core:

- removed GE IRQ hack from new gxFIFO;

desmume/src/FIFO.cpp

@@ -162,16 +162,12 @@ void GFX_FIFOsend(u8 cmd, u32 param)
 	if (gxFIFO.tail > 256)
 		gxFIFO.tail = 256;
 
-	// TODO: irq handle
-	//gxstat |= 0x08000000;		// set busy flag
 	gxstat |= (gxFIFO.tail << 16);
 
-#ifdef USE_GEOMETRY_FIFO_EMULATION
-	// TODO irq21
-	gxstat |= 0x02000000;					// this is hack (must be removed later)
-	//if (gxFIFO.tail < 128)
-	//	gxstat |= 0x02000000;
-#else
+	if (gxFIFO.tail < 128)
+		gxstat |= 0x02000000;
+
+#ifndef USE_GEOMETRY_FIFO_EMULATION
 	gxstat |= 0x02000000;					// this is hack (must be removed later)
 #endif
 
@@ -181,6 +177,10 @@ void GFX_FIFOsend(u8 cmd, u32 param)
 BOOL GFX_FIFOrecv(u8 *cmd, u32 *param)
 {
 	u32 gxstat = T1ReadLong(MMU.MMU_MEM[ARMCPU_ARM9][0x40], 0x600);
+	if (gxstat & 0xC0000000)
+	{
+		setIF(0, (1<<21));
+	}
 	gxstat &= 0xF000FFFF;
 	if (gxFIFO.tail == 0)						// empty
 	{

desmume/src/NDSSystem.cpp

@@ -2420,14 +2420,7 @@ void NDS_exec(s32 nb)
 			}
 		}
 
-#ifdef USE_GEOMETRY_FIFO_EMULATION
-		// todo: hack - remove later
-		if(MMU.reg_IE[ARMCPU_ARM9]&(1<<21))
-		{
-			NDS_makeARM9Int(21);		// GX geometry
-			//INFO("IRQ21\n");
-		}
-#else
+#ifndef USE_GEOMETRY_FIFO_EMULATION
 		if(MMU.reg_IE[ARMCPU_ARM9]&(1<<21))
 			NDS_makeARM9Int(21);		// GX geometry
 #endif