The original Amstrad notepad NC100 emulator was written by Russell Marks. He just released a new version : v1.3 whose main features are :
- new SDL2-based version
- NC150 support
- NC200 floppy disk support (using John Elliott's lib765)
- everyone being 21 years older than the last time he did a release
You can of course use the native ROM of a notepad or use ZCN also by Russell Marks at v1.3 (with a fix if you use the format command). It should also be possible to use CP/Mish by David Given thanks to the NC200 floppy drive emulation.