Samsung S3C84E5 user manual Prime Register Space, FFH F0H E0H D0H C0H, Set Bank, C0H BFH

Models: S3C84E5

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ADDRESS SPACES

S3C84E5/C84E9/P84E9

 

 

PRIME REGISTER SPACE

The lower 192 bytes (00H–BFH) of the S3C84E5/C84E9/P84E9's two 256-byte register pages is called prime register area. Prime registers can be accessed using any of the seven addressing modes (see Chapter 3, "Addressing Modes.")

The prime register area on page 0 is immediately addressable following a reset. In order to address prime registers on pages 0, or 1 you must set the register page pointer (PP) to the appropriate source and destination values.

FFH

F0H

E0H

D0H

C0H

Set 1

Bank 0

Bank 1

FFH

C0H

BFH

CPU and system control

General-purpose

Peripheral and I/O

00H

Page 1

Page 0

Set 2

Page 0

Prime

Space

Figure 2-4. Set 1, Set 2, Prime Area Register

2-8

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Image 43
Samsung S3C84E5 user manual Prime Register Space, FFH F0H E0H D0H C0H, Set Bank, C0H BFH