Emiu2 is an emulator for the Miuchiz handheld devices.
Emiu2 requires a dump of a Miuchiz handheld device's OTP (One Time Programmable) memory as well as a dump of its flash memory. These dumps can be created using Native-Miuchiz-Handheld-USB-Utilities. Existing images of both can be obtained from https://archive.miuchiz.com/root/handhelds/.
Emiu2 can also be run in the web browser and is available at emiu2.miuchiz.com. Select the OTP and flash files you'd like to load and click "Start Emulator".
To start the emulator, run emiu2 <OTP_FILE> <FLASH_FILE>. Run emiu2 --help for more options.
The implementation of the microcontroller itself is not complete or accurate, but with regard to the features the Miuchiz firmware uses, accuracy and support are extremely good.
At a high level, the emulator supports the following:
- 65C02 CPU core
- Memory bank mapping
- Video
- Audio
- Flash
- OTP (One Time Programmable memory)
- GPIO
It is possibly more useful to list the features which the Miuchiz firmware uses but which are not yet finished:
- RTC interrupts (Used for the alarm clock ingame)
- IR communication (Used to play or trade with other Miuchiz devices)
- USB communication (Used to communicate with a PC)
This software uses the typical Rust build system cargo. Get started with Rust at https://rustup.rs/.
The hosted version of emiu2 is built with wasm-pack.
Install wasm-pack with cargo install wasm-pack.
Build a release version of emiu2 with wasm-pack build --target web.
Build a release version of emiu2 with cargo build -r, or run it directly from cargo with cargo run -r -- <OTP_FILE> <FLASH_FILE>.
A demonstration on a mobile device complete with audio is available on YouTube:
