60
CHAPTER 3 CPU ARCHITECTURE
3.4.3 Direct addressing
[Function]
The memory to be manipulated is addressed with immediate data in an instruction word becoming an operand
address.
[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
[Operation]
Memory
0
7
addr16 (lower)
addr16 (upper)
OP code
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