ZiLOG eZ80 User Manual page 156

EXX
Exchange Working Register Set with Alternate Register Set
Operation
BC ↔ BC'
DE ↔ DE'
HL ↔ HL'
Description
The CPU exchanges the contents of the primary working registers BC, DE, and HL with
the alternate working registers BC', DE', and HL', respectively.
Condition Bits Affected
None.
Attributes
Mnemonic
EXX
UM007714-0908
Operand ADL Mode
— X
Cycle Opcode (hex)
1
D9
®
eZ80 CPU
User Manual
147
CPU Instruction Set