@tubetime telephony stuff? Edit: no, does not really match ss5.

Decoding artifacts due to the internal gates?

@tubetime Would have been extra funny if they just had exchanged 11 and 12 codes!

@tubetime I remember some old Skee-Ball machines displaying "HEL" on the score counter and "P" on the balls remaining digit to indicate that they had run out of tickets and still owed some to the player

@tubetime I had to look up what that was, and... I guess I should have guessed, but still, weird packaging!

@tubetime
Initial thought: only 408 pages? That's shorter than I expected.

Subsequent thought: it's part one of three, selected through the sidebar thingy. Blimey!

(So many amazing illustrations...)

@tubetime
*loudest produced subsonic jet airliner

There were several louder aircraft.
Definitely the Thunderscreech
Almost certainly the Tu-95 and Tu-114
Maybe the Cessna Tweet

@tubetime man, this kind of stuff should be required for all software systems…

Don't modern mobile SoC packages do the same thing but as BGA and for a RAM chip?

@tubetime

Fairchild "borrowed" a microprocessor design from a typewriter company 🤷‍♂️

Some brief history here: https://www.eejournal.com/article/a-history-of-early-microcontrollers-part-6-the-fairchild-f8-and-mostek-mk3870/

@tubetime regular ceramic, or the toxic high heat dissipation military-grade stuff?

@tubetime It's so that it's more convenient to sharpen knives on them!

@tubetime almost thought that was a z8000

@tubetime Rebadged 8051! Everybody drink!

j/k, I have no idea.

@tubetime This is a weird one. Only pops up with a lot of aviation related hits, but NOTHING specific, let alone a spec sheet or something.

Edit: Found something on a Russian parts site where it is listed under i/o relay modules.

@tubetime how was an Intel 80186 chip packaged?

@tubetime TI — we can even make gold rust!(tm)

@tubetime IMP-48 and SMP/80 seems interesting 70‘s home computer monitor stuff.

@tubetime you realise the world will end because each and every one of those hasn’t got something covering the windows.

@tubetime
Wouldn't it have been better to cut the pin on the component side, and bend it up to attach the signal wire to?

@tubetime "Smallest coaxial"

@tubetime I'd just have cut those two little traces left and right, or is it connected to grnd on multiple layers?

Marc has a video about his technique. i tried it with one pen but it's a bit labor intensive, and a commenter on his video found a better way!

https://www.youtube.com/watch?v=h-oj4HrTH14

@tubetime Philip Freidin modifies a pilot? pen that happens to fit almost exactly. IIRC he takes a little shave off them in a lathe. Not sure what exact pen he uses. I suspect that gives you a lot longer use time, but then the long pen won't work on a carousel.

@tubetime know of a good source on how hook one up to a modern computer? I have a big old HP plotter but I’m not really sure where to start

@tubetime And we never recovered! (I say, as a person who first joined the Internet via AOL.)

@tubetime this is far worse, devoid of any value whatsoever, at least with AOL, you got tons of free floppies.

@tubetime Today's date is September the 11,161st, 1993.

@tubetime is it not... shorted through the calipers, when held like that?

well, you probably only did it for a moment

@tubetime 🙀🤯

@tubetime I was just wondering about this a couple of days ago!

@tubetime amazing. I spent a little time on that myself a while back

@tubetime What a nice rabbit hole! I found that you can download some Mainframe music as mp3 from here for free.
http://mainframe-music.info/mainframe_music_mp3s.html

@tubetime well, here goes nothing

to get the Amiga to work with high density disks, the Commodore engineers took a little short cut and just spin the drive at half the normal RPM (150 instead of 300). this keeps the data rate the same, allowing the custom chip to remain unchanged.

@tubetime holy shit that sounds really cool I don't even own an Amiga tho...

@tubetime At least you're not this desperate yet:

@tubetime the solution is to get more breadboards. You never have enough for a computer project.

@tubetime breadplex

@tubetime I expect the Army received many notes from lonely radar technicians asking for Ms. "Jot down the dope" contact info. 🤷‍♂️

@tubetime

RETVRN

@tubetime I wish there was stuff like this near me. Looks like it would be so much fun.

@tubetime Having the first flea on DST day is very on-brand for an event that starts notoriously early in the morning.

@tubetime Added the upcoming ones to my calendar in hopes of finally checking this out sometime.

(2)

there's something weird about the markings on the bottom of the chip

@tubetime this is close to @NanoRaptor level shitposting too

@tubetime Moto undoubtably made custom chips for specific customers and wouldn’t have published docs on them. Perhaps there might be public info on part number ranges that they used for customer chips, but perhaps not. Could be interesting to reverse engineer.

@tubetime a variant of the 4055? :ablobthinkingeyes:

i cracked it open and this is what the die looks like. some sort of memory array, it could be SRAM but who knows.

@tubetime idk what it is but it looks oddly cute and i just don't know why

silly little goober of a chip uwu

@tubetime Backing data out of a 'display a/d converter' like the ICL7106?

@tubetime An oddball thing to use this is to read data from video signals that are either generated by a camera pointing precisely at a 7 segment display, or one of those early "consumer" OSD chips that use 7 segments.

@tubetime sometimes that's all you need to make one