datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

MC68030 View Datasheet(PDF) - Motorola => Freescale

Part Name
Description
View to exact match
MC68030
Motorola
Motorola => Freescale Motorola
MC68030 Datasheet PDF : 602 Pages
First Prev 41 42 43 44 45 46 47 48 49 50 Next Last
Data Organization and Addressing Capabilities
The effective address field may require additional information to fully specify the operand
address. This additional information, called the effective address extension, is contained in
an additional word or words and is considered part of the instruction. Refer to 2.5 Effective
Address Encoding Summary for a description of the extension word formats.
The notational conventions used in the addressing mode descriptions in this section are:
EA
An
Dn
Xn.SIZE*SCALE —
PC
dn
bd
od
L
W
()
[]
Effective address
Address register n
Example: A3 is address register 3
Data register n
Example: D5 is data register 5
Denotes index register n (data or address), the index size
(W for word, L for long word), and a scale factor (1, 2, 4,
or 8 for no, word, long-word, or quad-word scaling, respectively).
The program counter
Displacement value, n bits wide
Base displacement
Outer displacement
Long-word size
Word size
Identify an indirect address in a register
Identify an indirect address in memory
When the addressing mode uses a register, the register field of the operation word specifies
the register to be used. Other fields within the instruction specify whether the register
selected is an address or data register and how the register is to be used.
2.4.1 Data Register Direct Mode
In the data register direct mode, the operand is in the data register specified by the effective
address register field.
GENERATION:
EA = Dn
ASSEMBLER SYNTAX:
Dn
MODE:
000
REGISTER:
n
31
0
DATA REGISTER:
Dn
OPERAONPDERAND
NUMBER OF EXTENSION WORDS: 0
MOTOROLA
MC68030 USER’S MANUAL
2-9
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]