mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 81

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

2.5 Addressing Mode Summary
Addressing modes are categorized by how they are used. Data addressing modes refer to
data operands. Memory addressing modes refer to memory operands. Alterable addressing
modes refer to alterable (writable) data operands. Control addressing modes refer to
memory operands without an associated size.
These categories sometimes combine to form more restrictive categories. Two combined
classifications are alterable memory (both alterable and memory) and data alterable (both
alterable and data). Twelve of the most commonly used effective addressing modes from
the M68000 Family are available on ColdFire microprocessors. Table 2-5 summarizes
these modes and their categories.
2.6 Instruction Set Summary
The ColdFire instruction set is a simplified version of the M68000 instruction set. The
removed instructions include BCD, bit field, logical rotate, decrement and branch, and
integer multiply with a 64-bit result. Nine new MAC instructions have been added.
Table 2-6 lists notational conventions used throughout this manual.
Register direct
Register indirect
Postincrement
Predecrement
Displacement
Address register indirect with
scaled index
Program counter indirect
Program counter indirect
with scaled index
Absolute data addressing
Immediate
Data
Address
Address
Address with
Address with
Address with
8-bit displacement
with displacement
8-bit displacement
Short
Long
Addressing Modes
Table 2-5. ColdFire Effective Addressing Modes
(d
(d
(d
Syntax
(d
(xxx).W
#<xxx>
Xi*SF)
Xi*SF)
(xxx).L
(An)+
–(An)
16
16
(An)
8
8
Dn
An
, PC,
, An,
, PC)
, An)
Chapter 2. ColdFire Core
Mode
Field
000
001
010
011
100
101
110
111
111
111
111
111
reg. no.
reg. no.
reg. no.
reg. no.
reg. no.
reg. no.
reg. no.
Field
Reg.
010
011
000
001
100
Data
—
X
X
X
X
X
X
X
X
X
X
X
Memory
—
—
X
X
X
X
X
X
X
X
X
X
Addressing Mode Summary
Category
Control
—
—
—
—
—
X
X
X
X
X
X
X
Alterable
—
—
—
—
—
X
X
X
X
X
X
X
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