implement 16 bit r/w IF and DISPCAPCNT (#2061)

src/GPU2D.cpp

@@ -387,6 +387,14 @@ void Unit::Write16(u32 addr, u16 val)
         if (!Num) GPU.GPU3D.SetRenderXPos(val);
         break;
 
+    case 0x064:
+        CaptureCnt = (CaptureCnt & 0xFFFF0000) | (val & 0xEF3F1F1F);
+        return;
+
+    case 0x066:
+        CaptureCnt = (CaptureCnt & 0xFFFF) | ((val << 16) & 0xEF3F1F1F);
+        return;
+
     case 0x068:
         DispFIFO[DispFIFOWritePtr] = val;
         return;

src/NDS.cpp

@@ -2946,6 +2946,8 @@ u16 NDS::ARM9IORead16(u32 addr)
     case 0x04000208: return IME[0];
     case 0x04000210: return IE[0] & 0xFFFF;
     case 0x04000212: return IE[0] >> 16;
+    case 0x04000214: return IF[0] & 0xFFFF;
+    case 0x04000216: return IF[0] >> 16;
 
     case 0x04000240: return GPU.VRAMCNT[0] | (GPU.VRAMCNT[1] << 8);
     case 0x04000242: return GPU.VRAMCNT[2] | (GPU.VRAMCNT[3] << 8);
@@ -3257,6 +3259,9 @@ void NDS::ARM9IOWrite16(u32 addr, u16 val)
 
     case 0x04000060: GPU.GPU3D.Write16(addr, val); return;
 
+    case 0x04000064:
+    case 0x04000066: GPU.GPU2D_A.Write16(addr, val); return;
+
     case 0x04000068:
     case 0x0400006A: GPU.GPU2D_A.Write16(addr, val); return;
 
@@ -3385,6 +3390,8 @@ void NDS::ARM9IOWrite16(u32 addr, u16 val)
     case 0x04000210: IE[0] = (IE[0] & 0xFFFF0000) | val; UpdateIRQ(0); return;
     case 0x04000212: IE[0] = (IE[0] & 0x0000FFFF) | (val << 16); UpdateIRQ(0); return;
     // TODO: what happens when writing to IF this way??
+    case 0x04000214: IF[0] &= ~val; GPU.GPU3D.CheckFIFOIRQ(); UpdateIRQ(0); return;
+    case 0x04000216: IF[0] &= ~(val<<16); GPU.GPU3D.CheckFIFOIRQ(); UpdateIRQ(0); return;
 
     case 0x04000240:
         GPU.MapVRAM_AB(0, val & 0xFF);