Neko — Project Ii Android

This article is for educational purposes. Neko Project II is MIT-licensed open-source software. However:

Before diving into the Android version, it helps to understand the source. Neko Project II (often abbreviated as NP2) is an open-source emulator designed to replicate the hardware of the NEC PC-9801 series. This includes emulation of the classic 8086, 80286, and 486 CPUs, Yamaha FM sound chips (YM2203, YM2608), and various graphics modes (EGC, GRCG, and 16-color palettes). neko project ii android

The original Neko Project II for Windows and macOS is considered the gold standard for PC-98 emulation. It’s lightweight, incredibly accurate, and has been under continuous development for decades. The Neko Project II Android version is a direct port of this emulator to the Android operating system, bringing this accuracy to phones and tablets. This article is for educational purposes

You might ask: Why go through the trouble of emulating a 1980s Japanese PC on a touchscreen? Why it's useful:

The Android port is not a stripped-down toy. It retains most of the core functionality of the desktop version:

As an emulator translating instruction sets in real-time, CPU usage is moderate to high. The app does not aggressively throttle CPU speed automatically, meaning users should expect significant battery drain during extended sessions unless they manually limit the emulated CPU speed in settings.

Because NP2 is open source, the code is the documentation. For Android specifically, the most "citable" work is the repository itself.