Merge branch 'master' into dsi_camera

# Conflicts:
#	src/DSi_I2C.cpp

51 files changed, 352 insertions, 106 deletions

diff --git a/.github/workflows/build-ubuntu-aarch64.yml b/.github/workflows/build-ubuntu-aarch64.yml
index 8ece6f2..6fd59b2 100644
--- a/.github/workflows/build-ubuntu-aarch64.yml
+++ b/.github/workflows/build-ubuntu-aarch64.yml
@@ -20,8 +20,10 @@ jobs:
     - name: Upgrade system
       shell: bash
       working-directory: ${{runner.workspace}}
-      run: |
+      run: | #Fix grub installation error - https://github.com/actions/virtual-environments/issues/1605
         sudo apt update
+        sudo apt-get install grub-efi  
+        sudo update-grub
         sudo apt full-upgrade
     - name: Install dependencies
       shell: bash
@@ -32,7 +34,8 @@ jobs:
         sudo rm /etc/apt/sources.list
         sudo mv /etc/apt/sources.list{.new,}
         sudo apt update
-        sudo apt install {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu libsdl2-dev:arm64 qtbase5-dev:arm64 libslirp-dev:arm64
+        sudo apt install aptitude
+        sudo aptitude install -y {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu libsdl2-dev:arm64 qtbase5-dev:arm64 libslirp-dev:arm64
     - name: Create build environment
       run: mkdir ${{runner.workspace}}/build
     - name: Configure
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6729e73..8b8d699 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,6 +50,12 @@ else()
 	option(ENABLE_LTO "Enable link-time optimization" OFF)
 endif()
 
+option(ENABLE_OGLRENDERER "Enable OpenGL renderer" ON)
+
+if (ENABLE_OGLRENDERER)
+    add_definitions(-DOGLRENDERER_ENABLED)
+endif()
+
 if (CMAKE_BUILD_TYPE STREQUAL Debug)
 	add_compile_options(-Og)
 endif()
diff --git a/README.md b/README.md
index 61532a9..b7ab97a 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ As for the rest, the interface should be pretty straightforward. If you have a q
 * Install dependencies:
 
 ```sh
-sudo apt-get install libgtk-3-dev libcurl4-gnutls-dev libpcap0.8-dev libsdl2-dev qtbase5-dev qtdeclarative5-dev libslirp-dev
+sudo apt-get install cmake libgtk-3-dev libcurl4-gnutls-dev libpcap0.8-dev libsdl2-dev qtbase5-dev qtdeclarative5-dev libslirp-dev
 ```
 
 * Compile:
diff --git a/src/ARM.h b/src/ARM.h
index deacbee..52c971a 100644
--- a/src/ARM.h
+++ b/src/ARM.h
@@ -24,7 +24,10 @@
 #include "types.h"
 #include "NDS.h"
 
-#define ROR(x, n) (((x) >> (n)) | ((x) << (32-(n))))
+inline u32 ROR(u32 x, u32 n)
+{
+    return (x >> (n&0x1F)) | (x << ((32-n)&0x1F));
+}
 
 enum
 {
diff --git a/src/ARMJIT.cpp b/src/ARMJIT.cpp
index 31983f6..c9d2b62 100644
--- a/src/ARMJIT.cpp
+++ b/src/ARMJIT.cpp
@@ -1087,7 +1087,10 @@ void ResetBlockCache()
 
     InvalidLiterals.Clear();
     for (int i = 0; i < ARMJIT_Memory::memregions_Count; i++)
-        memset(FastBlockLookupRegions[i], 0xFF, CodeRegionSizes[i] * sizeof(u64) / 2);
+    {
+        if (FastBlockLookupRegions[i])
+            memset(FastBlockLookupRegions[i], 0xFF, CodeRegionSizes[i] * sizeof(u64) / 2);
+    }
     for (auto it = RestoreCandidates.begin(); it != RestoreCandidates.end(); it++)
         delete it->second;
     RestoreCandidates.clear();
diff --git a/src/ARMJIT_A64/ARMJIT_ALU.cpp b/src/ARMJIT_A64/ARMJIT_ALU.cpp
index 26a89cb..52a2258 100644
--- a/src/ARMJIT_A64/ARMJIT_ALU.cpp
+++ b/src/ARMJIT_A64/ARMJIT_ALU.cpp
@@ -436,7 +436,7 @@ void Compiler::A_Comp_GetOp2(bool S, Op2& op2)
         Comp_AddCycles_C();
 
         u32 shift = (CurInstr.Instr >> 7) & 0x1E;
-        u32 imm = ROR(CurInstr.Instr & 0xFF, shift);
+        u32 imm = ::ROR(CurInstr.Instr & 0xFF, shift);
 
         if (S && shift && (CurInstr.SetFlags & 0x2))
         {
@@ -447,7 +447,7 @@ void Compiler::A_Comp_GetOp2(bool S, Op2& op2)
                 ANDI2R(RCPSR, RCPSR, ~(1 << 29));
         }
 
-        op2 = Op2(ROR(CurInstr.Instr & 0xFF, (CurInstr.Instr >> 7) & 0x1E));    
+        op2 = Op2(imm);    
     }
     else
     {
@@ -523,7 +523,7 @@ void Compiler::A_Comp_ALUMovOp()
                 case ST_LSL: LSL(rd, op2.Reg.Rm, op2.Reg.ShiftAmount); break;
                 case ST_LSR: LSR(rd, op2.Reg.Rm, op2.Reg.ShiftAmount); break;
                 case ST_ASR: ASR(rd, op2.Reg.Rm, op2.Reg.ShiftAmount); break;
-                case ST_ROR: ROR_(rd, op2.Reg.Rm, op2.Reg.ShiftAmount); break;
+                case ST_ROR: ROR(rd, op2.Reg.Rm, op2.Reg.ShiftAmount); break;
                 }
             }
             else
diff --git a/src/ARMJIT_A64/ARMJIT_Compiler.cpp b/src/ARMJIT_A64/ARMJIT_Compiler.cpp
index b046123..80c7f04 100644
--- a/src/ARMJIT_A64/ARMJIT_Compiler.cpp
+++ b/src/ARMJIT_A64/ARMJIT_Compiler.cpp
@@ -76,7 +76,7 @@ void Compiler::A_Comp_MSR()
     if (CurInstr.Instr & (1 << 25))
     {
         val = W0;
-        MOVI2R(val, ROR((CurInstr.Instr & 0xFF), ((CurInstr.Instr >> 7) & 0x1E)));
+        MOVI2R(val, ::ROR((CurInstr.Instr & 0xFF), ((CurInstr.Instr >> 7) & 0x1E)));
     }
     else
     {
diff --git a/src/ARMJIT_A64/ARMJIT_Compiler.h b/src/ARMJIT_A64/ARMJIT_Compiler.h
index 0e7d54c..af7497a 100644
--- a/src/ARMJIT_A64/ARMJIT_Compiler.h
+++ b/src/ARMJIT_A64/ARMJIT_Compiler.h
@@ -1,5 +1,5 @@
-#ifndef ARMJIT_COMPILER_H
-#define ARMJIT_COMPILER_H
+#ifndef ARMJIT_A64_COMPILER_H
+#define ARMJIT_A64_COMPILER_H
 
 #include "../ARM.h"
 #include "../ARMJIT.h"
@@ -266,4 +266,4 @@ public:
 
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/ARMJIT_A64/ARMJIT_LoadStore.cpp b/src/ARMJIT_A64/ARMJIT_LoadStore.cpp
index 6140ffc..86e257a 100644
--- a/src/ARMJIT_A64/ARMJIT_LoadStore.cpp
+++ b/src/ARMJIT_A64/ARMJIT_LoadStore.cpp
@@ -42,7 +42,7 @@ s64 Compiler::RewriteMemAccess(u64 pc)
         return patch.PatchOffset;
     }
     printf("this is a JIT bug! %08x\n", __builtin_bswap32(*(u32*)pc));
-    assert(false);
+    abort();
 }
 
 bool Compiler::Comp_MemLoadLiteral(int size, bool signExtend, int rd, u32 addr)
@@ -65,7 +65,7 @@ bool Compiler::Comp_MemLoadLiteral(int size, bool signExtend, int rd, u32 addr)
     if (size == 32)
     {
         CurCPU->DataRead32(addr & ~0x3, &val);
-        val = ROR(val, (addr & 0x3) << 3);
+        val = ::ROR(val, (addr & 0x3) << 3);
     }
     else if (size == 16)
     {
@@ -151,7 +151,7 @@ void Compiler::Comp_MemAccess(int rd, int rn, Op2 offset, int size, int flags)
     {
         if (offset.Reg.ShiftType == ST_ROR)
         {
-            ROR_(W0, offset.Reg.Rm, offset.Reg.ShiftAmount);
+            ROR(W0, offset.Reg.Rm, offset.Reg.ShiftAmount);
             offset = Op2(W0);
         }
 
@@ -220,7 +220,7 @@ void Compiler::Comp_MemAccess(int rd, int rn, Op2 offset, int size, int flags)
                 if (size == 32)
                 {
                     if (staticAddress & 0x3)
-                        ROR_(rdMapped, W0, (staticAddress & 0x3) << 3);
+                        ROR(rdMapped, W0, (staticAddress & 0x3) << 3);
                     else
                         MOV(rdMapped, W0);
                 }
@@ -807,4 +807,4 @@ void Compiler::T_Comp_LDMIA_STMIA()
     }
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/ARMJIT_Compiler.h b/src/ARMJIT_Compiler.h
index 513c103..25a0210 100644
--- a/src/ARMJIT_Compiler.h
+++ b/src/ARMJIT_Compiler.h
@@ -1,3 +1,6 @@
+#ifndef ARMJIT_COMPILER_H
+#define ARMJIT_COMPILER_H
+
 #if defined(__x86_64__)
 #include "ARMJIT_x64/ARMJIT_Compiler.h"
 #elif defined(__aarch64__)
@@ -9,4 +12,6 @@
 namespace ARMJIT
 {
 extern Compiler* JITCompiler;
-}
\ No newline at end of file
+}
+
+#endif
diff --git a/src/ARMJIT_Memory.cpp b/src/ARMJIT_Memory.cpp
index c5c8f04..d321d2f 100644
--- a/src/ARMJIT_Memory.cpp
+++ b/src/ARMJIT_Memory.cpp
@@ -279,6 +279,7 @@ bool UnmapFromRange(u32 addr, u32 num, u32 offset, u32 size)
 #endif
 }
 
+#ifndef __SWITCH__
 void SetCodeProtectionRange(u32 addr, u32 size, u32 num, int protection)
 {
     u8* dst = (u8*)(num == 0 ? FastMem9Start : FastMem7Start) + addr;
@@ -303,6 +304,7 @@ void SetCodeProtectionRange(u32 addr, u32 size, u32 num, int protection)
     mprotect(dst, size, posixProt);
 #endif
 }
+#endif
 
 struct Mapping
 {
diff --git a/src/ARMJIT_RegisterCache.h b/src/ARMJIT_RegisterCache.h
index feb2d35..b11255e 100644
--- a/src/ARMJIT_RegisterCache.h
+++ b/src/ARMJIT_RegisterCache.h
@@ -61,7 +61,8 @@ public:
             }
         }
 
-        assert("Welp!");
+        printf("this is a JIT bug! LoadRegister failed\n");
+        abort();
     }
 
     void PutLiteral(int reg, u32 val)
diff --git a/src/ARMJIT_x64/ARMJIT_ALU.cpp b/src/ARMJIT_x64/ARMJIT_ALU.cpp
index 57a38c4..511b3b1 100644
--- a/src/ARMJIT_x64/ARMJIT_ALU.cpp
+++ b/src/ARMJIT_x64/ARMJIT_ALU.cpp
@@ -110,7 +110,7 @@ OpArg Compiler::A_Comp_GetALUOp2(bool S, bool& carryUsed)
         Comp_AddCycles_C();
 
         u32 shift = (CurInstr.Instr >> 7) & 0x1E;
-        u32 imm = ROR(CurInstr.Instr & 0xFF, shift);
+        u32 imm = ::ROR(CurInstr.Instr & 0xFF, shift);
 
         carryUsed = false;
         if (S && shift)
@@ -209,7 +209,8 @@ void Compiler::A_Comp_Arith()
         Comp_ArithTriOp(&Compiler::AND, rd, rn, op2, carryUsed, sFlag|opSymmetric|opInvertOp2);
         break;
     default:
-        assert("unimplemented");
+        printf("this is a JIT bug! %04x\n", op);
+        abort();
     }
 
     if (CurInstr.A_Reg(12) == 15)
@@ -493,7 +494,7 @@ OpArg Compiler::Comp_RegShiftReg(int op, Gen::OpArg rs, Gen::OpArg rm, bool S, b
     {
         if (S)
             BT(32, R(RSCRATCH), Imm8(31));
-        ROR_(32, R(RSCRATCH), R(ECX));
+        ROR(32, R(RSCRATCH), R(ECX));
         if (S)
             SETcc(CC_C, R(RSCRATCH2));
     }
@@ -555,7 +556,7 @@ OpArg Compiler::Comp_RegShiftImm(int op, int amount, OpArg rm, bool S, bool& car
     case 3: // ROR
         MOV(32, R(RSCRATCH), rm);
         if (amount > 0)
-            ROR_(32, R(RSCRATCH), Imm8(amount));
+            ROR(32, R(RSCRATCH), Imm8(amount));
         else
         {
             BT(32, R(RCPSR), Imm8(29));
@@ -566,7 +567,7 @@ OpArg Compiler::Comp_RegShiftImm(int op, int amount, OpArg rm, bool S, bool& car
         return R(RSCRATCH);
     }
 
-    assert(false);
+    abort();
 }
 
 void Compiler::T_Comp_ShiftImm()
@@ -779,4 +780,4 @@ void Compiler::T_Comp_RelAddr()
         MOV(32, rd, Imm32((R15 & ~2) + offset));
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/ARMJIT_x64/ARMJIT_Compiler.cpp b/src/ARMJIT_x64/ARMJIT_Compiler.cpp
index 1fdbaf8..c6419c9 100644
--- a/src/ARMJIT_x64/ARMJIT_Compiler.cpp
+++ b/src/ARMJIT_x64/ARMJIT_Compiler.cpp
@@ -106,7 +106,7 @@ void Compiler::A_Comp_MSR()
     Comp_AddCycles_C();
 
     OpArg val = CurInstr.Instr & (1 << 25)
-        ? Imm32(ROR((CurInstr.Instr & 0xFF), ((CurInstr.Instr >> 7) & 0x1E)))
+        ? Imm32(::ROR((CurInstr.Instr & 0xFF), ((CurInstr.Instr >> 7) & 0x1E)))
         : MapReg(CurInstr.A_Reg(0));
 
     u32 mask = 0;
diff --git a/src/ARMJIT_x64/ARMJIT_Compiler.h b/src/ARMJIT_x64/ARMJIT_Compiler.h
index 9a64d09..3e900c3 100644
--- a/src/ARMJIT_x64/ARMJIT_Compiler.h
+++ b/src/ARMJIT_x64/ARMJIT_Compiler.h
@@ -1,5 +1,5 @@
-#ifndef ARMJIT_COMPILER_H
-#define ARMJIT_COMPILER_H
+#ifndef ARMJIT_X64_COMPILER_H
+#define ARMJIT_X64_COMPILER_H
 
 #include "../dolphin/x64Emitter.h"
 
@@ -252,4 +252,4 @@ public:
 
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/ARMJIT_x64/ARMJIT_LoadStore.cpp b/src/ARMJIT_x64/ARMJIT_LoadStore.cpp
index 57d98cc..8b4e8fe 100644
--- a/src/ARMJIT_x64/ARMJIT_LoadStore.cpp
+++ b/src/ARMJIT_x64/ARMJIT_LoadStore.cpp
@@ -39,7 +39,7 @@ s32 Compiler::RewriteMemAccess(u64 pc)
         return patch.Offset;
     }
 
-    printf("this is a JIT bug %x\n", pc);
+    printf("this is a JIT bug %llx\n", pc);
     abort();
 }
 
@@ -73,7 +73,7 @@ bool Compiler::Comp_MemLoadLiteral(int size, bool signExtend, int rd, u32 addr)
     if (size == 32)
     {
         CurCPU->DataRead32(addr & ~0x3, &val);
-        val = ROR(val, (addr & 0x3) << 3);
+        val = ::ROR(val, (addr & 0x3) << 3);
     }
     else if (size == 16)
     {
@@ -225,13 +225,13 @@ void Compiler::Comp_MemAccess(int rd, int rn, const Op2& op2, int size, int flag
                 if (addrIsStatic)
                 {
                     if (staticAddress & 0x3)
-                        ROR_(32, rdMapped, Imm8((staticAddress & 0x3) * 8));
+                        ROR(32, rdMapped, Imm8((staticAddress & 0x3) * 8));
                 }
                 else
                 {
                     AND(32, R(RSCRATCH3), Imm8(0x3));
                     SHL(32, R(RSCRATCH3), Imm8(3));
-                    ROR_(32, rdMapped, R(RSCRATCH3));
+                    ROR(32, rdMapped, R(RSCRATCH3));
                 }
             }
         }
@@ -270,7 +270,7 @@ void Compiler::Comp_MemAccess(int rd, int rn, const Op2& op2, int size, int flag
                 {
                     MOV(32, rdMapped, R(RSCRATCH));
                     if (staticAddress & 0x3)
-                        ROR_(32, rdMapped, Imm8((staticAddress & 0x3) * 8));
+                        ROR(32, rdMapped, Imm8((staticAddress & 0x3) * 8));
                 }
                 else
                 {
@@ -819,4 +819,4 @@ void Compiler::T_Comp_LDMIA_STMIA()
         ADD(32, rb, Imm8(offset));
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 8839fc2..d6c3897 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -26,17 +26,12 @@ add_library(core STATIC
 	FIFO.h
 	GBACart.cpp
 	GPU.cpp
-	GPU_OpenGL.cpp
-	GPU_OpenGL_shaders.h
 	GPU2D.cpp
 	GPU3D.cpp
-	GPU3D_OpenGL.cpp
-	GPU3D_OpenGL_shaders.h
 	GPU3D_Soft.cpp
 	melonDLDI.h
 	NDS.cpp
 	NDSCart.cpp
-	OpenGLSupport.cpp
 	Platform.h
 	ROMList.h
 	RTC.cpp
@@ -52,6 +47,16 @@ add_library(core STATIC
 	xxhash/xxhash.c
 )
 
+if (ENABLE_OGLRENDERER)
+	target_sources(core PRIVATE
+		GPU_OpenGL.cpp
+		GPU_OpenGL_shaders.h
+		GPU3D_OpenGL.cpp
+		GPU3D_OpenGL_shaders.h
+		OpenGLSupport.cpp
+	)
+endif()
+
 if (ENABLE_JIT)
 	enable_language(ASM)
 
@@ -95,8 +100,16 @@ if (ENABLE_JIT)
 	endif()
 endif()
 
-if (WIN32)
-	target_link_libraries(core ole32 comctl32 ws2_32 opengl32)
+if (ENABLE_OGLRENDERER)
+	if (WIN32)
+		target_link_libraries(core ole32 comctl32 ws2_32 opengl32)
+	else()
+		target_link_libraries(core GL EGL)
+	endif()
 else()
-	target_link_libraries(core GL EGL)
-endif()
+	if (WIN32)
+		target_link_libraries(core ole32 comctl32 ws2_32)
+	else()
+		target_link_libraries(core)
+	endif()
+endif()
\ No newline at end of file
diff --git a/src/Config.cpp b/src/Config.cpp
index 2c5fd2c..341b14c 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -46,7 +46,7 @@ int RandomizeMAC;
 #ifdef JIT_ENABLED
 int JIT_Enable = false;
 int JIT_MaxBlockSize = 32;
-int JIT_BranchOptimisations = 2;
+int JIT_BranchOptimisations = true;
 int JIT_LiteralOptimisations = true;
 int JIT_FastMemory = true;
 #endif
@@ -71,7 +71,7 @@ ConfigEntry ConfigFile[] =
 #ifdef JIT_ENABLED
     {"JIT_Enable", 0, &JIT_Enable, 0, NULL, 0},
     {"JIT_MaxBlockSize", 0, &JIT_MaxBlockSize, 32, NULL, 0},
-    {"JIT_BranchOptimisations", 0, &JIT_BranchOptimisations, 2, NULL, 0},
+    {"JIT_BranchOptimisations", 0, &JIT_BranchOptimisations, 1, NULL, 0},
     {"JIT_LiteralOptimisations", 0, &JIT_LiteralOptimisations, 1, NULL, 0},
     {"JIT_FastMemory", 0, &JIT_FastMemory, 1, NULL, 0},
 #endif
@@ -169,7 +169,7 @@ void Save()
         if (entry->Type == 0)
             fprintf(f, "%s=%d\n", entry->Name, *(int*)entry->Value);
         else
-            fprintf(f, "%s=%s\n", entry->Name, entry->Value);
+            fprintf(f, "%s=%s\n", entry->Name, (char*)entry->Value);
 
         entry++;
     }
diff --git a/src/DMA.cpp b/src/DMA.cpp
index cd2df45..18b8a2f 100644
--- a/src/DMA.cpp
+++ b/src/DMA.cpp
@@ -73,6 +73,8 @@ void DMA::Reset()
     SrcAddrInc = 0;
     DstAddrInc = 0;
 
+    Stall = false;
+
     Running = false;
     InProgress = false;
 
@@ -111,8 +113,8 @@ void DMA::DoSavestate(Savestate* file)
     file->Var32(&DstAddrInc);
 
     file->Var32(&Running);
-    file->Var32((u32*)&InProgress);
-    file->Var32((u32*)&IsGXFIFODMA);
+    file->Bool32(&InProgress);
+    file->Bool32(&IsGXFIFODMA);
 }
 
 void DMA::WriteCnt(u32 val)
diff --git a/src/DSi.cpp b/src/DSi.cpp
index 259a447..0e62f5b 100644
--- a/src/DSi.cpp
+++ b/src/DSi.cpp
@@ -1740,7 +1740,7 @@ u8 ARM7IORead8(u32 addr)
     case 0x04004501: return DSi_I2C::Cnt;
 
     case 0x04004D00: if (SCFG_BIOS & (1<<10)) return 0; return ConsoleID & 0xFF;
-    case 0x04004fD01: if (SCFG_BIOS & (1<<10)) return 0; return (ConsoleID >> 8) & 0xFF;
+    case 0x04004D01: if (SCFG_BIOS & (1<<10)) return 0; return (ConsoleID >> 8) & 0xFF;
     case 0x04004D02: if (SCFG_BIOS & (1<<10)) return 0; return (ConsoleID >> 16) & 0xFF;
     case 0x04004D03: if (SCFG_BIOS & (1<<10)) return 0; return (ConsoleID >> 24) & 0xFF;
     case 0x04004D04: if (SCFG_BIOS & (1<<10)) return 0; return (ConsoleID >> 32) & 0xFF;
diff --git a/src/DSi_I2C.cpp b/src/DSi_I2C.cpp
index faa3d16..76664e5 100644
--- a/src/DSi_I2C.cpp
+++ b/src/DSi_I2C.cpp
@@ -50,7 +50,7 @@ void Reset()
     Registers[0x10] = 0x00; // power btn
     Registers[0x11] = 0x00; // reset
     Registers[0x12] = 0x00; // power btn tap
-    Registers[0x20] = 0x83; // battery
+    Registers[0x20] = 0x8F; // battery
     Registers[0x21] = 0x07;
     Registers[0x30] = 0x13;
     Registers[0x31] = 0x00; // camera power
@@ -189,6 +189,8 @@ void WriteCnt(u8 val)
             case 0x4A: Data = DSi_BPTWL::Read(islast); break;
             case 0x78: Data = DSi_Camera0->I2C_Read(islast); break;
             case 0x7A: Data = DSi_Camera1->I2C_Read(islast); break;
+            case 0xA0:
+            case 0xE0: Data = 0xFF; break;
             default:
                 printf("I2C: read on unknown device %02X, cnt=%02X, data=%02X, last=%d\n", Device, val, 0, islast);
                 Data = 0xFF;
@@ -213,6 +215,8 @@ void WriteCnt(u8 val)
                 case 0x4A: DSi_BPTWL::Start(); break;
                 case 0x78: DSi_Camera0->I2C_Start(); break;
                 case 0x7A: DSi_Camera1->I2C_Start(); break;
+                case 0xA0:
+                case 0xE0: ack = false; break;
                 default:
                     printf("I2C: %s start on unknown device %02X\n", (Data&0x01)?"read":"write", Device);
                     ack = false;
@@ -228,6 +232,8 @@ void WriteCnt(u8 val)
                 case 0x4A: DSi_BPTWL::Write(Data, islast); break;
                 case 0x78: DSi_Camera0->I2C_Write(Data, islast); break;
                 case 0x7A: DSi_Camera1->I2C_Write(Data, islast); break;
+                case 0xA0:
+                case 0xE0: ack = false; break;
                 default:
                     printf("I2C: write on unknown device %02X, cnt=%02X, data=%02X, last=%d\n", Device, val, Data, islast);
                     ack = false;
diff --git a/src/DSi_SD.cpp b/src/DSi_SD.cpp
index 45a597b..de82edb 100644
--- a/src/DSi_SD.cpp
+++ b/src/DSi_SD.cpp
@@ -778,6 +778,23 @@ void DSi_MMCStorage::SendCMD(u8 cmd, u32 param)
         Host->SendResponse(CSR, true);
         return;
 
+    case 1: // SEND_OP_COND
+        // CHECKME!!
+        // also TODO: it's different for the SD card
+        if (Internal)
+        {
+            param &= ~(1<<30);
+            OCR &= 0xBF000000;
+            OCR |= (param & 0x40FFFFFF);
+            Host->SendResponse(OCR, true);
+            SetState(0x01);
+        }
+        else
+        {
+            printf("CMD1 on SD card!!\n");
+        }
+        return;
+
     case 2:
     case 10: // get CID
         Host->SendResponse(*(u32*)&CID[12], false);
@@ -801,6 +818,11 @@ void DSi_MMCStorage::SendCMD(u8 cmd, u32 param)
         }
         return;
 
+    case 6: // MMC: 'SWITCH'
+        // TODO!
+        Host->SendResponse(CSR, true);
+        return;
+
     case 7: // select card (by RCA)
         Host->SendResponse(CSR, true);
         return;
diff --git a/src/DSi_SD.h b/src/DSi_SD.h
index 30da6c7..43f5a98 100644
--- a/src/DSi_SD.h
+++ b/src/DSi_SD.h
@@ -103,7 +103,7 @@ class DSi_SDDevice
 {
 public:
     DSi_SDDevice(DSi_SDHost* host) { Host = host; IRQ = false; }
-    ~DSi_SDDevice() {}
+    virtual ~DSi_SDDevice() {}
 
     virtual void Reset() = 0;
 
diff --git a/src/GPU.cpp b/src/GPU.cpp
index 29867db..7989750 100644
--- a/src/GPU.cpp
+++ b/src/GPU.cpp
@@ -280,6 +280,7 @@ void AssignFramebuffers()
 
 void InitRenderer(int renderer)
 {
+#ifdef OGLRENDERER_ENABLED
     if (renderer == 1)
     {
         if (!GLCompositor::Init())
@@ -292,8 +293,8 @@ void InitRenderer(int renderer)
             renderer = 0;
         }
     }
-
-    if (renderer == 0)
+    else
+#endif
     {
         GPU3D::SoftRenderer::Init();
     }
@@ -308,11 +309,13 @@ void DeInitRenderer()
     {
         GPU3D::SoftRenderer::DeInit();
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GPU3D::GLRenderer::DeInit();
         GLCompositor::DeInit();
     }
+#endif
 }
 
 void ResetRenderer()
@@ -321,11 +324,13 @@ void ResetRenderer()
     {
         GPU3D::SoftRenderer::Reset();
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GLCompositor::Reset();
         GPU3D::GLRenderer::Reset();
     }
+#endif
 }
 
 void SetRenderSettings(int renderer, RenderSettings& settings)
@@ -364,11 +369,13 @@ void SetRenderSettings(int renderer, RenderSettings& settings)
     {
         GPU3D::SoftRenderer::SetRenderSettings(settings);
     }
+#ifdef OGLRENDERER_ENABLED
     else
     {
         GLCompositor::SetRenderSettings(settings);
         GPU3D::GLRenderer::SetRenderSettings(settings);
     }
+#endif
 }
 
 
@@ -1055,7 +1062,9 @@ void StartScanline(u32 line)
             GPU2D_B->VBlank();
             GPU3D::VBlank();
 
+#ifdef OGLRENDERER_ENABLED
             if (Accelerated) GLCompositor::RenderFrame();
+#endif
         }
         else if (VCount == 144)
         {
diff --git a/src/GPU.h b/src/GPU.h
index c7d25ec..1564ef7 100644
--- a/src/GPU.h
+++ b/src/GPU.h
@@ -437,6 +437,7 @@ void SetDispStat(u32 cpu, u16 val);
 
 void SetVCount(u16 val);
 
+#ifdef OGLRENDERER_ENABLED
 namespace GLCompositor
 {
 
@@ -450,6 +451,7 @@ void RenderFrame();
 void BindOutputTexture();
 
 }
+#endif
 
 }
 
diff --git a/src/GPU2D.cpp b/src/GPU2D.cpp
index 2c3086c..7774c65 100644
--- a/src/GPU2D.cpp
+++ b/src/GPU2D.cpp
@@ -102,6 +102,7 @@ GPU2D::~GPU2D()
 
 void GPU2D::Reset()
 {
+    Enabled = false;
     DispCnt = 0;
     memset(BGCnt, 0, 4*2);
     memset(BGXPos, 0, 4*2);
@@ -814,7 +815,6 @@ void GPU2D::DrawScanline(u32 line)
             int i = 0;
             for (; i < (stride & ~1); i+=2)
                 *(u64*)&dst[i] = *(u64*)&BGOBJLine[i];
-            if (stride & 1) dst[i] = BGOBJLine[i];
         }
         break;
 
@@ -949,6 +949,7 @@ void GPU2D::VBlankEnd()
     //OBJMosaicY = 0;
     //OBJMosaicYCount = 0;
 
+#ifdef OGLRENDERER_ENABLED
     if (Accelerated)
     {
         if ((Num == 0) && (CaptureCnt & (1<<31)) && (((CaptureCnt >> 29) & 0x3) != 1))
@@ -956,6 +957,7 @@ void GPU2D::VBlankEnd()
             GPU3D::GLRenderer::PrepareCaptureFrame();
         }
     }
+#endif
 }
 
 
diff --git a/src/GPU3D.cpp b/src/GPU3D.cpp
index d9d6ba8..74debfe 100644
--- a/src/GPU3D.cpp
+++ b/src/GPU3D.cpp
@@ -470,7 +470,7 @@ void DoSavestate(Savestate* file)
         file->VarArray(vtx->Color, sizeof(s32)*3);
         file->VarArray(vtx->TexCoords, sizeof(s16)*2);
 
-        file->Var32((u32*)&vtx->Clipped);
+        file->Bool32(&vtx->Clipped);
 
         file->VarArray(vtx->FinalPosition, sizeof(s32)*2);
         file->VarArray(vtx->FinalColor, sizeof(s32)*3);
@@ -507,7 +507,7 @@ void DoSavestate(Savestate* file)
         file->VarArray(vtx->Color, sizeof(s32)*3);
         file->VarArray(vtx->TexCoords, sizeof(s16)*2);
 
-        file->Var32((u32*)&vtx->Clipped);
+        file->Bool32(&vtx->Clipped);
 
         file->VarArray(vtx->FinalPosition, sizeof(s32)*2);
         file->VarArray(vtx->FinalColor, sizeof(s32)*3);
@@ -545,17 +545,17 @@ void DoSavestate(Savestate* file)
 
         file->VarArray(poly->FinalZ, sizeof(s32)*10);
         file->VarArray(poly->FinalW, sizeof(s32)*10);
-        file->Var32((u32*)&poly->WBuffer);
+        file->Bool32(&poly->WBuffer);
 
         file->Var32(&poly->Attr);
         file->Var32(&poly->TexParam);
         file->Var32(&poly->TexPalette);
 
-        file->Var32((u32*)&poly->FacingView);
-        file->Var32((u32*)&poly->Translucent);
+        file->Bool32(&poly->FacingView);
+        file->Bool32(&poly->Translucent);
 
-        file->Var32((u32*)&poly->IsShadowMask);
-        file->Var32((u32*)&poly->IsShadow);
+        file->Bool32(&poly->IsShadowMask);
+        file->Bool32(&poly->IsShadow);
 
         if (file->IsAtleastVersion(4, 1))
             file->Var32((u32*)&poly->Type);
@@ -2528,13 +2528,19 @@ void VBlank()
 void VCount215()
 {
     if (GPU::Renderer == 0) SoftRenderer::RenderFrame();
+#ifdef OGLRENDERER_ENABLED
     else                    GLRenderer::RenderFrame();
+#endif
 }
 
 u32* GetLine(int line)
 {
     if (GPU::Renderer == 0) return SoftRenderer::GetLine(line);
+#ifdef OGLRENDERER_ENABLED
     else                    return GLRenderer::GetLine(line);
+#else
+    return NULL;
+#endif
 }
 
 
diff --git a/src/GPU3D.h b/src/GPU3D.h
index 71f069d..c69adde 100644
--- a/src/GPU3D.h
+++ b/src/GPU3D.h
@@ -139,6 +139,7 @@ u32* GetLine(int line);
 
 }
 
+#ifdef OGLRENDERER_ENABLED
 namespace GLRenderer
 {
 
@@ -154,6 +155,7 @@ u32* GetLine(int line);
 void SetupAccelFrame();
 
 }
+#endif
 
 }
 
diff --git a/src/NDS.cpp b/src/NDS.cpp
index 90eaac5..5c368e3 100644
--- a/src/NDS.cpp
+++ b/src/NDS.cpp
@@ -775,7 +775,7 @@ bool DoSavestate(Savestate* file)
 
     file->Var8(&WRAMCnt);
 
-    file->Var32((u32*)&RunningGame);
+    file->Bool32(&RunningGame);
 
     if (!file->Saving)
     {
@@ -1124,6 +1124,11 @@ void MicInputFrame(s16* data, int samples)
     return SPI_TSC::MicInputFrame(data, samples);
 }
 
+int ImportSRAM(u8* data, u32 length)
+{
+    return NDSCart::ImportSRAM(data, length);
+}
+
 
 void Halt()
 {
@@ -2996,6 +3001,7 @@ u32 ARM9IORead32(u32 addr)
     case 0x04000130: return (KeyInput & 0xFFFF) | (KeyCnt << 16);
 
     case 0x04000180: return IPCSync9;
+    case 0x04000184: return ARM9IORead16(addr);
 
     case 0x040001A0: return NDSCart::SPICnt | (NDSCart::ReadSPIData() << 16);
     case 0x040001A4: return NDSCart::ROMCnt;
@@ -3373,10 +3379,11 @@ void ARM9IOWrite32(u32 addr, u32 val)
     case 0x04000130:
         KeyCnt = val >> 16;
         return;
+
     case 0x04000180:
+    case 0x04000184:
         ARM9IOWrite16(addr, val);
         return;
-
     case 0x04000188:
         if (IPCFIFOCnt9 & 0x8000)
         {
@@ -3635,6 +3642,7 @@ u32 ARM7IORead32(u32 addr)
     case 0x04000138: return RTC::Read();
 
     case 0x04000180: return IPCSync7;
+    case 0x04000184: return ARM7IORead16(addr);
 
     case 0x040001A0: return NDSCart::SPICnt | (NDSCart::ReadSPIData() << 16);
     case 0x040001A4: return NDSCart::ROMCnt;
@@ -3935,6 +3943,7 @@ void ARM7IOWrite32(u32 addr, u32 val)
     case 0x04000138: RTC::Write(val & 0xFFFF, false); return;
 
     case 0x04000180:
+    case 0x04000184:
         ARM7IOWrite16(addr, val);
         return;
     case 0x04000188:
@@ -3979,6 +3988,11 @@ void ARM7IOWrite32(u32 addr, u32 val)
     case 0x040001B0: *(u32*)&ROMSeed0[8] = val; return;
     case 0x040001B4: *(u32*)&ROMSeed1[8] = val; return;
 
+    case 0x040001C0:
+        SPI::WriteCnt(val & 0xFFFF);
+        SPI::WriteData((val >> 16) & 0xFF);
+        return;
+
     case 0x04000208: IME[1] = val & 0x1; UpdateIRQ(1); return;
     case 0x04000210: IE[1] = val; UpdateIRQ(1); return;
     case 0x04000214: IF[1] &= ~val; UpdateIRQ(1); return;
diff --git a/src/NDS.h b/src/NDS.h
index a66dde5..89ef12f 100644
--- a/src/NDS.h
+++ b/src/NDS.h
@@ -212,6 +212,8 @@ void SetLidClosed(bool closed);
 
 void MicInputFrame(s16* data, int samples);
 
+int ImportSRAM(u8* data, u32 length);
+
 void ScheduleEvent(u32 id, bool periodic, s32 delay, void (*func)(u32), u32 param);
 void CancelEvent(u32 id);
 
diff --git a/src/NDSCart.cpp b/src/NDSCart.cpp
index 6abfc7c..077bf48 100644
--- a/src/NDSCart.cpp
+++ b/src/NDSCart.cpp
@@ -1034,6 +1034,19 @@ void RelocateSave(const char* path, bool write)
     NDSCart_SRAM::RelocateSave(path, write);
 }
 
+int ImportSRAM(const u8* data, u32 length)
+{
+    memcpy(NDSCart_SRAM::SRAM, data, std::min(length, NDSCart_SRAM::SRAMLength));
+    FILE* f = Platform::OpenFile(NDSCart_SRAM::SRAMPath, "wb");
+    if (f)
+    {
+        fwrite(NDSCart_SRAM::SRAM, NDSCart_SRAM::SRAMLength, 1, f);
+        fclose(f);
+    }
+
+    return length - NDSCart_SRAM::SRAMLength;
+}
+
 void ResetCart()
 {
     // CHECKME: what if there is a transfer in progress?
diff --git a/src/NDSCart.h b/src/NDSCart.h
index a759c15..9fe916d 100644
--- a/src/NDSCart.h
+++ b/src/NDSCart.h
@@ -48,6 +48,8 @@ void DecryptSecureArea(u8* out);
 bool LoadROM(const char* path, const char* sram, bool direct);
 void RelocateSave(const char* path, bool write);
 
+int ImportSRAM(const u8* data, u32 length);
+
 void ResetCart();
 
 void WriteROMCnt(u32 val);
diff --git a/src/RTC.cpp b/src/RTC.cpp
index ba51dff..aff3dd3 100644
--- a/src/RTC.cpp
+++ b/src/RTC.cpp
@@ -16,6 +16,9 @@
     with melonDS. If not, see http://www.gnu.org/licenses/.
 */
 
+// Required by MinGW to enable localtime_r in time.h
+#define _POSIX_THREAD_SAFE_FUNCTIONS
+
 #include <stdio.h>
 #include <string.h>
 #include <time.h>
@@ -125,31 +128,29 @@ void ByteIn(u8 val)
 
             case 0x20:
                 {
-                    time_t timestamp;
-                    struct tm* timedata;
-                    time(&timestamp);
-                    timedata = localtime(&timestamp);
-
-                    Output[0] = BCD(timedata->tm_year - 100);
-                    Output[1] = BCD(timedata->tm_mon + 1);
-                    Output[2] = BCD(timedata->tm_mday);
-                    Output[3] = BCD(timedata->tm_wday);
-                    Output[4] = BCD(timedata->tm_hour);
-                    Output[5] = BCD(timedata->tm_min);
-                    Output[6] = BCD(timedata->tm_sec);
+                    time_t timestamp = time(NULL);
+                    struct tm timedata;
+                    localtime_r(&timestamp, &timedata);
+
+                    Output[0] = BCD(timedata.tm_year - 100);
+                    Output[1] = BCD(timedata.tm_mon + 1);
+                    Output[2] = BCD(timedata.tm_mday);
+                    Output[3] = BCD(timedata.tm_wday);
+                    Output[4] = BCD(timedata.tm_hour);
+                    Output[5] = BCD(timedata.tm_min);
+                    Output[6] = BCD(timedata.tm_sec);
                 }
                 break;
 
             case 0x60:
                 {
-                    time_t timestamp;
-                    struct tm* timedata;
-                    time(&timestamp);
-                    timedata = localtime(&timestamp);
-
-                    Output[0] = BCD(timedata->tm_hour);
-                    Output[1] = BCD(timedata->tm_min);
-                    Output[2] = BCD(timedata->tm_sec);
+                    time_t timestamp = time(NULL);
+                    struct tm timedata;
+                    localtime_r(&timestamp, &timedata);
+
+                    Output[0] = BCD(timedata.tm_hour);
+                    Output[1] = BCD(timedata.tm_min);
+                    Output[2] = BCD(timedata.tm_sec);
                 }
                 break;
 
diff --git a/src/Savestate.cpp b/src/Savestate.cpp
index 0337ff2..ba8ffd9 100644
--- a/src/Savestate.cpp
+++ b/src/Savestate.cpp
@@ -261,6 +261,22 @@ void Savestate::Var64(u64* var)
     }
 }
 
+void Savestate::Bool32(bool* var)
+{
+    // for compability
+    if (Saving)
+    {
+        u32 val = *var;
+        Var32(&val);
+    }
+    else
+    {
+        u32 val;
+        Var32(&val);
+        *var = val != 0;
+    }
+}
+
 void Savestate::VarArray(void* data, u32 len)
 {
     if (Error) return;
@@ -273,4 +289,4 @@ void Savestate::VarArray(void* data, u32 len)
     {
         fread(data, len, 1, file);
     }
-}
+}
\ No newline at end of file
diff --git a/src/Savestate.h b/src/Savestate.h
index a5447b3..c3c2e1d 100644
--- a/src/Savestate.h
+++ b/src/Savestate.h
@@ -46,6 +46,8 @@ public:
     void Var32(u32* var);
     void Var64(u64* var);
 
+    void Bool32(bool* var);
+
     void VarArray(void* data, u32 len);
 
     bool IsAtleastVersion(u32 major, u32 minor)
diff --git a/src/Wifi.cpp b/src/Wifi.cpp
index 8a06041..2957007 100644
--- a/src/Wifi.cpp
+++ b/src/Wifi.cpp
@@ -237,7 +237,7 @@ void DoSavestate(Savestate* file)
 
     file->Var64(&USCounter);
     file->Var64(&USCompare);
-    file->Var32((u32*)&BlockBeaconIRQ14);
+    file->Bool32(&BlockBeaconIRQ14);
 
     file->Var32(&ComStatus);
     file->Var32(&TXCurSlot);
diff --git a/src/dolphin/Arm64Emitter.cpp b/src/dolphin/Arm64Emitter.cpp
index 97c93ba..289b20c 100644
--- a/src/dolphin/Arm64Emitter.cpp
+++ b/src/dolphin/Arm64Emitter.cpp
@@ -1631,7 +1631,7 @@ void ARM64XEmitter::ASR(ARM64Reg Rd, ARM64Reg Rm, int shift)
   int bits = Is64Bit(Rd) ? 64 : 32;
   SBFM(Rd, Rm, shift, bits - 1);
 }
-void ARM64XEmitter::ROR_(ARM64Reg Rd, ARM64Reg Rm, int shift)
+void ARM64XEmitter::ROR(ARM64Reg Rd, ARM64Reg Rm, int shift)
 {
   EXTR(Rd, Rm, Rm, shift);
 }
diff --git a/src/dolphin/Arm64Emitter.h b/src/dolphin/Arm64Emitter.h
index 4c49502..3da3912 100644
--- a/src/dolphin/Arm64Emitter.h
+++ b/src/dolphin/Arm64Emitter.h
@@ -727,7 +727,7 @@ public:
   void LSR(ARM64Reg Rd, ARM64Reg Rm, int shift);
   void LSL(ARM64Reg Rd, ARM64Reg Rm, int shift);
   void ASR(ARM64Reg Rd, ARM64Reg Rm, int shift);
-  void ROR_(ARM64Reg Rd, ARM64Reg Rm, int shift);
+  void ROR(ARM64Reg Rd, ARM64Reg Rm, int shift);
 
   // Logical (immediate)
   void AND(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms, bool invert = false);
diff --git a/src/dolphin/x64Emitter.cpp b/src/dolphin/x64Emitter.cpp
index 343f314..fd90ba7 100644
--- a/src/dolphin/x64Emitter.cpp
+++ b/src/dolphin/x64Emitter.cpp
@@ -1214,7 +1214,7 @@ void XEmitter::ROL(int bits, const OpArg& dest, const OpArg& shift)
 {
   WriteShift(bits, dest, shift, 0);
 }
-void XEmitter::ROR_(int bits, const OpArg& dest, const OpArg& shift)
+void XEmitter::ROR(int bits, const OpArg& dest, const OpArg& shift)
 {
   WriteShift(bits, dest, shift, 1);
 }
diff --git a/src/dolphin/x64Emitter.h b/src/dolphin/x64Emitter.h
index 869acb6..8799600 100644
--- a/src/dolphin/x64Emitter.h
+++ b/src/dolphin/x64Emitter.h
@@ -489,7 +489,7 @@ public:
 
   // Shift
   void ROL(int bits, const OpArg& dest, const OpArg& shift);
-  void ROR_(int bits, const OpArg& dest, const OpArg& shift);
+  void ROR(int bits, const OpArg& dest, const OpArg& shift);
   void RCL(int bits, const OpArg& dest, const OpArg& shift);
   void RCR(int bits, const OpArg& dest, const OpArg& shift);
   void SHL(int bits, const OpArg& dest, const OpArg& shift);
diff --git a/src/frontend/FrontendUtil.h b/src/frontend/FrontendUtil.h
index d30c4e1..caac9f0 100644
--- a/src/frontend/FrontendUtil.h
+++ b/src/frontend/FrontendUtil.h
@@ -100,6 +100,9 @@ bool SaveState(const char* filename);
 // undo the latest savestate load
 void UndoStateLoad();
 
+// imports savedata from an external file. Returns the difference between the filesize and the SRAM size
+int ImportSRAM(const char* filename);
+
 // enable or disable cheats
 void EnableCheats(bool enable);
 
diff --git a/src/frontend/Util_ROM.cpp b/src/frontend/Util_ROM.cpp
index 716ed04..f61c3e3 100644
--- a/src/frontend/Util_ROM.cpp
+++ b/src/frontend/Util_ROM.cpp
@@ -588,6 +588,21 @@ void UndoStateLoad()
     }
 }
 
+int ImportSRAM(const char* filename)
+{
+    FILE* file = fopen(filename, "rb");
+    fseek(file, 0, SEEK_END);
+    u32 size = ftell(file);
+    u8* importData = new u8[size];
+    rewind(file);
+    fread(importData, size, 1, file);
+    fclose(file);
+
+    int diff = NDS::ImportSRAM(importData, size);
+    delete[] importData;
+    return diff;
+}
+
 void EnableCheats(bool enable)
 {
     CheatsOn = enable;
diff --git a/src/frontend/qt_sdl/Input.cpp b/src/frontend/qt_sdl/Input.cpp
index 84d20ad..11b64cc 100644
--- a/src/frontend/qt_sdl/Input.cpp
+++ b/src/frontend/qt_sdl/Input.cpp
@@ -98,7 +98,9 @@ int GetEventKeyVal(QKeyEvent* event)
 void KeyPress(QKeyEvent* event)
 {
     int keyHK = GetEventKeyVal(event);
-    int keyKP = keyHK & ~event->modifiers();
+    int keyKP = keyHK;
+    if (event->modifiers() != Qt::KeypadModifier)
+        keyKP &= ~event->modifiers();
 
     for (int i = 0; i < 12; i++)
         if (keyKP == Config::KeyMapping[i])
@@ -112,7 +114,9 @@ void KeyPress(QKeyEvent* event)
 void KeyRelease(QKeyEvent* event)
 {
     int keyHK = GetEventKeyVal(event);
-    int keyKP = keyHK & ~event->modifiers();
+    int keyKP = keyHK;
+    if (event->modifiers() != Qt::KeypadModifier)
+        keyKP &= ~event->modifiers();
 
     for (int i = 0; i < 12; i++)
         if (keyKP == Config::KeyMapping[i])
diff --git a/src/frontend/qt_sdl/InputConfigDialog.cpp b/src/frontend/qt_sdl/InputConfigDialog.cpp
index 81baa65..9f08731 100644
--- a/src/frontend/qt_sdl/InputConfigDialog.cpp
+++ b/src/frontend/qt_sdl/InputConfigDialog.cpp
@@ -54,6 +54,7 @@ const int hk_general[] =
     HK_Reset,
     HK_FastForward,
     HK_FastForwardToggle,
+    HK_FullscreenToggle,
     HK_Lid,
     HK_Mic,
 };
@@ -64,6 +65,7 @@ const char* hk_general_labels[] =
     "Reset",
     "Fast forward",
     "Toggle FPS limit",
+    "Toggle Fullscreen",
     "Close/open lid",
     "Microphone",
 };
@@ -86,7 +88,7 @@ InputConfigDialog::InputConfigDialog(QWidget* parent) : QDialog(parent), ui(new
         addonsJoyMap[i] = Config::HKJoyMapping[hk_addons[i]];
     }
 
-    for (int i = 0; i < 6; i++)
+    for (int i = 0; i < 7; i++)
     {
         hkGeneralKeyMap[i] = Config::HKKeyMapping[hk_general[i]];
         hkGeneralJoyMap[i] = Config::HKJoyMapping[hk_general[i]];
@@ -94,7 +96,7 @@ InputConfigDialog::InputConfigDialog(QWidget* parent) : QDialog(parent), ui(new
 
     populatePage(ui->tabInput, 12, dskeylabels, keypadKeyMap, keypadJoyMap);
     populatePage(ui->tabAddons, 2, hk_addons_labels, addonsKeyMap, addonsJoyMap);
-    populatePage(ui->tabHotkeysGeneral, 6, hk_general_labels, hkGeneralKeyMap, hkGeneralJoyMap);
+    populatePage(ui->tabHotkeysGeneral, 7, hk_general_labels, hkGeneralKeyMap, hkGeneralJoyMap);
 
     int njoy = SDL_NumJoysticks();
     if (njoy > 0)
@@ -177,7 +179,7 @@ void InputConfigDialog::on_InputConfigDialog_accepted()
         Config::HKJoyMapping[hk_addons[i]] = addonsJoyMap[i];
     }
 
-    for (int i = 0; i < 6; i++)
+    for (int i = 0; i < 7; i++)
     {
         Config::HKKeyMapping[hk_general[i]] = hkGeneralKeyMap[i];
         Config::HKJoyMapping[hk_general[i]] = hkGeneralJoyMap[i];
@@ -226,7 +228,7 @@ void KeyMapButton::keyPressEvent(QKeyEvent* event)
 {
     if (!isChecked()) return QPushButton::keyPressEvent(event);
 
-    printf("KEY PRESSED = %08X %08X | %08X %08X %08X\n", event->key(), event->modifiers(), event->nativeVirtualKey(), event->nativeModifiers(), event->nativeScanCode());
+    printf("KEY PRESSED = %08X %08X | %08X %08X %08X\n", event->key(), (int)event->modifiers(), event->nativeVirtualKey(), event->nativeModifiers(), event->nativeScanCode());
 
     int key = event->key();
     int mod = event->modifiers();
diff --git a/src/frontend/qt_sdl/InputConfigDialog.h b/src/frontend/qt_sdl/InputConfigDialog.h
index de57414..95e0532 100644
--- a/src/frontend/qt_sdl/InputConfigDialog.h
+++ b/src/frontend/qt_sdl/InputConfigDialog.h
@@ -64,7 +64,7 @@ private:
 
     int keypadKeyMap[12],   keypadJoyMap[12];
     int addonsKeyMap[2],    addonsJoyMap[2];
-    int hkGeneralKeyMap[6], hkGeneralJoyMap[6];
+    int hkGeneralKeyMap[7], hkGeneralJoyMap[7];
 };
 
 
diff --git a/src/frontend/qt_sdl/PlatformConfig.cpp b/src/frontend/qt_sdl/PlatformConfig.cpp
index 4468d0e..c2d40c4 100644
--- a/src/frontend/qt_sdl/PlatformConfig.cpp
+++ b/src/frontend/qt_sdl/PlatformConfig.cpp
@@ -110,6 +110,7 @@ ConfigEntry PlatformConfigFile[] =
     {"HKKey_Reset",               0, &HKKeyMapping[HK_Reset],               -1, NULL, 0},
     {"HKKey_FastForward",         0, &HKKeyMapping[HK_FastForward],         -1, NULL, 0},
     {"HKKey_FastForwardToggle",   0, &HKKeyMapping[HK_FastForwardToggle],   -1, NULL, 0},
+    {"HKKey_FullscreenToggle",    0, &HKKeyMapping[HK_FullscreenToggle],    -1, NULL, 0},
     {"HKKey_SolarSensorDecrease", 0, &HKKeyMapping[HK_SolarSensorDecrease], -1, NULL, 0},
     {"HKKey_SolarSensorIncrease", 0, &HKKeyMapping[HK_SolarSensorIncrease], -1, NULL, 0},
 
@@ -119,6 +120,7 @@ ConfigEntry PlatformConfigFile[] =
     {"HKJoy_Reset",               0, &HKJoyMapping[HK_Reset],               -1, NULL, 0},
     {"HKJoy_FastForward",         0, &HKJoyMapping[HK_FastForward],         -1, NULL, 0},
     {"HKJoy_FastForwardToggle",   0, &HKJoyMapping[HK_FastForwardToggle],   -1, NULL, 0},
+    {"HKJoy_FastForwardToggle",   0, &HKJoyMapping[HK_FullscreenToggle],    -1, NULL, 0},
     {"HKJoy_SolarSensorDecrease", 0, &HKJoyMapping[HK_SolarSensorDecrease], -1, NULL, 0},
     {"HKJoy_SolarSensorIncrease", 0, &HKJoyMapping[HK_SolarSensorIncrease], -1, NULL, 0},
 
diff --git a/src/frontend/qt_sdl/PlatformConfig.h b/src/frontend/qt_sdl/PlatformConfig.h
index 9deee7f..ca03d80 100644
--- a/src/frontend/qt_sdl/PlatformConfig.h
+++ b/src/frontend/qt_sdl/PlatformConfig.h
@@ -29,6 +29,7 @@ enum
     HK_Reset,
     HK_FastForward,
     HK_FastForwardToggle,
+    HK_FullscreenToggle,
     HK_SolarSensorDecrease,
     HK_SolarSensorIncrease,
     HK_MAX
diff --git a/src/frontend/qt_sdl/VideoSettingsDialog.cpp b/src/frontend/qt_sdl/VideoSettingsDialog.cpp
index 971fee7..1397ccd 100644
--- a/src/frontend/qt_sdl/VideoSettingsDialog.cpp
+++ b/src/frontend/qt_sdl/VideoSettingsDialog.cpp
@@ -50,6 +50,10 @@ VideoSettingsDialog::VideoSettingsDialog(QWidget* parent) : QDialog(parent), ui(
     connect(grp3DRenderer, SIGNAL(buttonClicked(int)), this, SLOT(onChange3DRenderer(int)));
     grp3DRenderer->button(Config::_3DRenderer)->setChecked(true);
 
+#ifndef OGLRENDERER_ENABLED
+    ui->rb3DOpenGL->setEnabled(false);
+#endif
+
     ui->cbGLDisplay->setChecked(Config::ScreenUseGL != 0);
 
     ui->cbVSync->setChecked(Config::ScreenVSync != 0);
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index f8cdd24..3a735fb 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -49,7 +49,9 @@
 
 #include "NDS.h"
 #include "GBACart.h"
+#ifdef OGLRENDERER_ENABLED
 #include "OpenGLSupport.h"
+#endif
 #include "GPU.h"
 #include "SPU.h"
 #include "Wifi.h"
@@ -113,7 +115,6 @@ void audioCallback(void* data, Uint8* stream, int len)
     if (num_in < len_in-margin)
     {
         int last = num_in-1;
-        if (last < 0) last = 0;
 
         for (int i = num_in; i < len_in-margin; i++)
             ((u32*)buf_in)[i] = ((u32*)buf_in)[last];
@@ -266,6 +267,7 @@ EmuThread::EmuThread(QObject* parent) : QThread(parent)
     connect(this, SIGNAL(windowEmuPause()), mainWindow->actPause, SLOT(trigger()));
     connect(this, SIGNAL(windowEmuReset()), mainWindow->actReset, SLOT(trigger()));
     connect(this, SIGNAL(screenLayoutChange()), mainWindow->panel, SLOT(onScreenLayoutChanged()));
+    connect(this, SIGNAL(windowFullscreenToggle()), mainWindow, SLOT(onFullscreenToggled()));
 
     if (mainWindow->hasOGL) initOpenGL();
 }
@@ -335,13 +337,17 @@ void EmuThread::run()
     videoSettings.Soft_Threaded = Config::Threaded3D != 0;
     videoSettings.GL_ScaleFactor = Config::GL_ScaleFactor;
 
+#ifdef OGLRENDERER_ENABLED
     if (hasOGL)
     {
         oglContext->makeCurrent(oglSurface);
         videoRenderer = OpenGL::Init() ? Config::_3DRenderer : 0;
     }
     else
+#endif
+    {
         videoRenderer = 0;
+    }
 
     GPU::InitRenderer(videoRenderer);
     GPU::SetRenderSettings(videoRenderer, videoSettings);
@@ -364,6 +370,8 @@ void EmuThread::run()
 
         if (Input::HotkeyPressed(HK_Pause)) emit windowEmuPause();
         if (Input::HotkeyPressed(HK_Reset)) emit windowEmuReset();
+        
+        if (Input::HotkeyPressed(HK_FullscreenToggle)) emit windowFullscreenToggle();
 
         if (GBACart::CartInserted && GBACart::HasSolarSensor)
         {
@@ -393,13 +401,17 @@ void EmuThread::run()
                 if (hasOGL != mainWindow->hasOGL)
                 {
                     hasOGL = mainWindow->hasOGL;
+#ifdef OGLRENDERER_ENABLED
                     if (hasOGL)
                     {
                         oglContext->makeCurrent(oglSurface);
                         videoRenderer = OpenGL::Init() ? Config::_3DRenderer : 0;
                     }
                     else
+#endif
+                    {
                         videoRenderer = 0;
+                    }
                 }
                 else
                     videoRenderer = hasOGL ? Config::_3DRenderer : 0;
@@ -920,12 +932,14 @@ void ScreenPanelGL::paintGL()
     int frontbuf = GPU::FrontBuffer;
     glActiveTexture(GL_TEXTURE0);
 
+#ifdef OGLRENDERER_ENABLED
     if (GPU::Renderer != 0)
     {
         // hardware-accelerated render
         GPU::GLCompositor::BindOutputTexture();
     }
     else
+#endif
     {
         // regular render
         glBindTexture(GL_TEXTURE_2D, screenTexture);
@@ -1049,6 +1063,9 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
         actUndoStateLoad->setShortcut(QKeySequence(Qt::Key_F12));
         connect(actUndoStateLoad, &QAction::triggered, this, &MainWindow::onUndoStateLoad);
 
+        actImportSavefile = menu->addAction("Import savefile");
+        connect(actImportSavefile, &QAction::triggered, this, &MainWindow::onImportSavefile);
+
         menu->addSeparator();
 
         actQuit = menu->addAction("Quit");
@@ -1217,6 +1234,7 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
         actLoadState[i]->setEnabled(false);
     }
     actUndoStateLoad->setEnabled(false);
+    actImportSavefile->setEnabled(false);
 
     actPause->setEnabled(false);
     actReset->setEnabled(false);
@@ -1615,6 +1633,41 @@ void MainWindow::onUndoStateLoad()
     OSD::AddMessage(0, "State load undone");
 }
 
+void MainWindow::onImportSavefile()
+{
+    if (!RunningSomething) return;
+
+    emuThread->emuPause();
+    QString path = QFileDialog::getOpenFileName(this,
+                                            "Select savefile",
+                                            Config::LastROMFolder,
+                                            "Savefiles (*.sav *.bin *.dsv);;Any file (*.*)");
+
+    if (!path.isEmpty())
+    {
+        if (QMessageBox::warning(this,
+                        "Emulation will be reset and data overwritten",
+                        "The emulation will be reset and the current savefile overwritten.",
+                        QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok)
+        {
+            int res = Frontend::Reset();
+            if (res != Frontend::Load_OK)
+            {
+                QMessageBox::critical(this, "melonDS", "Reset failed\n" + loadErrorStr(res));
+            }
+            else
+            {
+                int diff = Frontend::ImportSRAM(path.toStdString().c_str());
+                if (diff > 0)
+                    OSD::AddMessage(0, "Trimmed savefile");
+                else if (diff < 0)
+                    OSD::AddMessage(0, "Savefile shorter than SRAM");
+            }
+        }
+    }
+    emuThread->emuUnpause();
+}
+
 void MainWindow::onQuit()
 {
     QApplication::quit();
@@ -1878,6 +1931,20 @@ void MainWindow::onTitleUpdate(QString title)
     setWindowTitle(title);
 }
 
+void MainWindow::onFullscreenToggled()
+{
+    if (!mainWindow->isFullScreen()) 
+    {
+        mainWindow->showFullScreen(); 
+        mainWindow->menuBar()->hide();
+    }
+    else
+    {
+        mainWindow->showNormal();
+        mainWindow->menuBar()->show();
+    }
+}
+
 void MainWindow::onEmuStart()
 {
     // TODO: make savestates work in DSi mode!!
@@ -1906,6 +1973,7 @@ void MainWindow::onEmuStart()
     actPause->setChecked(false);
     actReset->setEnabled(true);
     actStop->setEnabled(true);
+    actImportSavefile->setEnabled(true);
 
     actSetupCheats->setEnabled(true);
 }
@@ -1920,6 +1988,7 @@ void MainWindow::onEmuStop()
         actLoadState[i]->setEnabled(false);
     }
     actUndoStateLoad->setEnabled(false);
+    actImportSavefile->setEnabled(false);
 
     actPause->setEnabled(false);
     actReset->setEnabled(false);
diff --git a/src/frontend/qt_sdl/main.h b/src/frontend/qt_sdl/main.h
index cad30d6..978df9e 100644
--- a/src/frontend/qt_sdl/main.h
+++ b/src/frontend/qt_sdl/main.h
@@ -69,6 +69,8 @@ signals:
     void windowLimitFPSChange();
 
     void screenLayoutChange();
+    
+    void windowFullscreenToggle();
 
 private:
     volatile int EmuStatus;
@@ -193,6 +195,7 @@ private slots:
     void onSaveState();
     void onLoadState();
     void onUndoStateLoad();
+    void onImportSavefile();
     void onQuit();
 
     void onPause(bool checked);
@@ -229,6 +232,8 @@ private slots:
     void onEmuStop();
 
     void onUpdateVideoSettings(bool glchange);
+    
+    void onFullscreenToggled();
 
 private:
     void createScreenPanel();
@@ -243,6 +248,7 @@ public:
     QAction* actSaveState[9];
     QAction* actLoadState[9];
     QAction* actUndoStateLoad;
+    QAction* actImportSavefile;
     QAction* actQuit;
 
     QAction* actPause;
diff --git a/src/types.h b/src/types.h
index 234d4c0..c10b70d 100644
--- a/src/types.h
+++ b/src/types.h
@@ -19,13 +19,15 @@
 #ifndef TYPES_H
 #define TYPES_H
 
-typedef unsigned char       u8;
-typedef unsigned short      u16;
-typedef unsigned int        u32;
-typedef unsigned long long int   u64;
-typedef signed char         s8;
-typedef signed short        s16;
-typedef signed int          s32;
-typedef signed long long int     s64;
+#include <stdint.h>
+
+typedef uint8_t     u8;
+typedef uint16_t    u16;
+typedef uint32_t    u32;
+typedef uint64_t    u64;
+typedef int8_t      s8;
+typedef int16_t     s16;
+typedef int32_t     s32;
+typedef int64_t     s64;
 
 #endif // TYPES_H