Wikipedia has a page on it: <https://en.wikipedia.org/wiki/SWEET16 https://en.wikipedia.org/wiki/SWEET16>. It's architecturally odd because it was designed to

Wikipedia has a page on it: <https://en.wikipedia.org/wiki/SWEET16 https://en.wikipedia.org/wiki/SWEET16>. It's architecturally odd because it was designed to run on a 6502 with as small as footprint as possible (about 300 bytes of code, 32 bytes of RAM) and only did a few operations (add, sub, cmp, call, return, inc, dec, load, store, branch-on-condition).