On: 6502 SpASM (6502 Spreadsheet Assembler and Linker)

[ece]

Now, something to program a W65C816S[1] with, and you can go from spreadsheet to real hardware.

[1] W65C816S is the 6502-derivative ISA used in the SNES, the modern version you can still buy has an 6502 emulation mode:

https://en.wikipedia.org/wiki/MOS_Technology_6502#Variations...

https://www.mouser.com/new/western-design-center/wdcw65c816s...