been looking into writing my own BASIC

https://github.com/parasmp/vic20.system-code/blob/master/vic20_rom_disassembly.txt

http://www.ittybittycomputers.com/IttyBitty/TinyBasic/DDJ1/BYOB.html

http://www.ittybittycomputers.com/IttyBitty/TinyBasic/TBuserMan.txt

may choose the arduino AVR as my platform--not sure what language to write it in yet, whether assembly or otherwise...