參數資料
型號: 78064B
廠商: NEC Corp.
英文描述: Common to 78K/0 Series
中文描述: 共同的78K / 0系列
文件頁數: 17/129頁
文件大?。?/td> 644K
代理商: 78064B
17
CHAPTER 2 REGISTERS
User's Manual U12326EJ4V0UM
2.2 General-Purpose Registers
General-purpose registers are mapped at particular addresses (FEE0H to FEFFH) of the data memory. These
registers consist of 4 banks, each bank consisting of eight 8-bit registers (X, A, C, B, E, D, L and H).
In addition that each register can be used as an 8-bit register, two 8-bit registers in pairs can be used as a 16-
bit register (AX, BC, DE and HL).
General-purpose registers can be described in terms of functional names (X, A, C, B, E, D, L, H, AX, BC, DE
and HL) and absolute names (R0 to R7 and RP0 to RP3).
Register banks to be used for instruction execution are set with the CPU control instruction (SEL RBn). Because
of the 4-register bank configuration, an efficient program can be created by switching between a register for normal
processing and a register for processing upon interrupt generation for each bank.
Table 2-1. General-Purpose Register Absolute Address Correspondence Table
Bank Name
Register
Absolute Address
Bank Name
Register
Absolute Address
Functional
Name
Absolute
Name
Functional
Name
Absolute
Name
BANK0
H
R7
FEFFH
BANK2
H
R7
FEEFH
L
R6
FEFEH
L
R6
FEEEH
D
R5
FEFDH
D
R5
FEEDH
E
R4
FEFCH
E
R4
FEECH
B
R3
FEFBH
B
R3
FEEBH
C
R2
FEFAH
C
R2
FEEAH
A
R1
FEF9H
A
R1
FEE9H
X
R0
FEF8H
X
R0
FEE8H
BANK1
H
R7
FEF7H
BANK3
H
R7
FEE7H
L
R6
FEF6H
L
R6
FEE6H
D
R5
FEF5H
D
R5
FEE5H
E
R4
FEF4H
E
R4
FEE4H
B
R3
FEF3H
B
R3
FEE3H
C
R2
FEF2H
C
R2
FEE2H
A
R1
FEF1H
A
R1
FEE1H
X
R0
FEF0H
X
R0
FEE0H
相關PDF資料
PDF描述
78064Y Common to 78K/0 Series
78070A Common to 78K/0 Series
78070AY Common to 78K/0 Series
78075B Common to 78K/0 Series
78075BY Common to 78K/0 Series
相關代理商/技術參數
參數描述
78064Y 制造商:NEC 制造商全稱:NEC 功能描述:Common to 78K/0 Series
78065-004 制造商:FCI 功能描述:
780-651 制造商:WAGO Innovative Connections 功能描述:RL MTD BLK ANGLE BLUE
780651F00000 制造商:Aavid Thermalloy 功能描述:8 FT EXTRUSTIONS - Bulk
780653B00590 制造商:Aavid Thermalloy 功能描述:- Bulk