At 07:14 PM 4/28/98, you wrote:
>GRID 8088 XT Laptop. Rugged Construction. 720k FDD, No HDD, 512k Mem,
>SER/PAR, Plasma Screen, AC Adapter Module substitutes battery. Works
>Perfectly. Good for diagnostics, automotive, marine, etc. Excellent
>condition. Buyer prepays with money order or check and pays shipping.
It sounds like a GridCase3. Probably worth $45 easy. That AC module is
definitely worth something. If I hadn't just bought a TRS-80 m600 and a
Televideo Portable PC, I'd probably go for it, but (luckily?) I already
have one. Sure would like that AC Module, though!
--------------------------------------------------------------------- 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/
I finally had enough time today to go to Canadian Tire and pick up a set
of allen wrenches, so I finally pulled the disk drives out of my ailing
Kaypro 2.
I moved the resistor pack to what was formerly drive A, and swapped the
jumper blocks, put everything back together... and it worked! The Kaypro
2 booted up WordStar with absolutely no problems.
Now drive B (formerly drive A) can't be accessed. It gets a "Bdos Err On
B: Bad Sector" on known good disks. So it's definitely the drive that's
bad.
Mechanically the drive seems sound, so I guess I have to assume that
there's something wrong with the electronics. I haven't done a
side-by-side comparison with a working Tandon drive to see if there's any
obvious differences, though.
Doug Spence
ds_spenc(a)alcor.concordia.ca
>On Wed, 22 Apr 1998, Doug Spence wrote:
>> There were all kinds of small Apple cloners around, with various
Apple
>> variety and fruit names ("Granny Smith", "McIntosh", "Pear", etc.).
The
Any lawsuits there with that second item?
>> Apple ][+ was the lack of the Apple logo, and usually the presence of
>> lower case display (though not necessarily the shift-key mod, which
my
>> machine lacks). Some had additional stuff, though, like function
keys and
>> slightly differently shaped cases. Or maybe a different colour of
>> plastic.
>>
>> Maybe I should start collecting Apple clones, seeing as I see them
more
>> frequently than actual Apples (clones were more affordable).
I have seen a Franklin once, and the rest were real Apples.
>I think the clones are more interesting than the real Apples at this
>point. They are more varied and in most areas are less common. More
>importantly they do have a historical significance.
So how many of them were there (ballpark)?
>> So the Soviets pirated the Apple ][, who didn't?
>>
>> A shame about the price, though. Why pirate the Apple if your clone
is
>> going to be even MORE expensive than the real thing?
>
So that you can sell it back to the US and make a profit!
>
>> BTW, my clone fell ill a while ago, and I've replaced it with a
genuine
>> Apple //e (the clone is back in its original box). Thanks to
>> depreciation, the //e was *much* less expensive than the clone was.
And
>> it even had an additional 256K RAM card in it (now populated up to
512K).
>> :)
>>
>> Too bad the //e won't work with any of my Z80 cards. :/
>
There has been a Z-80 card made for the Apple //c, which plugged into
the processor socket. Has anyone seen it? I only saw it in a catalog.
>
>Sam Alternate e-mail:
dastar(a)siconic.com
>-------------------------------------------------------------------------------
>Don't blame me...I voted for Satan.
>
> Coming in September...Vintage Computer Festival 2.0
> See http://www.siconic.com/vcf for details!
> [Last web page update: 04/13/98]
>
>
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In a message dated 98-04-29 09:23:09 EDT, you write:
<< Hi. After getting a new M Board for my XT and a load of cards, I found
that
my Power Supply's now completely dead. So, where to I start? No fan, moves
a turn or two, I know that the power connections good.
Thanks, >>
heres a quick and dirty way to test one:
if you have a hard drive, plug that into one of the power connectors, then hit
the switch. that will let you know if its working or not. this test will work,
as i use an xt supply just to run a scsi drive for my mac when i bring it out
for testing once in a while. if not working, i have several extra xt supplies
i need to get rid of. message me privately if interested.
david
"James L. Rice" <jrice(a)texoma.net> wrote:
>I've acquired a Amiga 1000 with monitor, mouse, scsi sidecar that try's
>to boot up, but after booting kickstart, it asks for the Workbench 1.2
>disk. My disk seems to be defective because the drive cycles and the
>picture of the workbench disk comes back up. Does anyone out there have
>a copy?
The symptoms you describe could also mean that your disk drive is
out of alignment. Early Amiga OSes were floppy-bound and did a lot
of gronking, which wore out a lot of drives.
- John
Jefferson Computer Museum <http://www.threedee.com/jcm>
William Donzelli:
> I do not think the Cray-1s used 10K ECL - I believe they were custom parts
> and were faster (10K gates have a delay around 2 nS). Only four types of
> chips were used in the whole beast - I think two were OR/NOR gates, one
> was a flip-flop, and the other RAM.
It is some years since I looked at the Cray 1 in the Deutches Museum in
Muenchen (Munich), but I distinctly recall seeing lots of 10xxx chips in
it. I remember I had just been given a board from the CPU of a Cyber
two-hunderd-and-something (?) that had been thrown out by Muenchen
Technical University a few months earlier, and this board has lots of
100xxx chips on it.
Philip.
I posted this a few weeks back, but noone answered, so I'll ask it
again.
There is a certain Macintosh 5400/180 at my school whose hard drive
crashed about a month and a half ago. When it tried to start, it
wouldn't really seek, just made a ticking noise and the LED would
flash. So, we took it out, ordered another one. A few days later,
it died the same death. So now we have another one. My ethics don't
allow me to just put in a hard drive knowing it will be destroyed.
What should I do? One hint is that the Macintosh is in a soundproof
booth, and is powered from the booth, which is plugged in. But, the
mac is plugged in via a "surge protector".
Ideas? Could it be bad power? Any way to check?
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In a message dated 98-04-29 16:12:26 EDT, you write:
<< > >> Hi. After getting a new M Board for my XT and a load of cards, I
found
> >>that
> >> my Power Supply's now completely dead. So, where to I start? No fan,
> >>moves
> >> a turn or two, I know that the power connections good.
>
> Could you simply be overloading it? >>
as long as its an xt power supply and not one from a 5150 pc, there should be
no problems. the 5150 was only 63watts, which was good for maybe floppy
drives. the xt has an ~80 watt power supply so there shouldnt be any danger of
overloading unless it was dodgy to begin with. ive a loaded up xt and the
power supply handles it just fine.
david
>> Hi. After getting a new M Board for my XT and a load of cards, I found
>>that
>> my Power Supply's now completely dead. So, where to I start? No fan,
>>moves
>> a turn or two, I know that the power connections good.
Could you simply be overloading it? Seem to remember original IBM XT
supplies do this when there's too much load on the system - does the
supply seem to work without anything connected to it? The fan should at
least spin then...
It's equally likely that one of the cards you've got, or the motherboard
itself is faulty in some way and is causing the supply to shut down. If
you've got a voltmeter try checking the output voltages.
Final possibility: did XT supplies have a "power good" reference line
that the motherboard tied to +12V to signal that everything was Ok?
Can't remember if this was only AT systems that provided this. If they
did it may be that your new board doesn't provide it but the power
supply expects it to (wait for someone else's words of wisdom I guess,
been a while since I've fiddled with these things - if that is the cause
though you should be able to simply tie the line to +12V and then
everything should work... :)
cheers
Jules
>
>
