PCALL (SPC700): Difference between revisions

Revision as of 12:05, 28 November 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Uppermost Page	4F	2 byte	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.

External Links

Official Nintendo documentation on PCALL: Table C-16 Appendix C-9 of Book I

@@ Line 1: / Line 1: @@
-'''PCALL''' (uPage CALl) is an [[SPC700]] instruction.
+{| class="wikitable" style="float:right;clear:right;width:40%"
-{| class="wikitable" style="float:right;clear:right;width:30%"
 !colspan="8"|Basic Info
 |+
@@ Line 9: / Line 7: @@
 |'''Speed'''
 |+
-|implied
+|[[Uppermost Page Addressing | Uppermost Page]]
 |4F
 |2 byte
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 {| class="wikitable" style="float:right;clear:right;width:30%"
-!colspan="8"|Flags Clobbered
+!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 36: / Line 34: @@
 |.
 |}
+'''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.
 === See Also ===
 * [[CALL]]
 * [[TCALL]]
+=== External Links ===
+* Official Nintendo documentation on PCALL: Table C-16 [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I]
 [[Category:ASM]]
 [[Category:SPC700]]
+[[Category:Subroutine Call, Return Commands]]
+[[Category:Two-byte Instructions]]