CPU: Customised MOS Technology 6502
known as SALLY Graphics: Color Television Interface Adapter - CTIA (controls sprites) & ANTIC (controls bitmap graphics and characters)
Multiple graphics modes from 40 x 24 text modes, through 160 x 192 with 4 colours, to 320 x 192 in 2 colours.
Sound: POKEY Chip producing 4 8 bit sound channels which could be combined to produce 16 bit sound.
Memory: 16K RAM, 16K ROM.