git.sur5r.net Git - cc65/blob - include/_antic.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                _antic.h                                   */
   4 /*                                                                           */
   5 /*                  Internal include file, do not use directly               */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000 Freddy Offenga <taf_offenga@yahoo.com>                           */
  10 /*                                                                           */
  11 /*                                                                           */
  12 /* This software is provided 'as-is', without any expressed or implied       */
  13 /* warranty.  In no event will the authors be held liable for any damages    */
  14 /* arising from the use of this software.                                    */
  15 /*                                                                           */
  16 /* Permission is granted to anyone to use this software for any purpose,     */
  17 /* including commercial applications, and to alter it and redistribute it    */
  18 /* freely, subject to the following restrictions:                            */
  19 /*                                                                           */
  20 /* 1. The origin of this software must not be misrepresented; you must not   */
  21 /*    claim that you wrote the original software. If you use this software   */
  22 /*    in a product, an acknowledgment in the product documentation would be  */
  23 /*    appreciated but is not required.                                       */
  24 /* 2. Altered source versions must be plainly marked as such, and must not   */
  25 /*    be misrepresented as being the original software.                      */
  26 /* 3. This notice may not be removed or altered from any source              */
  27 /*    distribution.                                                          */
  28 /*                                                                           */
  29 /*****************************************************************************/
  30
  31
  32 #ifndef __ANTIC_H
  33 #define __ANTIC_H
  34
  35 /* Define a structure with the antic register offsets */
  36 struct __antic {
  37     unsigned char   dmactl; /* direct memory access control */
  38     unsigned char   chactl; /* character mode control */
  39     unsigned char   dlistl; /* display list pointer low-byte */
  40     unsigned char   dlisth; /* display list pointer high-byte */
  41     unsigned char   hscrol; /* horizontal scroll enable */
  42     unsigned char   vscrol; /* vertical scroll enable */
  43     unsigned char   unuse0; /* unused */
  44     unsigned char   pmbase; /* msb of p/m base address */
  45     unsigned char   unuse1; /* unused */
  46     unsigned char   chbase; /* character base address */
  47     unsigned char   wsync;  /* wait for horizontal synchronization */
  48     unsigned char   vcount; /* vertical line counter */
  49     unsigned char   penh;   /* light pen horizontal position */
  50     unsigned char   penv;   /* light pen vertical position */
  51     unsigned char   nmien;  /* non-maskable interrupt enable */
  52     unsigned char   nmires; /* nmi reset/status */
  53 };
  54
  55 /* End of _antic.h */
  56 #endif /* #ifndef __ANTIC_H */
  57