C P / M   6 8 0 0 0   A s s e m b l e r		Revision 02.03		Page   1
Source File: filetyps.s

   1                               
   2                               *
   3                               *       CP/M-68K table driven file search module
   4                               *       ========================================
   5                               *
   6                               
   7                               *       GLOBALS
   8                               
   9                               
  10                                       .globl _load_tbl                * loader table 
  11                                       .globl _load68k                 * default load program
  12                                       .globl init_tbl                 * initializes table on COLD BOOT
  13                               
  14 00000000                              .text
  15                               *************************************************************************
  16                               *                                                                       *
  17                               *       This is the DUAL PROCESSOR,ROMABLE version of CP/M-68K          *
  18                               *       ======================================================          *
  19                               *                                                                       *
  20                               *       (c) Copyright Digital Research 1983                             *
  21                               *       all rights reserved                                             *
  22                               *                                                                       *
  23                               *************************************************************************
  24                               
  25                               *
  26                               *       The following code allows CP/M-68K to be ROM-able.
  27                               *       -------------------------------------------------
  28                               *
  29                               
  30                               init_tbl:
  31 00000000 23FC0000000000000000         move.l  #typ1,typ1p
  32 0000000A 23FC000000040000000A         move.l  #typ2,typ2p             * init the pointers to the filetypes
  33 00000014 23FC0000000800000014         move.l  #typ3,typ3p
  34 0000001E 23FC0000000C0000001E         move.l  #null,typ4p
  35                               
  36 00000028 23FC0000000000000004         move.l  #_load68k,pgld1
  37 00000032 23FC000000000000000E         move.l  #_load68k,pgld2         * init the pointers to the loaders
  38 0000003C 23FC0000000000000018         move.l  #_load68k,pgld3
  39 00000046 23FC0000000000000022         move.l  #_load68k,pgld4
  40                               
  41 00000050 4E75                         rts
  42 00000000                              .bss
  43                                       .even
  44                               *************************************************************************
  45                               *                                                                       *
  46                               *                         CP/M-68K LOADER TABLE                         *
  47                               *                         =====================                         *
  48                               *                                                                       *
  49                               *-----------------------------------------------------------------------*
  50                               *                                                                       *
  51                               *       STRUCTURE OF A LOADER TABLE ENTRY:                              *
  52                               *       =================================                               *
  53                               *                                                                       *
  54                               *       (1)  LONG WORD pointer to a filetype                            *
  55                               *       (2)  LONG WORD address of the program loader for the above type *
C P / M   6 8 0 0 0   A s s e m b l e r		Revision 02.03		Page   2
Source File: filetyps.s

  56                               *       (3)  BYTE flag #1                                               *
  57                               *       (4)  BYTE flag #2                                               *
  58                               *                                                                       *
  59                               *************************************************************************
  60                               
  61                               
  62                               _load_tbl:
  63 00000000                      typ1p:  .ds.l   1
  64 00000004                      pgld1:  .ds.l   1
  65 00000008                              .ds.b   1
  66 00000009                              .ds.b   1
  67 0000000A                      typ2p:  .ds.l   1
  68 0000000E                      pgld2:  .ds.l   1
  69 00000012                              .ds.b   1
  70 00000013                              .ds.b   1
  71 00000014                      typ3p:  .ds.l   1
  72 00000018                      pgld3:  .ds.l   1
  73 0000001C                              .ds.b   1
  74 0000001D                              .ds.b   1
  75 0000001E                      typ4p:  .ds.l   1
  76 00000022                      pgld4:  .ds.l   1
  77 00000026                              .ds.b   1
  78 00000027                              .ds.b   1
  79                               
  80                               
  81                               *****************************************
  82                               *                                       *
  83                               *            FILETYPE TABLE             *
  84                               *            ==============             *
  85                               *                                       *
  86                               *****************************************
  87                               
  88                               
  89 00000000                              .data
  90                                       .even
  91 00000000 36384B00             typ1:   .dc.b   '68K',0
  92                                       .even
  93 00000004 20202000             typ2:   .dc.b   '   ',0
  94                                       .even
  95 00000008 53554200             typ3:   .dc.b   'SUB',0
  96                                       .even
  97 0000000C 00000000             null:   .dc.l   0
  98 00000010                              .end
C P / M   6 8 0 0 0   A s s e m b l e r		Revision 02.03		Page   3
Source File: filetyps.s

S y m b o l   T a b l e

_load68k  ******** EXT   _load_tb  00000000 BSS   init_tbl  00000000 TEXT  null      0000000C DATA  
pgld1     00000004 BSS   pgld2     0000000E BSS   pgld3     00000018 BSS   pgld4     00000022 BSS   
typ1      00000000 DATA  typ1p     00000000 BSS   typ2      00000004 DATA  typ2p     0000000A BSS   
typ3      00000008 DATA  typ3p     00000014 BSS   typ4p     0000001E BSS