test-drb June 2002

test-drb@ccmp.vtda.org

205 participants
502 discussions

Mac SE/30 (was Re: [CCTECH] New Finds This Week)

by mythtech＠mac.com

>> The SE/30 has 8 30 pin slots, and is rated to use a max of 4 MB chips. >> That gives it a max RAM of 32 MB. > >The important word is "rated". No... Apple never rated the SE/30 >for 16MB SIMMs, but various sources claim they work. Humm... good to know. Maybe I'll give it a try some time. >I have had that experience trying to use 64MB 72-pin SIMMs. The reason >it doesn't work is complicated but logical. Is is *possible* to >make a 64MB SIMM work in, say, a 660av, but most of the ones that >happened to have been manufactured have an incompatible refresh scheme. Well, RAM issues aside, some Macs just simply won't look at total memory higher than they are rated for. For example, the LC II supports 4 MB simms, and you can install 2 of them. Added to the 4 MB on the logic board, you have a total of 12 MB installed... but it will only "see" 10 MB of it (this I have tried first hand). And IIRC, I have read that the PM 6400/6500 will support 128 MB chips, but even if you install 2 of them, they will only "see" 128 MB total (I haven't tried despite having a 6500, mine just has 2 64's in it maxing it out). There are other PowerMacs that are supposed to be the same way. But then, there are the ones that it does seem to work with. Like the 7200 that is spec'd for 64 MBs max (total of 256 MB installed), but in fact can use 128 MB chips, and will see the full 512 MB of space. And then there are ones like the PowerBook 1400 that have mixed reports. Some people report being able to go above 64 MB, others say you can't. My guess is both are true, and probably has to do with a board revision. (another that I haven't tried despite having the system) I just tossed the info about the SE/30 out there because I didn't want you to go in blind assuming it would work, and then go nuts trying to figure out why it didn't (if in fact it didn't, but like you have pointed out, there are reports that it will). -chris <http://www.mythtech.net>

23 years

74S409 (was Re: Anyone have a data sheet on the MC3242?)

by Lee.Davison＠merlincommunications.com

[Driving DRAM] The number of populated banks affected the values of the resistors. You should have split the resistance between banks. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years

China bans toxic American computer junk

by tothwolf＠concentric.net

Didn't see anyone else mention this story, though it isn't exactly front-page news... China bans toxic American computer junk: http://www.guardian.co.uk/international/story/0,3604,725756,00.html Maybe this will help save just a few systems... -Toth

23 years

China bans toxic American computer junk

by rigdonj＠cfl.rr.com

At 04:57 AM 6/8/02 -0500, you wrote: >On Fri, 7 Jun 2002, Joe wrote: >> At 05:42 PM 6/7/02 -0500, you wrote: >> >> > Didn't see anyone else mention this story, though it isn't exactly >> > front-page news... >> > >> > China bans toxic American computer junk: >> > http://www.guardian.co.uk/international/story/0,3604,725756,00.html >> > >> > Maybe this will help save just a few systems... >> >> Yes, but I fear we'll soon be swimming in computer scrap. The amount >> of scrap that we've been exporting is tremendous. > >I guess US companies will have to start dealing with scrap in better ways >now. Of course, it does also mean we might have a better chance to grab >the better parts and systems before they are scrapped. It also seems that >it would be more profitable for companies to sell (or even give away) such >old systems to folks that will give them a home (possibly with a signed >agreement transferring the responsibility for recycling to the new owner) >rather than deal with the scrapping and recycling of it. > >If China's ban works, the better metals will also quit finding their way >out of the US. Better metals!?!?! You MUST be kidding! The metal in 99% computers is about one level above slag. There might be some decent metal in some OLD computers but for every old computer (with or without decent metal) there will be 500 modern (ie made of plastic and tin foil) PCs. I foresee a big boost in the amount of recycled plastic that will be available. The recyclers that I know are currently piling up the steel since it costs more to haul it to a recycling center than it's worth. Most of the *old* systems were made with high grade >aluminum and steel. It appears those are some of the materials (as well as >lots and lots of plastics and lead...) that are piling up in places like >China. The only metals that seem to be of immediate value to the scrappers >are gold, silver, and to a limited degree, copper. And aluminium if it's clean and in decent size pieces. However modern PCs have just about zero metal in them and virtually no gold silver or copper. I realize that some edge connectors have gold and there is copper on the circuit boards but the amounts are miniscule and certainly not worth the labor and chemicals to extract it. But seriously, I was talking to Gary and he said that he's thinking of starting a computer recycling center. I'm thinking that that might not be a bad idea for some of us that are interested in old systems. Since the US will no longer be able to dump the stuff overseas, there should be a big demand for people/places that will accept computers and recycle them. In addition, we would have our pick of anything interesting. Joe > >-Toth > >

23 years

74S409 (was Re: Anyone have a data sheet on the MC3242?)

by Lee.Davison＠merlincommunications.com

> [Driving DRAM] >> The number of populated banks affected the >> values of the resistors. > You should have split the resistance between banks. I was not the engineer. I was the stock boy. This was a long time ago. The engineer should have split the resistance between banks. 8^)= Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years

CI networking, need some help debugging ...

by gunther＠aurora.regenstrief.org

Hi, I have now the two VAX6450s with CIBCA and connected through the star coupler. I was eager to see them talk IP through the CI but unfortunately it doesn't work. I'm under Ultrix 4.5 and I use ifconfig scs0 inet 192.168.17.1 netmask 255.255.255.0 on the one machine and ifconfig scs0 inet 192.168.17.2 netmask 255.255.255.0 on the other machine. If I check the status with just ifconfig scs0 It says it's up and fine. But ping self doesn't work and ping each other doesn't work either. From reading the scs man page, it mumbles something about host numbers having to be between 1 and 15. But I have no clue what they mean. I don't know my CI node numbers either. I'm wondering if I should know those and configure them somehow. I also wonder if this SCS IP has some arp? Would be really cool to have tcpdump for Ultrix. What's the best way to step by step get a CI system debugged? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

23 years

Festival of Inappropriate Technology??

by wh.sudbrink＠verizon.net

This event seemed sort-of on topic... look here: http://www.xcom2002.com/ Did any of the UK list members attend this? Any reports?

23 years

Anyone have a data sheet on the MC3242?

by erd_6502＠yahoo.com

I'm stripping interesting parts off of these stat mux boards that I recently got around the corner - lots of socketed 6502s and 65c02s, 2532s and the like. Many of the boards have a 24-pin DIP MC3242 which I can find little about - Google only gives me one meaningful hit that it's a "Motorola Mux and Refresh". I'm trying to determine if it's worth desoldering any. I'm currently using a hot-air desolderer, so it's not a _lot_ of effort, but, for example, I'm not bothering to pull the popcorn TTL parts, just memory and "interesting" parts. So... anyone have any information on the MC3242 and why I might want to save a couple dozen of them? -ethan __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com

23 years

[OT] measuring DC wall wart

by acme_ent＠bellsouth.net

> From: Tony Duell <ard(a)p850ug1.demon.co.uk> > Not everyone has 2N3055s lying about. They don't?!? Glen 0/0

23 years

OT, private response: Need Windows XP help

by foo＠siconic.com

Is there anyone here fairly expert at Windows XP installations that I can bounce a few questions off of? Please reply private to <sellam(a)vintage.org>. Thanks! Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years

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test-drb June 2002