We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

CMP (SPC700): Difference between revisions

From SnesLab
Jump to: navigation, search
(implied admodes)
(implied indirect admode)
Line 12: Line 12:
|2 cycles
|2 cycles
|+
|+
|[[Implied]] (type 1)
|[[Implied Indirect]] (type 1)
|66
|66
|1 bytes
|1 bytes
Line 52: Line 52:
|6 cycles
|6 cycles
|+
|+
|[[Implied]] (type 1)
|[[Implied Indirect]] (type 1)
|79
|79
|1 bytes
|1 bytes

Revision as of 16:51, 24 July 2023

Basic Info
Addressing Mode Opcode Length Speed
Immediate 68 2 bytes 2 cycles
Implied Indirect (type 1) 66 1 bytes 3 cycles
Direct Page 64 2 bytes 3 cycles
Direct Page Indexed by X 74 2 bytes 4 cycles
Absolute 65 3 bytes 4 cycles
Absolute Indexed by X 75 3 bytes 5 cycles
Absolute Indexed by Y 76 3 bytes 5 cycles
Direct Page Indexed Indirect by X 67 2 byte 6 cycles
Direct Page Indirect Indexed by Y 77 2 bytes 6 cycles
Implied Indirect (type 1) 79 1 bytes 5 cycles
Direct Page 69 3 bytes 6 cycles
Direct Page Immediate 78 3 bytes 5 cycles
Immediate C8 2 bytes 2 cycles
Direct Page 3E 2 bytes 3 cycles
Absolute 1E 3 bytes 4 cycles
Immediate AD 2 bytes 2 cycles
Direct Page 7E 2 bytes 3 cycles
Absolute 5E 3 bytes 4 cycles
Flags Affected
N V P B H I Z C
. . . . .

CMP is an SPC700 instruction that compares two operands. The right operand is subtracted from the left operand, but the difference is not stored anywhere - the side effect is the N, Z, and C flags being modified.

See Also

External Links