參數(shù)資料
型號: UPD70320GJ-8-5BG
廠商: NEC Corp.
英文描述: V25TM 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: V25TM 16/8-BIT單片機
文件頁數(shù): 12/74頁
文件大?。?/td> 439K
代理商: UPD70320GJ-8-5BG
12
μ
PD70320
Identifier
Description
W
Byte/word specification bit (0: byte, 1: word). However, when s = 1, the sign extended byte data
should be 16-bit operand even when W is 1.
reg
Register field (000 to 111)
mem
Memory field (000 to 111)
mod
Mode field (00 to 10)
s
Sign extension specification bit (0: Sign is not extended, 1: Sign is extended)
X, XXX, YYY, ZZZ
Data used to judge instruction code of external floating-point operation chip
Table 2-2. Operation Code Identifier
Table 2-3. Operation Identifier (1/2)
Identifier
Description
AW
Accumulator (16 bits)
AH
Accumulator (upper byte)
AL
Accumulator (lower byte)
BW
Register BW (16 bits)
CW
Register CW (16 bits)
CL
Register CW (lower byte)
DW
Register DW (16 bits)
SP
Stack pointer (16 bits)
PC
Program counter (16 bits)
PSW
Program status word (16 bits)
IX
Index register (source) (16 bits)
IY
Index register (destination) (16 bits)
PS
Program segment register (16 bits)
DS1
Data segment 1 register (16 bits)
DS0
Data segment 0 register (16 bits)
SS
Stack segment register (16 bits)
AC
Auxiliary carry flag
CY
Carry flag
P
Parity flag
S
Sign flag
Z
Zero flag
DIR
Direction flag
IE
Interrupt enable flag
V
Overflow flag
BRK
Break flag
MD
Mode flag
(···)
Contents in memory shown in ( )
disp
Displacement (8/16 bits)
ext-disp8
16 bits obtained by extending sign of 8-bit displacement
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