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: Difference between revisions

From SnesLab
Jump to: navigation, search
(added Labiak page)
(added MCS6500 page)
Line 114: Line 114:
* [[Eyes & Lichty]] page on CMP: https://archive.org/details/0893037893ProgrammingThe65816/page/n471
* [[Eyes & Lichty]] page on CMP: https://archive.org/details/0893037893ProgrammingThe65816/page/n471
* [[Labiak]] page on CMP: https://archive.org/details/Programming_the_65816/page/n143
* [[Labiak]] page on CMP: https://archive.org/details/Programming_the_65816/page/n143
* [[MCS6500 Manual]] page on CMP: https://archive.org/details/mos_microcomputers_programming_manual/page/n60


[[Category:ASM]]
[[Category:ASM]]
[[Category:Group One Instructions]]
[[Category:Group One Instructions]]
[[Category:Inherited from 6502]]
[[Category:Inherited from 6502]]

Revision as of 03:50, 16 May 2023

CMP (Compare) is a 65x instruction that compares the value of the accumulator.

Basic Info
Addressing Mode Opcode Length Speed
immediate C9 2 bytes 2 cycles
absolute CD 3 bytes 4 cycles
absolute long CF 4 bytes 5 cycles
direct page C5 2 bytes 3 cycles
direct page indirect D2 2 bytes 5 cycles
direct page indirect long C7 2 bytes 6 cycles
absolute indexed by X DD 3 bytes 4 cycles
absolute long indexed by X DF 4 bytes 5 cycles
absolute indexed by Y D9 3 bytes 4 cycles
direct page indexed by X D5 2 bytes 4 cycles
direct page indexed indirect by X C1 2 bytes 6 cycles
direct page indirect indexed by Y D1 2 bytes 5 cycles
direct page indirect long indexed by Y D7 2 bytes 6 cycles
stack relative C3 2 bytes 4 cycles
stack relative indirect indexed by Y D3 2 bytes 7 cycles
Flags Clobbered
N V M X D I Z C
. . . . .

See Also

External Links