https://en.wikipedia.org/wiki/Watara_Supervision
Pierco worked on implementing this over a year ago, and had it in a decent WIP state, but he has not had time to go back to it with his work on other cores like Game & Watch. Jason has stepped up to pick up from where Pierco left off, to clean it up and try get it over the finish line. Excitingly there is now have a test build posted on the discord:
JasonA — Today at 10:58
Watara Supervision core. Added sv support via OSD. Updated to latest sys. Reverted to previous vram_addr calculation (still some vertical placement issues on some carts). Replaced 65c02 cpu with a more stable one. Thanks to @Pierco for allowing me to work a bit more on this core.
Currently there are issues with flickering in games with moving entities the cause of which is being looked into, and a few games either don't load or have issues that we don't know yet if are due to the core or are bad dumps, so further investigation is needed there. The No Intro set is the best for anyone looking to grab a pack of roms. This is an overview of what is currently working:
https://docs.google.com/spreadsheets/d/ ... 1080109513
Note: This sheet will go out of sync with the test build.
If anyone finds any issues or has feedback on the core, please post away. It's a going to be a fun wee core to have on the MiSTer, and another one that will no longer have FPGA implementation exclusive to the NT Mini. A big thanks for Pierco and Jason for working on it!