STX
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| Store X Index In Memory | ||||||
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STX (Store X Index In Memory) stores the X index into a specified memory address. It is similar in function to STA and STY.
Operation
This pseudo C code shows how the STX opcode functions when it is executed.
STORE(Operand, X); // Stores the X Index Register into the memory address specified in the operand.
Addressing Modes
| Addressing Mode | Assembly Language Form | Opcode | # Bytes | # Cycles |
|---|---|---|---|---|
| Zero Page | STX Operand | 86 | 2 | 3 |
| Zero Page, Y | STX Operand, Y | 96 | 2 | 4 |
| Absolute | STX Operand | 8E | 3 | 4 |