CHAPTER 3 CPU ARCHITECTURE
User's Manual U11919EJ3V0UM00
63
3.4 Operand Address Addressing
The following methods are available to specify the register and memory (addressing) which 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
[Example]
MOV A, !FE00H; When setting !addr16 to FE00H
Instruction Code
0
0
1
0
1
0
0
1
OP Code
0
0
0
0
0
0
0
0
00H
1
1
1
1
1
1
1
0
FEH
[Illustration]
7
0
OP Code
addr16 (Low)
addr16 (High)
Memory
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Содержание UPD789026 Series
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