Releasing in December 1990 for both JP and the USA, the TurboExpress is quite simply a portable conversion of NEC's somewhat successful TurboGrafx-16 home console. Because of this, it's specifications are mostly the same as this aforementioned system, barring the obvious “portable” conversion that includes a 400×270 color screen. Of course, being an entire console in a handheld body made the TurboExpress' have a particularly mediocre battery life, to the point of effectively failing in the market. It seems that at this time, everyone cared about battery life over anything else… for good reason

https://en.wikipedia.org/wiki/TurboExpress

- conio library functions work; - contiki crashes :(

Doesn’t fully work, but is the only OS of any sort available for the TurboGrafx-16/PC Engine. Since the TurboExpress is highly compatible with the TurboGrafx, it can be assumed this will work.

http://hitmen.c02.at/html/tools_contiki.html

https://github.com/adamdunkels/contiki-1.x/tree/master/contiki-pcengine

Whether these emulators support operating systems for these computers is unknown; it must be looked into further. PCs without meaningful OSes are not included.

CHIP-8 – chipce8

https://github.com/trapexit/chipce8