Clojure and the Immutable Emulator

Clones is an NES emulator for the gentlman (or woman) of distinguished immutable character. A core design goal is to build an entirely functional emulator.

Is this madness? Yes.

But how many cools would it be to be able to rewind and fast forward a game through states? Eleventy.

Why would you do such a thing?

Mallory is famously quoted as having replied to the question "Why do you want to climb Mount Everest?" with the retort "Because it's there"

- quoteth the 'pedes

So... you want to join the immutability cult?

Be advised that the current performance is about 1 frame per second on a new 15" Macbook Retina. Totally playable speed.

$ lein with-profile gui run [rom]

How do I test this monstrosity?

The specs test clones' internal API, state and functioning:

$ lein spec

There are also test ROMs that exercise the entire machine.

The nestest binary can be run and verified against the known-good Nintendulator debug log:

$ lein with-profile nestest run

Blargg's CPU tests can be run headlessly and report results:

$ lein with-profile blargg run [rom]