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MICROPROCESSOR INSTRUCTION REFERENCE->EXG

EXG     Exchange Registers


R16 <-> R16   or  R8 <-> R8

where

R16 may be X, Y, U, S, PC, D

R8 may be A, B, CC (CCR), DP (DPR)

Condition Code Register:

Not Affected unless one of registers
is the Condition Code Register

    

Addressing mode	No of cycles	No of bytes
Immediate:	8/7	2

No. of cycles depends on manufacturer