Instruction Set
Table
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| Effect on | Address Mode | Opcode | Operand | Cycles | |||||
Source | Operation | Description |
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CLR opr |
| M ← $00 |
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| DIR | 3F | dd | 5 | |||||
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CLRA |
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| A ← $00 |
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| INH | 4F |
| 3 | ||||
CLRX | Clear Byte |
| X ← $00 | — | — | 0 | 1 | — | INH | 5F |
| 3 | ||||
CLR opr,X |
| M ← $00 |
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| IX1 | 6F | ff | 6 | |||||
CLR ,X |
| M ← $00 |
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| IX | 7F |
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CMP #opr |
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| IMM | A1 | ii | 2 | |
CMP opr |
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| DIR | B1 | dd | 3 | |
CMP opr | Compare Accumulator with Memory Byte |
| (A) – (M) | — | — | ↕ | ↕ | ↕ | EXT | C1 | hh ll | 4 | ||||
CMP opr,X |
| IX2 | D1 | ee ff | 5 | |||||||||||
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CMP opr,X |
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| IX1 | E1 | ff | 4 | |
CMP ,X |
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| IX | F1 |
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COM opr |
| M ← (M) = $FF – (M) |
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| DIR | 33 | 5 | ||||||
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COMA |
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| = $FF – (A) |
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| INH | 43 |
| 3 | |||
| A ← (A) |
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COMX | Complement Byte (One’s Complement) | X ← | (X) | = $FF – (X) | — | — | ↕ | ↕ | INH | 53 |
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COM opr,X |
| M ← | (M) | = $FF – (M) |
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| IX1 | 63 | ff | 6 | |||
COM ,X |
| M ← | (M) | = $FF – (M) |
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| IX | 73 |
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CPX #opr |
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| IMM | A3 | ii | 2 | |
CPX opr |
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| DIR | B3 | dd | 3 | |
CPX opr | Compare Index Register with Memory Byte |
| (X) – (M) | — | — | ↕ | ↕ | ↕ | EXT | C3 | hh ll | 4 | ||||
CPX opr,X |
| IX2 | D3 | ee ff | 5 | |||||||||||
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CPX opr,X |
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| IX1 | E3 | ff | 4 | |
CPX ,X |
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| IX | F3 |
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DEC opr |
| M ← (M) – 1 |
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| DIR | 3A | dd | 5 | |||||
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DECA |
| A ← (A) – 1 |
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| INH | 4A |
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DECX | Decrement Byte | X ← (X) – 1 | — | — | ↕ | ↕ | — | INH | 5A |
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DEC opr,X |
| M ← (M) – 1 |
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| IX1 | 6A | ff | 6 | |||||
DEC ,X |
| M ← (M) – 1 |
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| IX | 7A |
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EOR #opr |
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| IMM | A8 | ii | 2 | |
EOR opr |
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| DIR | B8 | dd | 3 | |
EOR opr | EXCLUSIVE OR Accumulator with Memory | A ← (A) ⊕ (M) | — | — | ↕ | ↕ | — | EXT | C8 | hh ll | 4 | |||||
EOR opr,X | Byte | IX2 | D8 | ee ff | 5 | |||||||||||
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EOR opr,X |
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| IX1 | E8 | ff | 4 | |
EOR ,X |
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| IX | F8 |
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INC opr |
| M ← (M) + 1 |
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| DIR | 3C | dd | 5 | |||||
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INCA |
| A ← (A) + 1 |
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| INH | 4C |
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INCX | Increment Byte | X ← (X) + 1 | — | — | ↕ | ↕ | — | INH | 5C |
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INC opr,X |
| M ← (M) + 1 |
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| IX1 | 6C | ff | 6 | |||||
INC ,X |
| M ← (M) + 1 |
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| IX | 7C |
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JMP opr |
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| DIR | BC | dd | 2 | |
JMP opr |
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| EXT | CC | hh ll | 3 | |
JMP opr,X | Unconditional Jump | PC ← Jump Address | — | — | — | — | — | IX2 | DC | ee ff | 4 | |||||
JMP opr,X |
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| IX1 | EC | ff | 3 | |
JMP ,X |
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| IX | FC |
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General Release Specification |
| MC68HC05RC16 — Rev. 3.0 |
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98 | Instruction Set | MOTOROLA |