Register Indirect Addressing - NEC switch User Manual

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
— [DE], [HL]
[Description example]
MOV A, [DE]; When selecting register pair [DE]
[Illustration]
15
DE
Addressed memory
contents are
transferred
7
A
CHAPTER 3 CPU ARCHITECTURE
Description
Instruction code 0 0 1
8 7
D
7
0
User's Manual U12978EJ3V0UD
0 1 0 1 1
0
E
Memory address
specified with
0
register pair DE
55