The released binaries doesn't include any roms.
To run the emulator you will need to put roms folder into the same folder as nc2000.exe/nc2000mac.
Change:
support real-time save/load, support IrDA and UART communication.
支持即时存档。 支持红外/串口通信，可以黄金/白金对战，红外文件互传，用ftplink传文件等。
Rom Files:
link: https://pan.baidu.com/s/1Px_G4ZLpx_AN6_L7VrHnsQ?pwd=uuf2 code: uuf2
(note: the roms were collected from internet. They're shared here only for nostalgia. Don't use for any commerical purpose)