參數(shù)資料
型號: m789436
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-Bit Single-Chip Microcontrollers
中文描述: 8位單芯片微控制器
文件頁數(shù): 117/144頁
文件大?。?/td> 1378K
代理商: M789436
CHAPTER 3 CPU ARCHITECTURE
74
User’s Manual U15075EJ1V0UM00
3.4.4 Register addressing
[Function]
In the register addressing mode, general-purpose registers are accessed as operands. The general-purpose
register to be accessed is specified by a register specification code or functional name in the instruction code.
Register addressing is carried out when an instruction with the following operand format is executed. When
an 8-bit register is specified, one of the eight registers is specified with 3 bits in the instruction code.
[Operand format]
Identifier
Description
r
X, A, C, B, E, D, L, H
rp
AX, BC, DE, HL
r and rp can be described with absolute names (R0 to R7 and RP0 to RP3) as well as function names (X, A,
C, B, E, D, L, H, AX, BC, DE, and HL).
[Description example]
MOV A, C; When selecting the C register for r
Instruction code
10001000
Register specification code
INCW DE; When selecting the DE register pair for rp
Instruction code
00001010
00100101
Register specification code
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