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CHAPTER 4 CPU ARCHITECTURE
User’s Manual U13045EJ2V0UM00
4.4.5 Register indirect addressing
[Function]
The memory is addressed with the contents of the register pair specified as an operand. The register pair
to be accessed is specified with the register pair specify code in the instruction code. This addressing can
be carried out for all the memory spaces.
[Operand format]
Identifier
Description
—
[DE], [HL]
[Description example]
MOV A, [DE]; When selecting register pair [DE]
Instruction code
0
0
1
0
1
0
1
1
[Illustration]
15
0
8
D
7
E
0
7
7 0
A
DE
The contents of addressed
memory are transferred
Memory address specified
by register pair DE
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