1. American sign language.

2. See a/s/l.

3. A 6502 instruction that shifts the bits in a value in A or in memory one position to the left, setting the least significant bit to 0 and moving the most significant bit into carry. It could stand for "arithmetic shift left" or "A shift left".

  • Function: N <= 1
  • Updates flags: S . . . . . Z C
  • Opcode numbers:
    dp    $06
    impl  $0A  ; works on value in A
    abs   $0E
    d,x   $16
    a,x   $1E
    

Similar: LSR | ROL | ROR
See also: 6502 instructions | 6502 addressing modes