diff --git a/examples/PoolBox/PoolBox.code-workspace b/examples/PoolBox/PoolBox.code-workspace
index 2939de43..540f55ec 100644
--- a/examples/PoolBox/PoolBox.code-workspace
+++ b/examples/PoolBox/PoolBox.code-workspace
@@ -93,7 +93,7 @@
 	"settings": {
 		"C_Cpp.default.includePath": [
 			"${env:JABY_ENGINE_PATH}/include",
-			"${env:JABY_ENGINE_PATH}/Support/include"
+			"${env:JABY_ENGINE_PATH}/support/include"
             ],
 		"C_Cpp.default.compilerPath": "",
 		"C_Cpp.default.cStandard": "c17",
diff --git a/examples/PoolBox/application/Makefile b/examples/PoolBox/application/Makefile
index 4ad6e032..cd3f4824 100644
--- a/examples/PoolBox/application/Makefile
+++ b/examples/PoolBox/application/Makefile
@@ -3,7 +3,7 @@ OVERLAY_CONFIG = Overlays.json
 include $(JABY_ENGINE_DIR)/mkfile/common/Wildcard.mk
 SRCS  = $(call rwildcard, src, c cpp)
 
-INCLUDES += -I$(JABY_ENGINE_DIR)/Support/include -I$(JABY_ENGINE_DIR)/include
+INCLUDES += -I$(JABY_ENGINE_DIR)/support/include -I$(JABY_ENGINE_DIR)/include
 CCFLAGS  += -save-temps=obj
 
 SUPPORT_LIBS += FontWriter
diff --git a/examples/PoolBox/application/src/application.cpp b/examples/PoolBox/application/src/application.cpp
index e2ff39e6..902ca15e 100644
--- a/examples/PoolBox/application/src/application.cpp
+++ b/examples/PoolBox/application/src/application.cpp
@@ -7,6 +7,7 @@
 #include <FontWriter/font_writer.hpp>
 #include <PSX/Audio/CDDA.hpp>
 #include <PSX/Periphery/periphery.hpp>
+#include <PSX/System/callbacks.hpp>
 #include <stdio.hpp>
 
 using namespace JabyEngine;
@@ -155,6 +156,10 @@ namespace LoadingScene {
     static void run() {
         if(old_state_changer != state_changer) {
             printf("Loading new state...\n");
+
+            Callback::VSyncCallback::install([]() {
+                printf("Still loading...\n");
+            });
             
             update();
             GPU::swap_buffers_vsync(1);
@@ -165,6 +170,7 @@ namespace LoadingScene {
             state_changer.asset_load();
             old_state_changer = state_changer;
             CDDA::pop_play();
+            Callback::VSyncCallback::uninstall();
         }
 
         state_changer.main();
diff --git a/include/PSX/Audio/CDDA.hpp b/include/PSX/Audio/CDDA.hpp
index bea2d1d6..acb6fc89 100644
--- a/include/PSX/Audio/CDDA.hpp
+++ b/include/PSX/Audio/CDDA.hpp
@@ -15,7 +15,7 @@ namespace JabyEngine {
         TrackList get_tracks();
 
         void play(uint8_t track);
-        void pause();
+        void stop();
 
         void push_play();
         void pop_play();
diff --git a/include/PSX/System/IOPorts/cd_io.hpp b/include/PSX/System/IOPorts/cd_io.hpp
index 8c1038bf..1ea6ecf0 100644
--- a/include/PSX/System/IOPorts/cd_io.hpp
+++ b/include/PSX/System/IOPorts/cd_io.hpp
@@ -160,6 +160,7 @@ namespace JabyEngine {
             static constexpr Desc SetMode{0x0E, Interrupt::Type::Acknowledge};
             static constexpr Desc GetLocP{0x11, Interrupt::Type::Acknowledge};
             static constexpr Desc   GetTN{0x13, Interrupt::Type::Acknowledge};
+            static constexpr Desc   GetTD{0x14, Interrupt::Type::Acknowledge};
         };
         
         static constexpr auto IORegister1Adr = 0x1F801801;
diff --git a/include/PSX/System/callbacks.hpp b/include/PSX/System/callbacks.hpp
new file mode 100644
index 00000000..ae6e950c
--- /dev/null
+++ b/include/PSX/System/callbacks.hpp
@@ -0,0 +1,20 @@
+#pragma once
+#include "syscalls.hpp"
+
+namespace JabyEngine {
+    namespace Callback {
+        struct VSyncCallback {
+            using Function = void (*)();
+            
+            static Function callback;
+
+            static void install(Function function) {
+                VSyncCallback::callback = function;
+            }
+
+            static void uninstall() {
+                VSyncCallback::install(nullptr);
+            }
+        };
+    }
+}
\ No newline at end of file
diff --git a/include/PSX/System/syscalls.hpp b/include/PSX/System/syscalls.hpp
index df0694a5..92c64a29 100644
--- a/include/PSX/System/syscalls.hpp
+++ b/include/PSX/System/syscalls.hpp
@@ -45,6 +45,51 @@ namespace JabyEngine {
         extern const Version version;
     }
 
+    struct TCB {
+        uint32_t status;
+        uint32_t unused;
+        uint32_t reg[32];
+        uint32_t epc;
+        uint32_t hi;
+        uint32_t lo;
+        uint32_t sr;
+        uint32_t cause;
+        uint32_t unused2[9];
+    };
+
+    struct PCB {
+        TCB* current_tcb;
+    };
+
+    struct ToT {
+        using ExCB = void;
+        using EvCB = void;
+        using FCB  = void;
+
+        ExCB*    exception_chain;
+        uint32_t exception_chain_size;
+        PCB*     processes;
+        uint32_t processes_size;
+        TCB*     threads;
+        uint32_t threads_size;
+        uint32_t reserved_0;
+        uint32_t reserved_1;
+        EvCB*    events;
+        uint32_t events_size;
+        uint32_t reserved_2;
+        uint32_t reserved_3;
+        uint32_t reserved_4;
+        uint32_t reserved_5;
+        uint32_t reserved_6;
+        uint32_t reserved_7;
+        FCB*     files;
+        uint32_t files_size;
+        uint32_t reserved_8;
+        uint32_t reserved_9;
+    };
+
+    extern ToT table_of_tables;
+
     namespace SysCall {
         static constexpr const uint32_t Table_A = 0xA0;
         static constexpr const uint32_t Table_B = 0xB0;
@@ -73,6 +118,7 @@ namespace JabyEngine {
 
         typedef InterruptVerifierResult (*InterruptVerifier)();
         typedef uint32_t (*InterruptHandler)(uint32_t);
+        using   ThreadHandle = uint32_t;
 
         #pragma pack(push, 1)
         struct InterrupCallback {
@@ -85,6 +131,12 @@ namespace JabyEngine {
 
         #define __syscall_function_cast(table, ...) reinterpret_cast<__VA_ARGS__>(table)
 
+        static __always_inline uint32_t* get_gp() {
+            uint32_t* gp;
+            __asm__("sw $gp, %0" : "=m"(gp));
+            return gp;
+        }
+
         static __always_inline void* memcpy(void *dst, const void *src, size_t len) {
             register uint32_t FuncID asm("t1") = 0x2A;
             __asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
@@ -92,6 +144,13 @@ namespace JabyEngine {
             return __syscall_function_cast(Table_A, void*(*)(void*, const void*, size_t))(dst, src, len);
         }
 
+        static __always_inline ThreadHandle OpenThread(void (*thread_func)(), uint32_t* stack_ptr, uint32_t* gp) {
+            register uint32_t FuncID asm("t1") = 0x0E;
+            __asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
+
+            return __syscall_function_cast(Table_B, ThreadHandle(*)(void(*)(), uint32_t*, uint32_t*))(thread_func, stack_ptr, gp);
+        }
+
         static __always_inline void InitPad(uint8_t *portA, uint32_t portASize, uint8_t *portB, uint32_t portBSize) {
             register uint32_t FuncID asm("t1") = 0x12;
             __asm__ volatile("" : "=r"(FuncID) : "r"(FuncID));
diff --git a/include/PSX/System/threads.hpp b/include/PSX/System/threads.hpp
new file mode 100644
index 00000000..1ee97422
--- /dev/null
+++ b/include/PSX/System/threads.hpp
@@ -0,0 +1,43 @@
+#pragma once
+#include "syscalls.hpp"
+
+namespace JabyEngine {
+    struct Thread {
+        static constexpr uint32_t idx_from_handle(SysCall::ThreadHandle thread) {
+            return thread & 0xFFFF;
+        }
+
+        static void prepare_next(SysCall::ThreadHandle thread) {
+            table_of_tables.processes->current_tcb = &table_of_tables.threads[idx_from_handle(thread)];
+        }
+
+        static void execute_next() {
+            SysCall::ReturnFromException();
+        }
+
+        static void set_kernel_mode_for(SysCall::ThreadHandle handle) {
+            table_of_tables.threads[idx_from_handle(handle)].sr = 0x0;
+        }
+
+        static void set_user_mode_for(SysCall::ThreadHandle handle) {
+            table_of_tables.threads[idx_from_handle(handle)].sr = 0x40000404;
+        }
+    };
+
+    struct MainThread {
+        static void prepare_if_main(SysCall::ThreadHandle handle) {
+            if(table_of_tables.processes->current_tcb == &table_of_tables.threads[0]) {
+                Thread::prepare_next(handle);
+            }
+        }
+
+        static void prepare_restore() {
+            Thread::prepare_next(0);
+        }
+
+        static void restore() {
+            MainThread::prepare_restore();
+            Thread::execute_next();
+        }
+    };
+}
\ No newline at end of file
diff --git a/mkfile/PSEXETarget.mk b/mkfile/PSEXETarget.mk
index 85632fa6..ac315988 100644
--- a/mkfile/PSEXETarget.mk
+++ b/mkfile/PSEXETarget.mk
@@ -5,7 +5,7 @@ include $(AUTO_OVERLAY_DIR)/Overlays.mk
 include $(JABY_ENGINE_DIR)/mkfile/common/CustomConfigHelper.mk
 
 JABY_ENGINE_LIB_DIR         = $(JABY_ENGINE_DIR)/lib/PSX-$(BUILD_PROFILE)/$(CUSTOM_CONFIG)
-JABY_ENGINE_SUPPORT_LIB_DIR = $(JABY_ENGINE_DIR)/Support/lib/PSX-$(BUILD_PROFILE)
+JABY_ENGINE_SUPPORT_LIB_DIR = $(JABY_ENGINE_DIR)/support/lib/PSX-$(BUILD_PROFILE)
 JABY_ENGINE_SUPPORT_LIBS    = $(addprefix -l,$(SUPPORT_LIBS))
 JABY_ENGINE_SUPPORT_DEPS    = $(addsuffix .a,$(addprefix $(JABY_ENGINE_SUPPORT_LIB_DIR)/lib,$(SUPPORT_LIBS)))
 JABY_ENGINE_LIB_NAME        = JabyEngine_$(PSX_TV_FORMAT)
diff --git a/mkfile/psexe.ld b/mkfile/psexe.ld
index cde05fcb..d1fef6ec 100644
--- a/mkfile/psexe.ld
+++ b/mkfile/psexe.ld
@@ -31,10 +31,11 @@ ENTRY(_ZN10JabyEngine5startEv)
 TLOAD_ADDR = DEFINED(TLOAD_ADDR) ? TLOAD_ADDR : 0x80010000;
 
 MEMORY {
+    bios         : ORIGIN = 0x100,                LENGTH = 0x500
     loader       : ORIGIN = (TLOAD_ADDR - 0x800), LENGTH = 2048
-    ram(rwx)     : ORIGIN = 0x80010000, LENGTH = 2M - 0x10000
-    ram_alt(rwx) : ORIGIN = 0x80010000, LENGTH = 2M - 0x10000
-    dcache       : ORIGIN = 0x1f800000, LENGTH = 0x400
+    ram(rwx)     : ORIGIN = 0x80010000,           LENGTH = 2M - 0x10000
+    ram_alt(rwx) : ORIGIN = 0x80010000,           LENGTH = 2M - 0x10000
+    dcache       : ORIGIN = 0x1f800000,           LENGTH = 0x400
 }
 
 __ram_top       = ORIGIN(ram) + LENGTH(ram);
@@ -50,7 +51,12 @@ __persistent_lbas_len = (__persistent_lbas_end - __persistent_lbas_start);
 
 __stack_start   = ORIGIN(ram) + LENGTH(ram);
 
+
 SECTIONS {
+    .bios (NOLOAD) : {
+        _ZN10JabyEngine15table_of_tablesE = .;
+    } > bios
+
     /DISCARD/ : { *(.MIPS.abiflags) }
 
     /* Everything is statically linked, so discard PLTs. */
diff --git a/src/Library/internal-include/BootLoader/boot_loader.hpp b/src/Library/internal-include/BootLoader/boot_loader.hpp
index 38b3ac0f..49b5a6ea 100644
--- a/src/Library/internal-include/BootLoader/boot_loader.hpp
+++ b/src/Library/internal-include/BootLoader/boot_loader.hpp
@@ -8,6 +8,10 @@ namespace JabyEngine {
             void identify();
         }
 
+        namespace Callbacks {
+            void setup();
+        }
+
         namespace CD {
             void setup();
         }
diff --git a/src/Library/internal-include/CD/cd_internal.hpp b/src/Library/internal-include/CD/cd_internal.hpp
index 79e9efcc..71ce373c 100644
--- a/src/Library/internal-include/CD/cd_internal.hpp
+++ b/src/Library/internal-include/CD/cd_internal.hpp
@@ -4,9 +4,8 @@
 namespace JabyEngine {
     namespace CD {
         namespace internal {
-            extern State current_state;
-            extern CD_IO::Interrupt::Type last_interrupt;
-            extern uint8_t                cmd_interrupt_bit;
+            extern State   current_state;
+            extern uint8_t cmd_interrupt_bit;
 
             struct Command {
                 static void wait_completed() {
diff --git a/src/Library/internal-include/System/callbacks_internal.hpp b/src/Library/internal-include/System/callbacks_internal.hpp
new file mode 100644
index 00000000..6664e202
--- /dev/null
+++ b/src/Library/internal-include/System/callbacks_internal.hpp
@@ -0,0 +1,21 @@
+#pragma once
+#include <PSX/System/threads.hpp>
+
+namespace JabyEngine {
+    namespace Callback {
+        namespace internal {
+            namespace VSync {
+                static constexpr size_t StackSize = 64;
+
+                extern SysCall::ThreadHandle thread_handle;
+                extern uint32_t              stack[StackSize];
+                void                         routine();
+
+                static void execute() {
+                    MainThread::prepare_if_main(VSync::thread_handle);
+                    Thread::execute_next();
+                }
+            }
+        }
+    }
+}
diff --git a/src/Library/src/Audio/CDDA.cpp b/src/Library/src/Audio/CDDA.cpp
index 527e5ec4..8888ae88 100644
--- a/src/Library/src/Audio/CDDA.cpp
+++ b/src/Library/src/Audio/CDDA.cpp
@@ -1,11 +1,11 @@
 #include "../../internal-include/CD/cd_internal.hpp"
 #include <PSX/Audio/CDDA.hpp>
-#include <stdio.hpp>
 
 namespace JabyEngine {
     namespace CDDA {
         namespace CD = JabyEngine::CD::internal;
 
+        static CD::CDTimeStamp playing_track;
         static CD::CDTimeStamp last_track;
 
         TrackList get_tracks() {
@@ -28,16 +28,22 @@ namespace JabyEngine {
 
         void play(uint8_t track) {
             CD::enable_CDDA(); // < Command waits
+
+            CD::Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::GetTD, track);
+            const auto stats  = CD_IO::PortIndex0::ResponseFifo.read().raw;
+            playing_track.min = CD_IO::PortIndex0::ResponseFifo.read().raw;
+            playing_track.sec = CD_IO::PortIndex0::ResponseFifo.read().raw;
+
             CD::Command::send<CD_IO::PortIndex0>(CD_IO::Command::Play, track);
         }
 
-        void pause() {
+        void stop() {
             CD::Command::wait_completed();
             CD::Command::send<CD_IO::PortIndex0>(CD_IO::Command::Pause);
         }
 
         void push_play() {
-            pause();
+            stop();
             CD::Command::wait_completed();
             CD::Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::GetLocP);
 
@@ -53,8 +59,8 @@ namespace JabyEngine {
 
         void pop_play() {
             CD::Command::wait_completed();
-            CD::Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::SetLoc, last_track.min, last_track.sec, last_track.sector);
             CD::enable_CDDA(); // < Command waits
+            CD::Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::SetLoc, last_track.min, last_track.sec, last_track.sector);
             CD::Command::send<CD_IO::PortIndex0>(CD_IO::Command::Play);
         }
     }
diff --git a/src/Library/src/BootLoader/callbacks_boot.cpp b/src/Library/src/BootLoader/callbacks_boot.cpp
new file mode 100644
index 00000000..7c5fb44b
--- /dev/null
+++ b/src/Library/src/BootLoader/callbacks_boot.cpp
@@ -0,0 +1,21 @@
+#include "../../internal-include/BootLoader/boot_loader.hpp"
+#include "../../internal-include/System/callbacks_internal.hpp"
+
+namespace JabyEngine {    
+    namespace boot {
+        namespace Callbacks {
+            namespace InternalCallback = JabyEngine::Callback::internal;
+
+            void setup() {
+                SysCall::EnterCriticalSection();
+                    InternalCallback::VSync::thread_handle = SysCall::OpenThread(
+                        InternalCallback::VSync::routine,
+                        &InternalCallback::VSync::stack[InternalCallback::VSync::StackSize - 1],
+                        SysCall::get_gp()
+                    );
+                    Thread::set_user_mode_for(InternalCallback::VSync::thread_handle);
+                SysCall::ExitCriticalSection();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Library/src/BootLoader/start_boot.cpp b/src/Library/src/BootLoader/start_boot.cpp
index c97c659e..4c85bae2 100644
--- a/src/Library/src/BootLoader/start_boot.cpp
+++ b/src/Library/src/BootLoader/start_boot.cpp
@@ -47,6 +47,7 @@ namespace JabyEngine {
                 static constexpr auto DebugScale = 1.0;
 
                 BIOS::identify();
+                Callbacks::setup();
 
                 __debug_boot_color_at(::JabyEngine::GPU::Color24::Grey(), DebugX, DebugY, DebugScale);
                 DMA::setup();
@@ -69,7 +70,6 @@ namespace JabyEngine {
                 test_bios_font();
                 test_gte_scale();
 
-                //Pause??
                 SPU::setup();
             }
         }
diff --git a/src/Library/src/CD/cd.cpp b/src/Library/src/CD/cd.cpp
index df38ae1f..39d3f992 100644
--- a/src/Library/src/CD/cd.cpp
+++ b/src/Library/src/CD/cd.cpp
@@ -2,11 +2,12 @@
 #include <PSX/System/IOPorts/dma_io.hpp>
 #include <PSX/System/IOPorts/interrupt_io.hpp>
 #include <PSX/System/syscalls.hpp>
+#include <stdio.hpp>
 
 namespace JabyEngine {
     namespace CD {
         namespace internal {
-            static constexpr auto AudioSectorMode = CD_IO::Mode::from(CD_IO::Mode::SingleSpeed, CD_IO::Mode::CDDA);
+            static constexpr auto AudioSectorMode = CD_IO::Mode::from(CD_IO::Mode::SingleSpeed, CD_IO::Mode::AutoPauseTrack, CD_IO::Mode::CDDA);
             static constexpr auto DataSectorMode  = CD_IO::Mode::from(CD_IO::Mode::DoubleSpeed, CD_IO::Mode::DataSector);
             
             static SysCall::InterruptVerifierResult interrupt_verifier();
@@ -16,7 +17,6 @@ namespace JabyEngine {
             static uint32_t              cur_lba;
             static uint32_t              dst_lba;
             
-            CD_IO::Interrupt::Type    last_interrupt    = CD_IO::Interrupt::Type::None;
             uint8_t                   cmd_interrupt_bit = 0;
             State                     current_state     = State::Free;
             SysCall::InterrupCallback callback          = {
@@ -84,32 +84,45 @@ namespace JabyEngine {
 
                 CD_IO::PortIndex1::change_to();
                 const auto cur_irq = CD_IO::Interrupt::get_type(CD_IO::PortIndex1::InterruptFlag);
-                last_interrupt = cur_irq;
                 CD_IO::Interrupt::ack_extended(CD_IO::PortIndex1::InterruptFlag);
 
                 cmd_interrupt_bit = bit::clear(cmd_interrupt_bit, cur_irq);
-                if(cur_irq == CD_IO::Interrupt::DataReady) {
-                    // Obtain sector content here
-                    auto* sector = sector_allocator.allocate_sector();
-                    if(sector) {
-                        //Now obtain sector
-                        read_sector_to(*sector);
+                switch(cur_irq) {
+                    case CD_IO::Interrupt::DataReady: {
+                        // Obtain sector content here
+                        auto* sector = sector_allocator.allocate_sector();
+                        if(sector) {
+                            //Now obtain sector
+                            read_sector_to(*sector);
 
-                        cur_lba++;
-                        if(cur_lba == dst_lba) {
-                            current_state = State::Done;
+                            cur_lba++;
+                            if(cur_lba == dst_lba) {
+                                current_state = State::Done;
+                                pause_cd();
+                            }
+                        }
+
+                        else {
+                            current_state = State::BufferFull;
                             pause_cd();
                         }
-                    }
+                    } break;
 
-                    else {
-                        current_state = State::BufferFull;
-                        pause_cd();
-                    }
-                }
+                    case CD_IO::Interrupt::DataEnd: {
+                        CD_IO::PortIndex0::change_to();
+                        Command::send<CD_IO::PortIndex0>(CD_IO::Command::SetLoc, static_cast<uint8_t>(0x0), static_cast<uint8_t>(0x09), static_cast<uint8_t>(0x0));
 
-                else if(cur_irq == CD_IO::Interrupt::DiskError) {
-                    current_state = State::Error;
+                        CD_IO::PortIndex1::change_to();
+                        while(CD_IO::Interrupt::get_type(CD_IO::PortIndex1::InterruptFlag) != CD_IO::Interrupt::Acknowledge);
+                        CD_IO::Interrupt::ack_extended(CD_IO::PortIndex1::InterruptFlag);
+
+                        CD_IO::PortIndex0::change_to();
+                        Command::send<CD_IO::PortIndex0>(CD_IO::Command::Play);
+                    } break;
+
+                    case CD_IO::Interrupt::DiskError: {
+                        current_state = State::Error;
+                    } break;
                 }
 
                 // No masking required because we can only write bit 0 - 2
@@ -141,7 +154,7 @@ namespace JabyEngine {
             void enable_CDDA() {
                 Command::wait_completed();
                 CD_IO::PortIndex0::change_to();
-                Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::SetMode, AudioSectorMode);                
+                Command::send_wait<CD_IO::PortIndex0>(CD_IO::Command::SetMode, AudioSectorMode);
             }
         }
     }
diff --git a/src/Library/src/GPU/gpu.cpp b/src/Library/src/GPU/gpu.cpp
index bd692544..e84edb7e 100644
--- a/src/Library/src/GPU/gpu.cpp
+++ b/src/Library/src/GPU/gpu.cpp
@@ -1,4 +1,5 @@
 #include "../../internal-include/GPU/gpu_internal.hpp"
+#include "../../internal-include/System/callbacks_internal.hpp"
 #include <PSX/Timer/frame_timer.hpp>
 #include <PSX/System/IOPorts/interrupt_io.hpp>
 #include <PSX/System/syscalls.hpp>
@@ -40,8 +41,7 @@ namespace JabyEngine {
                 MasterTime::value++;
 
                 Interrupt::ack_irq(Interrupt::VBlank);
-                SysCall::ReturnFromException();
-                __builtin_unreachable();
+                Callback::internal::VSync::execute();
             }
 
             uint32_t Display :: exchange_buffer_and_display() {
diff --git a/src/Library/src/System/callbacks.cpp b/src/Library/src/System/callbacks.cpp
new file mode 100644
index 00000000..d71da9b5
--- /dev/null
+++ b/src/Library/src/System/callbacks.cpp
@@ -0,0 +1,26 @@
+#include "../../internal-include/System/callbacks_internal.hpp"
+#include <PSX/System/callbacks.hpp>
+
+#include <stdio.hpp>
+
+namespace JabyEngine {
+    namespace Callback {
+        VSyncCallback::Function VSyncCallback :: callback = nullptr;
+
+        namespace internal {
+            namespace VSync {
+                SysCall::ThreadHandle thread_handle    = 0;
+                uint32_t              stack[StackSize] = {0};
+
+                void routine() {
+                    while(true) {
+                        if(VSyncCallback::callback) {
+                            VSyncCallback::callback();
+                        }
+                        MainThread::restore();
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/support/src/Makefile b/support/src/Makefile
index c5efff53..923279d5 100644
--- a/support/src/Makefile
+++ b/support/src/Makefile
@@ -1,5 +1,5 @@
 FontWriter: always
-	$(MAKE) -C $(JABY_ENGINE_DIR)/Support/src/FontWriter $(MAKECMDGOALS)
+	$(MAKE) -C $(JABY_ENGINE_DIR)/support/src/FontWriter $(MAKECMDGOALS)
 
 all: FontWriter
 
diff --git a/template/JabyEngine-PSX_Game/#{ProjectName}.code-workspace b/template/JabyEngine-PSX_Game/#{ProjectName}.code-workspace
index 866a6c77..4e1124dc 100644
--- a/template/JabyEngine-PSX_Game/#{ProjectName}.code-workspace
+++ b/template/JabyEngine-PSX_Game/#{ProjectName}.code-workspace
@@ -93,7 +93,7 @@
 	"settings": {
 		"C_Cpp.default.includePath": [
 			"${env:JABY_ENGINE_PATH}/include",
-			"${env:JABY_ENGINE_PATH}/Support/include"
+			"${env:JABY_ENGINE_PATH}/support/include"
             ],
 		"C_Cpp.default.compilerPath": "",
 		"C_Cpp.default.cStandard": "c17",
diff --git a/template/JabyEngine-PSX_Game/application/Makefile b/template/JabyEngine-PSX_Game/application/Makefile
index 6432cda9..2de33a7b 100644
--- a/template/JabyEngine-PSX_Game/application/Makefile
+++ b/template/JabyEngine-PSX_Game/application/Makefile
@@ -4,7 +4,7 @@ include $(JABY_ENGINE_DIR)/mkfile/common/Wildcard.mk
 SRCS  = $(call rwildcard, src, c cpp)
 
 INCLUDES += -I$(JABY_ENGINE_DIR)/include
-#INCLUDES += -I$(JABY_ENGINE_DIR)/Support/include
+#INCLUDES += -I$(JABY_ENGINE_DIR)/support/include
 
 #Example for using Support libs
 #SUPPORT_LIBS += FontWriter