PER: Difference between revisions

Revision as of 22:31, 27 June 2024


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.

External Links

Eyes & Lichty page 475, on PER: https://archive.org/details/0893037893ProgrammingThe65816/page/n501
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

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 '''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.
 === See Also ===