read.me

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This README describes the runtime memory model which is adjusted  
by the target Monitor firmware contained in this directory.  

Note that there may exist several versions in separate subdirectories.

Detailed address information about the target Monitor firmware 
location can be found within the MONITOR.M66 map file in this directory. 

NOTE: Within the RAM address range 00:0000H-0F:FFFFH you will get 
      multiple mirrors of the SRAMs mounted at positions U8 and 
      U9 if their total size is less than 1MB ! (details see below)


This default version of the firmware has the following target system
requirements:

    - nanoMODUL-164 with Logic P533
    - 512KB SRAMs at positions U8 and U9


    |-----------------------------------------------------------| 0F:FFFFH
    |    CODE portion of target Monitor firmware FEC00H-FFFFFH  |
    |-----------------------------|-----------------------------| 0F:EB00H
    |    DATA portion of target Monitor firmware FEA00H-FEBFFH  |
    |-----------------------------------------------------------| 0F:E900H
    |                                                           | 
    |                                                           | 
    |    SRAMs U8 and U9 for application CODE and DATA portions |
    |                                                           |
    |                                                           |
    |-----------------------------------------------------------| 00:0000H


IMPORTANT INFORMATION ABOUT MIRRORING:
======================================

The standard version of the nanoMODUL-164 is equipped with two 128KB SRAMs 
at positions U8 and U9.  This leads to a total amount of 256KB which results 
in:

   - SRAMs U8 and U9 original range at 00:0000H-03:FFFFH
   - 1. mirror at                      04:0000H-07:FFFFH 
   - 2. mirror at                      08:0000H-0B:FFFFH 
   - 3. mirror at                      0C:0000H-0F:FFFFH 

Since the target Monitor itself occupies the range of 0F:E900H-0F:FFFFH and
we have multiple mirrors, the Monitor portions are also mirrored.  So a
mirror of the Monitor portions reduces the usable range for your application
to:

   - Recommended usable range at 00:0000H-03:E8FFH.


In contrary if you have two 512KB SRAMs mounted on your nanoMODUL-164 which
prevents from any mirroring, your usable range is:

   - usable range at 00:0000H-0F:E8FFH.