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: