test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jeff.kaneko＠ifrsys.com

Not that I know of. TSC went under some years ago; we all assumed that it took the source to its grave. Rumour has it that some former employees of TSC *may* possess some sources, but they have not stepped foreward. FWIW: A co-worker of mine was approached some years ago with an offer to sell the FLEX sources. My co-worker wasn't interested, and the guy went away. Don't know who he was. For all we know, it ended up in the dumpster. :-/ Jeff At 02:33 PM 8/20/98 -0500, you wrote: > >< For years, it was *THE* disk operating system if you had a 6800/6802 bas >< system. Originally written in the late 70's, it powered the majority o >< the SS-50 computers until the 6809 came out. Then came FLEX/09, StarDOS >< UniFLEX, OS/9. . . . > >Are sources available? >

28 years

Mac Portable problems (was Re: Mac Portable batt charger)

by Anthony.Dellett＠Staples.com

Hmmm... Seems that if a Mac Portable battery is dead, you cant power the machine even with the AC adaptor. I'm certain this has something to do with my problem. It also seems that if the Mac Portable battery ever gets discharged below 5.4v it becomes a doorstop. Tony

28 years

Mac Portable problems (was Re: Mac Portable batt charger)

by Anthony.Dellett＠Staples.com

I have no idea if it makes any difference or not. My guess is that the 9V powers some parameter ram or something. It just makes me wonder that all three Mac portables you have all contain dead HDs ? Tony -----Original Message----- From: Marion.Bates(a)Dartmouth.EDU [mailto:Marion.Bates@Dartmouth.EDU] Sent: Thursday, August 20, 1998 3:19 PM To: Discussion re-collecting of classic computers Subject: Re: Mac Portable problems (was Re: Mac Portable batt charger) --- "Tony Dellett" wrote: I have the same problem with my Mac Portable but I havent had much time to tinker with it. Have you replaced the 9 volt battery? I'm wondering if that might have something to do with it in some strange, phases-of-the-moon way. --- end of quote --- I checked the backup battery and it read 8.7 volts or something, which I figured was adequate...maybe not? -- MB

28 years

Mac Portable problems (was Re: Mac Portable batt charger)

by Marion.Bates＠Dartmouth.EDU

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28 years

Mac Portable problems (was Re: Mac Portable batt charger)

by workapulo＠my-dejanews.com

I have the same problem with my Mac Portable but I havent had much time to tinker with it. Have you replaced the 9 volt battery? I'm wondering if that might have something to do with it in some strange, phases-of-the-moon way. Tony (this is my hit the home email from work route, dont reply to this email address) -- On 20 Aug 98 14:56:48 EDT Marion Bates wrote: >--- Tom Owad wrote: >>Can someone tell me what the output of the Mac Portable battery charger >>should >>be? (What I should read across the charger contacts?) When I plug it in >>using a >>known-good AC adapter, then place the battery on it, there's no LED glow. > >It's most likely the same as the Mac Portable's power adapter, which is >7.5vdc, 1.5A. >--- end of quote --- > >Thanks for the info. Actually, according to Apple Service Source docs (found 'em after I posted the question) the charger puts out about a volt less. The power adapter itself is fine, but the external charger seems to be fried. > >I have a more pressing problem now. Basically, the computer has a grand mal seizure whenever the internal hard drive is connected. > >I've got three semi-functional Portables, and am hoping to wind up with at least one that works. But they all seem to have bad hard disks (Apple 40SC internal) -- if the drive is connected at power-up, it makes a tick-tick-tick noise, the screen flashes, and it repeatedly plays interrupted Death Chimes until I turn it off. The drive never actually spins up. > >I'm not familiar with that hard drive model. Since there's no separate power cable, I assume it's some sort of funky low-power-combined-with-SCSI thing. So, anyone got any ideas about what to do with them (besides drop-kick 'em into a swimming pool)? Is there some goofy reset I can do, or a bad fuse somewhere to replace? > >If there's no repair possible, then is there any other kind of hard drive that will work in a Portable? Or does someone have a spare they'd sell/trade? > >-- MB > > -----== Sent via Deja News, The Discussion Network ==----- http://www.dejanews.com/ Easy access to 50,000+ discussion forums

28 years

Minor Tektronix success story.

by jeff.kaneko＠ifrsys.com

At 04:52 PM 8/20/98 -0500, you wrote: >Jeff wrote: > >> Yow!!! That means maybe it will run FLEX! [insert Homer Simpson >> impersonation] > >Could someone please enlighten me... What, pray, is FLEX? For years, it was *THE* disk operating system if you had a 6800/6802 based system. Originally written in the late 70's, it powered the majority of the SS-50 computers until the 6809 came out. Then came FLEX/09, StarDOS, UniFLEX, OS/9. . . . There were other (some better) DOS's that were available at the time from Smoke Signal, Moto, and a couple of others, but FLEX gained alot of support >from developers, and had alot of applications. I'm trying to get one of my s-50's working again so I can play with FLEX (I won't settle for emulation when I can have the *real* thing). It was a bit limited, but it was small enough to fit within the 6800's 64K address space, with *plenty* of room to spare! >> Woo Hoo!. Dang! I can just imagine running FLEX at 25Mc! Its performance >> over a 1Mc 6800 must have been blistering! > >Warning. Clock speeds may not be comparable. 6800 and friends >(including 6502) often do more per cycle than 2901s. Well, yeah, but still faster then 1Mc (or 800kc if you didn't modify the cpu board). >That said, the 4052 is a 16 bit system, despite its 8-bit instruction >set. The data path is 16 bit throughout, it fetches two byte >instructions in a single memory cycle, etc. OIC >And Tek do claim some quite impressive performance boosts upgrading from >4051 to 4052 (average gain they claimed was ten times, I think) Yeah, still pretty hot s---. >> Yikes!! I think I may have seen some boards from a system like that one >> in a junk heap last week! It used four 2901's eh? Hm, I'm gonna haveto >> revisit that particular junque pile . . . > >Bear in mind Tony Duell's comments - 16 bit systems based around 4 2901s >used to be common, but may now be worth grabbing anyway. Umm, yeah, but being a 6800 enthusiast, this carries with it some especially interesting possibilities! >I must do some more research into the relationship between 4052 and 6800 >instruction sets. Yes. How the implemented the microcode would be of particular interest. Jeff

28 years

Minor Tektronix success story.

by allisonp＠world.std.com

< For years, it was *THE* disk operating system if you had a 6800/6802 bas < system. Originally written in the late 70's, it powered the majority o < the SS-50 computers until the 6809 came out. Then came FLEX/09, StarDOS < UniFLEX, OS/9. . . . Are sources available?

28 years

Mac Portable batt charger

by tomowad＠earthlink.net

>Can someone tell me what the output of the Mac Portable battery charger >should >be? (What I should read across the charger contacts?) When I plug it in >using a >known-good AC adapter, then place the battery on it, there's no LED glow. It's most likely the same as the Mac Portable's power adapter, which is 7.5vdc, 1.5A. Paul Kelbaugh <kelbaugh(a)aol.com> has Mac Portable power adapters for sale for around $25, I believe. Tom Owad -- Sysop of Caesarville Online Client software at: <http://home.earthlink.net/~tomowad/>

28 years

Altair - A different perspective

by sinasohn＠ricochet.net

At 07:23 PM 8/19/98 +0100, you wrote: >> We had quite a few when I was growing up (ds21's, mostly, including a >> wagon) and they were maintained by a Citroen-only shop, but still, I'd > >Having seen the sort of work put out by Citroen Main Dealers in the UK, >I'd sooner let a PC repairman fix one of my computers than let some of Nah, these were frenchmen, (independents) known throughout the state as the best in Citroens. That's all they did. They had no problem working on the citroens and keeping them running. I, on the other hand, couldn't understand the inner or outer workings of those vehicles. I still think that whoever designed 'em must have been jealous of swiss watchmakers, but with all the design skills of the samsonite gorilla. >> And to relate it to classic computers, it was about 10 years ago that I >> drove through downtown SF in a Citroen with a flat tyre and Jerry Pournelle > >Oh, but Citroens are easy to change wheels on. That's what the highest >position on the height controller is for.... Yeah, but you have to remove the (rear) fender to get the wheel off, (I'm not kidding!) and who wants to do that when you've got (what I at the time considered) a major celebrity in the car? I limped along back to Moscone and dropped everyone off before skulking off to a nearby parking lot... P.S., I still have scars on my right hand from another time working on those #$&*@( things... Give me a Land Rover any day! 8^) --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/

28 years

MCA ethernet cards

by rhblake＠bbtel.com

Still in need of a few microchannel (for PS/2) ethernet adapters with the BNC 10base2 setup. Doesn't matter if they have AUI or RJ45 with it as well, as long as it has the BNC/10base2 setup. I don't need 3270 cards so check any cards you think you have with the BNC connector to see what they are. Looking for donations, trades or reasonable priced cards for a parochial school network project that's overdue. I've gotten a few good reponses and have a couple on the way but I'm going to be about 4 or so short yet. I've also gotten one or two ridiculously high quotes for used cards. This is a project on a shoestring budget so no $30 or $40 cards please. Russ Blakeman Harned, KY USA

28 years

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