UPD78F9500MA-CAC-A Datasheet, PDF (54/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

CHAPTER 3 CPU ARCHITECTURE
3.4.6 Based addressing
[Function]
8-bit immediate data is added to the contents of the base register, that is, the HL register pair, and the sum is
used to address the memory. Addition is performed by expanding the offset data as a positive number to 16 bits.
A carry from the 16th bit is ignored. This addressing can be carried out for all the memory spaces.
[Operand format]
Identifier
−
[HL+byte]
Description
[Description example]
MOV A, [HL+10H]; When setting byte to 10H
Instruction code 0 0 1 0 1 1 0 1
00010000
[Illustration]
16
HL
H
The contents of addressed
memory are transferred
7
A
87
0
L
7
Memory
0
+10H
0
52
User’s Manual U18172EJ3V0UD