UPD78F9418A NEC, UPD78F9418A Datasheet - Page 68

• Manufacturer Part Number: UPD78F9418A
• Description: (UPD7894xxA) 8-Bit Single Chip Microcontrollers
• Manufacturer: NEC

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3.4.5 Register indirect addressing
68
[Function]
[Operand format]
[Description example]
[Illustration]
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.
MOV A, [DE]; When selecting register pair [DE]
Identifier
DE
A
[DE], [HL]
Addressed memory
contents are
transferred.
7
15
D
Instruction code
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U13952EJ3V0UD
Description
0
8
7
7
0
0
1
0
E
1
0
1
0
0
1
Memory address
specified with
register pair DE.