NEC 78K/0 Series - Manual (Page 53)

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CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Exchange Word
XCHW
Word Data Exchange
[Instruction format] XCHW dst, src
[Operation] dst
↔ src
[Operand]
Mnemonic Operand(dst,src)
XCHW AX, rp Note
Note Only when rp = BC, DE or HL
[Flag]
Z AC CY
[Description]
• The 1st and 2nd operand contents are exchanged.
[Description example]
XCHW AX, BC; The memory contents of the AX register are exchanged with those of the BC register.