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PHA: Difference between revisions
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* 8.5 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n136 page 117] on PHA | * 8.5 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n136 page 117] on PHA | ||
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n280 page 267] on PHA | * [[Carr]], [https://archive.org/details/6502UsersManual/page/n280 page 267] on PHA | ||
* [[Leventhal]] | * [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n130 page 3-81] on PHA | ||
[[Category:ASM]] | [[Category:ASM]] | ||
Revision as of 23:31, 7 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack (Push) | 48 | 1 byte | 3 cycles* | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
PHA (PusH Accumulator) is a 65x instruction that pushes the value in the accumulator to the stack. If the accumulator is 16 bits wide, the high byte is pushed first. The stack pointer is decremented.
No flags are affected.
Syntax
PHA
Cycle Penalty
- PHA takes one extra cycle if the accumulator is 16 bits wide.
See Also
External Links
- Eyes & Lichty, page 476 on PHA
- Labiak, page 160 on PHA
- 8.5 on MCS6500 Manual, page 117 on PHA
- Carr, page 267 on PHA
- Leventhal, page 3-81 on PHA