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STA

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Revision as of 20:42, 22 November 2023 by Xetheria (talk | contribs) (Category load/store)
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Basic Info
Addressing Mode Opcode Length Speed
Absolute 8D 3 bytes 4 cycles*
Absolute Long 8F 4 bytes 5 cycles*
Direct Page 85 2 bytes 3 cycles*
Direct Page Indirect 92 2 bytes 5 cycles*
direct page indirect long 87 2 bytes 6 cycles*
absolute indexed by X 9D 3 bytes 4 cycles*
absolute long indexed by X 9F 4 bytes 5 cycles*
absolute indexed by Y 99 3 bytes 4 cycles*
direct page indexed by X 95 2 bytes 4 cycles*
direct page indexed indirect by X 81 2 bytes 6 cycles*
direct page indirect indexed by Y 91 2 bytes 5 cycles*
direct page indirect long indexed by Y 97 2 bytes 6 cycles*
Stack Relative 83 2 bytes 4 cycles*
stack relative indirect indexed by Y 93 2 bytes 7 cycles*
Flags Affected
N V M X D I Z C
. . . . . . . .

STA (Store Accumulator) is a 65x instruction that stores the value of the accumulator.

Cycle Penalties

See Also

External Links