We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
RETI (SPC700): Difference between revisions
From SnesLab
(subroutine/return category) |
|||
(6 intermediate revisions by the same user not shown) | |||
Line 7: | Line 7: | ||
|'''Speed''' | |'''Speed''' | ||
|+ | |+ | ||
| | |[[Stack Addressing | Stack]] | ||
|7F | |7F | ||
|1 byte | |1 byte | ||
Line 14: | Line 14: | ||
{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!colspan="8"|Flags | !colspan="8"|Flags Affected | ||
|+ | |+ | ||
|N | |[[Negative Flag|N]] | ||
|V | |[[Overflow Flag|V]] | ||
|P | |[[Direct Page Flag|P]] | ||
|B | |[[Break Flag|B]] | ||
|H | |[[Half-Carry Flag|H]] | ||
|I | |[[Interrupt Enable Flag|I]] | ||
|Z | |[[Zero Flag|Z]] | ||
|C | |[[Carry Flag|C]] | ||
|+ | |+ | ||
| | | | ||
Line 35: | Line 35: | ||
|} | |} | ||
'''RETI''' (RETurn from Interrupt) is an [[SPC700]] instruction that returns from an interrupt. All | '''RETI''' (RETurn from Interrupt) is an [[SPC700]] instruction that returns from an interrupt. All [[program status word]] flags are restored after being popped off the [[stack]]. The [[program counter]] is also popped from the stack. | ||
=== See Also === | === See Also === | ||
Line 42: | Line 42: | ||
=== References === | === References === | ||
* [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] of the official Super Nintendo development manual | * Table C-16 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] of the official Super Nintendo development manual | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:Subroutine Call Return Commands]] | [[Category:Subroutine Call Return Commands]] | ||
[[Category:One-byte Instructions]] |
Revision as of 06:59, 28 November 2023
Basic Info | |||||||
---|---|---|---|---|---|---|---|
Addressing Mode | Opcode | Length | Speed | ||||
Stack | 7F | 1 byte | 6 cycles |
Flags Affected | |||||||
---|---|---|---|---|---|---|---|
N | V | P | B | H | I | Z | C |
RETI (RETurn from Interrupt) is an SPC700 instruction that returns from an interrupt. All program status word flags are restored after being popped off the stack. The program counter is also popped from the stack.
See Also
References
- Table C-16 in Appendix C-9 of Book I of the official Super Nintendo development manual