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ASL: Difference between revisions

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=== External Links ===
=== External Links ===
* [[Eyes & Lichty]] page 427, on ASL: https://archive.org/details/0893037893ProgrammingThe65816/page/n453
* [[Eyes & Lichty]] page 427, on ASL: https://archive.org/details/0893037893ProgrammingThe65816/page/n453
* [[Labiak]] page on ASL: https://archive.org/details/Programming_the_65816/page/n127
* [[Labiak]] page 117 on ASL: https://archive.org/details/Programming_the_65816/page/n127
* [[MCS6500 Manual]] page on ASL: https://archive.org/details/mos_microcomputers_programming_manual/page/n170
* [[MCS6500 Manual]] page on ASL: https://archive.org/details/mos_microcomputers_programming_manual/page/n170
* [[Carr]] page on ASL: https://archive.org/details/6502UsersManual/page/n260
* [[Carr]] page on ASL: https://archive.org/details/6502UsersManual/page/n260

Revision as of 02:31, 28 November 2023

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