diff --git a/Makefile b/Makefile
index ffcb765..34379a1 100644
--- a/Makefile
+++ b/Makefile
@@ -94,6 +94,7 @@ KernSources =	libbuf/buf.c libbuf/bputc.c libbuf/bscroll.c                   \
 		kernel/mm/heap.c kernel/mm/malloc.c                            \
 		kernel/mm/gdt.c kernel/ps/sched.c                              \
 		kernel/init/info.c kernel/init/ssp.c                           \
+		kernel/io/rtc.c kernel/io/keyb.c
 
 LibCObj=$(patsubst %.c,$(KOBJDIR)/%.o,$(LibCSources))
 
@@ -119,7 +120,7 @@ $(KOBJDIR)/libc/atoi.o: $(KALEIDDIR)/libc/atoi.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR
 	@$(KCC) -D_NEED_ATOL $< -o $@.2
 	@$(KCC) -D_NEED_ATOU $< -o $@.3
 	@$(KCC) -D_NEED_ATOUL $< -o $@.4
-	@$(LD) -r $@.1 $@.2 $@.3 $@.4 -o $@
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 $@.3 $@.4 -o $@
 	@rm -f $@.1 $@.2 $@.3 $@.4
 	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
 
@@ -129,7 +130,7 @@ $(KOBJDIR)/libc/itoa.o: $(KALEIDDIR)/libc/itoa.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR
 	@$(KCC) -D_NEED_LTOA $< -o $@.2
 	@$(KCC) -D_NEED_UTOA $< -o $@.3
 	@$(KCC) -D_NEED_ULTOA $< -o $@.4
-	@$(LD) -r $@.1 $@.2 $@.3 $@.4 -o $@
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 $@.3 $@.4 -o $@
 	@rm -f $@.1 $@.2 $@.3 $@.4
 	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
 
@@ -138,6 +139,33 @@ $(KOBJDIR)/libc/mem.o: $(KALEIDDIR)/libc/mem.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
 	@$(KCC) -fno-strict-aliasing $< -o $@
 	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
 
+$(KOBJDIR)/kernel/cpu/idt.o: $(KALEIDDIR)/kernel/cpu/idt.c \
+	$(KALEIDDIR)/kernel/cpu/isr.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
+	@mkdir -p $(shell dirname $@)
+	@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/cpu/isr.asm -o $@.1
+	@$(KCC) $< -o $@.2
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
+	@rm -f $@.1 $@.2
+	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
+
+$(KOBJDIR)/kernel/io/keyb.o: $(KALEIDDIR)/kernel/io/keyb.c \
+	$(KALEIDDIR)/kernel/io/keyb.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
+	@mkdir -p $(shell dirname $@)
+	@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/io/keyb.asm -o $@.1
+	@$(KCC) $< -o $@.2
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
+	@rm -f $@.1 $@.2
+	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
+
+$(KOBJDIR)/kernel/io/rtc.o: $(KALEIDDIR)/kernel/io/rtc.c \
+	$(KALEIDDIR)/kernel/io/rtc.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
+	@mkdir -p $(shell dirname $@)
+	@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/io/rtc.asm -o $@.1
+	@$(KCC) $< -o $@.2
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
+	@rm -f $@.1 $@.2
+	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
+
 ## MAIN MAKEFILE ------------------------------------------------------------- #
 
 $(KOBJDIR)/%.o: %.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
@@ -160,7 +188,7 @@ debug: all
 
 gdb: all
 	@qemu-system-x86_64 -m 64M -hda $(BUILDDIR)/bin/disk.img -no-reboot \
-	-no-shutdown -d cpu_reset,guest_errors,pcall,int -s 2> $(BUILDDIR)/qemu.log &
+	-no-shutdown -d cpu_reset,guest_errors,pcall,int -s -S 2> $(BUILDDIR)/qemu.log &
 	@ndisasm $(BINDIR)/kaleid -o 0x00100000 -b 64 > kaleid64_disasm.asm
 	@ndisasm $(BINDIR)/kaleid -o 0x00100000 -b 32 > kaleid32_disasm.asm
 	@gdb \
@@ -169,6 +197,13 @@ gdb: all
 	-ex "symbol-file $(BINDIR)/kaleid" \
 	-ex "break BtStartKern"            \
 
+ddd: all
+	@qemu-system-x86_64 -m 64M -hda $(BUILDDIR)/bin/disk.img -no-reboot \
+	-no-shutdown -d cpu_reset,guest_errors,pcall,int -s -S 2> $(BUILDDIR)/qemu.log &
+	@ndisasm $(BINDIR)/kaleid -o 0x00100000 -b 64 > kaleid64_disasm.asm
+	@ndisasm $(BINDIR)/kaleid -o 0x00100000 -b 32 > kaleid32_disasm.asm
+	@ddd
+
 install_mbr: $(BINDIR)/disk.img $(MBRDIR)/grub.cfg
 	@mkdir -p $(BINDIR)/disk
 	@echo ${CL2}[$@] ${NC}Installing MBR on image...${CL3}
diff --git a/ProjectTree b/ProjectTree
index f8fa114..c992fb1 100644
--- a/ProjectTree
+++ b/ProjectTree
@@ -132,8 +132,11 @@
 │   │   └── prog.c
 │   ├── kernel
 │   │   ├── cpu
+│   │   │   ├── cpu.asm
 │   │   │   ├── cpuid.c
-│   │   │   └── idt.c
+│   │   │   ├── idt.c
+│   │   │   ├── isr.asm
+│   │   │   └── isr.inc
 │   │   ├── init
 │   │   │   ├── info.c
 │   │   │   ├── init.c
@@ -174,4 +177,4 @@
 ├── ProjectTree
 └── README.md
 
-37 directories, 112 files
+37 directories, 115 files
diff --git a/boot/loader/loader.asm b/boot/loader/loader.asm
index 2b87b3f..001d524 100644
--- a/boot/loader/loader.asm
+++ b/boot/loader/loader.asm
@@ -172,6 +172,7 @@ _loader64:
     mov qword [newKernelEnd], KERNEL_STACK
     mov rdi, [mbInfo]
     mov rsi, [mbMagic]
+    mov rdx, GDT64.code
     call BtStartKern
 
 ;; We must never reach this point ------------------------------------------- ;;
diff --git a/include/kernel/base.h b/include/kernel/base.h
index 3669e93..2fbec68 100644
--- a/include/kernel/base.h
+++ b/include/kernel/base.h
@@ -43,6 +43,7 @@ typedef struct BootInfo_t       BootInfo_t;
 typedef struct ListHead_t       ListHead_t;
 typedef struct ListNode_t       ListNode_t;
 typedef struct Processor_t      Processor_t;
+typedef struct IRQList_t        IRQList_t;
 
 typedef enum ProcState_t        ProcState_t;
 
diff --git a/include/kernel/boot.h b/include/kernel/boot.h
index f59f332..6be8bef 100644
--- a/include/kernel/boot.h
+++ b/include/kernel/boot.h
@@ -46,6 +46,7 @@ struct BootInfo_t
         void *modulesAddr;      //mods_addr
         char *grubName;         //boot_loader_name
         void *kernelAddr;
+        void *codeSegment;
         void *kernelEndAddr;
     } btldr;
 
diff --git a/include/kernel/cpu.h b/include/kernel/cpuid.h
similarity index 90%
rename from include/kernel/cpu.h
rename to include/kernel/cpuid.h
index b5f7963..ea63172 100644
--- a/include/kernel/cpu.h
+++ b/include/kernel/cpuid.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------//
 //                           GNU GPL OS/K                                     //
 //                                                                            //
-//  Desc:  CPU related functions                                              //
+//  Desc:  CPUID related functions                                              //
 //                                                                            //
 //                                                                            //
 //  Copyright © 2018-2019 The OS/K Team                                       //
@@ -26,8 +26,12 @@
 #include <kernel/base.h>
 #endif
 
-#ifndef _KALKERN_CPU_H
-#define _KALKERN_CPU_H
+#ifndef _KALKERN_CPUID_H
+#define _KALKERN_CPUID_H
+
+// -------------------------------------------------------------------------- //
+
+typedef struct Registers_t Registers_t;
 
 // -------------------------------------------------------------------------- //
 
@@ -94,11 +98,15 @@ enum {
 
 // -------------------------------------------------------------------------- //
 
-typedef struct {
-        ushort length;
-        void*    base;
-    } __attribute__((packed)) Idtr_t;
+struct Registers_t
+{
+    ulong ds;
+    ulong rdi, rsi, rbp, rsp, rbx, rdx, rcx, rax;
+    ulong intNo, errCode;
+    ulong rip, cs, eflags, useresp, ss;
+} __attribute__((packed));
 
 // -------------------------------------------------------------------------- //
+
 #endif
 
diff --git a/include/kernel/idt.h b/include/kernel/idt.h
new file mode 100644
index 0000000..3083a20
--- /dev/null
+++ b/include/kernel/idt.h
@@ -0,0 +1,130 @@
+#ifndef _KALKERN_BASE_H
+#include <kernel/base.h>
+#endif
+
+#ifndef _KALKERN_IDT_H
+#define _KALKERN_IDT_H
+
+typedef struct IdtDescriptor_t IdtDescriptor_t;
+typedef struct IdtEntry_t IdtEntry_t;
+typedef struct IdtPtr_t IdtPtr_t;
+typedef struct IRQList_t IRQList_t;
+
+// -------------------------------------------------------------------------- //
+
+#define interrupt(n) asm volatile ("int %0" : : "N" (n) : "cc", "memory") \
+
+// -------------------------------------------------------------------------- //
+
+struct IdtDescriptor_t {
+   ushort limit;
+   ulong base;
+}  __attribute__((packed)) ;
+
+struct IdtEntry_t
+{
+   ushort baseLow;
+   ushort selector;
+   uchar reservedIst;
+   uchar flags;
+   ushort baseMid;
+   uint baseHigh;
+   uint reserved;
+} __attribute__((packed));
+
+struct IdtPtr_t
+{
+    ushort limit;
+    void *base;
+} __attribute__((packed));
+
+struct IRQList_t
+{
+    uchar n; //number of entries in the list
+
+    struct entry {
+        void (*isr)(void);
+        uchar irq;
+        uchar flags;
+    } entry[224];
+};
+
+static char *IsrExceptions[32] = {
+    "Divide Error Fault",
+    "Debug Exception Trap",
+    "Non-maskable Interrupt",
+    "Breakpoint Trap",
+    "Overflow Trap",
+    "Bound Range Exceeded Fault",
+    "Invalid Opcode Fault",
+    "Device Not Available or No Math Coprocessor Fault",
+    "Double Fault Abort",
+    "Coprocessor Segment Overrun Fault",
+    "Invalid TSS Fault",
+    "Segment Not Present Fault",
+    "Stack Segment fault",
+    "General Protection Fault",
+    "Page Fault",
+    "Intel Reserved",
+    "x87 FPU Floating Point or Math Fault",
+    "Alignment Check Fault",
+    "Machine Check Abort",
+    "SIMD Floating Point Fault",
+    "Virtualization Exception Fault",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved",
+    "Intel Reserved"
+};
+
+// -------------------------------------------------------------------------- //
+
+void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
+void IdtSetup(void);
+void IdtSetGate(uchar rank, ulong base, ushort selector, uchar flags);
+void IdtHandler(ulong intNo);
+static void EnablePIC(void);
+void SendEOItoPIC(uchar isr);
+
+extern void IdtInit();
+extern void isr0();
+extern void isr1();
+extern void isr2();
+extern void isr3();
+extern void isr4();
+extern void isr5();
+extern void isr6();
+extern void isr7();
+extern void isr8();
+extern void isr9();
+extern void isr10();
+extern void isr11();
+extern void isr12();
+extern void isr13();
+extern void isr14();
+extern void isr15();
+extern void isr16();
+extern void isr17();
+extern void isr18();
+extern void isr19();
+extern void isr20();
+extern void isr21();
+extern void isr22();
+extern void isr23();
+extern void isr24();
+extern void isr25();
+extern void isr26();
+extern void isr27();
+extern void isr28();
+extern void isr29();
+extern void isr30();
+extern void isr31();
+
+#endif
diff --git a/kaleid/kernel/cpu/cpuid.c b/kaleid/kernel/cpu/cpuid.c
index d1f756b..c6909d2 100644
--- a/kaleid/kernel/cpu/cpuid.c
+++ b/kaleid/kernel/cpu/cpuid.c
@@ -22,6 +22,7 @@
 //  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
 //----------------------------------------------------------------------------//
 
+#include <kernel/cpuid.h>
 
 char *KeGetVendorString(void) {
     return "Null";
diff --git a/kaleid/kernel/cpu/idt.c b/kaleid/kernel/cpu/idt.c
index 64c2606..082d60a 100644
--- a/kaleid/kernel/cpu/idt.c
+++ b/kaleid/kernel/cpu/idt.c
@@ -21,19 +21,175 @@
 //  You should have received a copy of the GNU General Public License         //
 //  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
 //----------------------------------------------------------------------------//
+
 #include <kernel/base.h>
-#include <kernel/cpu.h>
+#include <kernel/idt.h>
+#include <kernel/boot.h>
+#include <kernel/iomisc.h>
+#include <extras/buf.h>
+
+IdtEntry_t idt[256] = { 0 };
+IdtPtr_t idtPtr;
+
+IRQList_t irqList = { 0 };
 
-extern void lidt(Idtr_t reg);
 
 //
-// Registers the new idt in the idtr register.
+// Registers an isr with his IRQ to handle driver interrupts
 //
-static inline void loadIdt(void* idtAddr, ushort size)
+void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags)
 {
-    // The IDTR register structure that will be sent
-    Idtr_t IDTR = { size, idtAddr };
+    uchar n = irqList.n;
 
-    lidt(IDTR);
+    KalAssert(idt[0].flags==0); // IDT uninitialized
+
+    if ((n == 224))             // IRQs not filled
+        KeStartPanic("[IdtRegisterIrq] Cannot register IRQ %c function %p !",
+                     irq,
+                     isr
+                     );
+
+    irqList.entry[n].isr = isr;
+    irqList.entry[n].irq = irq;
+    irqList.entry[n].flags = flags;
+    irqList.n++;
 }
 
+//
+// Installs the IDT in order to activate the interrupts handling
+//
+void IdtSetup(void)
+{
+    // XXX detect the APIC with cpuid !
+    EnablePIC();
+
+    ushort codeSeg = (ushort)(ulong)BtLoaderInfo.codeSegment;
+
+    // Set IDT ptr
+    idtPtr.limit = (sizeof(IdtEntry_t) * 256) - 1;
+    idtPtr.base = &idt;
+
+    // Set IDT Exception Gates
+    IdtSetGate(0, (ulong)isr0, codeSeg, 0x8E);
+    IdtSetGate(1, (ulong)isr1, codeSeg, 0x8E);
+    IdtSetGate(2, (ulong)isr2, codeSeg, 0x8E);
+    IdtSetGate(3, (ulong)isr3, codeSeg, 0x8E);
+    IdtSetGate(4, (ulong)isr4, codeSeg, 0x8E);
+    IdtSetGate(5, (ulong)isr5, codeSeg, 0x8E);
+    IdtSetGate(6, (ulong)isr6, codeSeg, 0x8E);
+    IdtSetGate(7, (ulong)isr7, codeSeg, 0x8E);
+    IdtSetGate(8, (ulong)isr8, codeSeg, 0x8E);
+    IdtSetGate(9, (ulong)isr9, codeSeg, 0x8E);
+    IdtSetGate(10, (ulong)isr10, codeSeg, 0x8E);
+    IdtSetGate(11, (ulong)isr11, codeSeg, 0x8E);
+    IdtSetGate(12, (ulong)isr12, codeSeg, 0x8E);
+    IdtSetGate(13, (ulong)isr13, codeSeg, 0x8E);
+    IdtSetGate(14, (ulong)isr14, codeSeg, 0x8E);
+    IdtSetGate(15, (ulong)isr15, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(16, (ulong)isr16, codeSeg, 0x8E);
+    IdtSetGate(17, (ulong)isr17, codeSeg, 0x8E);
+    IdtSetGate(18, (ulong)isr18, codeSeg, 0x8E);
+    IdtSetGate(19, (ulong)isr19, codeSeg, 0x8E);
+    IdtSetGate(20, (ulong)isr20, codeSeg, 0x8E);
+    IdtSetGate(21, (ulong)isr21, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(22, (ulong)isr22, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(23, (ulong)isr23, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(24, (ulong)isr24, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(25, (ulong)isr25, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(26, (ulong)isr26, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(27, (ulong)isr27, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(28, (ulong)isr28, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(29, (ulong)isr29, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(30, (ulong)isr30, codeSeg, 0x8E);  // INTEL RESERVED
+    IdtSetGate(31, (ulong)isr31, codeSeg, 0x8E);  // INTEL RESERVED
+
+    // Set the IRQ Driver Gates
+    for (int i = 0 ; i < irqList.n ; i++) {
+        IdtSetGate(
+                   irqList.entry[i].irq,
+                   (ulong)irqList.entry[i].isr,
+                   codeSeg,
+                   irqList.entry[i].flags
+                   );
+    }
+
+    // Load IDT
+    IdtInit();
+    DebugLog("[IdtSetup] Initialized !\n");
+}
+
+//
+// Set an interrupt gate
+//
+void IdtSetGate(uchar rank, ulong base, ushort selector, uchar flags)
+{
+    // Set Base Address
+    idt[rank].baseLow = base & 0xFFFF;
+    idt[rank].baseMid = (base >> 16) & 0xFFFF;
+    idt[rank].baseHigh = (base >> 32) & 0xFFFFFFFF;
+
+    // Set Selector
+    idt[rank].selector = selector;
+    idt[rank].flags = flags;
+
+    // Set Reserved Areas to Zero
+    idt[rank].reservedIst = 0;
+    idt[rank].reserved = 0;
+}
+
+//
+// Enable and initializes the PIC to work correctly
+//
+static void EnablePIC(void)
+{
+    // Set ICW1 - begin init of the PIC
+    IoWriteByteOnPort(0x20, 0x11);
+    IoWriteByteOnPort(0xa0, 0x11);
+
+    // Set ICW2 (IRQ base offsets)
+    IoWriteByteOnPort(0x21, 0x20); //0x20 is the first free interrupt
+    IoWriteByteOnPort(0xa1, 0x28);
+
+    // Set ICW3
+    IoWriteByteOnPort(0x21, 0x0);
+    IoWriteByteOnPort(0xa1, 0x0);
+
+    // Set ICW4
+    IoWriteByteOnPort(0x21, 0x1);
+    IoWriteByteOnPort(0xa1, 0x1);
+
+    // Set OCW1 (interrupt masks)
+    IoWriteByteOnPort(0x21, 0xff);
+    IoWriteByteOnPort(0xa1, 0xff);
+}
+
+//
+// Ends the current interrupt handling
+//
+void SendEOItoPIC(uchar isr)
+{
+    if(isr >= 8)
+        IoWriteByteOnPort(0xa0,0x20);
+
+    IoWriteByteOnPort(0x20,0x20);
+}
+
+//
+// The main exception handler
+//
+void IdtHandler(ulong intNo)
+{
+    int irrecoverable = 0;
+    char *exceptionMsg = "Unhandled ISR exception";
+
+    if (intNo == 0 || intNo == 6 || intNo == 8 || intNo == 13) irrecoverable++;
+
+    if (intNo < 32) exceptionMsg = IsrExceptions[intNo];
+
+    if (irrecoverable) {
+        KeStartPanic("[ISR 0x%x] Irrecoverable %s\n", intNo, exceptionMsg);
+    } else {
+        bprintf(BStdOut, "[ISR 0x%x] %s\n", intNo, exceptionMsg);
+        SendEOItoPIC(intNo);
+    }
+}
diff --git a/kaleid/kernel/cpu/isr.asm b/kaleid/kernel/cpu/isr.asm
new file mode 100644
index 0000000..3491e6f
--- /dev/null
+++ b/kaleid/kernel/cpu/isr.asm
@@ -0,0 +1,143 @@
+;=----------------------------------------------------------------------------=;
+;                            GNU GPL OS/K                                      ;
+;                                                                              ;
+;   Desc: Interrupt Descriptor Table related functions                         ;
+;                                                                              ;
+;                                                                              ;
+;   Copyright © 2018-2019 The OS/K Team                                        ;
+;                                                                              ;
+;   This file is part of OS/K.                                                 ;
+;                                                                              ;
+;   OS/K is free software: you can redistribute it and/or modify               ;
+;   it under the terms of the GNU General Public License as published by       ;
+;   the Free Software Foundation, either version 3 of the License, or          ;
+;   (at your option) any later version.                                        ;
+;                                                                              ;
+;   OS/K is distributed in the hope that it will be useful,                    ;
+;   but WITHOUT ANY WARRANTY; without even the implied warranty of             ;
+;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              ;
+;   GNU General Public License for more details.                               ;
+;                                                                              ;
+;   You should have received a copy of the GNU General Public License          ;
+;   along with OS/K.  If not, see <https://www.gnu.org/licenses/>.             ;
+;=----------------------------------------------------------------------------=;
+
+%include "kaleid/kernel/cpu/isr.inc"
+
+global IdtInit
+global divideByZero
+extern idtPtr
+extern IdtHandler
+
+;;
+;; Loads the IDT
+;;
+IdtInit:
+    lidt [idtPtr]
+    ret
+
+;;
+;; Bug test
+;;
+divideByZero:
+    pushAll
+    mov eax, 17
+    mov ebx, 0
+    xor edx, edx
+    div ebx
+    popAll
+    ret
+
+;;
+;; ISR handler
+;;
+isrPreHandler:
+    pushAll
+
+    xor rax, rax
+    mov ax, ds
+    push rax
+
+    call IdtHandler
+
+    pop rax
+    mov ds, ax
+
+    popAll
+    sti
+    iretq
+
+;; Divide Error Fault
+IsrWithoutErrCode 0
+
+;; Debug Exception Fault/trap
+IsrWithoutErrCode 1
+
+;; NMI Interrupt
+IsrWithoutErrCode 2
+
+;; Breakpoint Trap
+IsrWithoutErrCode 3
+
+;; Overflow Trap
+IsrWithoutErrCode 4
+
+;; Bound Range Exceeded Fault
+IsrWithoutErrCode 5
+
+;; Invalid Opcode Fault
+IsrWithoutErrCode 6
+
+;; Device Not Available or No Math Coprocessor Fault
+IsrWithoutErrCode 7
+
+;; Coprocessor Segment Overrun Fault
+IsrWithoutErrCode 9
+
+;; x87 FPU Floating Point or Math Fault
+IsrWithoutErrCode 16
+
+;; Alignment Check Fault
+IsrWithoutErrCode 17
+
+;; Machine Check Abort
+IsrWithoutErrCode 18
+
+;; SIMD Floating Point Fault
+IsrWithoutErrCode 19
+
+;; Virtualization Exception Fault
+IsrWithoutErrCode 20
+
+;; Double Fault Abort
+IsrWithErrCode   8
+
+;; Invalid TSS Fault
+IsrWithErrCode   10
+
+;; Segment Not Present Fault
+IsrWithErrCode   11
+
+;; Stack Segment Fault
+IsrWithErrCode   12
+
+;; General Protection Fault
+IsrWithErrCode   13
+
+;; Page Fault
+IsrWithErrCode   14
+
+;; Reserved
+IsrWithoutErrCode 15
+IsrWithoutErrCode 21
+IsrWithoutErrCode 22
+IsrWithoutErrCode 23
+IsrWithoutErrCode 24
+IsrWithoutErrCode 25
+IsrWithoutErrCode 26
+IsrWithoutErrCode 27
+IsrWithoutErrCode 28
+IsrWithoutErrCode 29
+IsrWithoutErrCode 30
+IsrWithoutErrCode 31
+
diff --git a/kaleid/kernel/cpu/isr.inc b/kaleid/kernel/cpu/isr.inc
new file mode 100644
index 0000000..8f65def
--- /dev/null
+++ b/kaleid/kernel/cpu/isr.inc
@@ -0,0 +1,58 @@
+;=----------------------------------------------------------------------------=;
+;                            GNU GPL OS/K                                      ;
+;                                                                              ;
+;   Desc: Interrupt Descriptor Table related macros                            ;
+;                                                                              ;
+;                                                                              ;
+;   Copyright © 2018-2019 The OS/K Team                                        ;
+;                                                                              ;
+;   This file is part of OS/K.                                                 ;
+;                                                                              ;
+;   OS/K is free software: you can redistribute it and/or modify               ;
+;   it under the terms of the GNU General Public License as published by       ;
+;   the Free Software Foundation, either version 3 of the License, or          ;
+;   (at your option) any later version.                                        ;
+;                                                                              ;
+;   OS/K is distributed in the hope that it will be useful,                    ;
+;   but WITHOUT ANY WARRANTY; without even the implied warranty of             ;
+;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              ;
+;   GNU General Public License for more details.                               ;
+;                                                                              ;
+;   You should have received a copy of the GNU General Public License          ;
+;   along with OS/K.  If not, see <https://www.gnu.org/licenses/>.             ;
+;=----------------------------------------------------------------------------=;
+%macro pushAll 0
+      push   rax
+      push   rcx
+      push   rdx
+      push   rbx
+      push   rbp
+      push   rsi
+      push   rdi
+%endmacro
+
+%macro popAll 0
+      pop      rdi
+      pop      rsi
+      pop      rbp
+      pop      rbx
+      pop      rdx
+      pop      rcx
+      pop      rax
+%endmacro
+
+%macro IsrWithoutErrCode 1
+  global isr%1
+  isr%1:
+    cli
+    mov rdi, %1
+    jmp isrPreHandler
+%endmacro
+
+%macro IsrWithErrCode 1
+  global isr%1
+  isr%1:
+    cli
+    mov rdi, %1
+    jmp isrPreHandler
+%endmacro
diff --git a/kaleid/kernel/init/info.c b/kaleid/kernel/init/info.c
index d12fc5e..861d90f 100644
--- a/kaleid/kernel/init/info.c
+++ b/kaleid/kernel/init/info.c
@@ -29,7 +29,7 @@
 // BootInfo_t initialization. It is necessary because grub will potentially be
 //  wiped since it is below 1MB.... And we must reorganize all that stuff.
 //
-void BtInitBootInfo(multiboot_info_t *mbi)
+void BtInitBootInfo(multiboot_info_t *mbi, void *codeSeg)
 {
     extern ulong MB_header;
     extern ulong newKernelEnd;
@@ -44,6 +44,7 @@ void BtInitBootInfo(multiboot_info_t *mbi)
         BtLoaderInfo.grubName   = (char*)(ulong)(mbi->boot_loader_name);
         BtLoaderInfo.kernelAddr       = (void*)&MB_header;
         BtLoaderInfo.kernelEndAddr    = (void*)newKernelEnd;
+        BtLoaderInfo.codeSegment      = codeSeg;
         BtLoaderInfo.valid            = 1;
     }
     if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MODS) {
diff --git a/kaleid/kernel/init/init.c b/kaleid/kernel/init/init.c
index 18f977d..4f03219 100644
--- a/kaleid/kernel/init/init.c
+++ b/kaleid/kernel/init/init.c
@@ -31,23 +31,42 @@
 
 // info.c
 extern void BtDoSanityChecks(uint mbMagic);
-extern void BtInitBootInfo(multiboot_info_t *mbi);
+extern void BtInitBootInfo(multiboot_info_t *mbi, void *codeSeg);
 
 // io/vga.c
 extern error_t IoInitVGABuffer(void);
 
+//io/keyb.c
+extern void IoSetupKeyb(void);
+
+//io/rtc.c
+extern void IoSetupRtc(void);
+extern void IoEnableRtc(void);
+extern ulong IoRtcTicks;
+
+// cpu/idt.c
+extern void IdtSetup(void);
+
 // ps/proc.c test function
 extern void pstest(void);
 
+// interrupts tests
+extern void divideByZero(void);
+
+void test(void)
+{
+    asm volatile ("hlt");
+}
+
 //
 // Entry point of the Kaleid kernel
 //
-noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic)
+noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic, void *codeSeg)
 {
     KeDisableIRQs();
 
     // Initialize the BootInfo_t structure
-    BtInitBootInfo(mbInfo);
+    BtInitBootInfo(mbInfo, codeSeg);
 
     // Screen I/O available from this point on
     IoInitVGABuffer();
@@ -61,12 +80,27 @@ noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic)
 
     // Memory & scheduler
     MmInitMemoryMap();
+
+    // Several inits
     MmInitHeap();
     PsInitSched();
 
-    int i=1;
-    for(;i<=25;i++)BUGON(KernLog("%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%4d%3d\n",i,i,i,i,i,i,i,i,i,i,i,i,i,i,i,i,i,i,i,i));
-    KernLog("Cursor test:");
+    // Drivers ISR inits
+    IoSetupRtc();
+    // Interrupts launching
+    IdtSetup();
+    KeEnableIRQs();
+    // Drivers enabling
+    IoEnableRtc();
+
+    while (1) {
+        asm volatile ("hlt");
+        if (IoRtcTicks > 2000) {
+            KernLog("CC\n");
+            break;
+        }
+    }
+    KernLog("\nGoodbye after %d ticks", IoRtcTicks);
 
     // End this machine's suffering
     BFlushBuf(BStdOut);
diff --git a/kaleid/kernel/init/table.c b/kaleid/kernel/init/table.c
index 0261a15..88a3169 100644
--- a/kaleid/kernel/init/table.c
+++ b/kaleid/kernel/init/table.c
@@ -31,3 +31,5 @@ volatile BootInfo_t     BtBootTab = {0};
 volatile bool           KeIsPanicking = 0;
 
 volatile Processor_t    *KeCurCPU = &_KeCPUTable[0];
+
+
diff --git a/kaleid/kernel/io/keyb.asm b/kaleid/kernel/io/keyb.asm
new file mode 100644
index 0000000..5128db4
--- /dev/null
+++ b/kaleid/kernel/io/keyb.asm
@@ -0,0 +1,69 @@
+;=----------------------------------------------------------------------------=;
+;                            GNU GPL OS/K                                      ;
+;                                                                              ;
+;   Desc:   Basic Read Only Keyboard Driver                                    ;
+;                   (x86_64 architecture only)                                 ;
+;                                                                              ;
+;                                                                              ;
+;   Copyright © 2018-2019 The OS/K Team                                        ;
+;                                                                              ;
+;   This file is part of OS/K.                                                 ;
+;                                                                              ;
+;   OS/K is free software: you can redistribute it and/or modify               ;
+;   it under the terms of the GNU General Public License as published by       ;
+;   the Free Software Foundation, either version 3 of the License, or          ;
+;   (at your option) any later version.                                        ;
+;                                                                              ;
+;   OS/K is distributed in the hope that it will be useful,                    ;
+;   but WITHOUT ANY WARRANTY; without even the implied warranty of             ;
+;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              ;
+;   GNU General Public License for more details.                               ;
+;                                                                              ;
+;   You should have received a copy of the GNU General Public License          ;
+;   along with OS/K.  If not, see <https://www.gnu.org/licenses/>.             ;
+;=----------------------------------------------------------------------------=;
+
+[BITS 64]
+
+global KeybIsr
+extern KeybHandler
+
+%macro pushAll 0
+      push   rax
+      push   rcx
+      push   rdx
+      push   rbx
+      push   rbp
+      push   rsi
+      push   rdi
+%endmacro
+
+%macro popAll 0
+      pop      rdi
+      pop      rsi
+      pop      rbp
+      pop      rbx
+      pop      rdx
+      pop      rcx
+      pop      rax
+%endmacro
+
+;;
+;; Keyboard handler
+;;
+KeybIsr:
+    cli
+    pushAll
+
+    xor rax, rax
+    mov ax, ds
+    push rax
+
+    call KeybHandler
+
+    pop rax
+    mov ds, ax
+
+    popAll
+    sti
+    iretq
diff --git a/kaleid/kernel/io/keyb.c b/kaleid/kernel/io/keyb.c
new file mode 100644
index 0000000..6184e16
--- /dev/null
+++ b/kaleid/kernel/io/keyb.c
@@ -0,0 +1,56 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Desc:  Basic Read Only Keyboard Driver                                    //
+//                                                                            //
+//                                                                            //
+//  Copyright © 2018-2019 The OS/K Team                                       //
+//                                                                            //
+//  This file is part of OS/K.                                                //
+//                                                                            //
+//  OS/K is free software: you can redistribute it and/or modify              //
+//  it under the terms of the GNU General Public License as published by      //
+//  the Free Software Foundation, either version 3 of the License, or         //
+//  any later version.                                                        //
+//                                                                            //
+//  OS/K is distributed in the hope that it will be useful,                   //
+//  but WITHOUT ANY WARRANTY//without even the implied warranty of            //
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
+//  GNU General Public License for more details.                              //
+//                                                                            //
+//  You should have received a copy of the GNU General Public License         //
+//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
+//----------------------------------------------------------------------------//
+
+#include <kernel/base.h>
+#include <kernel/iomisc.h>
+
+extern void KeybIsr(void);
+extern void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
+extern void SendEOItoPIC(void);
+
+void IoSetupKeyb(void)
+{
+    IdtRegisterIrq(KeybIsr, 0x21, 0x8E);
+}
+
+
+uchar KeybHandler(void)
+{
+    char status;
+    char code = 0;
+
+    // write EOI
+    IoWriteByteOnPort(0x20, 0x20);
+
+    status = IoReadByteFromPort(0x64);
+
+    if (status & 0x01) {
+        code = IoReadByteFromPort(0x60);
+
+        if(code < 0) code = 0;
+    }
+
+    return code;
+}
+
diff --git a/kaleid/kernel/io/rtc.asm b/kaleid/kernel/io/rtc.asm
new file mode 100644
index 0000000..0457ad4
--- /dev/null
+++ b/kaleid/kernel/io/rtc.asm
@@ -0,0 +1,69 @@
+;=----------------------------------------------------------------------------=;
+;                            GNU GPL OS/K                                      ;
+;                                                                              ;
+;   Desc:   Basic Read Only Keyboard Driver                                    ;
+;                   (x86_64 architecture only)                                 ;
+;                                                                              ;
+;                                                                              ;
+;   Copyright © 2018-2019 The OS/K Team                                        ;
+;                                                                              ;
+;   This file is part of OS/K.                                                 ;
+;                                                                              ;
+;   OS/K is free software: you can redistribute it and/or modify               ;
+;   it under the terms of the GNU General Public License as published by       ;
+;   the Free Software Foundation, either version 3 of the License, or          ;
+;   (at your option) any later version.                                        ;
+;                                                                              ;
+;   OS/K is distributed in the hope that it will be useful,                    ;
+;   but WITHOUT ANY WARRANTY; without even the implied warranty of             ;
+;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              ;
+;   GNU General Public License for more details.                               ;
+;                                                                              ;
+;   You should have received a copy of the GNU General Public License          ;
+;   along with OS/K.  If not, see <https://www.gnu.org/licenses/>.             ;
+;=----------------------------------------------------------------------------=;
+
+[BITS 64]
+
+global RtcIsr
+extern RtcHandler
+
+%macro pushAll 0
+      push   rax
+      push   rcx
+      push   rdx
+      push   rbx
+      push   rbp
+      push   rsi
+      push   rdi
+%endmacro
+
+%macro popAll 0
+      pop      rdi
+      pop      rsi
+      pop      rbp
+      pop      rbx
+      pop      rdx
+      pop      rcx
+      pop      rax
+%endmacro
+
+;;
+;; Keyboard handler
+;;
+RtcIsr:
+    cli
+    pushAll
+
+    xor rax, rax
+    mov ax, ds
+    push rax
+
+    call RtcHandler
+
+    pop rax
+    mov ds, ax
+
+    popAll
+    sti
+    iretq
diff --git a/kaleid/kernel/io/rtc.c b/kaleid/kernel/io/rtc.c
new file mode 100644
index 0000000..f7d7548
--- /dev/null
+++ b/kaleid/kernel/io/rtc.c
@@ -0,0 +1,83 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Desc:  Interrupt related functions                                        //
+//                                                                            //
+//                                                                            //
+//  Copyright © 2018-2019 The OS/K Team                                       //
+//                                                                            //
+//  This file is part of OS/K.                                                //
+//                                                                            //
+//  OS/K is free software: you can redistribute it and/or modify              //
+//  it under the terms of the GNU General Public License as published by      //
+//  the Free Software Foundation, either version 3 of the License, or         //
+//  any later version.                                                        //
+//                                                                            //
+//  OS/K is distributed in the hope that it will be useful,                   //
+//  but WITHOUT ANY WARRANTY//without even the implied warranty of            //
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
+//  GNU General Public License for more details.                              //
+//                                                                            //
+//  You should have received a copy of the GNU General Public License         //
+//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
+//----------------------------------------------------------------------------//
+
+#include <kernel/base.h>
+#include <kernel/iomisc.h>
+#include <extras/buf.h>
+
+extern void RtcIsr(void);
+extern void SendEOItoPIC(void);
+extern void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
+
+ulong IoRtcTicks = 0;
+
+void IoSetupRtc(void)
+{
+    IdtRegisterIrq(RtcIsr, 0x28, 0x8E);
+}
+
+void IoEnableRtc(void)
+{
+    ulong flags = KePauseIRQs();
+    char readedInterruptConfig;
+    char readedRegister;
+    char readedIrqs;
+    uchar RtcRate;
+
+    // Setting up the register control and interrupt rates
+    RtcRate = 0x05;
+
+    IoWriteByteOnPort(0x70, 0x8B);
+    readedRegister = IoReadByteFromPort(0x71);
+    IoWriteByteOnPort(0x70, 0x8B);                  // Because reading flushes
+    IoWriteByteOnPort(0x71, readedRegister | 0x40);
+
+    IoWriteByteOnPort(0x70, 0x8A);
+    readedInterruptConfig = IoReadByteFromPort(0x71);
+    IoWriteByteOnPort(0x70, 0x8A);                  // Because reading flushes
+    IoWriteByteOnPort(0x71, (readedInterruptConfig & 0xF0) | RtcRate);
+    IoWriteByteOnPort(0x70, 0x0C);
+    IoReadByteFromPort(0x71);                       // Flush
+
+    // Setting up the IRQs
+    readedIrqs = IoReadByteFromPort(0xA1);
+    IoWriteByteOnPort(0xA1, 0xFE & readedIrqs);     // Enables IRQ on PIC 2
+    readedIrqs = IoReadByteFromPort(0x21);
+    IoWriteByteOnPort(0x21, 0xFB & readedIrqs);     // Enables IRQ on PIC 1
+
+    // clean-up
+    IoWriteByteOnPort(0x70, 0x0C);                  // Select status reg C
+    IoReadByteFromPort(0x71);                       // Flush
+    KeRestoreIRQs(flags);
+}
+
+void RtcHandler(void)
+{
+    //bprintf(BStdOut, " *RTC - ");
+    IoWriteByteOnPort(0x70, 0x0C);  // Selects status reg C
+    IoReadByteFromPort(0x71);       // Flush
+    IoRtcTicks++;
+    SendEOItoPIC();
+    //bprintf(BStdOut, " - EOI* ");
+}
diff --git a/kaleid/kernel/mm/gdt.c b/kaleid/kernel/mm/gdt.c
index bc41b29..8fcca54 100644
--- a/kaleid/kernel/mm/gdt.c
+++ b/kaleid/kernel/mm/gdt.c
@@ -50,6 +50,7 @@ void MmInitGdt(void)
     gdtPtr.limit = (sizeof(GdtEntry_t) * 5) - 1;
     gdtPtr.base  = (uint)(ullong)&gdtEntries;
 
+    SetGdtEntry(0,0,0,0,0);
 
     /* XXX set TSS register */
 
diff --git a/kaleid/kernel/mm/map.c b/kaleid/kernel/mm/map.c
index a833ccb..c876a50 100644
--- a/kaleid/kernel/mm/map.c
+++ b/kaleid/kernel/mm/map.c
@@ -68,9 +68,10 @@ static error_t InitMemoryMap(void)
 
     // fill the map
     while (currentEntry < mapEnd) {
+
         // memory zone address
-        memoryMap.entry[i].addr = (void*)((ulong)currentEntry->addr_low +
-                                    (((ulong)currentEntry->addr_high) << 32 ));
+        memoryMap.entry[i].addr = (void*)((ullong)currentEntry->addr_low +
+                                    (((ullong)currentEntry->addr_high) << 32 ));
         // memory zone size in bytes
         memoryMap.entry[i].length = (ulong)currentEntry->len_low +
                                     (((ulong)currentEntry->len_high) << 32);
@@ -100,10 +101,10 @@ static error_t InitMemoryMap(void)
     if (memoryMap.freeRamSize < MINIMUM_RAM_SIZE)
         return ENOMEM;
 
-    KernLog("[InitMemoryMap] Available Ram Size : %u Mio, Used Ram Size : %u Kio\n",
+    DebugLog("[InitMemoryMap] Available Ram Size : %u Mio, Used Ram Size : %u Kio\n\n",
             memoryMap.freeRamSize / MB, memoryMap.nonfreeRamSize / KB);
-    KernLog("[InitMemoryMap] Physical Ram Size : %d Mio\n\n",
-            (memoryMap.freeRamSize + memoryMap.nonfreeRamSize) / MB);
+    /*DebugLog("[InitMemoryMap] Physical Ram Size : %d Mio\n\n",
+            (memoryMap.freeRamSize + memoryMap.nonfreeRamSize) / MB);*/
 
     return EOK;
 }
@@ -192,7 +193,7 @@ void MmPrintMemoryMap(void) {
         default:;
         }
 
-        KernLog("Mem zone : %p\t%s\twith length: %d Kio\n",
+        KernLog("Mem zone : %lp\t%s\twith length: %d Kio\n",
                 memoryMap.entry[i].addr,
                 avStr,
                 memoryMap.entry[i].length / KB