Changes
Z80
,/* Control flow group */
|-
| jr cc,e || 001cc000 eeeeeeee || 3/2 || 12/7 (4,3,5)/(4,3) || - || - || - || - || - || - || - || - || if cc then pc += e || Conditional relative pump
cc: 00000=NZ, 00101=Z, 01010=NC, 01111=C
|-
| djnz e || 00010000 eeeeeeee || 4/3 || 13/8 (5,3,5)/(5,3) || - || - || - || - || - || - || - || - || b -= 1, if b <> 0 then pc += e || Decrement, pump non-Zero
