azya @OneBitOnePixel

Researching vintage LCD Games. Creating games and stuff for retro devices. https://t.co/XgJBjzMwxU github.com/azya52 Joined September 2023

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azya @OneBitOnePixel

7 days ago

@dmitrygr If you can send it to Russia, I could try to dump it, although 128 KB of ROM still makes me a bit nervous :)

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In this great article, Dmitry shares a link to the GPLB3x documentation. When I tried searching for it myself, I couldn't find anything other than superficial datasheets. While my Tamagotchi V3 emulator is already generally working, this doc will help make it much more accurate.

Dmitry Grinberg @dmitrygr

3 weeks ago

New article: "Preserving Pixter" - a complete reverse engineering, emulation, and preservation of all things Pixter by @FisherPrice news.ycombinator.com/item?id=480918…

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azya @OneBitOnePixel

2 weeks ago

@MameHaze I think they use an identical instruction set.

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azya @OneBitOnePixel

a month ago

@ksenia1923396 Спасибо большое!

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azya @OneBitOnePixel

2 months ago

I decapsulated the Tamagotchi Connection V3. The microcontroller is a Sunplus again, specifically an SPLB32. The etching went well, but there's a major issue: the ROM is a whopping 512KB. That's a lot, my previous maximum was 64KB.

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azya @OneBitOnePixel

a month ago

@SakamotoNeko13 Hi, sorry, but "Only Premium users can send Direct Message requests to people that don't follow them."

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azya @OneBitOnePixel

3 months ago

McDonald's Chicken Nugget Tetris (2023) has now been dumped and emulated. This is a significant achievement for me, as the game's microcontroller is quite modern, and tackling something like this was beyond my reach until now.

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azya @OneBitOnePixel

a month ago

@digital404x5 Thanks! Glad you're enjoying it

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azya @OneBitOnePixel

a month ago

And it even works! Still a lot to do, though.

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azya @OneBitOnePixel

a month ago

Some progress

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azya @OneBitOnePixel

a month ago

@MameHaze I also had to use Dash etching, since it uses implant ROM.

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azya @OneBitOnePixel

a month ago

@blender2763 It depends on the type of ROM. Some, like the SPLB32, cannot be optically read without additional etching.

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azya @OneBitOnePixel

2 months ago

@blender2763 Could you clarify what exactly you're interested in regarding reading ROM from photos? So far, the most modern device I've worked with was a Generalplus MCU from the mid-2010s, so I think that in theory it's possible to read almost anything, it's just a matter of effort

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Nikolay Gubanov @PxlDvl

2 months ago

О, у нас тут единение с бразильскими братьями? Мне кажется нас также объединяет и любовь к ретро играм. Покажите свои коллекции! Может у кого-то сохранились игры Tec Toy или... Zeebo? У меня есть вот такая копия бразильской Battletoads!

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azya @OneBitOnePixel

2 months ago

@DaizuSabusabu It's just low bit-depth, low sample-rate audio. In theory, the microcontroller can produce better sound, but ROM size limits force developers to compromise.

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azya @OneBitOnePixel

2 months ago

@ksenia1923396 Aside from some differences in the code, this virtual pet lets you select a 10th character (despite the "9 in 1" label on the shell). The Super Gyaoppi also has one, but it's not selectable due to a software limitation.

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azya @OneBitOnePixel

2 months ago

I've added emulations of two more late-90s virtual pets based on the same program: Super Gyaoppi 9-in-1 and its slightly modified version in a big cat head-shaped case (donated by @ksenia1923396). Both run on a Sunplus SPLB20 MCU.

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azya @OneBitOnePixel

2 months ago

Some areas of the ROM are completely unreadable, so creating a full dump isn't possible, but I was at least able to see the sprites stored in the ROM

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azya @OneBitOnePixel

2 months ago

Last summer, @OKDecc sent me a D-Power Digivice for decapsulation. I couldn't get good dash etching results back then, and I didn't have a proper lens for photography, so I've only just returned to it now. I published photos of the board, die, and ROM archive.org/details/bandai…