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.ft All Information Presented Here is Proprietary to Digital Research
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Appendix C
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Base Page Format
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.he CP/M-8000 Programmer's Guide                   C  Base Page Format
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Table C-1 shows the format of the base page.  The base page 
describes a program's environment.  The Program Load Function 
(59) allocates space for a base page when this function is 
invoked to load an executable command file.  For more details,
on the Program Load Function and command files, refer to the 
appropriate sections in this manual.
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Table C-1. Base Page Format:  Offsets and Contents 
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      Offset                          Contents
      ------                          --------

    0000 - 0003            Lowest address of TPA (from LPB) 

    0004 - 0007            1 + Highest address of TPA 
                           (from LPB)          

    0008 - 000B            Starting address of the Text 
                           Segment

    000C - 000F            Length of Text Segment (bytes)

    0010 - 0013            Starting address of the Data 
                           Segment (initialized data)

    0014 - 0017            Length of Data Segment

    0018 - 001B            Starting address of the bss 
                           (uninitialized data)

    001C - 001F            Length of bss 

    0020 - 0023            Length of free memory after bss

    0024 - 0024            Drive from which the program was 
                           loaded

    0025 - 0037            Reserved, unused

    0038 - 005B            2nd parsed FCB from Command Line

    005C - 007F            1st parsed FCB from Command Line

    0080 - 00FF            Command Tail and Default DMA
                           Buffer
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End of Appendix C
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.he CP/M-8000 Programmer's Guide                     End of Appendix C
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