Z8 Microcontrollers
ZiLOG Addressing Modes
UM001601-0803 11-5
11.4 Z8 INDEXED ADDRESSING (X)
The Indexed Addressing Mode is used only by the Load (LD) in-
struction. An indexed address consists of a register address off-
set by the contents of a designated Working Register (the Index).
This offset is added to the register address to obtain the address
of the operand. Figure 11-5 illustrates this addressing conven
-
tion.
Figure 11-5. Indexed Register Addressing
Op Code
Register File
Program Memory
Points to
src
Two Operand
Points to Origin
Instruction
dst/
RP
Operand
Offset
Working
Register
Offset
Address
of Working
Register Group
Value Used in
Instruction
Address
X
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