CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U19014EJ1V0UD
53
3.4.3 Direct addressing
[Function]
The memory to be manipulated is directly addressed with immediate data in an instruction word becoming an
operand address.
This addressing can be carried out for all of the memory spaces.
[Operand format]
Identifier Description
addr16
Label or 16-bit immediate data
[Description example]
MOV A, !0FE00H; when setting !addr16 to FE00H
Operation code
1
0
0
0
1
1
1
0
OP code
0
0
0
0
0
0
0
0
00H
1
1
1
1
1
1
1
0
FEH
[Illustration]
Memory
0
7
addr16 (lower)
addr16 (upper)
OP code
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