test-drb May 2005

test-drb@ccmp.vtda.org

248 participants
723 discussions

Vintage Computer Web Site - may not be???

by dwight.elvey＠amd.com

Hi Curt I just talked with Tix ( owner of the site ) and he seemed at dismay. He says that he gets the pictures from a number of people that send them in. He doesn't always have the ability to filter out those that have been lifted from those that are original. Also, in the past, his site didn't have a place for credits ( I've looked at his site before ). It seems that he has added this and I'd suspect that the picture in question may have been there a long time. In any case, work with him. If you feel that he needs to pull the picture, just let him know. His English is a little rough, being Italian, but he is a good sort. I think he does a good job overall and I've noticed that in many places, he does give credits to the various sources. I think that his intentions are good. Dwight >From: "Curt @ Atari Museum" <curt at atarimuseum.com> > >Thanks Sellam... > > Yup, just as expected, several photo's taken from my site, old ones >too. Its not the case with this site, but have you ever seen the >sites that take photo's from your own site, then the site that steals >them put's their own watermark on them, that always raises an eyebrow >for the contempt displayed. Well, dispite this 1000bit site >plundering others to generate content to for itself, it is a nice >looking, well setup site. > > > >Curt > > > >Vintage Computer Festival wrote: > >>On Wed, 4 May 2005, Curt @ Atari Museum wrote: >>Mime-Version: 1.0 >>Content-Type: TEXT/PLAIN; charset=US-ASCII >> >> >> >>>I didn't see the original msg, whats the URL for this Vintage Computer >>>site... I find my images and content from atarimuseum.com constantly >>>commandeered by other sites and not so much as a simple text saying >>>"stolen without permission" ;-) >>> >>> >> >>Hey Curt! >> >>http://www.1000bit.net >> >> >> > > >-- >No virus found in this outgoing message. >Checked by AVG Anti-Virus. >Version: 7.0.308 / Virus Database: 266.11.3 - Release Date: 5/3/2005 > >

19 years, 7 months

Seven Segment Displays (but in avionics)

by ajp166＠bellatlantic.net

> >Subject: Re: Seven Segment Displays (but in avionics) > From: Brent Hilpert <hilpert at cs.ubc.ca> > Date: Thu, 05 May 2005 02:30:29 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > > > Do you have any more specific model information regarding these aircraft Line breaks every 80 or so chars would help. ARC 400 series. However, the ones they need have to have TSO offically or they are considered bootleg. Thats why they are rare and expensive. Allison

19 years, 7 months

search broken?

by drb＠msu.edu

Ok, it's meta-OT, but: if I search for "adrian" or "witchy" in the cctalk archives, I get no hits. Nor do I get hits for anything else I try. Unless it's personal, I'd say htdig has done on the classiccmp server what it likes to do on mine: malfunction occasionally. FWIW. De

19 years, 7 months

AIM 65 lives

by dm561＠torfree.net

If I duplicated a message to cctech, my apologies; what I meant to send was: I just confirmed that my recollection was correct and that the AIM65's TTY I/O is effectively RS-232 compatible. I connected an AIM65 to 3 different computers and they all communicated just as is, i.e. without any level conversion. Needless to say this assumes that the distance is fairly short. Just connect ground, J1-Y and J1-U to RS-232 ground, TX data & RX data respectively and if your RS-232 port is like mine, away you go. If you have trouble with autobaud, set the baud rate manually at A417/18 before switching to TTY. (Set the terminal/computer to 7 bits). Unfortunately the KIM-1 doesn't seem to have an RS-232 compatible serial input, so you'll have to add a limiting resistor & two clamping diodes and connect to U15-12 as the AIM does. mike

19 years, 7 months

XT 5160

by msokolov＠ivan.Harhan.ORG

woodelf <bfranchuk at jetnet.ab.ca> wrote: > Well I don't consider BASIC a programing langauge ... I consider it a > curse on mankind. Oooooooooh - we think alike! MS

19 years, 7 months

Pick assembly, was Re: XT 5160

by aek＠bitsavers.org

>>> I've always wanted to see what Pick assembly looked like. http://www.bitsavers.org/microdata/771009A_REALITYasmRef_May76.pdf

19 years, 7 months

Now hard drives too. Re: Modern floppy disk question...

by bpettit＠ix.netcom.com

Joe wrote: > It's not just high density. The newest maxtors DO suck! So do the latest > Seagates. For the ones of you that didn't know it, Glen Goodwin operates a > computer repair shop and has had LOTS of experience with this. I talked to > him about this and he recommended buying an IBM drive made by Fujitsu. I > bought one and have had NO trouble with it (knock on wood!). All of the > Seagates and Maxtors that I've tried in the last few years have failed > within six months. > > Joe The Pleasanton schoold distict bought a batch of systems with Fujitsu drives in them They started failing in such large numbers that the district bought enough spares to replace every one. Each school has somebody trained to do the swap. Last time I talked to one of their techs, they had replaced more than half of them and still had several failures a week. Failure was typically after several months of use. Because of summer shut down, many failured right after the warrenty ran out (beginning of 2nd year). Fujitsu won't replace them. The district now has standing orders to never buy another Fujitsu HD. I've replaced a lot of drives around the house and in old Apple systems. But I don't recall ever replacing anything less than 5 years old regardless of brand. Maybe I'm just lucky, or live right. Billy

19 years, 7 months

Minitrons, was Re: Seven Segment Displays

by marvin＠rain.org

Many thanks to everyone who responded to my question! The site at http://www.sphere.bc.ca/ has a lot of older type displays and the Minitron Seven Segment Displays were among them *including* a datasheet! The pricing I've seen ranged from about $7.00 to $44.00 each used and tested but so far, I haven't seen any prices for NOS parts. I do like the $100.00 per digit though :). > >The name 'minitron' seems to be floating in my brain for some reason... > > > >They could well be incandescent. I've seen such devices in a 16 pin DIL > >package, in a smaller package with 9 socket contacts on the back arranged > >like a miniature DE9 connector (those are used in the ICL Temiprinters > >for the column display, for example), and in a wire-ended valve-shaped > >envelope. > > I have a bunch of them too. Four are in a counter I made back in 73, > the rest are spares for it. Actually they are fairly nice and at about > 10MA brighter than leds of the time (I must ahve a dozen MAN-x series > LED 7 segments as well). > > FYI: those things are considered rare as hens teeth as most systems > that use them have burnt them out. One series of ARC (used in cessna > aircraft) radios had them as they were bright enough for day use > and I hear they cost about 100$+ per digit to replace. > > Allison

19 years, 7 months

All things ESDI

by lproven＠gmail.com

On 5/5/05, John A. Dundas III <dundas at caltech.edu> wrote: > Are ESDI drives compatible with ST506 controllers? > > Are MFM drives compatible with ESDI controllers? No. TTBOMK, the tecnological progression went: Generation 1: ST-506 G2: RLL (which was just ST-506 with different encoding giving about 25% greater capacity; drives *could* be exchanged but weren't rated or guaranteed at the higher capacity and might work, might not, or might work for a while then fail) G3: ESDI (higher capacities, greater transfer rates, slightly more intelligence on the drive and less in the controller) G4: IDE (all controller logic is embedden in the drive, which attaches straight onto the PC ISA AT bus, thus the name AT Attachment or ATA; first change of cabling, from one shared control cable for each pair of drives plus two data cables) (Next came the ATA Packet Interface, allowing non-HD devices to be attached, primarily optical drives - CD-ROMs etc. - but also Zip & Jaz type removable drives, tape drives and so on) G5: EIDE (unsure of the exact technical difference, but I think it's the addition of Logical Block Addressing - LBA - in place of simple Cylinder:Head:Sector (CHS) addressing) G6: UltraIDE (doubled the nunber of conductors in the cable to 80 to reduce crosstalk, allowing doubling of the transfer speed to 16Mb/sec; AKA UltraDMA and other names) G7: UltraDMA/33 (another doubling) G8: UltraDMA/66 (and another) G9: UltraDMA/100 (running out of headroom now) G10: UltraDMA/133 G9: SATA, Serial ATA. Another change of cabling, to serial cables, one per drive; no more sharing, no more master/slave assignments or jumper settings. SATA 1 ran at a nominal 150Mb/s but initial drive mechanisms couldn't deliver data off disk that fast, so it was no faster than UltraDMA/133. However, now we're heading towards... G10: SATA2. I can't recall the speeds offhand but it's more than doubled, I think. Of course, in the same timeframe, SCSI has been doing its own thing, more than keeping pace overall. Then there's Fibre Channel, and in the olden days there was Xilinx and other systems... -- Liam Proven Home: http://welcome.to/liamsweb * Blog: http://lproven.livejournal.com AOL, Yahoo UK: liamproven * ICQ: 73187508 * MSN: lproven at hotmail.com

19 years, 7 months

HP 21mx on epay

by dwight.elvey＠amd.com

Hi It even has the battery bypass jumper plug. I don't see any cables though. I wish I had the space and some cheap way to transport this. Dwight >From: "jim stephens" <jwstephens at msm.umr.edu> > >in penciltucky (aka Marietta, Pa) too far for me > >from the auction description: >Model 21MX E series >The price is for the lot. >Includes >2 ea Model 7970E digital tape units, >1600 CPI read after write; >General Electric TermiNet 340 pin feed printer; >3 ea Model 7920 disk drives; >6 ea Model 7925 disk drives > >here's the auction in case you can't get the following to play as a >link 5193795534 > > >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5193795534&ssPageName=AD… :EF:US:1 > > > > >

19 years, 7 months

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test-drb May 2005