Atari 1200XL

I have the main unit.

type computer
country USA
year 1982
os Atari OS in rom
cpu MOS 6502C
speed 1.79MHz
ram 64KB
rom 16KB
graphic 320 x 192 (16×16)
colors 256
sound 4 voices, 3.5 octaves
ports RF, cartridge, serial I/O, two joystick