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PEA: Difference between revisions
From SnesLab
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|'''Speed''' | |'''Speed''' | ||
|+ | |+ | ||
|Stack (absolute) | |[[Stack Addressing|Stack]] (absolute) | ||
|F4 | |F4 | ||
|3 bytes | |3 bytes | ||
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!colspan="9"|Flags Affected | !colspan="9"|Flags Affected | ||
|+ | |+ | ||
|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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|} | |} | ||
'''PEA''' (Push Effective Address) is a [[65c816]] instruction that pushes a 16-bit value to the stack. This value need not actually be an address. | '''PEA''' (Push Effective Address) is a [[65c816]] instruction that pushes a 16-bit value to the stack. This value need not actually be an address. The [[stack pointer]] is decremented by two. | ||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
* [[Eyes & Lichty]] page on PEA: https://archive.org/details/0893037893ProgrammingThe65816/page/n499 | * [[Eyes & Lichty]] page 473, on PEA: https://archive.org/details/0893037893ProgrammingThe65816/page/n499 | ||
* [[Labiak]] page on PEA: https://archive.org/details/Programming_the_65816/page/n167 | * [[Labiak]] page 157 on PEA: https://archive.org/details/Programming_the_65816/page/n167 | ||
* snes9x implementation of PEA: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1631 | * snes9x implementation of PEA: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1631 | ||
* undisbeliever on PEA: https://undisbeliever.net/snesdev/65816-opcodes.html#pea-push-effective-absolute-address | * undisbeliever on PEA: https://undisbeliever.net/snesdev/65816-opcodes.html#pea-push-effective-absolute-address | ||
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[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:65c816 additions]] | [[Category:65c816 additions]] | ||
[[Category:Three-byte Instructions]] | |||
[[Category:Five-cycle Instructions]] | |||
Latest revision as of 12:28, 14 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack (absolute) | F4 | 3 bytes | 5 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
PEA (Push Effective Address) is a 65c816 instruction that pushes a 16-bit value to the stack. This value need not actually be an address. The stack pointer is decremented by two.
See Also
External Links
- Eyes & Lichty page 473, on PEA: https://archive.org/details/0893037893ProgrammingThe65816/page/n499
- Labiak page 157 on PEA: https://archive.org/details/Programming_the_65816/page/n167
- snes9x implementation of PEA: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1631
- undisbeliever on PEA: https://undisbeliever.net/snesdev/65816-opcodes.html#pea-push-effective-absolute-address