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MICROPROCESSOR INSTRUCTION REFERENCE->TST
Test Memory, zero or minus
Compatibility: 6800, 6802, 6803, 6303R, 6303X, 6303Y
M - 00
Condition Code Register
C Reset Always
V Reset Always
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 |
| Index : | 6D | 4 | 2 | TST <exprn.>,X |
| Extend: | 7D | 4 | 3 | TST <exprn.> |