Prime Register Space - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00

2.3.1.3 Prime Register Space

The lower 192 bytes (00H–BFH) of 256 byte register page 0 in S3F84B8 is called prime register area. Prime
registers can be accessed by using any of the seven addressing modes (see Chapter 3, "Addressing Modes").
The prime register area on page 0 the prime register area on page 0 can be addressed immediately after a reset.
But to address prime registers on page 0 or 1, you must set the register page pointer (PP) to its appropriate
source and destination values.
Set 1
Bank 0
FFH
FCH
E0H
D0H
C0H
CPU and system control
General-purpose
Peripheral and I/O
LCD data register
Figure 2-5
FFH
FFH
Bank 1
C0H
BFH
00H
Set 1, Set 2, Prime Area Register Map
2-8
2 ADDRESS SPACES
Page 1
Page 0
Set 2
Set 2
Page 0
Prime
Space