Intel 80C196NU 用户手册

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4.5.1

Using Registers .......................................................................................................4-12

4.5.2

Addressing 32-bit Operands  ...................................................................................4-12

4.5.3

Addressing 64-bit Operands  ...................................................................................4-12

4.5.4

Linking Subroutines  ................................................................................................4-13

4.6

SOFTWARE PROTECTION FEATURES AND GUIDELINES .................................... 4-14

5.1

MEMORY MAP OVERVIEW.......................................................................................... 5-1

5.2

MEMORY PARTITIONS ................................................................................................ 5-3

5.2.1

External Memory  .......................................................................................................5-5

5.2.2

Program and Special-purpose Memory  ....................................................................5-5

5.2.2.1

Program Memory in Page FFH  ............................................................................5-5

5.2.2.2

Special-purpose Memory  .....................................................................................5-6

5.2.2.3

Reserved Memory Locations  ...............................................................................5-7

5.2.2.4

Interrupt and PTS Vectors ....................................................................................5-7

5.2.2.5

Chip Configuration Bytes  .....................................................................................5-7

5.2.3

Peripheral Special-function Registers (SFRs) ...........................................................5-7

5.2.4

Register File ..............................................................................................................5-9

5.2.4.1

General-purpose Register RAM  .........................................................................5-11

5.2.4.2

Stack Pointer (SP) ..............................................................................................5-11

5.2.4.3

CPU Special-function Registers (SFRs) .............................................................5-12

5.3

WINDOWING............................................................................................................... 5-13

5.3.1

Selecting a Window  ................................................................................................5-14

5.3.2

Addressing a Location Through a Window  .............................................................5-16

5.3.2.1

32-byte Windowing Example ..............................................................................5-18

5.3.2.2

64-byte Windowing Example ..............................................................................5-18

5.3.2.3

128-byte Windowing Example ............................................................................5-18

5.3.2.4

Unsupported Locations Windowing Example (8XC196NP Only) .......................5-19

5.3.2.5

Using the Linker Locator to Set Up a Window ....................................................5-19

5.3.3

Windowing and Addressing Modes .........................................................................5-21

5.4

REMAPPING INTERNAL ROM (83C196NP ONLY) ................................................... 5-22

5.5

FETCHING CODE AND DATA IN THE 1-MBYTE AND 64-KBYTE MODES.............. 5-23

5.5.1

Fetching Instructions  ...............................................................................................5-23

5.5.2

Accessing Data .......................................................................................................5-23

5.5.3

Code Fetches in the 1-Mbyte Mode  ........................................................................5-25

5.5.4

Code Fetches in the 64-Kbyte Mode  ......................................................................5-25

5.5.5

Data Fetches in the 1-Mbyte and 64-Kbyte Modes .................................................5-26

5.6

MEMORY CONFIGURATION EXAMPLES ................................................................. 5-27

5.6.1

Example 1: Using the 64-Kbyte Mode  ....................................................................5-27

5.6.2

Example 2: A 64-Kbyte System with Additional Data Storage  ................................5-29

5.6.3

Example 3: Using 1-Mbyte Mode  ............................................................................5-31