6 register indirect addressing – NEC 78K/0 Series User Manual
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CHAPTER 3 ADDRESSING
User's Manual U12326EJ4V0UM
15
0
8
D
7
E
0
7
7 0
A
DE
Memory
Memory address specified
by register pair DE
Contents of memory to be
addressed are transferred
3.2.6 Register indirect addressing
[Function]
Register indirect addressing addresses memory with register pair contents specified as an operand. The
register pair to be accessed is specified by the register bank selection flags (RBS0 and RBS1) and the
register pair specification in instruction codes.
[Operand format]
Identifier
Description
—
[DE], [HL]
[Description example]
MOV A, [DE]; When selecting register pair [DE]
Instruction code
1
0
0
0
0
1
0
1
[Illustration]
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