test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

> From: Paul Birkel > Unfortunately there's not much documentation for the MS11. ??? We're actually pretty well off, there; we have: - MS11 Maintenance Manual (DEC-11-HMSAA-D-D) - MS11 MOS Memory Troubleshooting Guide (DEC-11-HMSTS-A-D) - MS11-B Engineering Drawings About all we're missing are the MS11-A/C data board engineering drawings. (The control board is in the MS11-B prints.) > From: Mattis Lind > This could mean that 16 bit data is in the L chips while the faster > chips are used for a 10 bit cache tag. Sounds plausible. > And of course those two I/O connectors don't belong on a cache. > ... > Those IO connectors are connected to two double height boards in 26 /27 > AB. They are also made by ACT and contain a few TTL chips. If the board is a cache, how does it get filled? It would have to listen to the UNIBUS the memory is on. So I'm guessing that's that those connectors and boards are for. Note that there has to be a signal from FastBus (anyone know the correct capitalization for that?) which tells the CPU if the MS11 has a given address or not (given the way the MS11 can be configured as to size and address), so the cache board could use that line to tell the CPU whether or not the location in question is in the cache. Noel

8 years, 1 month

Landfill?

by cisin＠xenosoft.com

Is there ANY interest in Courier 56K V.92 modems? Laserjet IIP printers? Parallel port and/or SCSI flatbed scanners? (home office, NOT professional) Oversized PC cases with MANY drive bays? Generic 386? PCs? Is it worth even hauling that kinda stuff to VCF?

8 years, 1 month

And if you collect hp. which... we do of course at SMECC so need to hear if you qall have any of this.

by couryhouse＠aol.com

And? if? ?you? collect hp.? which...? ?we? do? of? course at? SMECC? so need to hear? if? you? all have any of? this. ? The scanjet? ?BW? is? ?first? HP...? and? ?scanject 2c? is? first? color scanner? hp always? accepting? gifts? of these? 2. ? IN? hp lasers? ? 2686a? ?first HP laser...? ? ? then there is a? first? color? laser? HP? too ( if? you can lift it.) ? Would also suggest saving and? we need a? clean one? ?hp? 500? which? was a? 2886a? with a? bunch of? bins? was? damn? expensive? ?so not a lot? of them around compared to? 2886a ? Office jet.... hp? officejet ( no suffex? ? had? deskjet? ?printer? in? it.? ? was? first as I? remember ? HP? Paint jet? ?first? color....? we need one...? uses? tracer feed? paper.? just? found? my old? sales? binder? for it? with all the? samples etc? as? issued? by hp ? ? NEED? HP 3000? cx? series? II? series III? Model? 30? model? 40? etc etc etc ? ? ? Looking for? ? HP? VECTRA? Has bizzare? moue? interface etc... ? HP? 150 -? WORKING? OF? NOT? PLUS - -Looking? ?for? any AND? ALL hp? 150? PARTS? PIECES SALES? LIT? ? POSTERS? WITH MONARCH BUTTERFLY? ETC... ? Looking? ?for? ?some? HP? calc? stuff Looking? for? HP? 110? portable? and portable? plus? ?also? NEED VECTRA? CS PORTABLE (Bless its? wretched? soul!) ? ? I? guess if? it? ?says? HP? would? like to? hear? about it. ? ? HEY LOOKING? FOR? ANY? ?ADVERTISING? ITEMS? FROM? COMPUTER EXCHANGE? PHX? TOO! ? Ed Sharpe Archivist? for SMECC ( Retired? CEO? Computer Exchange? ?Phx? ?AZ)

8 years, 1 month

Got a kidney!

by dseagrav＠lunar-tokyo.net

Got the call yesterday. Transplant operation was a success. Still at the hospital recovering. Will update when able.

8 years, 1 month

SDL and SunOS

by dave＠661.org

How feasable is it to compile and run SDL for SunOS? My main reason for doing this is to play Z-machine games on Sparcstations using Frotz (https://gitlab.com/DavidGriffith/frotz) using the SDL interface to play V6 games. -- David Griffith dave at 661.org 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?

8 years, 1 month

MVME188 backplane jumpers

by bear＠typewritten.org

Does somebody know how to set the IACK and BG backplane jumpers for the MVME188 CPU? Remove them all? Leave them in behind the memory and/or cpu board(s)? Something else? All the documentation I can find are for the normal VME SBCs, which the 188 isn't. Thanks! ok bear. -- until further notice

8 years, 1 month

Strange third party board in PDP-11/45

by syseng＠gfsys.co.uk

> Message: 1 > Date: Sun, 22 Jul 2018 09:22:25 -0400 (EDT) > From: jnc at mercury.lcs.mit.edu (Noel Chiappa) > To: cctalk at classiccmp.org > Cc: jnc at mercury.lcs.mit.edu > Subject: Re: Strange third party board in PDP-11/45 > Message-ID: <20180722132225.49A0B18C096 at mercury.lcs.mit.edu> > > > From: Paul Birkel > > > ABLE Computer Technology. Their first product was PN 10001 ... the > > A.C.T. Univerter > > This board is not shown in any of the Able brochures we have: > > http://bitsavers.trailing-edge.com/pdf/able/brochures/ > > However, Able info is _very_ thin on the ground, now... > > Noel There was a Univerter and Qniverter (sp) which were used to translate from unibus to qbus.Very useful boards and used one to translate from vax730, vms 4.3 to a qbus expansion box, so I could use an RQDX3 and RD53 as vms boot. Just set up the dipswitches and it works automagically at power on. May have docs somewhere, but not sure where... Chris

8 years, 1 month

Looking for Tektronix 4052 R12 Graphics Enhancement ROM Pack and Tektronix 4014 demo files

by mmcgraw74＠gmail.com

I have been recovering dozens of old Tektronix 4050 series tapes and found one with Fast Graphics software for the 4051. This software program jumped into 6800 assembly code and retrieved three bytes per vector from a tape file. Apparently this tape is a duplicate - and it appears that all the files bigger than 1KB have corrupt data. Apparently from the 4014 programmers guide - they had a set of demo picture files including a list with R2-D2. I have found Jos Dreesen's ftp tar file with some 4014 pictures - but I'm looking for an R2-D2 picture file that is on the tape I have but corrupt. I also discovered that Tektronix made a 4052/4054 R12 Graphics Enhancement ROM pack which included the Fast Graphics program in ROM. I would love to find one of those ROM packs - hint/hint :) I did recover one of the shorter picture files of Snoopy - but since I don't have a 4051, I can't run the Fast Graphics program on my 4052 or 4054. One of my buddies threw a C program together to convert the data file into Tek 4050 PRINT statements. I've posted the SNOOPY basic program and screenshots of running it on vcfed in a new thread: http://www.vcfed.org/forum/showthread.php?64726-Tektronix-4051-4052-4052A-4… I'm also still looking for a 4051/4052 Display Board. Mike Haas posted pictures here in Oct 2016 of lots of Tektronix boards including a Display Board - but I don't have any direct contact info for him. Monty

8 years, 1 month

68k development, Avocet Development

by harper＠secureoutcomesinc.com

Greetings to the List - Carlo, I have been using IDE68K out of Norway for about five years and it is excellent: http://home.kpn.nl/pj.fondse/ide68k/ It includes the 68020 instructions such as bit instructions etc - also floating point. I only use the assembler and download S-records to the MVME177-005 boards that I use. I have never found any bugs etc. Best, Jack At 12:46 PM 7/20/2018, Carlo Pisani via cctalk wrote: >hi >does anyone happen to use Avocet Development Tools for m68k? >how good/bad is it? ---------------------------------------------------------------------------------- Jack Harper, President Secure Outcomes Inc 2942 Evergreen Parkway, Suite 300 Evergreen, Colorado 80439 USA 303.670.8375 303.670.3750 (fax) http://www.secureoutcomes.net for Product Info.

8 years, 1 month

how good is the data reliability with CD ROM and DVD RAM?

by dmonnens＠gmail.com

> > I have a lot of backup here stored in CDs, and I have recently bought > an SCSI DVDRAM unit to create new backups in caddies DVD-RAMs (of > 4.2Gbyte each) what is your experience? I recently disposed of a couple hundred DVD and CD backups I'd made. As mentioned in a previous comment, it's simply too impractical to store terabytes of information in 4.7GB segments, plus they take up a LOT of space. HDDs aren't the most reliable, but this is what I use now for that reason. I make sure to keep the previous backup in case something happens. I'll only use optical backups now with the most important data. Backblaze has some interesting stats regarding HDD reliability (they are a data center using thousands of drives running constantly): https://www.backblaze.com/blog/hard-drive-stats-for-q1-2018/ As noted previously, beyond storage conditions, disc longevity depends on the types of dyes used in the discs. Gold is supposed to be best. Early on, they experimented with a wide variety of dye types, and the silver dyes were least reliable, oxidizing in only about 10 years. The thing is, no media format is going to last forever. The only really reliable way of keeping data around is multiple backups and data migration. Basically, for your really important stuff, you'll want a couple of backups, stored in different geographical locations (one local, one on cloud works, too). You'll want to periodically refresh the backups by migrating the data onto fresh media. In the preservation business, the ideal is to refresh after the cost of storage media is 1/2 of the initial investment. So, if you paid $1 a GB for the initial storage media, you'll want to migrate once the new format is $0.50 a GB, and then again when it is $0.25 and so on. This way, the total cost is double what you initially invested. Of course, while the cost per GB might drop steadily, the total amount on a particular media format will increase as well, such that the $150 HDD you bought 5 years ago will have twice the storage for...$150. Definitely open to other suggestions.

8 years, 1 month

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