ADD (dd) without carry
Addition of memory without carry
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| \(A \longleftarrow A + (HL)\) | ||||||||
| ADD A, (HL) | ||||||||
| 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 86 |
| \(A \longleftarrow A + (IX+d)\) | ||||||||
| ADD A, (IX+d) | ||||||||
| 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | DD |
| 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 86 |
| d | ||||||||
| \(A \longleftarrow A + (IY+d)\) | ||||||||
| ADD A, (IY+d) | ||||||||
| 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | FD |
| 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 86 |
| d | ||||||||
Flags Affected
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| s | set if result negative | ||||||||
| z | set if result is 0 | ||||||||
| h | set if carry from bit 3 | ||||||||
| p/v | set if overflow | ||||||||
| c | set if carry from bit 7 |
Opcode Matrix
| (HL) | (IX+d) | (IY+d) | |
|---|---|---|---|
| A |
ADD A,(HL)
8617 |
ADD A,(IX+d)
DD86nn319 |
ADD A,(IY+d)
FD86nn319 |
|
Instruction
Opcode hexSize bytesCycle count
| Memory |
Last modified November 16, 2021: Split ADD up to allow flags to be defined (7fea8b1)