SX User’s Manual Rev. 3.1 124 © 2000 Scenix Semiconductor, Inc. All rights reserved. www.scenix.com Chapter 3 Instruction Set 3.6.53    SWAP fr Swap High/Low Nibbles of fr Operation: fr = <> fr Bits affected: none Opcode: 0011 101f ffff Description: This instruction exchanges the high-order and low-order nibbles (4-bit segments) of
the specified file register. Cycles: 1 Example: swap $0B This example swaps the high-order and low-order nibbles of file register 0Bh. For
example, if the register contains A5h, after executing this instruction, the register
will contain 5Ah.