Table of Contents Previous topic Next topic
MICROPROCESSOR INSTRUCTION REFERENCE->TSTA
Test Accumulator A, zero or minus
Compatibility: 6800, 6802, 6803, 6303R, 6303X, 6303Y
A - 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 |
| Implied: | 4D | 1 | 1 | TSTA |