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MICROPROCESSOR INSTRUCTION REFERENCE->SUBD
Subtract Memory from double accumulator
Compatibility: 6803, 6303R, 6303X, 6303Y
A:B - M:(M+1) -> A:B
Condition Code Register
C Set if carry generated, else cleared
V Set on overflow, else cleared
Z Set if result zero, else cleared
N Set if result negative, else cleared
I Not affected
H Not affected
| Addressing mode | op | cyc | bytes | Assembler syntax |
| Immed.: | 83 | 3 | 3 | SUBD #<exprn.> |
| Direct: | 93 | 4 | 2 | SUBD <exprn.> |
| Index : | A3 | 5 | 2 | SUBD <exprn.>,X |
| Extend: | B3 | 5 | 3 | SUBD <exprn.> |