good place to find it a home... I know there are lots of IBM enthusiasts here. Best, Sean

10 years, 4 months

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pdp11/04 : the pics....

by jdr_use＠bluewin.ch

On ftp.dreesen.ch/PDP11 you can find some pics on how the rescued PDP11/04 fits right in next to its cousin, a PDP8/a This 8a, BTW, has more memory (128K x 12) and more oomph ( a FPP8A ) than the PDP11/04.... Jos

10 years, 4 months

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Stuck bits on 11/73 Clearpoint 4MB memory - how to repair?

by jacob.ritorto＠gmail.com

Hi, Seems I have bits 4 and 3 sticking on my Clearpoint QRAM-2-SAB-1 88b 4MB memory in my pdp11/73. Can anyone offer hints as to how to identify which component is broken and how to go about repairing this? It's the only memory board in this machine, so I guess the problem might actually be a bus or processor board, right? I have no other q-bus memory to test with, so can't do swapping / process of elimination to be sure. Here's the manual: http://www.arclightindustries.com/docs/Clearpoint-88B.pdf (which I probably should add to manx or archive.org or something). Here's a snippet of the VMJA diags run illustrating bits 4 and 3 sticking. During the next VMJA run, all addresses were showing up as errored instead of just the ones ending in xxx000xx, so I guess it's getting worse! @173000g Starting system BOOTING UP XXDP-XM EXTENDED MONITOR XXDP-XM EXTENDED MONITOR - XXDP V2.5 REVISION: F0 BOOTED FROM DL0 124KW OF MEMORY NON-UNIBUS SYSTEM RESTART ADDRESS: 152000 TYPE "H" FOR HELP ! .R VMJA?? VMJAB0.BIC CVMJAB0 ECC/PARITY MEMORY DIAGNOSTIC 11/83 CACHE AVAILABLE SWR = 000000 NEW = 000040 CSR MAP CSR 0 1 2 3 4 5 6 7 8 9 A B C D E F MEMTYPE P CSR NUMBER 0 CONTROLS TOO MANY BANKS 2044K OF Q-BUS PARITY MEMORY 2044K WORDS OF MEMORY TOTAL MEMORY CONFIGURATION MAP 16K WORD BANKS 1 2 3 4 5 6 7 012345670123456701234567012345670123456701234567012345670123 ERRORS MEMTYPE PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP CSR 000000000000000000000000000000000000000000000000000000000000 PROTECT PP 1 1 1 1 1 1 1 0 1 2 3 4 5 6 456701234567012345670123456701234567012345670123456701234567 ERRORS MEMTYPE PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP CSR 000000000000000000000000000000000000000000000000000000000000 PROTECT 1 7 01234567 ERRORS MEMTYPE PPPPPPPP CSR 00000000 PROTECT MEMORY DATA ERROR PC BANK VADD PADD GOOD BAD XOR CSR MTYP INT PAT 027606 10 060000 01000000 000010 000030 000020 0 P 27 027606 10 060002 01000002 000010 000030 000020 0 P 27 027606 10 060004 01000004 000010 000030 000020 0 P 27 027606 10 060006 01000006 000010 000030 000020 0 P 27 027606 10 060010 01000010 000010 000030 000020 0 P 27 027606 11 060000 01100000 000011 000031 000020 0 P 27 027606 11 060002 01100002 000011 000031 000020 0 P 27 027606 11 060004 01100004 000011 000031 000020 0 P 27 027606 11 060006 01100006 000011 000031 000020 0 P 27 027606 11 060010 01100010 000011 000031 000020 0 P 27 027606 12 060000 01200000 000012 000032 000020 0 P 27 027606 12 060002 01200002 000012 000032 000020 0 P 27 027606 12 060004 01200004 000012 000032 000020 0 P 27 027606 12 060006 01200006 000012 000032 000020 0 P 27 027606 12 060010 01200010 000012 000032 000020 0 P 27 027606 13 060000 01300000 000013 000033 000020 0 P 27 027606 13 060002 01300002 000013 000033 000020 0 P 27 027606 13 060004 01300004 000013 000033 000020 0 P 27 027606 13 060006 01300006 000013 000033 000020 0 P 27 027606 13 060010 01300010 000013 000033 000020 0 P 27 027606 14 060000 01400000 000014 000034 000020 0 P 27 027606 14 060002 01400002 000014 000034 000020 0 P 27 027606 14 060004 01400004 000014 000034 000020 0 P 27 027606 14 060006 01400006 000014 000034 000020 0 P 27 027606 14 060010 01400010 000014 000034 000020 0 P 27 027606 15 060000 01500000 000015 000035 000020 0 P 27 027606 15 060002 01500002 000015 000035 000020 0 P 27 027606 15 060004 01500004 000015 000035 000020 0 P 27 027606 15 060006 01500006 000015 000035 000020 0 P 27 027606 15 060010 01500010 000015 000035 000020 0 P 27 027606 16 060000 01600000 000016 000036 000020 0 P 27 027606 16 060002 01600002 000016 000036 000020 0 P 27 027606 16 060004 01600004 000016 000036 000020 0 P 27 027606 16 060006 01600006 000016 000036 000020 0 P 27 027606 16 060010 01600010 000016 000036 000020 0 P 27 027606 17 060000 01700000 000017 000037 000020 0 P 27 027606 17 060002 01700002 000017 000037 000020 0 P 27 027606 17 060004 01700004 000017 000037 000020 0 P 27 027606 17 060006 01700006 000017 000037 000020 0 P 27 027606 17 060010 01700010 000017 000037 000020 0 P 27 027606 20 060000 02000000 000020 000030 000010 0 P 27 027606 20 060002 02000002 000020 000030 000010 0 P 27 027606 20 060004 02000004 000020 000030 000010 0 P 27 027606 20 060006 02000006 000020 000030 000010 0 P 27 027606 20 060010 02000010 000020 000030 000010 0 P 27 027606 21 060000 02100000 000021 000031 000010 0 P 27 027606 21 060002 02100002 000021 000031 000010 0 P 27 027606 21 060004 02100004 000021 000031 000010 0 P 27 027606 21 060006 02100006 000021 000031 000010 0 P 27 027606 21 060010 02100010 000021 000031 000010 0 P 27 027606 22 060000 02200000 000022 000032 000010 0 P 27 027606 22 060002 02200002 000022 000032 000010 0 P 27 027606 22 060004 02200004 000022 000032 000010 0 P 27 027606 22 060006 02200006 000022 000032 000010 0 P 27 027606 22 060010 02200010 000022 000032 000010 0 P 27 027606 23 060000 02300000 000023 000033 000010 0 P 27 027606 23 060002 02300002 000023 000033 000010 0 P 27 027606 23 060004 02300004 000023 000033 000010 0 P 27 027606 23 060006 02300006 000023 000033 000010 0 P 27 027606 23 060010 02300010 000023 000033 000010 0 P 27 027606 24 060000 02400000 000024 000034 000010 0 P 27 027606 24 060002 02400002 000024 000034 000010 0 P 27 027606 24 060004 02400004 000024 000034 000010 0 P 27 027606 24 060006 02400006 000024 000034 000010 0 P 27 027606 24 060010 02400010 000024 000034 000010 0 P 27 027606 25 060000 02500000 000025 000035 000010 0 P 27 027606 25 060002 02500002 000025 000035 000010 0 P 27 027606 25 060004 02500004 000025 000035 000010 0 P 27 027606 25 060006 02500006 000025 000035 000010 0 P 27 027606 25 060010 02500010 000025 000035 000010 0 P 27 027606 26 060000 02600000 000026 000036 000010 0 P 27 027606 26 060002 02600002 000026 000036 000010 0 P 27 027606 26 060004 02600004 000026 000036 000010 0 P 27 027606 26 060006 02600006 000026 000036 000010 0 P 27 027606 26 060010 02600010 000026 000036 000010 0 P 27 027606 27 060000 02700000 000027 000037 000010 0 P 27 027606 27 060002 02700002 000027 000037 000010 0 P 27 027606 27 060004 02700004 000027 000037 000010 0 P 27 027606 27 060006 02700006 000027 000037 000010 0 P 27 027606 27 060010 02700010 000027 000037 000010 0 P 27 027606 30 060000 03000000 177747 177767 000020 0 P 27 027606 30 060002 03000002 177747 177767 000020 0 P 27 027606 30 060004 03000004 177747 177767 000020 0 P 27 027606 30 060006 03000006 177747 177767 000020 0 P 27 027606 30 060010 03000010 177747 177767 000020 0 P 27 027606 31 060000 03100000 177746 177766 000020 0 P 27 027606 31 060002 03100002 177746 177766 000020 0 P 27 027606 31 060004 03100004 177746 177766 000020 0 P 27 027606 31 060006 03100006 177746 177766 000020 0 P 27 027606 31 060010 03100010 177746 177766 000020 0 P 27 027606 32 06000

10 years, 4 months

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IBM 3290 terminal

by kevin.bowling＠kev009.com

I'm looking for an IBM 3290 to complement my z800 mainframe and third party 3174-22L establishment controller. I can't imagine these were particularly rare, but am sure many of them have been destroyed in the waning years since it takes special equipment/know how/desire to even use. Any leads on on for a reasonable price? Regards, Kevin

10 years, 4 months

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VAXen and minimal memory (was Re: The PDP11/04 has landed..)

by ethan.dicks＠gmail.com

On Mon, Feb 8, 2016 at 9:48 PM, Jon Elson <elson at pico-systems.com> wrote: > On 02/08/2016 03:23 PM, Ethan Dicks wrote: >> >> I don't know if you could use the 256K boards (populated with 4116s) in >> the 11/730 due to the tri-voltage 4116s, but even if they worked, you >> wouldn't want to - 5 of them just isn't that much RAM. > > We ran our first 11/780 with 2 memory boards. I THINK we had a total of 256 > KB, and one Friday afternoon one of them died and we had to run over the > weekend with only one board, so that would have been 128 KB. Yes, it was a > bit tight on memory, but we got a LOT done on that machine. As I mentioned our first 11/750 was delivered with 512KB (we upgraded it pretty quickly to 8 boards for 2MB, where it ran for years). The 11/750 first shipped with IIRC VMS 2.0. My first encounters with VMS was around mid-1984 and VMS 3.4. We had 8MB of memory in our second 11/750 but it was supporting 50+ users. That 11/750 went off-lease, we sent it back. That's why I had to upgrade the other one, so we'd still have an 8MB VAX in-house. It ran VMS 4.7 at the end of its days 23 years ago (we had quite a bit of software that wasn't available for/wasn't licensed for/wasn't under paid-maintenance for 5.x). I haven't powered it up since we left that building (I do occasionally power up the 8300 that we got for product development). So I'm fairly confident that 512MB is enough for VMS 2.0 but I _think_ by 3.0, you had to have a megabyte or two. 1.25MB would be the most you could stuff in a 11/730 if you could use the boards populated with 16Kbit DRAMs. I don't think VMS 2.x runs on an 11/730 (but I could be wrong there). We ran Ultrix 1.1 and VMS 5.0 on one of ours (with 5MB). VMS 5.0 barely fit - we mostly used that to link our product binaries under 5.x for distribution to our customers. I do know someone in Ohio who ran VMS 5.0 on a VAX-11/725, but they did it by cutting a slot in the skin and running a BC11 cable out to a BA11 box next to the 11/725 and stuffing a UDA50 in the BA11. With an external disk, there's no practical difference between an 11/725 and an 11/730... same CPU, same backplane, same memory... just a packaging difference. -ethan

10 years, 4 months

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Emulex QD32 Format Program

by jacob.ritorto＠gmail.com

Does anyone still have a copy of the "Emulex LSI/PDP MSCP Formatter Program (SXMX8B) ? My QD32 emerged from storage in a foul mood and is giving me errors I don't understand when I use the manual entry methods for inputting geometry and issuing a format. From what I can tell, it's complaining that its onboard RAM is bad. Comments / suggestions welcome. thx jake

10 years, 4 months

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Dumb terminals and many sessions (was Re: VAXen and minimal memory)

by ethan.dicks＠gmail.com

On Thu, Feb 11, 2016 at 12:11 PM, William Donzelli <wdonzelli at gmail.com> wrote: >> DEC VT100s >> were around $1,800 in the early-1980s, > > VT100s (and terminals in general) often were used as bargaining chips > to sweeten deals, so the price was quite "flexible". I have no doubts that was true when selling systems, but I remember seeing the paperwork from when we were growing, so 10 new employees meant 10 new terminals (and sometimes one more CS21)... Eventually, we stopped growing, then started shrinking, so it was feasible to log into two systems at once by having two terminals on your desk. We also had structured wiring from Nevada Western (DB25 modular adapters on each terminal, 6-pin silver satin cables to the wall, and several 3U "switchboard" panels with blocks of jacks and 25-pair telco cables back to the VAXen) so it was also easy to employ 2-line switch blocks at our desks. Eventually, we had "modern" terminals like the CiTOH 101e that supported a second session over the "serial printer" line (we never used the second line for hardcopy). Now, I use computers with bitmap screens to maintain multiple simultaneous character-based sessions. Same workflow, less wire and fewer large hunks of plastic and metal on my desk. -ethan

10 years, 4 months

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11/73 into 11/03 chassis?

by jnc＠mercury.lcs.mit.edu

> From: Jacob Ritorto > Would you happen to have notes or references about how to do it? It's not too hard; basically, one has to wire pins BC1, BD1, BE1 and BF1 (BDAL 18-BDAL21, respectively) on all _QBUS_ slots together into a bus. So wire BC1 on slot 1 to BC1 on slot 2, slot 3, etc, etc. A couple of notes: First, I said '_QBUS_' because if you have a Q/CD backplane, clearly one doesn't run the extra BDAL lines to the CD slots, only the QBUS slots (which run down the left-hand side, when facing the backplane). Second, for optimal analog behaviour, the 'out' slot on the backplane should be the last slot you wire to, so that there are no branches in the transmission line for BDAL18-BDAL21 (which can produce reflections - aka noise - on the transmission lines). How to do this efficiently (in terms of the wiring) can be a bit tricky, depending on the backplane configuration. E.g. if one has the standard 'serpentine' backplane, i.e. one with the slots in the following kind of order (facing the backplane from the board side): 1-2 4-3 5-6 8-7 9-10 etc., one might naively think one has to run the extra bus lines back and forth to match. However, only the _grant_ lines have to follow this pattern (and they are already there); the added lines don't have to follow the same pattern, as long as there are no branches. So, for the example 5-slot backplane above, one could/would wire: 1-4-5-8-9--2-3-6-7-10 i.e. a single vertical run on the left hand side, a single diagonal from 9 back to 2 (shown with "--"), and then another vertical run on the right hand side. Much simpler than wiring back and forth in slot order; there are no branches; and the last slot is the 'out' slot. For backplane with an _even_ number of layers, e.g.: 1-2 4-3 5-6 8-7 it's a little more complicated: a single vertical run on each side cannot be connected in such a way as to have the 'out' slot (8) be the last slot. One has to do something a little more complex: 1-4-5--2-3-6-7--8 with a vertical run on the left side, stopping short of the last slot; then a vertical run on the right side, then a lateral back across on the last layer. Obviously one _could_ run the wires back and forth, in slot order, but that will take a lot more wire, which at the very least is more work (especially on backplanes which don't have full wire-wrap pins, just the little stubby pins that have to have the wires soldered to); whether it also increases the delay down those transmission lines enough to be noticeable is something I don't know the answer to. All the obvious caveats apply: make sure not to get confused by the mirror pin and slot numbers on the front and back sides (you'll be wiring on the back, whereas the diagrams above are on the front), etc. Noel

10 years, 4 months

3
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Odd 11/23 (?) ROM carrier

by jnc＠mercury.lcs.mit.edu

Anyone know what this: http://www.ebay.com/itm/251526917058 is? It has five chips, not six, so it's not the KEF11-BB CIS option. I've tried Web searches on "57-27889-01", but not turned up anything useful. Noel

10 years, 4 months

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[long shot] Looking for a Sequent Symmetry...

by ian.finder＠gmail.com

Preferably one of the deskside SMP models. Proving a point about under what circumstances X86 machines can be considered cool... :^) Located in Seattle. -- Ian Finder (206) 395-MIPS ian.finder at gmail.com

10 years, 4 months

2
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Good memory board for Heath H-11?

by jhfinedp3k＠compsys.to

>Richard Cini wrote: >Jerome -- good point about the IOPAGE. Maybe I'll get an 8kw and 16kw board -- that gives me 28kw with the included 4kw. I have no specific software so I don't need to tinker with reducing IOPAGE. > >Rich > >>>On Feb 9, 2016, at 10:47 PM, Jerome H. Fine <jhfinedp3k at compsys.to> wrote: >> >>>Thanks guys. This is really helpful. I was getting confused between the M8044 and M7944 boards. Max memory for the LSI-11 is 32kw, right? >>> >>> >>Correct, the maximum memory on a board is 32kw. >> >>For an LSI-11 (aka PDP-11/03) without any MMU hardware, >>the actual maximum memory that can be accessed must also allow >>for the IOPAGE registers. Usually, the IOPAGE address range >>is 4 kw which leaves 28kw for everything else, including RT-11 >>(assuming that is what you are running). There is one option >>available with some hardware to reduce the address range >>set aside for the IOPAGE to just 2kw which then leaves >>30kw for everything else. Unless you are running a specific >>program which requires the extra 2kw, it is probably not >>worth the extra effort. >> I hope that my version of arithmetic is for 8kw + 16kw = 24kw, so somewhere I don't understand where the other 4kw comes from. Then, since you are missing only 4kw out of the maximum of 28kw (which is the normal maximum), you will not likely have a problem unless you have really memory rich programs. RT-11 runs fairly well in just 16kw (or 32 KB), so it should not be a problem. For my own work in which I need to run MACRO.SAV as fast as possible, I run the program in 64 KB of extended memory under a Mapped Monitor - which a PDP-11/03 (or an LSI-11) can't do since there is no MMU chip. Of course, my actual CPU is a Pentium III which I use to run Ersatz-11 so that RT-11 is running 15 times as fast as a PDP-11/93. And the disk I/O is also a bit faster. I can copy a 32 MB RT-11 partition to a second 32 MB RT-11 partition in under 2 seconds. Even with two ESDI hard drives on a PDP-11/93, that takes over 4 minutes. Jerome Fine

10 years, 4 months

2
1
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Good memory board for Heath H-11?

by COURYHOUSE＠aol.com

I have not opened up ours yet but I always assumed they were all DEC boards. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/9/2016 7:36:05 P.M. US Mountain Standard Time, glen.slick at gmail.com writes: On Tue, Feb 9, 2016 at 6:08 PM, Richard Cini <rich.cini at verizon.net> wrote: > All ? > > I picked-up a Heath H-11 machine the other day and it has a single 4kw memory board. From my prior experiences with DEC (an 11/34a many years ago; now at the RI Computer Museum), I know my way around the field guide?but I? m having trouble trying to identify the correct module number suitable for the LSI-11 CPU. Even though it?s a Heath machine, I assume it?s module compatible with DEC. Any help would be appreciated. Thanks! > > Rich Maybe an M8044 MSV11-D (no parity) or M8045 MSV11-E (parity) would be most appropriate. They came in 4KW, 8KW, 16KW, and 32KW flavors. http://manx.classiccmp.org/collections/antonio/dec/msv1dop1.pdf Fairly common on eBay.

10 years, 4 months

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AIX for IBM PS/2

by ball.of.john＠gmail.com

>Good luck in finding media for AIX PS/2. As far as I know, it was never released on >CDROM and the last version I had was ~53 3.5? floppies (long gone now unfortunately) >and *only* worked on specific PS/2 hardware (no BIOS ? all drivers went straight >to the ?metal?). > >TTFN - Guy Nope, AIX 1.3 is readily available. It's over on http://ps-2.kev009.com if you know where to look along with a rather massive amount of documentation and (VERY HANDY) installation instructions. I can confirm that it will work on a stock IBM 8580 and you can get several different flavours of window system if you wanna roll that way. I put a video on Youtube a few years ago of a running machine when it was still rather badly configured. I briefly had it working on the model 55SX as well but because I was not labling the disks as I wrote them I went out-of-sequence somewhere and frustratingly couldn't find Disk 15. -John

10 years, 4 months

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