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PER
From SnesLab
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack (PC Relative Long) | 62 | 3 bytes | 6 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |
PER (Push pc RElative indirect Address) is a 65c816 instruction that pushes a 16-bit sum to the stack. The addends are:
- the program counter after it has been incremented to point to the instruction following PER, and
- the 16-bit displacement following the PER opcode.
The high byte of the sum is pushed before the low byte.
No flags are affected. Neither the program bank register or program counter are modified either.
Syntax
PER label
See Also
External Links
- Eyes & Lichty page 475, on PER: https://archive.org/details/0893037893ProgrammingThe65816/page/475
- Labiak page 159 on PER: https://archive.org/details/Programming_the_65816/page/n169
- snes9x implementation of PER: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1685
- undisbeliever on PER: https://undisbeliever.net/snesdev/65816-opcodes.html#per-push-effective-pc-relative-indirect-address
- Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.8.1