Prime Register Space; Set 1, Set 2, And Prime Area Register Map - Samsung S3F80JB User Manual

S3F80JB

PRIME REGISTER SPACE

The lower 192 bytes of the 256-byte physical internal register file (00H–BFH) are called the prime register space
or, more simply, the prime area. You can access registers in this address using any addressing mode. (In other
words, there is no addressing mode restriction for these registers, as is the case for set 1 and set 2 registers.).
The prime register area on page 0 is immediately addressable following a reset.
Set 1
Bank 0
FFH
FCH
E0H
D0H
C0H
CPU and system control
General-purpose
Peripheral and IO
Figure 2-5. Set 1, Set 2, and Prime Area Register Map
Bank 1
FFH
C0H
BFH
00H
ADDRESS SPACES
Page 0
Set 2
Page 0
Prime
Register
Area
2-9