8XC251SA, SB, SP, SQ USER’S MANUAL
A-18
SRA
Rm Shift byte reg right through the MSB 3 2 2 1
WRj Shift word reg right through the MSB 3 2 2 1
SRL
Rm Shift byte reg right 3 2 2 1
WRj Shift word reg right 3 2 2 1
SWAP
A Swap nibbles within the acc 1 2 1 2
Table A-23. Summary of Logical Instructions (Continued)
Logical AND ANL <dest>,<src> dest opnd ←dest opnd Λ src opnd
Logical OR ORL <dest>,<src> dest opnd ← dest opnd V src opnd
Logical Exclusive OR XRL <dest>,<src> dest opnd ← dest opnd ∀ src opnd
Clear CLR A (A) ← 0
Complement CPL A (Ai) ← Ø(Ai)
Rotate RXX A (1)
Shift SXX Rm or Wj (1)
SWAP A A3:0 ↔ A7:4
Mnemonic <dest>,<src> Notes
Binary Mode Source Mode
Bytes States Bytes States
NOTES:
1. See section A.4, “Instruction Descriptions.”
2. A shaded cell denotes an instruction in the MCS
®
51 architecture.
3. If this instruction addresses an I/O port (P
x
,
x
= 0–3), add 1 to the number of states.
4. If this instruction addresses an I/O port (P
x
,
x
= 0–3), add 2 to the number of states.
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