diff options
Diffstat (limited to 'include/gba')
| -rw-r--r-- | include/gba/io_reg.h | 55 |
1 files changed, 47 insertions, 8 deletions
diff --git a/include/gba/io_reg.h b/include/gba/io_reg.h index f86f2434c..0364c38bc 100644 --- a/include/gba/io_reg.h +++ b/include/gba/io_reg.h @@ -501,12 +501,12 @@ // I/O register fields // DISPCNT -#define DISPCNT_MODE_0 0x0000 -#define DISPCNT_MODE_1 0x0001 -#define DISPCNT_MODE_2 0x0002 -#define DISPCNT_MODE_3 0x0003 -#define DISPCNT_MODE_4 0x0004 -#define DISPCNT_MODE_5 0x0005 +#define DISPCNT_MODE_0 0x0000 // BG0: text, BG1: text, BG2: text, BG3: text +#define DISPCNT_MODE_1 0x0001 // BG0: text, BG1: text, BG2: affine, BG3: off +#define DISPCNT_MODE_2 0x0002 // BG0: off, BG1: off, BG2: affine, BG3: affine +#define DISPCNT_MODE_3 0x0003 // Bitmap mode, 240x160, BGR555 color +#define DISPCNT_MODE_4 0x0004 // Bitmap mode, 240x160, 256 color palette +#define DISPCNT_MODE_5 0x0005 // Bitmap mode, 160x128, BGR555 color #define DISPCNT_OBJ_1D_MAP 0x0040 #define DISPCNT_FORCED_BLANK 0x0080 #define DISPCNT_BG0_ON 0x0100 @@ -527,7 +527,46 @@ #define DISPSTAT_HBLANK_INTR 0x0010 // H-Blank interrupt enabled #define DISPSTAT_VCOUNT_INTR 0x0020 // V-Count interrupt enabled +// BGCNT +#define BGCNT_PRIORITY(n) (n) // Values 0 - 3. Lower priority BGs will be drawn on top of higher priority BGs. +#define BGCNT_CHARBASE(n) ((n) << 2) // Values 0 - 3. Base block for tile pixel data. +#define BGCNT_MOSAIC 0x0040 +#define BGCNT_16COLOR 0x0000 // 4 bits per pixel +#define BGCNT_256COLOR 0x0080 // 8 bits per pixel +#define BGCNT_SCREENBASE(n) ((n) << 8) // Values 0 - 31. Base block for tile map. +#define BGCNT_WRAP 0x2000 // Only affects affine BGs. Text BGs wrap by default. +#define BGCNT_TXT256x256 0x0000 // Internal screen size size of text mode BG in pixels. +#define BGCNT_TXT512x256 0x4000 +#define BGCNT_TXT256x512 0x8000 +#define BGCNT_TXT512x512 0xC000 +#define BGCNT_AFF128x128 0x0000 // Internal screen size size of affine mode BG in pixels. +#define BGCNT_AFF256x256 0x4000 +#define BGCNT_AFF512x512 0x8000 +#define BGCNT_AFF1024x1024 0xC000 + // BLDCNT +// Bits 0-5 select layers for the 1st target +#define BLDCNT_TGT1_BG0 (1 << 0) +#define BLDCNT_TGT1_BG1 (1 << 1) +#define BLDCNT_TGT1_BG2 (1 << 2) +#define BLDCNT_TGT1_BG3 (1 << 3) +#define BLDCNT_TGT1_OBJ (1 << 4) +#define BLDCNT_TGT1_BD (1 << 5) +// Bits 6-7 select the special effect +#define BLDCNT_EFFECT_NONE (0 << 6) // no special effect +#define BLDCNT_EFFECT_BLEND (1 << 6) // 1st+2nd targets mixed (controlled by BLDALPHA) +#define BLDCNT_EFFECT_LIGHTEN (2 << 6) // 1st target becomes whiter (controlled by BLDY) +#define BLDCNT_EFFECT_DARKEN (3 << 6) // 1st target becomes blacker (controlled by BLDY) +// Bits 8-13 select layers for the 2nd target +#define BLDCNT_TGT2_BG0 (1 << 8) +#define BLDCNT_TGT2_BG1 (1 << 9) +#define BLDCNT_TGT2_BG2 (1 << 10) +#define BLDCNT_TGT2_BG3 (1 << 11) +#define BLDCNT_TGT2_OBJ (1 << 12) +#define BLDCNT_TGT2_BD (1 << 13) + +// BLDALPHA +#define BLDALPHA_BLEND(target1, target2) (((target2) << 8) | (target1)) // SOUNDCNT_H #define SOUND_CGB_MIX_QUARTER 0x0000 @@ -627,8 +666,8 @@ #define KEY_INTR_ENABLE 0x0400 #define KEY_OR_INTR 0x0000 #define KEY_AND_INTR 0x8000 - -#define DPAD_ANY ((DPAD_RIGHT | DPAD_LEFT | DPAD_UP | DPAD_DOWN)) +#define DPAD_ANY ((DPAD_RIGHT | DPAD_LEFT | DPAD_UP | DPAD_DOWN)) +#define JOY_EXCL_DPAD 0x030F // interrupt flags #define INTR_FLAG_VBLANK (1 << 0) |