Wow, thanks a lot for the info! Could you clarify whether someone has already decapped and examined the PP Color's MCU, or where this information came from?

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

Unfortunately, it uses an unknown microcontroller.

Yes, unfortunately :( I still prefer broken or battered units – it doesn't feel as bad breaking them.

Great work! Is this a public site?

If you manage to send a package to Russia, I would certainly be happy to receive it.

Indeed, the controls and the "peripherals" are very similar. I wonder if there is a connection between them.

No, they will all be broken beyond repair :(

Thanks! Dumping all three devices won't be easy, but I hope something works out.

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.

Thanks for helping me debug it!

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

Кто вообще захочет играть в новый супер марио на двух экранах.

It's great that someone else is developing for this watch, too! By the way, I also got into more or less serious assembly programming because of this watch.

This watch is unique in that it can run programs loaded onto it, which is what initially piqued my interest. There are a few other models I'm interested in, like the Casio VDB-1000 and Seiko RC-1000, but I don't think I'll ever get my hands on one to reverse engineer.

Now I understand what you mean. I've seen a few such projects, but I don't think I've seen anything systematic.