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ASL

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Basic Info
Addressing Mode Opcode Length Speed
Accumulator 0A 1 byte 2 cycles
Absolute 0E 3 bytes 6 cycles*
Direct Page 06 2 bytes 5 cycles*
absolute indexed X 1E 3 bytes 7 cycles*
direct page indexed X 16 2 bytes 6 cycles*
Flags Affected
N V M X D I Z C
. . . . .

ASL (Arithmetic Shift Left) is a 65x instruction that shifts a value by left one bit (multiplication by two). The most significant bit is shifted into the carry flag. The least significant bit becomes a zero.

Cycle Penalties

See Also

External Links