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| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 00 |
| NOP | |
|---|---|
| OP |
NOP
0014 |
|
Instruction
Opcode hexSize bytesCycle count
| Special |
\(A \longleftarrow \overline{A}\)
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 2F |
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| h | set | ||||||||
| n | set |
| CPL | |
|---|---|
| OP |
CPL
2F14 |
|
Instruction
Opcode hexSize bytesCycle count
| Register |
\(A \longleftarrow 0 - A\)
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 44 |
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| s | set if result is negative | ||||||||
| z | set if result is 0 | ||||||||
| h | set if borrow from bit 4 | ||||||||
| p/v | set if Accumulator was 0x80 before operation | ||||||||
| n | set | ||||||||
| c | set if Accumulator was not 0x00 before operation |
| NEG | |
|---|---|
| OP |
NEG
ED4424 |
|
Instruction
Opcode hexSize bytesCycle count
| Register |
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 76 |
| HALT | |
|---|---|
| OP |
HALT
7614 |
|
Instruction
Opcode hexSize bytesCycle count
| Special |
\(CY \longleftarrow \overline{CY}\)
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 3F |
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| h | previous carry is copied | ||||||||
| c | set if C was 0, reset if C was 1 |
| CCF | |
|---|---|
| OP |
CCF
3F14 |
|
Instruction
Opcode hexSize bytesCycle count
| Register |
\(CY \longleftarrow 1\)
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 37 |
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| h | reset | ||||||||
| n | reset | ||||||||
| c | set |
| CPL | NEG | CCF | SCF | |
|---|---|---|---|---|
| OP |
CPL
2F14 |
NEG
ED4424 |
CCF
3F14 |
SCF
3714 |
|
Instruction
Opcode hexSize bytesCycle count
| Register |
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|
| \(IFF \longleftarrow 0\) | |||||||
| DI | |||||||
| 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 |
| \(IFF \longleftarrow 1\) | |||||||
| EI | |||||||
| 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| EI | DI | |
|---|---|---|
| OP |
EI
FB14 |
DI
F314 |
|
Instruction
Opcode hexSize bytesCycle count
| Interrupt |
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | ED |
| 0 | 1 | 0 | 1 | 1 | 0 | |||
Note: Only modes 0, 1 and 2 are valid for IM n.
| IM0 | IM1 | IM2 | |
|---|---|---|---|
| OP |
IM0
ED4628 |
IM1
ED5628 |
IM2
ED5E28 |
|
Instruction
Opcode hexSize bytesCycle count
| Interrupt |
\(@\)
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 27 |
| Flags |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| z | Set if Accumulator is 0 | ||||||||
| h | Varies | ||||||||
| p/v | Set if Accumulator parity is even, reset if odd | ||||||||
| c | Varies |
| DAA | |
|---|---|
| OP |
DAA
2714 |
|
Instruction
Opcode hexSize bytesCycle count
| Register |