We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
CLC: Difference between revisions
From SnesLab
(see also SEC) |
(note about why to use it) |
||
| Line 1: | Line 1: | ||
'''CLC''' is a 65x instruction that clears the [[carry flag]]. | '''CLC''' is a 65x instruction that clears the [[carry flag]]. | ||
The 6502 lacks an add-without-carry instruction, so it is important to make sure the carry flag is clear before doing an [[ADC]] or else the sum will be one too great. | |||
{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
Revision as of 18:55, 8 May 2023
CLC is a 65x instruction that clears the carry flag.
The 6502 lacks an add-without-carry instruction, so it is important to make sure the carry flag is clear before doing an ADC or else the sum will be one too great.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| implied | 18 | 1 byte | 2 cycles | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | 0 | |