Register Indirect Addressing - NEC 78K0S/KA1+ Preliminary User's Manual

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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 specify code in the instruction code. This addressing can be carried
out for all the memory spaces.
[Operand format]
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[Description example]
MOV A, [DE]; When selecting register pair [DE]
[Illustration]
Identifier
−
[DE], [HL]
Instruction code
15
DE D
The contents of addressed
memory are transferred
7
A
CHAPTER 3 CPU ARCHITECTURE
Description
0 0 1 0 1
8 7
E
7
0
Preliminary User's Manual U16898EJ1V0UD
0 1 1
0
Memory address specified
0
by register pair DE
43