Samsung C8278X ユーザーズマニュアル
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
ADDRESSING
MODES
3-5
INDIRECT REGISTER ADDRESSING MODE
(Continued)
dst
OPCODE
ADDRESS
4-bit
Working
Register
Address
Point to the
Working Register
(1 of 8)
Sample Instruction:
OR
R3, @R6
Program Memory
Register File
src
3 LSBs
Value used in
Instruction
OPERAND
Selected
RP points
to start fo
working register
block
RP points
to start fo
working register
block
RP0 or RP1
MSB Points to
RP0 or RP1
~
~
~
~
Figure 3-5. Indirect Working Register Addressing to Register File