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PHD: Difference between revisions
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'''PHD''' (PusH Direct Page) is a [[65c816]] instruction that pushes the value of the [[direct page register]] onto the [[stack]]. The high byte is pushed before the low byte. | '''PHD''' (PusH Direct Page) is a [[65c816]] instruction that pushes the value of the [[direct page register]] onto the [[stack]]. The high byte is pushed before the low byte. The [[stack pointer]] is decremented by two. | ||
=== See Also === | === See Also === | ||
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[[Category:65c816 additions]] | [[Category:65c816 additions]] | ||
[[Category:One-byte Instructions]] | [[Category:One-byte Instructions]] | ||
[[Category:Four-cycle Instructions]] | |||
Latest revision as of 12:04, 14 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack | 0B | 1 byte | 4 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
PHD (PusH Direct Page) is a 65c816 instruction that pushes the value of the direct page register onto the stack. The high byte is pushed before the low byte. The stack pointer is decremented by two.
See Also
External Links
- Eyes & Lichty page 478, on PHD: https://archive.org/details/0893037893ProgrammingThe65816/page/n504
- Labiak page 162 on PHD: https://archive.org/details/Programming_the_65816/page/n172
- snes9x implementation of PHD: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1786