Sorry to double post. But, before anyone else asks.. SG-1000 support doesn't make Sega Master System or Mega Drive support much easier.
In particular I had a fever dream of using CVBasic to make z80 based Mega Drive games. But, although the MD has the Zilog Z80 and SN76489.. well, the closest video mode supported is the SMS VDP mode 4. So, if I took an SMS flash cart and put it on a power base converter the best that would happen is sound.
https://segadoes.wordpress.com/2016/04/25/power-base-converter/