Oki MSM66P201 User Manual
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MSM66201/66P201/66207/66P207
ADDRESSING MODES
The MSM66201/66207 provides independent 64K-byte data and 64K-byte program space with
various types of addressing modes. These modes are shown below, for both RAM (for data space)
and ROM (for program space).
1. RAM Addressing Modes (for data space)
1.1
Register Direct Addressing
ROR
DP
DP
Example
1.2
Displacement Addressing
a) Zero Page
18H
SFR
0000H
0018H
L
A,
Example
b) Direct Page
off 10H
RAM
xx00H
xx10H
ST
A,
Example
1.3
Pointing Register (PR) Indirect Addressing
a) Data Point (DP) Indirect
RAM
[DP]
SLL
DP
Example
b) User Stack Pointer (USP) Indirect
RAM
[USP]
–128 to +127
USP
SRL 10H
Example