CHAPTER 3 CPU ARCHITECTURE
User's Manual U11919EJ3V0UM00
67
3.4.5 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 specification code in the instruction code. This addressing can be
carried out for all the memory spaces.
[Operand format]
Identifier
Description
−
[DE], [HL]
[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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