Document some overworld and field effects

1 files changed, 36 insertions, 0 deletions

diff --git a/gflib/io_reg.c b/gflib/io_reg.c
new file mode 100644
index 000000000..44364349d
--- /dev/null
+++ b/gflib/io_reg.c
@@ -0,0 +1,36 @@
+#include "global.h"
+#include "io_reg.h"
+#include "gba/io_reg.h"
+
+static const u32 sUnused[] = {
+    0,
+    0,
+    (1 << 26) | (1 << 3),
+    (1 << 26) | (1 << 3) | (1 << 1),
+    (1 << 26) | (1 << 3) | (1 << 2),
+    (1 << 26) | (1 << 3) | (1 << 2) | (1 << 1),
+    (1 << 26) | (1 << 4),
+    (1 << 26) | (1 << 4) | (1 << 2),
+    (1 << 26) | (1 << 4) | (1 << 3),
+    (1 << 26) | (1 << 4) | (1 << 3) | (1 << 2),
+    (1 << 26) | (1 << 4) | (1 << 1),
+    (1 << 26) | (1 << 4) | (1 << 2) | (1 << 1),
+    (1 << 26) | (1 << 4) | (1 << 3) | (1 << 1),
+    (1 << 26) | (1 << 4) | (1 << 3) | (1 << 2) | (1 << 1),
+    (1 << 25) | (1 << 8), 
+    (1 << 27) | (1 << 10), 
+};
+
+const u16 gOverworldBackgroundLayerFlags[] = {
+    BLDCNT_TGT2_BG0,
+    BLDCNT_TGT2_BG1,
+    BLDCNT_TGT2_BG2,
+    BLDCNT_TGT2_BG3,
+};
+
+const u16 gOrbEffectBackgroundLayerFlags[] = {
+    BLDCNT_TGT1_BG0,
+    BLDCNT_TGT1_BG1,
+    BLDCNT_TGT1_BG2,
+    BLDCNT_TGT1_BG3,
+};