We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
PCALL (SPC700): Difference between revisions
From SnesLab
(→External Links: added anomie link) |
(→See Also: JSR) |
||
| Line 48: | Line 48: | ||
=== See Also === | === See Also === | ||
* [[TCALL]] | * [[TCALL]] | ||
* [[JSR]] | |||
=== External Links === | === External Links === | ||
Revision as of 23:27, 13 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Uppermost Page | 4F | 2 bytes | 6 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | . |
PCALL (uPage CALl) is an SPC700 instruction that runs a subroutine in the Uppermost Page. The operand specifies the low byte of the target address within the uppermost page.
No flags are affected.
Syntax
PCALL upage
PCALL $xx has the same effect as CALL $FFxx.[2]
See Also
External Links
- Official Nintendo documentation on PCALL: Table C-16 Appendix C-9 of Book I
- https://forums.nesdev.org/viewtopic.php?t=13313
- https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L534