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SBC: Difference between revisions

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(added Leventhal page)
(snes9x implementation)
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* [[Carr]] page on SBC: https://archive.org/details/6502UsersManual/page/n284
* [[Carr]] page on SBC: https://archive.org/details/6502UsersManual/page/n284
* [[Leventhal]] page on SBC: https://archive.org/details/6502-assembly-language-programming/page/n140
* [[Leventhal]] page on SBC: https://archive.org/details/6502-assembly-language-programming/page/n140
* snes9x implementation of SBC: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1133


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

Revision as of 20:46, 17 May 2023

SBC (Subtract with Carry/Borrow) is 65x instruction that performs a subtraction.

Basic Info
Addressing Mode Opcode Length Speed
immediate E9 2 bytes 2 cycles
absolute ED 3 bytes 4 cycles
absolute long EF 4 bytes 5 cycles
direct page E5 2 bytes 3 cycles
direct page indirect F2 2 bytes 5 cycles
direct page indirect long E7 2 bytes 6 cycles
absolute indexed by X FD 3 bytes 4 cycles
absolute long indexed by X FF 4 bytes 5 cycles
absolute indexed by Y F9 3 bytes 4 cycles
direct page indexed by X F5 2 bytes 4 cycles
direct page indirect indexed by X E1 2 bytes 6 cycles
direct page indirect indexed by Y F1 2 bytes 5 cycles
direct page indirect long indexed by Y F7 2 bytes 6 cycles
stack relative E3 2 bytes 4 cycles
stack relative indirect indexed by Y F3 2 bytes 7 cycles
Flags Clobbered
N V M X D I Z C
. . . .

See Also

External Links