CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16898EJ3V0UD
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3.4 Operand Address Addressing
The following methods (addressing) are available to specify the register and memory to undergo manipulation
during instruction execution.
3.4.1 Direct addressing
[Function]
The memory indicated by immediate data in an instruction word is directly addressed.
[Operand format]
Identifier Description
addr16
Label or 16-bit immediate data
[Description example]
MOV A, !0FE80H; When setting !addr16 to FE80H
Instruction
code 0 0 1 0 1 0 0 1
OP
code
1 0 0 0 0 0 0 0
80H
1 1 1 1 1 1 1 0
FEH
[Illustration]
7
0
OP code
addr16 (low)
addr16 (high)
Memory