Motorola MC68030 User Manual page 33

Introduction
Register Direct
Data Register Direct
Address Register Direct
Register Indirect
Address Register Indirect
Address Register Indirect with Postincrement
Address Register Indirect with Predecrement
Address Register Indirect with Displacement
Register Indirect with Index
Address Register Indirect with Index (8-BitDisplacement)
Address Register Indirect with Index (Base Displacement)
Memory Indirect
Memory Indirect Postindexed
Memory Indirect Preindexed
Program Counter Indirect with Displacement
Program Cou nter Indirect with IndexPC Indirect with Index (8-Bit
Displacement)
PC Indirect with Index (Base Displacement)
Program Counter Memory Indirect
PC Memory Indirect Postindexed
PC Memory Indirect Preindexed
Absolute
Absolute Short
Absolute Long
Immediate
NOTES:
Dn = Data Register, D0–D7
An = Address Register, A0–A7
d
8, 16 = A twos-complement or sign-extended displacement; added as part of the effective address
calculation; size is 8 (d
Xn = Address or data register used as an index register; form is Xn.SIZE*SCALE, where SIZE is .W
or .L indicates index register size) and SCALE is 1, 2, 4, or 8 (index register is multiplied by
SCALE); use of SIZE and/or SCALE is optional.
bd = A twos-complement base displacement;when present, size can be 16 or 32 bits.
od = Outer displacement, added as part of effective address calculation after any memory
indirection; use is optional with asize of 16 or 32 bits.
PC = Program Counter
(data) = Immediate value of 8, 16, or 32 bits
( ) = Effective Address
[ ] = Use as indirect access to long-word address.
1-10
Table 1-1. Addressing Modes
Addressing Modes
) or 16 (d
8 16
MC68030 USER'S MANUAL
Dn
An
(An)
(An)
–(An)
(d ,An)
16
(d ,An,Xn)
8
(bd,An,Xn)
([bd,An],Xn,od)
([bd,An,Xn],od)
(d ,PC)
16
(d ,PC,Xn)
8
(bd,PC,Xn)
([bd,PC],Xn,od)
([bd,PC,Xn],od)
(xxx).W
(xxx).L
#(data)
) bits; when omitted, assemblers use a value of zero.
Syntax
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