spcasm

spcasm is a modern assembler for the old SPC700 architecture. You can read more in the documentation.

Interactive SPC700 assembler

This page allows you to interactively compile SPC700 assembly all within your browser (the power of WebAssembly!). Compilation happens automatically.

org 0 ; Use org $0200 in real code!
; Input your code here:
loop:
nop
nop
jmp loop