| inc s || DD/FD 00sss100 || 2 || 8 (4,4) || M1, M1 || s += 1
|-
| inc (hl) || 00110100 || 3 || 11 (4,4,3) || M1, MR, INT(1), MW || (hl) += 1
|-
| inc (ixy+d) || DD/FD 00110100 dddddddd || 6 || 23 (4,4,3,5,4,3) || M1, M1, MR, INT(5), MR, INT(1), MW || (ixy+d) += 1
|-
| dec r || 00rrr101 || 1 || 4 (4) || M1 || rowspan=4|+ || rowspan=4|+ || rowspan=4|+ || rowspan=4|+ || rowspan=4|+ || rowspan=4|V || rowspan=4|1 || rowspan=4|- || r -= 1 ||rowspan=4|Decrement
| dec s || DD/FD 00sss101 || 2 || 8 (4,4) || M1, M1 || s -= 1
|-
| dec (hl) || 00110101 || 3 || 11 (4,4,3) || M1, MR, INT(1), MW || (hl) -= 1
|-
| dec (ixy+d) || DD/FD 00110101 dddddddd || 6 || 23 (4,4,3,5,4,3) || M1, M1, MR, INT(5), MR, INT(1), MW || (ixy+d) -= 1
|-
| add a,n || 11000110 nnnnnnnn || 2 || 7 (4,3) || M1, MR || rowspan=5|+ || rowspan=5|+ || rowspan=5|+ || rowspan=5|+ || rowspan=5|+ || rowspan=5|V || rowspan=5|0 || rowspan=5|+ || a += n ||rowspan=5|Add