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ASL: Difference between revisions

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[[Category:Group Two Instructions]]
[[Category:Group Two Instructions]]
[[Category:Read-Modify-Write Instructions]]
[[Category:Read-Modify-Write Instructions]]
[[Category:Inherited from 6502]]

Revision as of 18:45, 4 May 2023

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.

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 Clobbered
N V M X D I Z C
. . . . .