UPD78F1502AGK-GAK-AX Datasheet, PDF (875/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 30 INSTRUCTION SET
30.1.3 Description of flag operation column
The change of the flag value when the instruction is executed is shown in the “Flag” column using the following symbols.
Table 30-3. Symbols in “Flag” Column
Symbol
(Blank)
0
1
×
R
Change of Flag Value
Unchanged
Cleared to 0
Set to 1
Set/cleared according to the result
Previously saved value is restored
30.1.4 PREFIX instruction
Instructions with “ES:” have a PREFIX operation code as a prefix to extend the accessible data area to the 1 MB space
(00000H to FFFFFH), by adding the ES register value to the 64 KB space from F0000H to FFFFFH. When a PREFIX
operation code is attached as a prefix to the target instruction, only one instruction immediately after the PREFIX operation
code is executed as the addresses with the ES register value added.
Table 30-4. Use Example of PREFIX Operation Code
Instruction
MOV !addr16, #byte
MOV ES:!addr16, #byte
MOV A, [HL]
MOV A, ES:[HL]
1
CFH
11H
8BH
11H
Opcode
2
3
4
!addr16
#byte
CFH
!addr16
−
−
−
8BH
−
−
5
−
#byte
−
−
Caution Set the ES register value with MOV ES, A, etc., before executing the PREFIX instruction.
R01UH0004EJ0501 Rev.5.01
859
Jun 20, 2011