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  1. /*
  2. Copyright (C) 1996-1997 Id Software, Inc.
  3.  
  4. This program is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU General Public License
  6. as published by the Free Software Foundation; either version 2
  7. of the License, or (at your option) any later version.
  8.  
  9. This program is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
  12.  
  13. See the GNU General Public License for more details.
  14.  
  15. You should have received a copy of the GNU General Public License
  16. along with this program; if not, write to the Free Software
  17. Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18.  
  19. */
  20. //
  21. // vregset.c: video register-setting interpreter
  22. //
  23.  
  24. #include <dos.h>
  25. #include <conio.h>
  26.  
  27. #include "quakedef.h"
  28. #include "vregset.h"
  29.  
  30. //#define outportb      loutportb
  31.  
  32. void loutportb (int port, int val)
  33. {
  34.         printf ("port, val: %x %x\n", port, val);
  35.         getch ();
  36. }
  37.  
  38. /*
  39. ================
  40. VideoRegisterSet
  41. ================
  42. */
  43. void VideoRegisterSet (int *pregset)
  44. {
  45.         int             port, temp0, temp1, temp2;
  46.  
  47.         for ( ;; )
  48.         {
  49.                 switch (*pregset++)
  50.                 {
  51.                         case VRS_END:
  52.                                 return;
  53.  
  54.                         case VRS_BYTE_OUT:
  55.                                 port = *pregset++;
  56.                                 outportb (port, *pregset++);
  57.                                 break;
  58.  
  59.                         case VRS_BYTE_RMW:
  60.                                 port = *pregset++;
  61.                                 temp0 = *pregset++;
  62.                                 temp1 = *pregset++;
  63.                                 temp2 = inportb (port);
  64.                                 temp2 &= temp0;
  65.                                 temp2 |= temp1;
  66.                                 outportb (port, temp2);
  67.                                 break;
  68.  
  69.                         case VRS_WORD_OUT:
  70.                                 port = *pregset++;
  71.                                 outportb (port, *pregset & 0xFF);
  72.                                 outportb (port+1, *pregset >> 8);
  73.                                 pregset++;
  74.                                 break;
  75.  
  76.                         default:
  77.                                 Sys_Error ("VideoRegisterSet: Invalid command\n");
  78.                 }
  79.         }
  80. }
  81.  
  82.