MC68LC040RC25A Datasheet, PDF (31/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
applications and high-level languages. The program counter indirect mode also has
indexing and offset capabilities. This addressing mode is typically required to support
position-independent software. Besides these addressing modes, the M68040 provides
index sizing and scaling features.
An instruction’s addressing mode can specify the value of an operand, a register
containing the operand, or how to derive the effective address of an operand in memory.
Each addressing mode has an assembler syntax. Some instructions imply the addressing
mode for an operand. These instructions include the appropriate fields for operands that
use only one addressing mode. Table 1-2 lists a summary of the effective addressing
modes for the M68040. Refer to M68000PM/AD, M68000 Family Programmer’s
Reference Manual, for details on instruction format and addressing modes.
Table 1-2. Effective Addressing Modes
Addressing Modes
Register Direct
Data
Address
Register Indirect
Address
Address with Postincrement
Address with Predecrement
Address with Displacement
Address Register Indirect with Index
8-Bit Displacement
Base Displacement
Memory Indirect
Postindexed
Preindexed
Program Counter Indirect
with Displacement
Program Counter Indirect with Index
8-Bit Displacement
Base Displacement
Program Counter Memory Indirect
Postindexed
Preindexed
Absolute Data Addressing
Short
Long
Immediate
Syntax
Dn
An
(An)
(An)+
–(An)
(d16,An)
(d _8,An,Xn)
(bd,An,Xn)
([bd,An],Xn,od)
([bd,An,Xn],od)
(d _16,PC)
(d _8,PC,Xn)
(bd,PC,Xn)
([bd,PC],Xn,od)
([bd,PC,Xn],od)
(xxx).W
(xxx).L
#<xxx>
1-10
M68040 USER’S MANUAL
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