參數(shù)資料
型號: μPD789418
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): 42/125頁
文件大?。?/td> 366K
代理商: ΜPD789418
CHAPTER 4 INSTRUCTION SET
25
4.1.2 Description of "Operation" Column
A
X
B
C
D
E
H
L
AX
BC
DE
HL
PC
SP
PSW
CY
AC
Z
IE
NMIS
( )
X
H
, X
L
: A register; 8-bit accumulator
: X register
: B register
: C register
: D register
: E register
: H register
: L register
: AX register pair; 16-bit accumulator
: BC register pair
: DE register pair
: HL register pair
: Program counter
: Stack pointer
: Program status word
: Carry flag
: Auxiliary carry flag
: Zero flag
: Interrupt request enable flag
: Flag indicating non-maskable interrupt servicing in progress
: Memory contents indicated by address or register contents in parentheses
: Higher 8 bits and lower 8 bits of 16-bit register
: Logical product (AND)
: Logical sum (OR)
: Exclusive logical sum (exclusive OR)
: Inverted data
addr16 : 16-bit immediate data or label
jdisp8
: Signed 8-bit data (displacement value)
4.1.3 Description of "Flag Operation" Column
(Blank) : Unchanged
0
: Cleared to 0
1
: Set to 1
×
: Set/cleared according to the result
R
: Previously saved value is restored
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