POP (SPC700): Difference between revisions

Revision as of 19:19, 6 July 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Accumulator	AE	1 byte	4 cycles
Stack	CE	1 byte	4 cycles
Stack	EE	1 byte	4 cycles
Stack	8E	1 byte	4 cycles


Flags Affected
Operand is the PSW?	N	V	P	B	H	I	Z	C
yes
no	.	.	.	.	.	.	.	.

POP is an SPC700 command that pops a byte from the stack, pulling it into a register. The target register can be:

When the program status word is the operand, all the flags are naturally affected as that is the register they live in. Otherwise, no flags are affected.

References

Table C-17 in Appendix C-9 of Book I of the official Super Nintendo development manual

@@ Line 69: / Line 69: @@
 * the [[program status word]]
-When the [[program status word]] is the operand, all the flags are naturally affected as that is the register they live in.
+When the [[program status word]] is the operand, all the flags are naturally affected as that is the register they live in.  Otherwise, no flags are affected.
 === See Also ===