LD s, (nn)
Load register from memory
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| \(A \longleftarrow (nn)\) | ||||||||
| LD A, (nn) | ||||||||
| 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 3A |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \(H \longleftarrow (nn+1), L \longleftarrow (nn)\) | ||||||||
| LD HL, (nn) | ||||||||
| 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 2A |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \(dd_h \longleftarrow (nn+1), dd_l \longleftarrow (nn)\) | ||||||||
| LD dd, (nn) | ||||||||
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | dd | 1 | 0 | 1 | 1 | ||
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \(IX_h \longleftarrow (nn+1), IX_l \longleftarrow (nn)\) | ||||||||
| LD IX, (nn) | ||||||||
| 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | DD |
| 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 2A |
| 7 | nn | 0 | ||||||
| 15 | 8 | |||||||
| \(IY_h \longleftarrow (nn+1), IY_l \longleftarrow (nn)\) | ||||||||
| LD IY, (nn) | ||||||||
| 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | FD |
| 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 2A |
| 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 A, (nn)
3Annnn313 |
|
|
LD HL, (nn)
2Annnn316 |
|
|
|
| (nn) |
|
LD BC, (nn)
ED4Bnnnn420 |
LD DE, (nn)
ED5Bnnnn420 |
LD HL, (nn)
ED6Bnnnn420 |
LD IX, (nn)
DD2Annnn420 |
LD IY, (nn)
FD2Annnn420 |
LD SP, (nn)
ED7Bnnnn420 |
|
Instruction
Opcode hexSize bytesCycle count
| Memory |
Last modified November 16, 2021: Update flag rendering so it can be reused for the Z80 (06001ea)