S Y M B O S   M E M O R Y   M A P
Date: 02.01.2005
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A.) General Memory Usage

The following diagram shows, in which way the different memory banks are used
in SymbOS.

      Bank 0                Bank 1                Bank n
FFFF  +-----------------+   +-----------------+   +-----------------|
      |                 |   |                 |   |                 |
      |                 |   |                 |   |                 |
      | VideoRAM        |   | free            |   | free            |
      |                 |   |                 |   |                 |
      |                 |   |                 |   |                 |
C000  +-----------------|   +-----------------|   +-----------------|
      | SubRoutines     |   |                 |   |                 |
      |                 |   |                 |   |                 |
      | ScreenManager   |   | free            |   | free            |
      |                 |   |                 |   |                 |
      | DesktopManager  |   |                 |   |                 |
8000  +-----------------|   +-----------------|   +-----------------|
      |                 |   |                 |   |                 |
      |                 |   |                 |   |                 |
      | DesktopManager  |   | free            |   | free            |
      |                 |   |                 |   |                 |
      |                 |   |                 |   |                 |
4000  +-----------------|   +-----------------|   +-----------------|
      | DesktopManager  |   |                 |   |                 |
      | SystemManager   |   |                 |   |                 |
      | DeviceManager   |   | FileManager     |   | free            |
      | Kernel          |   |                 |   |                 |
      | KernelJumps     |   | KernelJumps     |   | KernelJumps     |
0000  +-----------------+   +-----------------|   +-----------------|

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B.) Application Memory Usage

The memory inside an application RAM bank (1-n) is used in the following way:
1.) 0000-03FF   Kernel jumps, Kernel banking routines
2.) 0400-FFFF   Application code and internal application data
3.) 0400-3FFF,  Application data used by the screen manager
    4000-7FFF,  (one object has to be inside one 16K block)
    8000-BFFF,
    C000-FFFF
4.) C000-FFFF   Application "transfer" data, used 

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C.) Memory Configurations

The following diagram shows, how the memory is configured during the activity
of a special part in SymbOS.

      DesktopManager        ScreenManager         FileManager           Application
FFFF  +-----------------+   +-----------------+   +-----------------|   +-----------------|
      | Bank n, Block 3 |   | Bank 0, Block 3 |   | Bank 0, Block 3 |   | Bank n, Block 3 |
      | Transfer Ram    |   | Video RAM       |   |                 |   | Trns.,Code,Data |
C000  +-----------------|   +-----------------|   +-----------------|   +-----------------|
      | Bank 0, Block 2 |   | Bank 0, Block 2 |   | Bank 0, Block 2 |   | Bank n, Block 2 |
      |                 |   | ScreenManager   |   |                 |   | Code, Data Ram  |
8000  +-----------------|   +-----------------|   +-----------------|   +-----------------|
      | Bank 0, Block 1 |   | Bank n, Block m |   | Bank 1, Block 0 |   | Bank n, Block 1 |
      | DesktopManager  |   | Data RAM        |   | FileManager     |   | Code, Data Ram  |
4000  +-----------------|   +-----------------|   +-----------------|   +-----------------|
      | Bank 0, Block 0 |   | Bank 0, Block 0 |   | Bank 0, Block 1 |   | Bank n, Block 0 |
      |                 |   |                 |   |                 |   | Code, Data Ram  |
0000  +-----------------+   +-----------------|   +-----------------|   +-----------------|