test-drb August 1998

test-drb@ccmp.vtda.org

166 participants
848 discussions

by Marion.Bates＠Dartmouth.EDU

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25 years, 11 months

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

by Marion.Bates＠Dartmouth.EDU

--- Tony Duell wrote: Do you have a working battery in the machine? IIRC, the PSU can't supply enough current on it's own to get the machine and hard disk started up. When the hard disk tries to spin up, the PSU shuts down, etc. Giving you exactly what you're seeing -tony --- end of quote --- Really? I'm charging a pair of batteries overnight. Tomorrow I'll see if anything works with a charged battery. I thought that with the 9-volt backup and the power adapter, that was enough juice -- Uncle Roger, is that what you were saying earlier? Thank you very much! -- MB

25 years, 11 months

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

by Marion.Bates＠Dartmouth.EDU

--- George Currie wrote: Actually it should power up with the 9v and the power supply. If you have a fresh 9v battery and have the unit plugged in and it still won't come up, then the problem could still be with the drive. Have you tried removing it and seeing if the unit boots? Also, have you tried pressing both the reset and nmi buttons on the side to reset it? --- end of quote --- Yes, it's been powering up with just the AC adapter and 9-volt battery, and it boots fine with the hard drive cable disconnected (it's happy booting from a floppy). I'm pretty sure I tried pressing the side buttons in all sorts of combinations -- what specifically are you describing? Just press them and let go, or hold them down while powering on, etc. ? Thanks for the suggestions. -- MB

25 years, 11 months

Minor Tektronix success story.

by Philip.Belben＠powertech.co.uk

Jeff wrote: > Yow!!! That means maybe it will run FLEX! [insert Homer Simpson > impersonation] Could someone please enlighten me... What, pray, is FLEX? > 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. 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. And Tek do claim some quite impressive performance boosts upgrading from 4051 to 4052 (average gain they claimed was ten times, I think) > 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. I must do some more research into the relationship between 4052 and 6800 instruction sets. P.

25 years, 11 months

Macs, IBM systems, roms, etc etc...

by fauradon＠pclink.com

Hi John, I would love to join you in that effort. I am also interested in acquiring on of each unit. Maybe we can poll our resources and make a few people happy in the process. Anyway, Eric if you can find out the actual cost per palette that would be a great indicator of the fund needed. Thank you for flagging this one. Francois ------------------------------------------------------------- Visit the desperately in need of update Sanctuary at: http://www.pclink.com/fauradon -----Original Message----- From: John R. Keys Jr. <jrkeys(a)concentric.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, August 19, 1998 10:13 PM Subject: Re: Macs, IBM systems, roms, etc etc... >I'm right here in the Twincities also and would like to purchase some of >the machines. Here's my offer to those on the list that want some of these >items in one's and two's e-mail your list and the price you want to pay for >each item and I will make them a offer for all of it. You have only pay me >the shipping cost plus the item cost. If I get it all cheap enough them I >will divide the number of units into the price I pay and charge the lower >price per unit. Say I get 100 items at $300 that means the cost per item >would be $3. I do not need it all I also just want one of each type of unit >for my collection that I do not already have. Let me know as soon as >possible before it's all gone. Thanks Eric for the tip and I will get back >to my Friday with some type of offer based me being able maybe see some of >these units. >At 09:09 PM 8/19/98 -0500, you wrote: >>Ok, after a few more days of scoping things out, here's the deal: I >>started working for GE Capital, at Blue Cross/Blue Shield of Minnesota. >>They are disposing of alot of the mac systems, and I figured that I >>would be able to pull the ROM's out of the old ones that I knew were >>never going to be used again, ever. (Just so you know, I would probably >>lose my job due to that but it's a shame to let such things go to waste. >>If someone reading this is from my new employers, I haven't done >>anything!!!!!) >> >> Anyway, one of my bosses, the asset manager, is actively trying to >>dispose of pallets of stuff. So if someone out there can actually buy >>quite a bit, that might be nice... apparently last year he made 300 >>bucks selling all systems to scrap dealers that melted it all for the >>metal content. bummer.) >> >> We have lots of old IBM mainframe systems, Quads, CRTs, etc etc. also, >>a good lot of those macs were all used by the Graphic Design dept; so >>they are chock full of cool stuff (tons of ram, souped up video cards, >>yadda yadda.) lots of hard drives, all have token ring cards. (I >>reiterate: LOTS of token ring cards. I'm swimming in them.) I currently >>have a large pallet of mac 14/15 inch monitors; a pallet of IIsi, IIci, >>IIcx's; Quadra 700s, Quadra 950 servers(awesome machines), PowerPC >>7100/66, 7100/80's. also other random ones. also, *several* pallets of >>Duo Dock 230's and 280's. tons of NEC versa V/50's and 4000c's. quite a >>few 21 inch mac color monitors (definitely not for sale, unless you made >>an attractive offer to my boss!) >> >> alot of this stuff is earmarked for employee sales, but alot of it is >>also headed for disposal. If anyone is truly interested, I will print >>out and give serious inquiries to my boss. emailing the head of a large >>national corporation won't do much, but I can give your requests to the >>right person. >> >> in Minneapolis, Minnesota. >> >>-Eric >> >> (PS. - I only offered to grab roms or small chip components because >>they wouldn't be used where the machines were headed, and they wouldn't >>be missed. I cannot personally recover systems or anything of that >>nature. I am sure however that my boss would be very reasonable if you >>made an offer!) >> >> PPS- we also have several sony trinitron touch screens. anyone know of >>a use for these? >> >> >

25 years, 11 months

Battery? (RE: Mac Portable problems (was Re: Mac Portable batt ch arger))

by Marion.Bates＠Dartmouth.EDU

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25 years, 11 months

Minor Tektronix success story.

by jeff.kaneko＠ifrsys.com

At 09:42 PM 8/20/98 -0500, you wrote: >Jeff Kaneko wrote: > >> 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. :-/ > >Some of this can be found at <http://www.rtmx.com/UniFLEX/>. Also >further FLEX stuff at <http://www.blackbelt.com/flexem.html>. > >Regards, > >_---_--__-_-_----__-_----_-__-__-_-___--_-__--___-__----__--_--__-___- >Hans B Pufal Comprehensive Computer Catalogue ><mailto:hansp@plato.digiweb.com> <http://plato.digiweb.com/~hansp/ccc> > But all of this is for the 6809. None of this references the 6800/6802. I contend that the original FLEX/2 sources will remain lost to the world. It's a shame, too, as it was the first commercially successful OS for *any* Motorola processor. It was to Moto what CP/M was to Intel. Jeff

25 years, 11 months

Mathatron, 9100, 9830, etc.

by fmc＠reanimators.org

Doug Yowza <yowza(a)yowza.com> wrote: > Of course, you know that Woz worked at HP before doing the Apple thing. > The resemblance of the Apple ][ to the HP desktops (esp. the 9825) is > pretty striking. Look inside a Lisa someday -- it's got color-coded card lifters. That's what convinced me that Apple of the late 1970s was just an HP wannabe. -Frank McConnell

25 years, 11 months

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

by Marion.Bates＠Dartmouth.EDU

--- 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

25 years, 11 months

Battery? (RE: Mac Portable problems (was Re: Mac Portable batt ch arger))

by kaikal＠MICROSOFT.com

Where can I get a replacement battery? Kai -----Original Message----- From: Marion.Bates(a)Dartmouth.EDU [mailto:Marion.Bates@Dartmouth.EDU] Sent: Thursday, August 20, 1998 1:48 PM To: Discussion re-collecting of classic computers Subject: RE: Mac Portable problems (was Re: Mac Portable batt charger) --- "Dellett, Anthony" wrote: Hmmm... Check out this URL... You can replace the internal HD40SC with any 3.5" drive ya want. Tony http://www.micromac.com/products/portable_scsi.html --- end of quote --- Wow! After I tinker with these old ones a little more, I might just go with that. Thanks! -- MB

25 years, 11 months

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test-drb August 1998