I think it is a manual indicator to help you see which ones you have used,
the idea being, if you had several and charged them all, you would flick
them all over one way, and as you used them you would flick them over to
red.... but I could be wrong! Hi tech or what?
Toshibas normally have a constant led when recharging, a flashing led
normally indicates that the batttery is knacked, although sometimes if you
completely remove the battery and leave it a while it would work.... but I
could be wrong!
I hope it helps
Mark
-----Original Message-----
From: Colan Mitchell [mailto:cdrmool@interlog.com]
Sent: 30 June 1999 11:46
To: Discussion re-collecting of classic computers
Subject: Toshiba T1200 laptop battery question
I KNOW that this would have been dealt with somewhere but can't find it so
standard apologizes are applicable.
On the little battery pack on the T1200 laptop, there is a little
switch (breaker?) that in one position is read and on the other is closed.
What the heck does it mean and what position does it go to for recharging.
I've hooked it up to a 12v adapter and the little red light on the upper
left hand corner of the laptop blinks which is what my old Sanyo would do
on a recharge. Is it the same for the Toshiba?
TIA
colan
I've got a 5110 (the small 5" monitor, no tape drive) w/basic and a 5120 w/Basic and APL (big 10" and 2 8" floppy drives).
The 5110 worked last time I tried (about five years ago, now) and the 5120 did not, but the CPU cards from the 5120 could be swapped
into the 5110 and I believe I tried it and that worked (giving you APL on the 5110).
-b
-----Original Message-----
From: Eros, Anthony <Anthony.Eros(a)COMPAQ.com>
To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu>
Date: Tuesday, June 29, 1999 1:55 PM
Subject: IBM 5100 sought
<< Apologies if this was posted twice... >>
Gang -
I know they're highly sought-after, but I'd really love to snag an
APL-capable IBM 5100 and thought I'd throw the question open...
There's something about those systems I always liked (even though I
didn't use one more than a couple of times in high school.) Is there any
chance that I might be able to tempt one of you elusive 5100 owners with
some combination of the following?
> DEC PDP-8/L
> Teletype ASR-33
Apple Macintosh Portable (with case)
> NeXTstation Turbo Color (minus monitor and sound box)
> HP 85 with a variety of ROM drawers
> HP 9825A with 8" floppy drive
>
There'd be some shipping issues, but I'd even be open to parting
with an IBM 1130 (missing keyboard, power supply and drum disk.)
Any interest?
> -- Tony Eros
Mid-Atlantic Computer History Museum
<> I've brought it up with the MPU-A installed and I
<> get flashing lights. Press the STOP switch and I
<> get solid lights. Now the weird part: When I
<> toggle the address switches and press EXAMINE,
<> here's what I get on the address lights:
<>
<> Legend: O - light off
<> X - light on
<> - - switch off
<> ^ - switch on
<>
<> Lights OOOO OOOO OOOO OOOO
<> Switches ---- ---- ---- ----
<>
<> Lights OOOO OOOO XOOO OOOO
<> Switches ---- ---- ---- ---^
Cable may be inverted, may also have a flakey switch.
If I remember right it has to have addressable memory there too.
Allison
They're not equivalent, though they share the same pinout and function with
the old National Semiconductor 8097. The 8T97 has greater current
source/sink capability, hence it is faster in some applications and can
drive a pretty stubstantial load. It was very common as a bus driver, which
was it's intended purpose. For normal TTL fanout, either part will work.
Dick
-----Original Message-----
From: Bill Sudbrink <bill(a)chipware.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Wednesday, June 30, 1999 12:56 PM
Subject: 8T97 == 74367 ??
>Are these two parts equivalent:
>
>74367AN and N8T97N
>
>Thanks,
>Bill
I'm suspicious of one of the 7405s (Hex open-collector
inverters) driving the data lines to the MPU-A. I
don't have any replacements, but I do have a handfull
of 7406s (Hex open-collector high-voltage inverters).
The pinouts in the Chip Directory look the same, only
difference by them is that the 7406 is "Maximum output
voltage is 30V". I think I'll try socketing the
suspect chip (U1 for anybody keeping score) and putting
in a 7406.
Picked three systems today for free at an auction, the guy was not after
computers and these were in his box of goods.
A Eagle Spirit XL luggable missing KB, a UNISYS PW2 Advantage just the box
no kb or monitor, and a Tandy 1000 RSX Hard Drive a nice looking unit the kb
was damaged so I tossed it. Have not yet powered any these up, will do that
this weekend. Keep Computing John
If you are planning to exhibit at the VCF, the exhibitor form is now
online. Please see http://www.vintage.org/vcf/exhibit.htm.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Don't rub the lamp if you don't want the genie to come out.
Coming this October 2-3: Vintage Computer Festival 3.0!
See http://www.vintage.org/vcf for details!
[Last web site update: 05/25/99]
-----Original Message-----
From: Sellam Ismail [mailto:dastar@ncal.verio.com]
> as far as I know, the first Apple
> ]['s serial number was 2001, so where does #2 fit into this??
I believe the machine is known colloquially, rather than literally, as
serial #2. Easier than explaining that it's serial # 2002, which is
probably the number it carries.
> That is in fact the guy.
Yup, it's been confirmed to me in private mail.
> Did the prototype Lisa sell?
Nope. The Apple I by itself was the only one of 5 computer lots that sold.
Kai
OK, here's the scoop on the outcome of today's La Salle auction.
First off, it turns out there was not one Apple 1 at auction, but two! The
lots consisted of the following:
Lot: Seller anonymous. Apple 1 computer (no serial #), keyboard, original
manual, 2 canceled checks. SOLD for $18,000 to a Captain O'Mahony of
London, England.
Lot: Seller, Jeff Raskin. 3 computers in lot. Apple 1 computer (serial #
4), Apple II computer (serial # 2), Millionth Macintosh with Plaque (one of
6). UNSOLD at a starting price of $90,000.
I believe this is the first verifiable recorded public sale of an Apple 1,
with the exception of the old Computer Bowl charity auction, which doesn't
really count.
PURE SPECULATION: The guy I bought my SWTPC 6800 from at VCF 2.0 said he had
an Apple 1 that he was going to have sold at an "auction house in the bay
area" in the coming year. I'm willing to bet that the anonymous seller was
this guy. I recall that somebody in our core community (Marvin? Doug
Coward?) knew this guy and could verify this.
Kai
please see embedded comments below.
Dick
-----Original Message-----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Tuesday, June 29, 1999 11:14 AM
Subject: Re: Article about collecting in Antique Trader.
>> In the article I claim collecting computers is like collecting money -
>> you don't have to be a banker to collect money and so you don't
>> need to be a techie to collect computers. Then I warn would be
>
>Hmmm... There are 2 ways to collect money (at least). Either you collect
>particular coins/banknotes/etc because of their historical significance.
>Or you just collect any money you can get, with a view to spending it
later.
>
>In other words you either collect money for its significance or because
>you can later exchange it for something else.
That's true, but it applies particularly to money because that's why we have
it. Even money involves a little speculation. In general, however, the
value of money varies very little with fads or changing tastes, and
relatively little over time, at least a lifetime. The value of most
"collectible" computers is not generally higher than the money it took to
buy them when they were new. In fact, I've observed that even the more
famous collectible computer stuff sold on the eBay auction doesn't go for
more than it cost new.
>The same applies (unfortunately) to computers.
. . . as it does to all other durable goods.
>I am a little concerned that articles like this further distort computer
>history by making certain machines 'collectable' (and out of the reach of
>people who would truely use them :-(), while other, possibly more
>important machines are worth next-to-nothing
If you think an eBay IMSAI computer is unreachable now, consider what it
cost in "real" money, back in the days when it was on the market, which was
back when a dollar was a DOLLAR and not just the price of a candy bar.
>You may think I exagerate, but I can get a true descendent of the Xerox
>Alto for a few pounds while the illegitimate child (aka Apple Lisa) is
>many times that figure.
>
As for why the Alto costs less than the Lisa, consider how many people have
the knowledge and resources to do anything anything even remotely useful, to
an average person, i.e. something other than creating software or meaninless
calculations. It's not really easy to get software to make the Lisa do
anything useful, either, but it's probably billons of times easier (forgive
the weak attempt to quantify something unquantifiable) than for the Alto.
The difference is between showing off what a LISA is known (to a small but
significant few) to be able to do (I even made overhead slides with one,
having hooked it to a laser printer myself), and just going in the back room
and saying OOh! and AAh! at the computer the capabilities of which are
certainly unfamiliar to me.
>
>-tony
>
