Register File Addressing - Samsung S3F80JB User Manual

S3F80JB
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:
00H
2-14
Bank 0
Control
Registers
System
Registers
Register
Pointers
In the S3F80JB microcontroller,only page0 is
implemented.Page0 containsall of the
addressable registers in the internal register file.
Register Addressing Only
Can be Pointed by Register Pointer
Figure 2-10. Register File Addressing
General-Purpose Registers
CFH
ADDRESS SPACES
FFH
Set 2
C0H
Prime
Registers
Page 0 Page 0
All Indirect
Addressing Register,
Modes Indexed
Addressing
Modes