Register File Addressing - Samsung S3C8275X User Manual

ADDRESS SPACES
Special-Purpose Registers
Bank 1
FFH
E0H
D0H
C0H
BFH
RP1
RP0
Each register pointer (RP) can independently point
to one of the 24 8-byte "slices" of the register file
(other than set 2). After a reset, RP0 points to
locations C0H-C7H and RP1 to locations C8H-CFH
(that is, to the common working register area).
NOTE: In the S3C8275X/C8278X/C8274X microcontroller,
pages 0-2 are implemented.
Pages 0-2 contain all of the addressable
registers in the internal register file.
00H
2-16
Bank 0
Control
Registers
System
Registers
Register
Pointers
Register Addressing Only
Can be Pointed by Register Pointer
Figure 2-11. Register File Addressing
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
General-Purpose Register
CFH
Addressing
FFH
Set 2
C0H
Prime
Registers
Page 0 Page 0
All Indirect Register,
Indexed
Modes Addressing
Modes
LCD Data
Registers
All
Addressing
Modes
Can be Pointed to
By register Pointer