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PEA: Difference between revisions
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''' | {| class="wikitable" style="float:right;clear:right;width:40%" | ||
!colspan="8"|Basic Info | |||
|+ | |||
|'''Addressing Mode''' | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''Speed''' | |||
|+ | |||
|[[Stack Addressing|Stack]] (absolute) | |||
|F4 | |||
|3 bytes | |||
|5 cycles | |||
|} | |||
{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!colspan="9"|Flags | !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. The [[stack pointer]] is decremented by two. | |||
=== See Also === | |||
* [[PER]] | |||
* [[PEI]] | |||
=== 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 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[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