| n || 8-bit immediate || nnnnnnnn
|-
| P qq || 16-bit register pair (bc, de, hl, af) || pp qq = 00, 01, 10, 11
|-
| dd || 16-bit register (bc, de, hl/ix/iy, sp) || qq dd = 00, 01, 10, 11
|-
| r || 8-bit general purpose register (a, b, c, d, e, h, l) || rrr (or sss) = 111, 000, 001, 010, 011, 100, 101