LD (nn), s
Store register into memory via address
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| \((nn) \longleftarrow A\) | ||||||||
| LD (nn), A | ||||||||
| 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 32 |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \((nn+1) \longleftarrow dd_h, (nn) \longleftarrow dd_l\) | ||||||||
| LD (nn), dd | ||||||||
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | dd | 0 | 0 | 1 | 1 | ||
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \((nn+1) \longleftarrow H, (nn) \longleftarrow L\) | ||||||||
| LD (nn), HL | ||||||||
| 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 22 |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \((nn+1) \longleftarrow IX_h, (nn) \longleftarrow IX_l\) | ||||||||
| LD (nn), IX | ||||||||
| 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | DD |
| 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 22 |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \((nn+1) \longleftarrow IY_h, (nn) \longleftarrow IY_l\) | ||||||||
| LD (nn), IY | ||||||||
| 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | FD |
| 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 22 |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| Value | dd |
|---|---|
| 00 | BC |
| 01 | DE |
| 10 | HL |
| 11 | SP |
Flags Affected
| None. |
Opcode Matrix
| A | BC | DE | HL | IX | IY | SP | |
|---|---|---|---|---|---|---|---|
| (nn) |
LD (nn), A
32nnnn313 |
|
|
LD (nn), HL
22nnnn316 |
|
|
|
| (nn) |
|
LD (nn), BC
ED43nnnn420 |
LD (nn), DE
ED53nnnn420 |
LD (nn), HL
ED63nnnn420 |
LD (nn), IX
DD22nnnn420 |
LD (nn), IY
FD22nnnn420 |
LD (nn), SP
ED73nnnn420 |
|
Instruction
Opcode hexSize bytesCycle count
| Memory |
Last modified November 16, 2021: Update flag rendering so it can be reused for the Z80 (06001ea)