I got a Toshiba T1200, which has a bad screen, and a dead CMOS battery, and I thought the hard drive was broken too...

but I rebooted it and heard a KTHUNK and a really loud spin-up noise and holy shit, the hard drive works!
and it still has files on it. the newest date is January 1994.
It's a 21mb hard drive, with ~37k of bad sectors.

This fucker is never going to spin up again, so I better go find some serial cables and copy shit off now.
The backlight is fucked so I'm shining a flashlight on it.
without it, it looks like this.
FastLynx has a cool mode where you can use it between two DOS machines and you only have to install it on one of the machines, it bootstraps itself over the serial port to the one without it.
dang it. They're communicating enough to bootstrap, but not enough to actually work in fastlynx mode
ah-ha! It's this "Serial Accelerated (7-wire) Mode".
Turning that off makes it work.
COPYING! starting on the most useless files
I stopped it and reconfigured the serial port.
even with only 21mb, 9600 baud is way too slow
huh, gnu manuals? didn't expect to see that on a DOS machine not touched since 1994
and it's done copying! you can go to your rest, poor old hard drive.
the next computer I'm gonna work on is... another T1200!
This one is fully dead. No error blinks, nothing.
It's a surprisingly simple machine inside. Not super-cramped like a lot of portables.
it's got a cmos battery and a little speaker over here
Which is weird because the system has another battery over here.
neither of which are the main battery!
This one is also the same sort of setup where it's a floppy drive and a hard drive.
You could also get this in a dual-floppy model.
This little add-on here is the hard drive controller.
This was a weird thing. It kinda looks like it'd be a trackpad but it's on the bottom and this machine has no trackpad.
Turns out: it's RAM!
The whole motherboard
The floppy drive is by Toshiba, it's an ND-352S-A, or FDD4271G0W, or even a JAH1058939.
And it looks like a normal floppy drive but it's got the wrong connector. 26-pin IDC, for some reason.
The hard drive is even weirder.
It's by JVC! Yes, that JVC.
It's a JD3824G01-4.

And it has NO DEFECTS, woo!
And it turns out it uses the same 26-pin connector as the floppy drive.
the bottom of the hard drive is interesting
It's some kind of self-parking system.
This one also has something not in the other one:
A modem add-on!
The bottom.
That chip has an interesting pinout.
The sides have 10 pins, but they're arranged as two sets of 5, with a gap.
It's an HD637b05v0f, which is an 8-bit Hitachi microcontroller
Anyway I was hoping to combined these two into one machine, maybe even image the other hard drive?
But sadly I can't get machine 1 to power on anymore.
So I currently have two dead machines.
and I think that's all I'm gonna work on for tonight, so I'll have to hopefully pick this up some other time.
I have a third one in storage, but it makes these two look like they're in good shape
ooh, found a service manual:
https://t.co/E1I5AAzVuh
BTW a fun thing about this system is that the back of the power supply has two power switches.
One of them is for the system, and the other one is for the hard drive!
you can seriously boot up the laptop with the hard drive turned off. it's amazing.
also it has a function called "hard ram", which is why it has so many batteries.
You can set it up so that the expanded RAM is battery-backed, so you can set up a ramdisk that is maintained while the system is off.
Annoyingly the service manual doesn't explain the floppy or hard drive connectors.
It explains random pinouts for things like the display controller, but no hard drive/floppy pinouts.
oh neat. u/ConventionalMemories on retrobattlestations has built a CF-card adapter for these laptops, but it plugs into the expansion slot instead of the hard drive port.

https://t.co/WZXFPtnkGA

More from foone

Everyone likes to forget this episode just because it's terrible, but we were really sleeping on inherent comedy in a unfreezing an investor 300 years in the future and having them discover we've transitioned to a moneyless post-scarcity utopia.


it's like a classic twilight zone episode.

in fact, it IS a twilight zone episode.
The Rip Van Winkle Caper, Season 2, episode 24.
Four criminals steal a million dollars of gold bars, then put themselves in suspended animation for a hundred years to hide from the law.

they wake up, then start killing each other from mistrust, then the last one dies in the desert, as he offers a gold bar to the driver of a passing car, asking for water and a ride into town

the confused driver walks back to his car with the bar, and his wife asks what the gold bar is.
he says something like "It's gold... they used to use this for money, before we figured out a way to manufacture it."
He tosses it away, and drives off.

More from Tech

The YouTube algorithm that I helped build in 2011 still recommends the flat earth theory by the *hundreds of millions*. This investigation by @RawStory shows some of the real-life consequences of this badly designed AI.


This spring at SxSW, @SusanWojcicki promised "Wikipedia snippets" on debated videos. But they didn't put them on flat earth videos, and instead @YouTube is promoting merchandising such as "NASA lies - Never Trust a Snake". 2/


A few example of flat earth videos that were promoted by YouTube #today:
https://t.co/TumQiX2tlj 3/

https://t.co/uAORIJ5BYX 4/

https://t.co/yOGZ0pLfHG 5/

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