CHAPTER 3 CPU ARCHITECTURE
User’s Manual U15331EJ4V1UD 73
3.4.5 Register indirect addressing
[Function]
In the register indirect addressing mode, memory is manipulated according to the contents of a register pair
specified as an operand. The register pair to be accessed is specified by the register pair specification code in
an 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 00101011
[Illustration]
15 08
D
7
E
07
7 0
A
DE
Addressed memory
contents are
transferred.
Memory address
specified with
register pair DE.