Data Organization and Addressing Capabilities
MOTOROLA MC68030 USER’S MANUAL 2-31
The postindexed indirect mode (see Figure 2–12) uses the contents of An as an index to the
pointer list at the displacement. Register Xn is used as an index to the structure of data items
located at the address specified by the pointer. Figure 2–13 shows the preindexed indirect
addressing with outer displacement mode.
Figure 2-12. Postindexed Indirect Addressing
Figure 2-13. Preindexed Indirect Addressing with Outer Displacement
POINTER
DATA ITEM
bd
POINTER LIST
SYNTAX: ([bd,An],Xn)
Xn
An
POSTINDEXED STRUCTURE
POINTER
DATA ITEM
bd
POINTER LIST
SYNTAX: ([bd,An,Xn],od)
od
An
Xn
STRUCTURE