CPU: z80 - LR35902 (Opcodes: http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html)
RAM: 8KB (32KB in Color)
Similar to the Super GameBoy but this is for the Nintendo 64 and not licenced by Nintendo, I first saw this for sale in issue X of the UK Nintendo Official Magazine.
For more information:
Official device to play gameboy (including gba) games on the N64, but was not sold to the general public. You had to be a game developer or press in order to buy one from Intelligent Systems.
Similar to the Super GameBoy but this is for the Sony Playstation!