git.sur5r.net Git - cc65/blob - include/tgi/tgi-kernel.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 tgi-kernel.h                              */
   4 /*                                                                           */
   5 /*                             TGI kernel interface                          */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2002-2009, Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef _TGI_KERNEL_H
  37 #define _TGI_KERNEL_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* TGI kernel variables */
  48 extern void*            tgi_drv;        /* Pointer to driver */
  49 extern unsigned char    tgi_error;      /* Last error code */
  50 extern unsigned char    tgi_gmode;      /* Flag: Graphics mode active */
  51 extern int              tgi_curx;       /* Current drawing cursor X */
  52 extern int              tgi_cury;       /* Current drawing cursor Y */
  53 extern unsigned char    tgi_color;      /* Current drawing color */
  54 extern unsigned         tgi_xres;       /* X resolution of the current mode */
  55 extern unsigned         tgi_yres;       /* Y resolution of the current mode */
  56 extern unsigned char    tgi_colorcount; /* Number of available colors */
  57 extern unsigned char    tgi_pagecount;  /* Number of available screens */
  58 extern unsigned         tgi_aspectratio;/* Aspect ratio as fixed point 8.8 */
  59
  60
  61
  62 /*****************************************************************************/
  63 /*                                     Code                                  */
  64 /*****************************************************************************/
  65
  66
  67
  68 int __fastcall__ tgi_imulround (int rhs, int lhs);
  69 /* Helper function for functions using sine/cosine: Multiply two values, one
  70  * being an 8.8 fixed point one, and return the rounded and scaled result.
  71  */
  72
  73
  74
  75 /* End of tgi-kernel.h */
  76 #endif
  77
  78
  79
  80