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CPM OPERATING SYSTEMS/CPM 8000 (CPM8K)/P-CP M-Z8K SOURCES/pg/pgmac.tex

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+.bp odd
+.cs 5
+.mt 5
+.mb 6
+.pl 66
+.ll 65
+.po 10
+.hm 2
+.fm 2
+.ft All Information Presented Here is Proprietary to Digital Research
+.he
+.ce 2
+.sh
+Appendix C
+.sp
+.sh
+Base Page Format
+.sp 2
+.he CP/M-8000 Programmer's Guide                   C  Base Page Format
+.pp 5
+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.
+.mb 5
+.fm 1
+.ix base page format
+.sp 2
+.sh
+.ce 
+Table C-1. Base Page Format:  Offsets and Contents 
+.sp 2
+.in 1
+.nf
+      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
+.fi
+.in 0
+.sp 2
+.ce
+End of Appendix C
+.bp
+.mb 6
+.fm 2
+.he CP/M-8000 Programmer's Guide                     End of Appendix C
+.sp 50
+.nx appd
+
+