@tubetime Yes Dana.

@tubetime Is it? Or did you make an extra small hand to use with a regular mouse?

(I cannot recall the name of the artist who made this now, someone I found on twitter back in the day.)

@tubetime Two Hand Mouse

it's got a battery because it is also a real-time clock (the Amiga 1000 doesn't have one).

@tubetime I have worked so long on serdes-based interfaces that it is shocking to see parallel ones again.

@tubetime finally, a filter i can use to image a supernova

@tubetime ::slaps top of stack:: you can stop so many photons in here

@tubetime I found an old CD from my friends' band the day before yesterday and one of their tracks is named "I stack my filters"

@kenshirriff it seems strange to think that it wasn’t until the i486 (1989) that this line of CPUs had on-chip cache. But suppose I am comparing an 8088 CPU with 28k transistors to one with over 1.1m

@kenshirriff The 8 bit bus on the Intel 8088 made the IBM PC compatible with the peripherals available for existing 8 bit PCs. DEC even introduced a "Rainbow" with both an 8 bit CPU and an 8088 in the same PC, so it could run both old & new software.

@kenshirriff Thank you for these threads. They are always so fun and interesting to read.

@tubetime

"I'm in marketing"... yes we can tell.

@tubetime Surely thats the D or ete key…

@tubetime M'dlete

@tubetime now I want a DELORT keycap.
https://www.youtube.com/watch?v=JidRZSpmIdQ

@shanselman Was MS-DOS 3.x ever released? When can we expect 5.x and 6.x?

Can we ever expect 7.x and 8.x? 😅

@shanselman cc @freedosproject

@shanselman Now we just need Windows XP… anything to help out #ReactOS become more stable!

@tubetime https://www.youtube.com/watch?v=mDhNQPt8An0

@tubetime The DS5002 was used for the suicide mcu in Gaelco arcade hardware. https://mamedev.emulab.it/haze/2017/07/17/ds5002fp-dumping/

@tubetime that's a cool logo

@tubetime both neat and an absolute preservation nightmare

@tubetime grandmother in a chip?

@tubetime Oh wow, I went through multiple comprehensive manufacturer logo lists, even a russian one, and could not find it. This is some really obscure stuff!
But yeah, I bet that it behaves like a OPA211 from TI

@tubetime it looks almost exactly like Telecom Eireann's logo, backwards.

https://www.flickr.com/photos/ajcarr/536570712/

(TE was the national telco of the Republic of Ireland)

@tubetime that sure looks like the Heathkit/Zenith product code system

@tubetime I miss the days when computer peripherals had CPUs nearly as powerful as the main computer :D.

@tubetime
Its a picture of a C64 keyboard in a 1541 floppydrive. Bad ai?

@tubetime That picture makes my brain hurt...

@tubetime There's no switches :o...

@tubetime 9 chips per column, does it have parity?

the chip pins are crimped. this is a huge pain even with the super nice desoldering tool (FR-301)

a box full of 8-bit ISA RAM cards! I picked up a few for a uhh project

@tubetime I love these posts. When I lived in the Bay Area I had no space for collecting fun old stuff, sadly and/or thankfully. I only made it to a couple of the flea markets just to look around.

@tubetime
so ... this would be the nefarious MM5204Q chip that can single chip-handedly solve ALL the world's problems. rumor had it that the chip had been secreted away due to overriding interests.

@tubetime oh, german? :)

@tubetime Had to look that up. 512x8 EPROM.

I think the smallest EPROM is worked on was 2k x 8.

Also, that die attach is very sloppy looking by modern standards.

hmm the die says it is the MM4827.

@tubetime https://www.digchip.com/datasheets/quote.php?action=search&pn=MM58274D

Real time clock.

hmm could be a dual driver or comparator. it's got two beefy output stages. I don't see any compensation capacitors so I don't think it is an op amp.

@tubetime

Do you know already or were you asking?

It’s a 16-pin EEPROM, newer MB series are/were marketed as FRAM being faster and having greater flash cycles than traditional EEPROM but given that package it’s probably first gen FRAM or last gen EEPROM.

@tubetime This is a custom chip used, for instance, in SONY VO-5850P. Below is an excerpt from the service documentation for VO-5850P:

@tubetime Somehow Sony managed to make even their chips look like designer objects of the 80s. It's beautiful! 😍

@tubetime How is it that Sony can make even their microchips look premium? lol

@tubetime Have you found any cross-reference of TA to production numbers? I only know of about half a dozen.