2 * Functions for handling omodex and doing other basic graphics stuff.
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7 #include "src/lib/16_head.h"
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8 #include "16/src/lib/bitmap.h"
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10 /* -========================== Types & Macros ==========================- */
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11 #define PAGE_OFFSET(x,y) (((y)<<6)+((y)<<4)+((x)>>2))
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12 //#define PLANE(x) (1<< (x&3))
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13 #define SELECT_ALL_PLANES() outpw(0x03c4, 0xff02)
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16 byte far* data; /* the data for the page */
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17 word dx; /* col we are viewing on the virtual screen */
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18 word dy; /* row we are viewing on the virtual screen */
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19 word width; /* virtual width of the page */
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20 word height; /* virtual height of the page */
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23 /* -============================ Functions =============================- */
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24 /* mode switching, page, and plane functions */
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27 opage_t omodexDefaultPage();
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28 opage_t omodexNextPage(opage_t *p);
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29 void omodexShowPage(opage_t *page);
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30 void omodexPanPage(opage_t *page, int dx, int dy);
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31 void omodexSelectPlane(byte plane);
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32 void omodexClearRegion(opage_t *page, int x, int y, int w, int h, byte color);
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33 void omodexDrawBmp(opage_t *page, int x, int y, bitmap_t *bmp);
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34 void omodexDrawBmpRegion(opage_t *page, int x, int y, int rx, int ry, int rw, int rh, bitmap_t *bmp);
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35 void omodexDrawSprite(opage_t *page, int x, int y, bitmap_t *bmp);
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36 void omodexDrawSpriteRegion(opage_t *page, int x, int y, int rx, int ry, int rw, int rh, bitmap_t *bmp);
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38 /* Palette fade and flash effects */
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39 void omodexFadeOn(word fade, byte *palette);
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40 void omodexFadeOff(word fade, byte *palette);
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41 void omodexFlashOn(word fade, byte *palette);
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42 void omodexFlashOff(word fade, byte *palette);
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44 /* palette loading and saving */
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45 void omodexPalSave(byte *palette);
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46 byte *omodexNewPal();
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47 void omodexLoadPalFile(char *filename, byte **palette);
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48 void omodexSavePalFile(char *filename, byte *palette);
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50 /* fixed palette functions */
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51 void omodexPalBlack();
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52 void omodexPalWhite();
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54 /* utility functions */
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55 void omodexPalUpdate(byte *p);
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56 void omodexWaitBorder();
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57 int US_CheckParm(char *parm,char **strings);
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59 /* -======================= Constants & Vars ==========================- */
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60 extern byte far* VGA; /* The VGA Memory */
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61 #define SCREEN_SEG 0xa000
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62 #define VIDEO_INT 0x10
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63 #define SET_MODE 0x00
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64 #define VGA_256_COLOR_MODE 0x13
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65 #define TEXT_MODE 0x03
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66 #define SCREEN_WIDTH 320
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67 #define SCREEN_HEIGHT 240
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68 #define PAGE_SIZE (word)(SCREEN_WIDTH/4 * SCREEN_HEIGHT)
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70 #define AC_INDEX 0x03c0
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71 #define SC_INDEX 0x03c4
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72 #define SC_DATA 0x03c5
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73 //#define CRTC_INDEX 0x03d4
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74 #define CRTC_DATA 0x03d5
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75 #define GC_INDEX 0x03ce
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76 #define MISC_OUTPUT 0x03c2
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77 #define HIGH_ADDRESS 0x0C
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78 #define LOW_ADDRESS 0x0D
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79 #define VRETRACE 0x08
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80 #define INPUT_STATUS_1 0x03da
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81 #define DISPLAY_ENABLE 0x01
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82 #define MAP_MASK 0x02
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83 #define PAL_READ_REG 0x03C7 /* Color register, read address */
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84 #define PAL_WRITE_REG 0x03C8 /* Color register, write address */
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85 #define PAL_DATA_REG 0x03C9 /* Color register, data port */
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86 #define PAL_SIZE (256 * 3)
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