Indirect Working Register Addressing To Register File - Samsung S3C8275X User Manual

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
INDIRECT REGISTER ADDRESSING MODE
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
(Continued)
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