A Game Boy emulator for the browser written in CoffeeScript.
Coffee Boy currently includes a complete disassembler and a mostly complete, very accurate, CPU core. Some games run, albeit with tons of glitches - mostly graphical.
With CoffeeScript installed, run cake build to see available tasks. cake server starts listening at http://localhost:3000. You'll need to find your own bootloader ROM and copy it to /www/ROMS/DMG_ROM.bin, your game ROM should be copied to /www/ROMS/ROM.gb.
Blargg's test ROMs are a good indicator of an emulator's accuracy with most emulators failing some tests. Coffee Boy's CPU core already performs better than a large majority of emulators.
Pass: 01-special
Fail: 02-interrupts
Pass: 03-op sp,hl
Pass: 04-op r,imm
Pass: 05-op rp
Pass: 06-ld r,r
Pass: 07-jr,jp,call,ret,rst
Pass: 08-misc instrs
Pass: 09-op r,r
Pass: 10-bit ops
Pass: 11-op a,(hl)