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SEC: Difference between revisions

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(type 2 admode)
(linkify implied)
Line 7: Line 7:
|'''Speed'''
|'''Speed'''
|+
|+
|implied (type 2)
|[[Implied]] (type 2)
|38
|38
|1 byte
|1 byte
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{| class="wikitable" style="float:right;clear:right;width:30%"
{| class="wikitable" style="float:right;clear:right;width:30%"
!colspan="9"|Flags Clobbered
!colspan="9"|Flags Affected
|+
|+
|N
|N

Revision as of 21:02, 23 July 2023

Basic Info
Addressing Mode Opcode Length Speed
Implied (type 2) 38 1 byte 2 cycles
Flags Affected
N V M X D I Z C
. . . . . . . 1

SEC is a 65x instruction that sets the carry flag.

Similar to doing a CLC before an ADC, it is recommended to run SEC (or otherwise make sure the carry flag is set) before running a SBC so that the difference is correct.

See Also

External Links