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S3C8248/C8245/P8245/C8247/C8249/P8249
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
Point to the
ADDRESS
(1 of 8)
~
Value used in
OPERAND
Instruction
ADDRESSING MODES
Selected
RP points
to start fo
~
working register
block
~
3-5
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