Operand Address Addressing; Direct Addressing - NEC UPD789026 Series User Manual

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]
[Example]
MOV A, !FE00H; When setting !addr16 to FE00H
[Illustration]
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CHAPTER 3 CPU ARCHITECTURE
Identifier
addr16 Label or 16-bit immediate data
Instruction Code
7
Description
0 0 1 0 1
0 0 0 0 0
1 1 1 1 1
0
OP Code
addr16 (Low)
addr16 (High)
User's Manual U11919EJ3V0UM00
0 0 1 OP Code
0 0 0 00H
1 1 0 FEH
Memory
63