From 4941ef047ed8e813fe6f1da8d6a5a68b77367958 Mon Sep 17 00:00:00 2001
From: RocketRobz <bobesh8@gmail.com>
Date: Wed, 10 Oct 2018 14:39:27 -0600
Subject: [PATCH] Try to fix Guru error

---
 arm9/source/driveOperations.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arm9/source/driveOperations.cpp b/arm9/source/driveOperations.cpp
index d6b1f88..18d37c5 100644
--- a/arm9/source/driveOperations.cpp
+++ b/arm9/source/driveOperations.cpp
@@ -143,8 +143,11 @@ TWL_CODE void ShowGameInfo(const char gameid[], const char gamename[]) {
 
 TWL_CODE bool twl_flashcardMount(void) {
 	if (REG_SCFG_MC != 0x11) {
-		// Reset Slot-1 to allow reading title name and ID
+		setCpuClock(false); //REG_SCFG_CLK = 0x80;	// Set NTR clock speed to avoid potential timing issues
+
 		sysSetCardOwner (BUS_OWNER_ARM9);
+
+		// Reset Slot-1 to allow reading title name and ID
 		disableSlot1();
 		for(int i = 0; i < 25; i++) { swiWaitForVBlank(); }
 		enableSlot1();
@@ -161,7 +164,6 @@ TWL_CODE bool twl_flashcardMount(void) {
 		}
 		memcpy(&nds, (void*)0x02000000, sizeof(nds));*/
 		UpdateCardInfo(&nds, &gameid[0], &gamename[0]);
-		swiWaitForVBlank();
 
 		/*consoleClear();
 		iprintf("REG_SCFG_MC: %x\n", REG_SCFG_MC);
@@ -172,7 +174,6 @@ TWL_CODE bool twl_flashcardMount(void) {
 		}*/
 
 		sysSetCardOwner (BUS_OWNER_ARM7);	// 3DS fix
-		swiWaitForVBlank();
 
 		// Read a DLDI driver specific to the cart
 		if (!memcmp(gamename, "QMATETRIAL", 9) || !memcmp(gamename, "R4DSULTRA", 9)) {
@@ -189,6 +190,8 @@ TWL_CODE bool twl_flashcardMount(void) {
 			fatMountSimple("fat", &io_dldi_data->ioInterface);        
         } 
 
+		setCpuClock(true);
+
 		if (flashcardFound()) {
 			fatGetVolumeLabel("fat", fatLabel);
 			fixLabel(true);