test-drb January 2004

test-drb@ccmp.vtda.org

290 participants
643 discussions

by doc＠mdrconsult.com

Nowhere near 10 years old, but ClassicCmp is the place most likely to know.... A surplus barn here is getting a huge lot of factory refurb Hakko 939 solder stations. He says he'll be getting $150 for them, with a 90-day warranty from Hakko. He has one as a sample from his supplier, and it looks NIB. That unit is much more sophisticated than I really need. I convert serial & graphics cables for my toys, touch up the odd dry joint or scratched-out trace, chase fire ants, and hack potentially lethal PSUs into my print servers. (Yeah, I had to go there) However, even a decent used setup that'll behave nicely for what I do is going to run me $100, so I'd rather splurge a little than inherit somebody else's scorch marks. Back to the point, has anyone on-list used Hakko gear? Like it, or not? Or does anybody have a recommendation for a better deal in the $100-150 range? Doc

22 years

Something different: Hewlett Packard 9868A I/O Expander W/ Interfa

by rigdonj＠cfl.rr.com

Hewlett Packard 9868A I/O Expander W/ Interface I've never seen one of these before but if I'm not mistaken it's for the old HP 9820 and 9830 (and similar) calculators. <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2590646697&category=1504> Joe

22 years

LAST CHANCE (stuff going to dumpster tonight if unclaimed)

by cb＠mythtech.net

>> Misc PC cards: >> 16 bit ISA multi I/O card (2 serial, 1 parallel, 1 joystick, floppy, and >> ide) > >These are starting to disappear believe it or not. Yeah because people like me chuck box loads of them when we can no longer store them, and can't find anyone to take them. -chris <http://www.mythtech.net>

22 years

Toy Computer K-30 and IMSAI 8080 go high on eBay

by jrkeys＠concentric.net

Check out the Brainiac K-30 for almost $200 I got one last year on eBay for under $25 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2781740056 Check out the IMSAI http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2780544749

22 years

Voltage & Current..

by dwight.elvey＠amd.com

Hi Ordinary glass glows a little redish yellow in a dark room, when melted. Quartz glass if definitely white hot, when melted. I don't think they are using quartz glass for neon signs, though. Dwight >From: "Teo Zenios" <teoz(a)neo.rr.com> > > >----- Original Message ----- >From: "Joe R." <rigdonj(a)cfl.rr.com> >To: "General Discussion: On-Topic and Off-Topic Posts" ><cctalk(a)classiccmp.org> >Sent: Thursday, January 29, 2004 4:18 PM >Subject: RE: Voltage & Current.. > > >> At 12:02 PM 1/29/04 -0800, you wrote: >> >> > I think perhaps it's best for Lyos to maintain his present beliefs >about >> >> > voltage and current. Over time I'm sure he'll collect more empirical >> >> > data to either confirm or deny his hypothesis (though quite likely at >> >> > some cost if he's as stubborn in his beliefs as I suspect the case to >> >> > be). >> >On Thu, 29 Jan 2004, Gordon JC Pearce wrote: >> >> In other words, blows himself up with a 3kV-to-240v electricity pole >> >> transformer? >> > >> >Would that damage the transformer? (how many amps are those?) >> >> I believe that they're AT LEAST 1 Amp ON THE 3kV SIDE! The neon sign >> manufacturer's use them to step the 240 back up to 2 or 3 kV at 1 Amp to >> burn the gasses out of the glass walls of tubes that they use to make neon >> signs with. They run them at ~1 Amp for 24 hours and the tubes are almost >> white hot. >> >> Joe >> >Funny, All the glass/quarts tubes I have seen don't glow any color even when >melting. > > > >

22 years

Non-DEC DEC Field Guide?

by aek＠spies.com

all of the cards you have posted are Unibus, not Qbus the remex card is a reader/punch interface the DR11C is a 16 bit parallel i/o card L-10-B-2 appears to be a copy of a DEC M7800 serial line intf the CDS is some sort of disc interface and the DSD board is a unibus interface for a DSD440 floppy

22 years

LAST CHANCE (stuff going to dumpster tonight if unclaimed)

by jwest＠classiccmp.org

Narrow Carriage Dot Matrix printers (all believed working, good shape): Star NX-2430 Multifont TI Omni 800 855 w/font cartridge Star NX-1001 Multifont Epson LX-850 Honeywell Bull Miniature inkjet - about 2 inches tall, 8 inches wide, 5 inches deep. Centronics parallel IF, Cute! Viva Modem 24 (little tower, no PS) Dell Monitor, 14", model Vi1439U Packard Bell Monitor, model PB8538SVGA Complete Epson Equity I+ system, monitor, keyboard, system unit. All epson brand original set. Haven't opened it up but I suspect it's an 8080 or such, 360K floppy. Cute stylish setup. Misc PC cards: 16 bit ISA multi I/O card (2 serial, 1 parallel, 1 joystick, floppy, and ide) 16 bit ISA linksys etherlan16 network card 16 bit ISA VGA (JAX TVGA8900) 8 bit ISA Sound Magic (several creative labs chips) Last but not least... can't believe I'm going to let this one go, but it needs a better home. I have a Corona Data Systems PPC400-12. Jay West

22 years

Need RT-11 on RX02

by dwight.elvey＠amd.com

>From: "Dave Mitton" <dave(a)mitton.com> > >Folks, > I need some help. > >I'm trying to bring up my LSI-11 system (KDA11, BA11-VA Cabinet, RX02, >VT100), and due to a basement flood a few years ago, all of my RX02 media >has been water damaged. This was my last 8" floppy system. > >The diskettes are sticking to the jacket, and some bits of the lining are >sticking to the oxide, (or vice versa) anyways I cannot get anything to >boot. I've tried cleaning a few of the media with isopropyl alcohol, but >no success yet. Hi I assume you've removed them from the covers and run them bare. Also try cleaning the pulley surfaces on the drives. Even tiny grunk here will cause read errors. The belts tend to degrade and make blobs on the pulleys. Clean heads between each experiment. I had this same problem with a number of "high quality" floppies. It seems that the adhesive used for the liners would seep through the liners onto the disk. Someone mentioned using goof-off but I've never tried such and don't recommend it without some testing first. I cleaned with isoproponal(sp?). Dwight

22 years

Ultrix on an 11/730?

by msokolov＠ivan.Harhan.ORG

Brad Parker <brad(a)heeltoe.com> wrote: > Can anyone tell me if there is a version of Ultrix which will boot on an > 11/730? AFAIK DEC never dropped 730 support from Ultrix so I see no reason why would any given version, e.g., V4.00 which I have on my FTP site, NOT boot on a 730. > And if so, can I grab media files off the net somewhere? I've got the full V4.00 distribution on my FTP site: ifctfvax.Harhan.ORG:/pub/UNIX/thirdparty/Ultrix-32/ult400vaxdist-tk50/ This dist came into my hands in TK50 format, hence the directory name on the FTP site, but I see no reason why you can't write it to magtape as well. (6250 BPI would be easier, for 1600 BPI you may have to split it into multiple tapes and I am not sure how to tweak the metadata for the Ultrix installer so it knows from which tape to get what.) Or you can bootstrap from TK50 on a 730 with a TUK50 controller. You would, however, need to create your own TU58 media for Ultrix bootstrap. They can be constructed from file.01 and file.02 on the tape (which are on the FTP site), but I'm not sure of the exact algorithm and you'll need to look in the source code. I have complete sources for Ultrix V2.00 and V4.20 on the same FTP site. Not for V4.00, but since this stuff hasn't changed between V2.00 and V4.20 it logically follows that it should hold for V4.00 as well. Now even if you recreate the same Ultrix distribution TU58s that you would get >from DEC when buying Ultrix, you are still not all set. DEC's Ultrix distribution TU58s are not directly readable or bootable by the 730 console, and you need ANOTHER TU58, which is not part of any Ultrix distribution at all, with a sufficiently recent version of VMB.EXE and supporting stuff that knows how to boot non-VMS operating systems, probably the original version that came with the hardware in 1982 won't do. In other words you would be in for a lot of "fun". > (I know 4.3bsd would, and I'd like to fool around with netbsd but it > seems like ultrix might be a good way to bootstrap) 4.3BSD (either original or Quasijarus) is the easiest of all to bootstrap of any 11/7xx, including 730. Everything that you need is on ifctfvax.Harhan.ORG in the appropriate directory (/pub/UNIX/4.3BSD or /pub/UNIX/4.3BSD-Quasijarus0b): tape images and TU58 cassette image, and the TU58 is in RT-11 format directly readable by the 730 console, no VMB or other stuff is needed. Now here is something I want to ask you: would you happen to have an original DEC 730 console TU58 with the latest version of 730 microcode and console program they released? If you do, would you please make a block image (dd) of it? MS

22 years

off the wall PDP-11 question...

by chrisc＠addpower.com

I think I know the answer to this already...but I'll ask anyway. :) Can the PDP-11 use the frame buffer boards that a VAX would use for graphic displays?

22 years

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test-drb January 2004