TSX
From SnesLab
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | BA | 1 byte | 2 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| N | . | . | . | . | . | Z | . | |
TSX (Transfer Stack Pointer to X) is a 65x instruction that transfers the value of the stack pointer to the X index register.
- If X is only 8 bits wide then only the low byte of the stack pointer is transferred.
- Otherwise, all 16 bits are transferred.
TSX always takes two cycles, regardless of whether one or two bytes are transferred.
Syntax
TSX
See Also
External Links
- Eyes & Lichty, page 516 on TSX
- Labiak, page 197 on TSX
- 8.9 on MCS6500 Manual, page 122 on TSX
- B-29, lbid.
- Carr, page 276 on TSX
- Leventhal, page 3-101 on TSX
- snes9x implementation of TSX: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2353