I have the main unit (B).
type computer
country UK
year 1986
os basic
cpu Z80A
speed 3.54 MHz
ram 128 KB
rom 64 KB
graphic 256×192
colors 8
sound 3 channels, 8 octaves
storage built-in tape
ports expansion, tv, cassette, printer, rs323/midi, aux, rgb, two joysticks