Changes
Z80
,/* Letter O */
| out (c),R || 11101101 01rrr001 || 4 || 12 (4,4,4) || - || - || - || - || - || - || - || - || ((c)) := R
|-
| out (c),0 || 11101101 01110001 || 4 || 12 (4,4,4) || - || - || - || - || - || - || - || - || ((c)) := 0 (only 255 on NMOS CMOS CPU)
|-
| outd || 11101101 10101011 || 5 || 16 (4,5,3,4) || + || + || + || X || + || X || X || X || tmp := (hl), ((c)) := tmp, hl -= 1,
