test-drb January 2006

test-drb@ccmp.vtda.org

240 participants
511 discussions

by trag＠io.com

>Date: Sat, 14 Jan 2006 18:10:28 -0500 >From: "Richard A. Cini" <rcini at optonline.net> >Subject: Stupid Mac Ethernet question > I just recently upgraded the network cabling in my house to 5e >as part of some new construction, and I also upgraded the networking >components. Now, all of my normal machines run at 100 full duplex. Anyway. > > The strangest thing happened to my Mac IIci - the Ethernet >connection no longer works. I don't even get a link light on the new switch >(a Cisco/Linksys switch). However, when I plug the Mac into a plain old 10BT >hub and then uplink it to the switch, I at least get a link light. The solution (intervening 10Mbps hub) recommended by the other posters is the way to go--or change to a different ethernet card. This is a well-known (within vintage Mac circles) issue with older Asante ethernet cards. For some reason the 10/100 negotiation fails to work properly and the old 10Mbps card doesn't make a connection. Or you could try to find one of the old Asante or Farallon 10/100 NuBus ethernet cards. They seem to go for considerably more than the usual market value of the IIci. :-) Jeff Walther

18 years, 11 months

Thinking about selling my VAX, any interest?

by alanp＠snowmoose.com

I have an 11/750 that I am thinking about selling. My storage situation may be becoming unstable and I am thinking that I would rather have it in a safe home than have to move quickly to somewhere less desireable. It is a 750 with an expansion cabinet, a TU80 tape drive, a SA482 (i think that is the number) rack and 4 disk drives (2 RA81s, 2 RA82s). It is located in the Seattle, WA area. Anyone interested in it? alan

18 years, 11 months

Other lists for Vintage Video Games perhaps?

by lsprung＠optonline.net

Folks: I apologize in advance if anyone finds this question off topic, but is anyone aware of a list like this one for the topic of vintage video games? Thank you,

18 years, 11 months

Not OT: Classic apps and the Intel Mac

by spectre＠floodgap.com

Well, the Intel Mac has emerged and with that we can conclude that the end of the Classic era is near, as Rosetta will officially not support Classic applications. This means a lot of legacy software is now suddenly worthless on the next generation of Macintoshes. Worse, I'm hearing a rumour that 10.5 will strip Classic out even for PPC Macs. Has anyone else heard this? I still use a number of 68K apps I picked up for a song because they do the job, they're fast, and they were cheap. I'm not giving that up so easily. -- --------------------------------- personal: http://www.armory.com/~spectre/ --- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- A kindness done today is the surest way to a brighter tomorrow. -- Anonymous

18 years, 11 months

70's micros still available - was 1802 problems

by bobalan＠sbcglobal.net

I believe the Zilog Z80 is still made. At least it was in 2004. May be a different part number though. Bob Message: 16 Date: Mon, 02 Jan 2006 10:13:52 -0500 From: shoppa_classiccmp at trailing-edge.com (Tim Shoppa) Subject: Re: 1802 problems To: cctalk at classiccmp.org Message-ID: <20060102151352.66303BA47EA at mini-me.trailing-edge.com> Content-Type: text/plain; charset=us-ascii Pete Turnbull <pete at dunnington.plus.com> wrote: >> It was used because there was a rad-hard silicon-on-sapphire version, >> and then some people used the standard versions so they could use the >> same code and tools. > > Up until just a few years ago (2002?), Harris/Intersil web pages listed the SOS 1802 as a current product, along with more conventional CMOS 1802's and support chips. If I have the chronology right, Harris bought much of RCA's line in the 90's and Intersil bought them out a few years later. But they've been dropping a lot of classic parts (including the CA3046, which I never believed would go out of style! There are newer surface-mount differential pairs of course but not quite the same as the good old CA3046 in a can...) Many of the hobbyist-oriented retailers still have plenty of old stock though. What 70's era micros are still in production? Z80, I'm sure. 8088, probably (although probably not in an Intel fab.) Anything else? If I look in the BG Micro or Jameco catalog I see lots of 70's era micros and support chips but I'm sure that most of those parts are pulls or old stock. Tim. -------- > >

18 years, 11 months

Unknown Honeywell tape drive - Full disclosure!

by aek＠bitsavers.org

Do you want to see my 9-track HP 7970B with 200, 556 and 800 bpi densities? -- Not necessary. I have two. If you look at the 7970B manual, there is a configuration matrix which shows that the only HP drive which supported sub 800 bpi densities and 9 track tapes is a read-only drive with dual 7 and 9 track head stacks. What would be more interesting is if you could find any place in the ANSI standards documenting a sub 800 bpi 9 track 1/2" tape format. 800bpi 9 track was invented by IBM for System 360, which went from 6 to 8 bit character encodings. There would have been no reason to support lower densities on these drives, since all of the previous IBM tape drives were 7 track.

18 years, 11 months

Thanks again, Dave!

by cclist＠sydex.com

On 1/16/2006 at 4:39 PM Fred Cisin wrote: >On Tue, 17 Jan 2006, Tony Duell wrote: >> What is the chip (assuming ti's not just an 8272 / 765), and what floppy >> tape cards should I be looking for? > >IIRC 37C65 >definitely NOT a big deal. Also, National 8477, Intel 82077 (but not the AA-1; those will read, but not write FM); even the Intel 820781 should be okay for FM reading (depending on software, may require an oscillator change). Other non-compaticards that work just fine are the Sysgen Omnibridge; and the WD1002A-FOX. The add-in cards with the National DP8473 controllers are very nice. Not only do they read and write FM, but they'll also read and write 128 byte MFM sectors just fine. Cheers, Chuck

18 years, 11 months

AC power on front panels

by pete＠dunnington.plus.com

On Jan 17 2006, 9:29, Gooijen, Henk wrote: > Thanks for that remark, Pete! > I did not want to go into "pedantic" mode, but I was indeed > thinking about the capacitors in the EMI filter, but thought > that chances are very slim that they fail. But they can! > Once in ten years is good, except if it's *your* filter that > fails :-) It was one of the big sealed metal can filters. I didn't think I'd be able to open it up and repair it without a blowtorch and excessive heat so I just replaced it. I don't know exactly what failed inside, but no power reached the rest of the box, so perhaps not a capacitor. The modern replacement filter was somewhat smaller and lighter, I recall. Having the Y-class suppressor caps blow up in input filters is a common failure mode in some SMPSUs, notable the ones used in BBC Micros. Several people have reported this on the BBC mailing list in the last year or two. -- Pete Peter Turnbull Network Manager University of York

18 years, 11 months

In Germany: IBM Office System 6, Prozessor 6/420 from 1977

by fm.arnold＠gmx.net

Near Koblenz: an IBM Office System 6, Processor 6/420 from 1977. Waiting for a taker. Includes some training SW and handbook. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=8749623945 Frank

18 years, 11 months

AC power on front panels

by pete＠dunnington.plus.com

On Jan 16 2006, 13:59, Patrick Finnegan wrote: > On Monday 16 January 2006 04:09, Gooijen, Henk wrote: > > I always pull the plugs on my PDP-11s, because the small > > transformer in the power controller is always connected. > > You could also just flip off the breaker on the power controller, which > disconnects everything* in the PCU from the mains. > > * Except for the EMI filter, inlet power cable, plug from the wall, etc. :) I've had to repair 861 power controllers twice in the last ten years or so -- once was indeed the EMI filter :-) -- Pete Peter Turnbull Network Manager University of York

18 years, 11 months

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test-drb January 2006