Samsung S3P80C5 User Manual page 54

S3P80C5/C80C5/C80C8
INDIRECT REGISTER ADDRESSING MODE (Continued)
4-bit
Working
Register
Address
Sample Instruction:
OR
Figure 3-5. Indirect Working Register Addressing to Register File
Program Memory
dst src
OPCODE
Working Register
R3, @R6
Register File
MSB Points to
RP0 or RP1
RP0 or RP1
~
3 LSBs
ADDRESS
Point to the
(1 of 8)
~
Value used in
OPERAND
Instruction
ADDRESSING MODES
Selected
RP Points
~
to Start of
Woking
Register
Block
~
3-5