Just started working on a breakout clone for my homebrew 65C02 build. Mainly to have a go at working in the TMS9918A's Graphics II mode beyond simple demos:

As always, all source code (65C02 assembly) is available:
https://github.com/visrealm/hbc-56/tree/master/code/6502/breakout. The schematics, emulator, etc are all in the github repo too.