3/3 Digivice Ver. Revival – uses a Sonix MCU labeled "SLL86F8". Unfortunately, it appears to use flash memory, meaning the ROM cannot be read optically. archive.org/details/digivice…

2/3 Pocket Pikachu Color – the ROM die has been fully photographed, but the microcontroller architecture is unfortunately unknown (assuming it's even a general-purpose microcontroller). archive.org/details/pocket-p…

So, here are some findings: 1/3 D-Tector – uses a Sunplus SPL191 microcontroller (or something similar). The ROM die has been fully photographed. archive.org/details/d-tector

Received two packages today: a Pocket Pikachu Color and a Digivice Revival from @ElMadre6, and a D-Tector from @OKDecc. I’ll be working on these devices soon.

Puyolin (ぷよりん) LCD game has been dumped and emulated. It runs on a Holtek HT1190 4-bit microcontroller.

This is what the game looks like on a real watch: youtube.com/watch?v=gIUXOaXo…

I'm currently working on an Epson RC-20 emulator. The watch has two processors: a 4-bit one and an 8-bit Z84. I'll only emulate the Z84 program execution mode, as I won't decap the 4bit MCU of these rare watches to dump mask ROM. The video shows a Chrome T-Rex demake I once wrote

D-Power Digivice EU 1.01 has finally been dumped and emulated. Many thanks to @OKDecc for sending me the device to dump. He actually sent me two of them, because my first etching attempt wasn't successful.

Tamagotchi Mini 2017 has now been dumped and emulated. Most likely, the dump contains errors, so in the future I will try to dump another copy to verify this.

Yes, here is a close-up of the core:

Die photo of the microcontroller from a 2017 Tamagotchi Mini. The ROM image isn't good enough for automatic bit recognition, but since only ~12 kB of the 256 kB ROM is actually used, I think I can extract it entirely by hand.

I take a macro photo of an LCD display illuminated from behind, manually clean up the image, and then vectorize it using auto-tracing. Here's the result of each stage:

That's right. Here's a partial ROM of this game: dark squares are 1, and light ones are 0.

Nintendo Mini Classics Soccer (1998/2004) has now been dumped and emulated. As far as I know, this is the first Mini Classics game to be dumped. I hope I come across more games from this series. github.com/azya52/BrickEmuPy

Interestingly, there is no information on the die itself to identify the microcontroller, but fortunately, the manufacturer kindly indicated the part number on the PCB: Syntek STK55C324.

I've decapsulated another Nintendo Mini Classics game, this time Soccer from 2004. I managed to capture an image of the ROM, so it's only a matter of time before it's dumped and emulated. commons.wikimedia.org/wiki/F…

An unknown microcontroller from the Littlest Pet Shop virtual pet (McDonald's Happy Meal, 2007). commons.wikimedia.org/wiki/F…

Bandai SD Gundam Gaiden II (1985) has now been dumped and emulated. Many thanks to @MilanSK46676000 for the ROM dump and reference photos used for vectorization. LCD game donated by MikeG.

Apollo Prince & Princess has now been dumped and emulated. This virtual pet is powered by a Sunplus SPLB20 microcontroller. Thanks to @ksenia1923396 for providing a copy for dumping.