NEC switch - Manual (Page 55)

CHAPTER 3 CPU ARCHITECTURE
User’s Manual U12978EJ3V0UD
55
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 0 0 1 0 1 0 1 1
[Illustration]
15 0 8
D
7
E
0 7
7 0
A
DE
Addressed memory
contents are
transferred
Memory address
specified with
register pair DE