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Ex af, af – Zilog Z08470 User Manual

Page 135

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UM008007-0715

Z80 Instruction Description

Z80 CPU

User Manual

123

EX AF, AF

Operation

AF

AF'

Op Code

EX

Operands

AF, AF

Description

The 2-byte contents of the register pairs AF and AF' are exchanged. Register pair AF con-
sists of registers A′ and F′.

Condition Bits Affected

None.

Example

If register pair AF contains

9900h

and register pair AF′ contains

5944h

, the contents of

AF are

5944h

and the contents of AF′ are

9900h

upon execution of the EX AF, AF

instruction.

M Cycles

T States

4 MHz E.T.

1

4

1.00

0

0

0

0

0

0

0

1

08

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