lcd.h

   1
   2
   3 #ifndef __LCD_H__
   4 #define __LCD_H__
   5
   6 #include "defs.h"
   7
   8 struct vissprite
   9 {
  10         byte *buf;
  11         int x;
  12         byte pal, pri, pad[6];
  13 };
  14
  15 struct scan
  16 {
  17         int bg[64];
  18         int wnd[64];
  19         byte buf[256];
  20         byte pal1[128];
  21         un16 pal2[64];
  22         un32 pal4[64];
  23         byte pri[256];
  24         struct vissprite vs[16];
  25         int ns, l, x, y, s, t, u, v, wx, wy, wt, wv;
  26 };
  27
  28 struct obj
  29 {
  30         byte y;
  31         byte x;
  32         byte pat;
  33         byte flags;
  34 };
  35
  36 struct lcd
  37 {
  38         byte vbank[2][8192];
  39         union
  40         {
  41                 byte mem[256];
  42                 struct obj obj[40];
  43         } oam;
  44         byte pal[128];
  45 };
  46
  47 extern struct lcd lcd;
  48 extern struct scan scan;
  49
  50 void updatepatpix();
  51 void tilebuf();
  52 void bg_scan();
  53 void wnd_scan();
  54 void bg_scan_pri();
  55 void wnd_scan_pri();
  56 void bg_scan_color();
  57 void wnd_scan_color();
  58 void spr_count();
  59 void spr_enum();
  60 void spr_scan();
  61 void lcd_begin();
  62 void lcd_refreshline();
  63 void pal_write(int i, byte b);
  64 void pal_write_dmg(int i, int mapnum, byte d);
  65 void vram_write(int a, byte b);
  66 void vram_dirty();
  67 void pal_dirty();
  68 void lcd_reset();
  69
  70 #define LCDC_BIT_BG_EN    (1<<0) /* BG display off or on - CGB: always on */
  71 #define LCDC_BIT_OBJ_EN   (1<<1) /* OBJs off or on */
  72 #define LCDC_BIT_OBJ_SIZE (1<<2) /* OBJ size: 0:8x8 1:8x16 */
  73 #define LCDC_BIT_BG_MAP   (1<<3) /* BG code area 0:9800-9bff, 1:9c00-9fff */
  74 #define LCDC_BIT_TILE_SEL (1<<4) /* BG char data 0:8800-97ff, 1:8000-8fff */
  75 #define LCDC_BIT_WIN_EN   (1<<5) /* WIN off or on */
  76 #define LCDC_BIT_WIN_MAP  (1<<6) /* WIN code area 0:9800-9bff, 1:9c00-9fff */
  77 #define LCDC_BIT_LCD_EN   (1<<7) /* LCD controller off or on */
  78
  79
  80 #endif
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