參數(shù)資料
型號(hào): μPD789F806Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 38/125頁
文件大?。?/td> 366K
代理商: ΜPD789F806Y
CHAPTER 3 ADDRESSING
21
3.2.5 Register Indirect Addressing
[Function]
The memory to be manipulated is addressed based on the contents of the register pair which is specified as
an operand. The register pair to be accessed is specified with a 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
Memory address
specified with
register pair DE
The contents at
the specified memory
address are transferred.
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