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ASL: Difference between revisions

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=== External Links ===
=== External Links ===
* [[Eyes & Lichty]] page on ASL: https://archive.org/details/0893037893ProgrammingThe65816/page/n453
* [[Eyes & Lichty]] page on ASL: https://archive.org/details/0893037893ProgrammingThe65816/page/n453
* [[Labiak]] page on ASL: https://archive.org/details/Programming_the_65816/page/n127


[[Category:ASM]]
[[Category:ASM]]

Revision as of 02:50, 16 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
. . . . .

External Links