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PHB: Difference between revisions
From SnesLab
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|'''Speed''' | |'''Speed''' | ||
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| | |[[Stack Addressing|Stack]] | ||
|8B | |8B | ||
|1 byte | |1 byte | ||
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!colspan="9"|Flags Affected | !colspan="9"|Flags Affected | ||
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|N | |[[Negative Flag|N]] | ||
|V | |[[Overflow Flag|V]] | ||
|M | |[[M Flag|M]] | ||
|X | |[[X Flag|X]] | ||
|D | |[[Decimal Flag|D]] | ||
|I | |[[I Flag|I]] | ||
|Z | |[[Zero Flag|Z]] | ||
|C | |[[Carry Flag|C]] | ||
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'''PHB''' (PusH data Bank register) is a [[65c816]] instruction that pushes the value of the [[data bank register]] to the stack. | '''PHB''' (PusH data Bank register) is a [[65c816]] instruction that pushes the value of the [[data bank register]] to the [[stack]]. PHB always pushes one byte. The [[stack pointer]] is decremented by one and ends up pointing directly below the byte pushed. | ||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
* [[Eyes & Lichty]] page on PHB: https://archive.org/details/0893037893ProgrammingThe65816/page/n503 | * [[Eyes & Lichty]] page 477, on PHB: https://archive.org/details/0893037893ProgrammingThe65816/page/n503 | ||
* [[Labiak]] page on PHB: https://archive.org/details/Programming_the_65816/page/n171 | * [[Labiak]] page 161 on PHB: https://archive.org/details/Programming_the_65816/page/n171 | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:65c816 additions]] | [[Category:65c816 additions]] | ||
[[Category:Push Instructions]] | |||
[[Category:One-byte Instructions]] | |||
[[Category:Three-cycle Instructions]] | |||
Latest revision as of 12:07, 14 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack | 8B | 1 byte | 3 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
PHB (PusH data Bank register) is a 65c816 instruction that pushes the value of the data bank register to the stack. PHB always pushes one byte. The stack pointer is decremented by one and ends up pointing directly below the byte pushed.
See Also
External Links
- Eyes & Lichty page 477, on PHB: https://archive.org/details/0893037893ProgrammingThe65816/page/n503
- Labiak page 161 on PHB: https://archive.org/details/Programming_the_65816/page/n171