test-drb October 2002

test-drb@ccmp.vtda.org

261 participants
654 discussions

by dittman＠dittman.net

> In all that is the collective geek-dome of classic computers, I find it > boggling to see that no one has (or wishes to share... you greedy SOB ;-) > the technical manual and/or jumper settings for the elusive DEC KZQSA Qbus > to SCSI adapter boards.... come on, I challenge the collective knowledge > base of the DEC geeks to come up with this mysterious and treasured > knowledge and share it with the list. The winner gets a free 6 pak of > JOLT soda for those looooonnnnngggggggg caffeine induced late nights ;-) Courtesy of Google (first entry I found): There are three sets of jumpers on the KZQSA: 1) W1 to W7 select the CSR address; the interrupt vector is programmable, so there are no jumpers to set it. Since it sounds like your setup is fairly simple, I'll guess that your CSR is at or near the default address and list a few corresponding jumper settings ... if the CSR that CONFIGURE gives you is not below, you might want to post it, so that one us can verify the correct jumper settings, just to be on the safe side. CSR W7 W6 W5 W4 W3 W2 W1 ------ -- -- -- -- -- -- -- 761300 0 0 0 1 0 1 1 (default) 761400 0 0 0 1 1 0 0 761500 0 0 0 1 1 0 1 But generally, you can work out the jumper settings as follows: if W7 is 0 (not set), the CSR is 76xy00, but it it is set (1), the CSR is 77xy00; the octal digit "x" is determined by the settings of W6 to W4, and the digit "y" is determined by W3 to W1 as illustrated by a few examples: 760100 0 0 0 0 0 0 1 760400 0 0 0 0 1 0 0 761000 0 0 0 1 0 0 0 764000 0 1 0 0 0 0 0 770000 1 0 0 0 0 0 0 2) W9 to W13 determine the memory base address; the default is the address range 01000000-01377777 for the 128 KB memory on the KZQSA, for which only W10 is set and the others are not. You need to arrange for all modules that use Qbus memory space to have unique address ranges ... but this is normally not such a problem, since not so many modules use Qbus memory space. To see if it is a problem in your configuration, issue a SHOW QBUS command from the console prompt (>>>); at the end of the output (after the scan of IO space), you will find the Scan of Qbus Memory Space, which shows which address ranges are in use. If 01000000-01377777 does not overlap any range currently in use (if any), you have no problem and can just use the default jumper setting here. Otherwise, the address selection jumpers just increase the base address of the KZQSA's 128 KB memory in steps of 128 KB; i.e., address range W13 W12 W11 W10 W9 ----------------- --- --- --- --- --- 00000000-00377777 0 0 0 0 0 00400000-00777777 0 0 0 0 1 01000000-01377777 0 0 0 1 0 (default) 01400000-01777777 0 0 0 1 1 ... 17400000-17777777 1 1 1 1 1 Also note that W8 is in the same jumper block as W9-W13; I have no idea what it does, probably best to leave it alone... 3) W14 to W16 set the SCSI ID of the KZQSA; W14 sets the MSB (4) and W16 the LSB (1). The default is 7, which should be OK for most purposes. -- Eric Dittman dittman(a)dittman.net Check out the DEC Enthusiasts Club at http://www.dittman.net/

23 years, 1 month

Anyone need 486 motherboards?

by cb＠mythtech.net

Does anyone want some 486 motherboards? I'm not sure who makes them (made in Tiawan, SiS chipset). They have the CPU (486 DX/2 50Mhz); 6 ISA slots, 2- 72pin SIMM slots and 8- 30 pin slots, AMI bios, AT keyboard, SiS chipset. And I'll throw in the VGA card and I/O cards that are currently installed with them (I/O card has FDD, IDE, LPT, 2- Com). Both are ISA cards, but have a 2nd connector that looks a bit like AGP and hangs off the back end of the ISA slots (3 of the 6 slots have this addition connector, so these two cards fit into 2 of those). CMOS batteries are soldered on, and corroded, but were working and holding power as of not too long ago (these machines were last used a month or so ago). If anyone wants them (there are 4), let me know before I pull all the jumpers off and toss the motherboards. Or if anyone just wants 486 CPUs, let me know. I have the 4 listed above with the boards, and another 3 or 4 pulled from other boards (not sure on the specs for them, if there is interest, I'll check). -chris <http://www.mythtech.net>

23 years, 1 month

The 5155 Challenge...

by SecretaryBird＠SoftHome.net

could fit in there. > > Here is a picture of the (almost) final results... > Naturally, I forgot to post the link to the picture... http://www.oz.net/~otter/geekworks/Crysta-00.JPG -- Scarletdown

23 years, 1 month

Bringing up a 10 years dormant VAX 11/750

by Antonio.Carlini＠riverstonenet.com

>I just a couple of days ago picked up a VAX 11/750. This machine has >been stored in a damp shed for ten years or so, has had mice living in it, Sounds like you are in for a bunch of fun ! If the mice chewed through the docs you can find a set of prints and a few manuals at: http://208.190.133.201/decimages/moremanuals.htm I don't think the Installation and Acceptance manual covers infestation in great depth though :-) Antonio

23 years, 1 month

[maybe OT]: Removing pesky floppy disk labels

by philpem＠dsl.pipex.com

Hi all, OK, so here I am sitting at my computer with a stack of 100 or so disks to reformat. Unfortunately most of said disks have been labelled using felt-tip pen. And the labels are the nasty kind that don't come off without a fight. Sooo... Has anyone got a method that will get these stupid things off without leaving a gummy, sticky residue or damaging my disks? I've tried WD40 (didn't work at all), 3-in-1 oil (don't ask), an upside down airblaster (freeze spray for half the price) and a few other things and nothing works! Anyone want to share their secret? Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/

23 years, 1 month

Removing glued on heatsink (was: Anyone need 486 motherboards?)

by cb＠mythtech.net

Ok, anyone know of a safe way of removing a glued on heatsink? I have a few of these 486 CPUs where the heatsink is glued down. I could just jam a screwdriver in and snap it off, but that just doesn't seem very good for the chip. -chris <http://www.mythtech.net>

23 years, 1 month

Wanted: KZQSA Adapter - Never mind

by Fred.van.Kempen＠microwalt.nl

> Hmmmm, unobtainium huh??? Thats similar to Kryptonite I think ;-) No.. Kryptonite is sugar compared to Un. If you ever find someone you suspect of having, they'll fiercefully deny that... and then smile... --f

23 years, 1 month

Bringing up a 10 years dormant VAX 11/750

by healyzh＠aracnet.com

> I just a couple of days ago picked up a VAX 11/750. This machine has Cool! > been stored > in a damp shed for ten years or so, has had mice living in it, and the > usual assortment of spiders, etc. Oh, SHUDDER! It sounds like you're in for an interesting restoration process. > to the control panel and TU58 tape drive. I'm in the process of cleaning > all the components, > but am in search of some advice on this process, especially the power > supply. How long > should I let the power supply dry out from its prior damp condition, and > what should > I do to bring it up for testing without risking damage to other > components? I wish to > do this methodically and carefully. Unless this is a powersupply that needs a load on it when you power it on (anyone know?), I'd recommend having it totally disconnected when you power it on. I'd also recommend you have someone else standing by with a C02 Fire Extinguisher for safety. As for how long it needs to dry before powering up, I'm not really sure, if you've got it in a warm, heated location, I'd say a week or two should be plenty (probably doesn't need that much but it's better to ere on the side of caution). Something to do in the mean time is to look for corrosion and to get everything good and clean. I'm most concerned about your powersupply and backplane. Also take a look at the rollers in your TU58. While the following is for a PDP-8, you might find it useful. http://pdp-8.org/revive.htm Definitly read up on what Aaron has to say about Backplanes. Zane

23 years, 1 month

(no subject)

by f.heite＠hccnet.nl

> gil smith asked: > I am curious what your favorite cp/m system might be. My first 8bit CP/M machine was made by putting a Microsoft Softcard into my Apple ][ Plus, early 1981. After sitting there for a few years, the Softcard was moved to a new Apple //f. That's an Apple //e, where I had the Rom software patched by my dealer, to prevent the hard reset routine from overwriting a few bytes in every xx KB's. And, of course, the startup text on the top line of the screen changed to Apple //f to make it my "personal" machine. The //f machine was upgraded with serial and parallel cards, a clock/interrupt card, extra RAM, and finally a SASI interface card, connected to a 10 MB Xebec harddisk. For that SASI harddisk, as sold by my dealer, I wrote the boot prom, patches and drivers for Microsoft CP/M 2.2, ALS CP/M Plus, Apple DOS, Apple Pascal and finally Prodos. In the end, it was a system that could run not only two flavors of CP/M, but also all other OS's that were available for the Apple - all with megabytes of harddisk space. CP/M Plus was my favorite OS as it was the fastest one, mainly due to the large numbers of disk buffers that were possible in CP/M Plus. Sometimes I feel sorry that I sold all this for about fifty dollars... Freek.

23 years, 1 month

For Sale: Diamond D5 Wordprocessor

by julesrichardsonuk＠yahoo.co.uk

Hi, > > curious. Mine's definitely a Diablo unit and plugs into its own > > card within the > > Yes, a Diablo Hitype II. ha ha - just me being stoopid :) > > cardcage in the system unit. But there's also a seperate card > > in there (oddly, > > How many wires in the cable between the printer and this card? right, just taken another look... yes, it is 50 pins - but not connected to anything; the printer connects via a serial cable to a seperate SIO board (which seems capable of supporting 2 devices). A post-sale upgrade I assume, but they left the original Diablo board in the machine too. The SIO board has DIP-switches on it whereas configuration on the other cards seems to be solder-contact only. do you remember if your unit shows anything on the display prior to putting the system disc in? Be useful if it did in terms of tracing the fault with this machine. there's more cards in the cardcage than I originally remembered: disc #4 drive (x 2) disc #4 read/write disc #4 control 64K ram SIO interface 3 mode VDU output 3 mode VDU counter VDU memory CPU #9 Z80 RTC keyboard interface diablo interface The 3 VDU boards are coupled on the outer edge as well as on the backplane. Backplane connections are via 88 contacts, with the component-side of the cards being purely ground. Not sure if the layout was to any recognised design; probably proprietary though. cheers, Jules 88 __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 1 month

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test-drb October 2002