參數(shù)資料
型號: UPD178F054
英文描述: 78K/0 Series for Instructions | User's Manual[10/2001]
中文描述: 78K線/ 0系列說明|用戶手冊[10/2001]
文件頁數(shù): 57/129頁
文件大?。?/td> 644K
代理商: UPD178F054
33
CHAPTER 4 INSTRUCTION SET
User's Manual U12326EJ4V0UM
4.1.2 Description of “operation” column
A:
A register; 8-bit accumulator
X:
X register
B:
B register
C:
C register
D:
D register
E:
E register
H:
H register
L:
L register
AX:
AX register pair; 16-bit accumulator
BC:
BC register pair
DE:
DE register pair
HL:
HL register pair
PC:
Program counter
SP:
Stack pointer
PSW:
Program status word
CY:
Carry flag
AC:
Auxiliary carry flag
Z:
Zero flag
RBS:
Register bank select flag
IE:
Interrupt request enable flag
NMIS:
Flag indicating non-maskable interrupt servicing in progress
( ):
Memory contents indicated by address or register contents in parentheses
XH, XL: Higher 8 bits and lower 8 bits of 16-bit register
:
Logical product (AND)
V:
Logical sum (OR)
V:
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
V
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