diff --git a/.gitignore b/.gitignore
index 727feee..f87c2b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,4 @@ bochsrc.bxrc
 *.mod
 webring.json
 webring.txt
+kernel/const.inc
diff --git a/kernel/Makefile b/kernel/Makefile
index eaf4ce7..73df900 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -17,6 +17,10 @@ SRCS	= kernel.asm \
 .PHONY: all
 all: $(KERNEL)
 
+PHONY: const.inc
+const.inc: const.inc.in
+	sh $(TOOLSDIR)/version.sh $< $@
+
 $(KERNEL): $(SRCS)
 	$(AS) kernel.asm $@
 
diff --git a/kernel/const.inc b/kernel/const.inc.in
similarity index 62%
rename from kernel/const.inc
rename to kernel/const.inc.in
index 299beb3..8aa4da9 100644
--- a/kernel/const.inc
+++ b/kernel/const.inc.in
@@ -7,9 +7,11 @@ PSIZE = 0x1000
 STPDBOOT_MAGIC = 0x53545044
 
 ; --------- VERSION -------------
-VERSION_MAJOR = 1
-VERSION_MINOR = 0
-VERSION_COMMIT = "@COMMIT@"
+VERSION_MAJOR  = @MAJOR@
+VERSION_MINOR  = @MINOR@
+VERSION_COMMIT equ "@COMMIT@"
+VERSION_FULL   equ "@FULLVERSION@"
+BUILD_DATE     equ "@DATE@"
 
 ; ------------- OTHER -----------
 CR   = 0x0D
diff --git a/kernel/dev/vga_console.inc b/kernel/dev/vga_console.inc
index bba8992..dd12861 100644
--- a/kernel/dev/vga_console.inc
+++ b/kernel/dev/vga_console.inc
@@ -16,7 +16,10 @@ vga_console_clear:
 	rep stosb
 	ret
 
+	;; Function: vga_console_putc
+	;;
+	;; In:
+	;;    AL - charactere to print
 vga_console_putc:
-	
-	ret
 
+	ret
diff --git a/kernel/irq.inc b/kernel/irq.inc
index 03c007e..e69de29 100644
--- a/kernel/irq.inc
+++ b/kernel/irq.inc
@@ -1,3 +0,0 @@
-irq_timer:
-	iret 
-
diff --git a/kernel/isr.inc b/kernel/isr.inc
index ddf3f08..1f1c785 100644
--- a/kernel/isr.inc
+++ b/kernel/isr.inc
@@ -1,9 +1,15 @@
+	;; File: isr.inc
 macro ISR [name,error] {
 forward
 	dd isr_#name
+forward
+	local szIntName
+ szIntName db  `name#, 0
 forward
 	isr_#name#:
 		cli
+		mov esi, szIntName
+		call klog
 		if error eq 0
 		push 0
 		end if
@@ -25,6 +31,17 @@ idt_setup:
 	inc ecx
 	cmp ecx, 32
 	jb @b
+@@:
+	mov eax, irq_dummy
+	mov [aInterruptGate + (ecx * 8)], ax
+	mov [aInterruptGate + (ecx * 8) + 2], word 0x08
+
+	mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
+	shr eax, 16
+	mov [aInterruptGate + (ecx * 8) + 6], ax
+	inc ecx
+	cmp ecx, 0x30
+	jb @b
 
 	mov ecx, 0x42
 	mov eax, isr_syscall
@@ -49,6 +66,9 @@ aInterruptGate:
 .end:
 
 
+irq_dummy:
+	iret
+
 isr_common:
 	pusha
 
@@ -61,6 +81,9 @@ isr_common:
 	mov fs, ax
 	mov gs, ax
 
+	mov eax, [esp+IntFrame.intno]
+	push eax
+
 	mov esi, szMsgInterrupt
 	call klog 
 
@@ -110,4 +133,4 @@ ISR \
 	security_exception, 0, \
 	reserved31, 0
 
-szMsgInterrupt db "Interrupt", 0
+szMsgInterrupt db "Interrupt (int: %x)", 0
diff --git a/kernel/kernel.asm b/kernel/kernel.asm
index 30b08e4..c487854 100644
--- a/kernel/kernel.asm
+++ b/kernel/kernel.asm
@@ -63,7 +63,7 @@ kmain:
 
 	call idt_setup
 
-	int 0x42
+	;int 0x42
 
 .halt:
 	hlt
@@ -84,7 +84,7 @@ kmain:
 	include 'pic.inc'
 
 
-szMsgKernelAlive db "Kernel is alive", 0
+szMsgKernelAlive db "Kernel (", VERSION_FULL , ") is alive", 0
 szErrorBootProtocol db "Error: wrong magic number", 0
 
 boot_structure BootInfo
diff --git a/kernel/pic.inc b/kernel/pic.inc
index fcaae5d..8998321 100644
--- a/kernel/pic.inc
+++ b/kernel/pic.inc
@@ -50,6 +50,20 @@ pic_init:
 
 	ret
 
+	;; Function: pic_eoi
+	;;
+	;; In:
+	;;    EAX - irq
+pic_eoi:
+	cmp eax, 8
+	jb @f
+	mov al, PIC_EOI
+	out PIC2_COMMAND, al
+@@:
+	mov al, PIC_EOI
+	out PIC1_COMMAND, al
+	ret
+
 pic_disable:
 	mov al, 0xFF
 	out PIC1_DATA, al
diff --git a/kernel/sys/cpu.inc b/kernel/sys/cpu.inc
index e11de06..922bbf2 100644
--- a/kernel/sys/cpu.inc
+++ b/kernel/sys/cpu.inc
@@ -133,7 +133,7 @@ struc IDTGate {
 	;; > +--------------- |----------------+-----------------|-----------------+
 
 
-struc intframe {
+struc IntFrame {
 	;; registers
 	.edi dd ?
 	.esi dd ?
@@ -161,3 +161,7 @@ struc intframe {
 	.useresp  dd ?
 	.ss       dd ?
 }
+virtual at 0
+  IntFrame IntFrame
+  sizeof.IntFrame:
+end virtual
diff --git a/kernel/syscall.inc b/kernel/syscall.inc
index d4ad6a0..c21550b 100644
--- a/kernel/syscall.inc
+++ b/kernel/syscall.inc
@@ -1,5 +1,7 @@
-SYSCALL_EXIT = 0x01
-SYSCALL_FORK = 0x02
+SYSCALL_EXIT  = 0x01
+SYSCALL_FORK  = 0x02
+SYSCALL_READ  = 0x03
+SYSCALL_WRITE = 0x04
 
 isr_syscall:
 	push eax
diff --git a/tools/fat.c b/tools/fat.c
index 6ed9961..9f6eb61 100644
--- a/tools/fat.c
+++ b/tools/fat.c
@@ -1,226 +1,226 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdarg.h>
-#include <libgen.h>
-#include <errno.h>
-
-typedef struct
-{
-  uint8_t jmp[3];
-  uint8_t OEM[8];
-  uint16_t bytes_per_sector;
-  uint8_t sectors_per_cluster;
-  uint16_t reserved_sectors;
-  uint8_t number_of_FATs;
-  uint16_t root_entries;
-  uint16_t logical_sectors;
-  uint8_t media_descriptor;
-  uint16_t sectors_per_FAT;
-  uint16_t sectors_per_track;
-  uint16_t heads_per_cylinder;
-  uint32_t hidden_sectors;
-  uint32_t total_sectors;
-
-  /* EBPB */
-  uint8_t drive_number;
-  uint8_t flags;
-  uint8_t signature;
-  uint32_t serial;
-  uint8_t label[11];
-  uint8_t fs_type[8];
-} __attribute__((packed)) BiosParamBlock;
-
-typedef struct
-{
-  uint8_t  name[8];
-  uint8_t  ext[3];
-  uint8_t  attr;
-  uint16_t reserved0;
-  uint16_t creation_time;
-  uint16_t creation_date;
-  uint16_t access_date;
-  uint16_t reserved1;
-  uint16_t mod_time;
-  uint16_t mod_date;
-  uint16_t start;
-  uint32_t size;
-} __attribute__((packed)) Entry;
-
-static const char *prg_name;
-static int sector_size = 512;
-
-static void
-fatal(const char *str, ...)
-{
-  va_list ap;
-
-  fprintf(stderr, "%s: ", prg_name);
-  va_start(ap, str);
-  vfprintf(stderr, str, ap);
-  va_end(ap);
-  fprintf(stderr, "\n");
-
-  exit(EXIT_FAILURE);
-}
-
-static void
-read_sector(uint8_t *dest, int sect, FILE *fp)
-{
-  if (fseek(fp, sect*sector_size, SEEK_SET) != 0) goto fatal_sect;
-  if (fread(dest, 1, sector_size, fp) != sector_size) goto fatal_sect;
-
-  return;
-
- fatal_sect:
-  fatal("Can't read sector %d", sect);
-}
-
-static void
-dump_bpb(BiosParamBlock *bpb)
-{
-  char label[12];
-
-  printf("Bytes per logical sector: %hd\n", bpb->bytes_per_sector);
-  sector_size = bpb->bytes_per_sector;
-  printf("Logical sectors per cluster: %d\n", bpb->sectors_per_cluster);
-  printf("Reserved logical sectors: %hd\n", bpb->reserved_sectors);
-  printf("Number of FATs: %d\n", bpb->number_of_FATs);
-  printf("Root directory entries: %hd\n", bpb->root_entries);
-  printf("Total logical sectors: %hd\n", bpb->logical_sectors);
-  printf("Logical sectors per FAT: %hd\n", bpb->sectors_per_FAT);
-  printf("Serial: %X\n", bpb->serial);
-  memset(label, 0, 12);
-  strncpy(label, bpb->label, 11);
-  printf("Label: '%s'\n", label);
-  printf("signature: %X\n", bpb->signature);
-}
-
-static void
-dump_entry(Entry *entry)
-{
-  char filename[9];
-  char ext[4];
-  int i;
-
-  if (entry->name[0] == 0x0) return;
-
-  memset(filename, 0, 9);
-  strncpy(filename, entry->name, 8);
-  memset(ext, 0, 4);
-  strncpy(ext, entry->ext, 3);
-  for (i = 7; i > 0; i--)
-    {
-      if (filename[i] == ' ')
-	{
-	  filename[i] = '\0';
-	}
-      else
-	{
-	  break;
-	}
-    }
-
-  printf("%s.%s\n", filename, ext);
-}
-
-static void
-dump(const char *img)
-{
-  FILE *fp;
-  BiosParamBlock *bpb;
-  uint8_t buffer[512];
-  int root_start;
-  int root_size;
-  int i;
-  int j;
-
-  fp = fopen(img, "rb");
-  if (fp == NULL) fatal("Can't open '%s': %s", img, strerror(errno));
-
-  read_sector(buffer, 0, fp);
-  if (buffer[511] != 0xAA || buffer[510] != 0x55)
-    {
-      fatal("MBR not found");
-    }
-
-  bpb = (BiosParamBlock *)buffer;
-
-  dump_bpb(bpb);
-
-  root_start = bpb->sectors_per_FAT * bpb->number_of_FATs;
-  root_start += bpb->reserved_sectors;
-
-  root_size = bpb->root_entries / (sector_size >> 0x5);
-
-  for (i = 0; i < root_size; i++)
-    {
-      read_sector(buffer, root_start + i, fp);
-      for (j = 0; j < sector_size; j+=32)
-	{
-	  dump_entry((Entry *)(buffer + j));
-	}
-    }
-
-  fclose(fp);
-  exit(EXIT_SUCCESS);
-}
-
-static void
-usage(int retcode)
-{
-  if (retcode == EXIT_FAILURE)
-    {
-      fprintf(stderr, "Try '%s -h' form more information.\n", prg_name);
-    }
-  else
-    {
-      printf("Usage: %s [-hV] [-D IMG] [-b BIN]\n", prg_name);
-      printf("\t-h\tdisplay this help and exit\n");
-      printf("\t-V\toutput version information\n");
-      printf("\t-D IMG\tdump fs information from IMG\n");
-
-      printf("\nReport bugs to <%s>\n", MK_BUGREPORT);
-    }
-  exit(retcode);
-}
-
-static void
-version(void)
-{
-  printf("%s commit %s\n", prg_name, MK_COMMIT);
-  exit(EXIT_SUCCESS);
-}
-
-int
-main(int argc, char **argv)
-{
-  prg_name = argv[0];
-
-  while ((argc > 1) && (argv[1][0] == '-'))
-    {
-      switch (argv[1][1])
-	{
-	case 'h':
-	  usage(EXIT_SUCCESS);
-	  break;
-	case 'V':
-	  version();
-	  break;
-	case 'D':
-	  argv++;
-	  argc--;
-	  if (argc <= 1) usage(EXIT_FAILURE);
-	  dump(argv[1]);
-	  break;
-	default:
-	  usage(EXIT_FAILURE);
-	  break;
-	}
-
-      argv++;
-      argc--;
-    }
-  return (EXIT_SUCCESS);
-}
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdarg.h>
+#include <libgen.h>
+#include <errno.h>
+
+typedef struct
+{
+  uint8_t jmp[3];
+  uint8_t OEM[8];
+  uint16_t bytes_per_sector;
+  uint8_t sectors_per_cluster;
+  uint16_t reserved_sectors;
+  uint8_t number_of_FATs;
+  uint16_t root_entries;
+  uint16_t logical_sectors;
+  uint8_t media_descriptor;
+  uint16_t sectors_per_FAT;
+  uint16_t sectors_per_track;
+  uint16_t heads_per_cylinder;
+  uint32_t hidden_sectors;
+  uint32_t total_sectors;
+
+  /* EBPB */
+  uint8_t drive_number;
+  uint8_t flags;
+  uint8_t signature;
+  uint32_t serial;
+  uint8_t label[11];
+  uint8_t fs_type[8];
+} __attribute__((packed)) BiosParamBlock;
+
+typedef struct
+{
+  uint8_t  name[8];
+  uint8_t  ext[3];
+  uint8_t  attr;
+  uint16_t reserved0;
+  uint16_t creation_time;
+  uint16_t creation_date;
+  uint16_t access_date;
+  uint16_t reserved1;
+  uint16_t mod_time;
+  uint16_t mod_date;
+  uint16_t start;
+  uint32_t size;
+} __attribute__((packed)) Entry;
+
+static const char *prg_name;
+static int sector_size = 512;
+
+static void
+fatal(const char *str, ...)
+{
+  va_list ap;
+
+  fprintf(stderr, "%s: ", prg_name);
+  va_start(ap, str);
+  vfprintf(stderr, str, ap);
+  va_end(ap);
+  fprintf(stderr, "\n");
+
+  exit(EXIT_FAILURE);
+}
+
+static void
+read_sector(uint8_t *dest, int sect, FILE *fp)
+{
+  if (fseek(fp, sect*sector_size, SEEK_SET) != 0) goto fatal_sect;
+  if (fread(dest, 1, sector_size, fp) != sector_size) goto fatal_sect;
+
+  return;
+
+ fatal_sect:
+  fatal("Can't read sector %d", sect);
+}
+
+static void
+dump_bpb(BiosParamBlock *bpb)
+{
+  char label[12];
+
+  printf("Bytes per logical sector: %hd\n", bpb->bytes_per_sector);
+  sector_size = bpb->bytes_per_sector;
+  printf("Logical sectors per cluster: %d\n", bpb->sectors_per_cluster);
+  printf("Reserved logical sectors: %hd\n", bpb->reserved_sectors);
+  printf("Number of FATs: %d\n", bpb->number_of_FATs);
+  printf("Root directory entries: %hd\n", bpb->root_entries);
+  printf("Total logical sectors: %hd\n", bpb->logical_sectors);
+  printf("Logical sectors per FAT: %hd\n", bpb->sectors_per_FAT);
+  printf("Serial: %X\n", bpb->serial);
+  memset(label, 0, 12);
+  strncpy(label, bpb->label, 11);
+  printf("Label: '%s'\n", label);
+  printf("signature: %X\n", bpb->signature);
+}
+
+static void
+dump_entry(Entry *entry)
+{
+  char filename[9];
+  char ext[4];
+  int i;
+
+  if (entry->name[0] == 0x0) return;
+
+  memset(filename, 0, 9);
+  strncpy(filename, entry->name, 8);
+  memset(ext, 0, 4);
+  strncpy(ext, entry->ext, 3);
+  for (i = 7; i > 0; i--)
+    {
+      if (filename[i] == ' ')
+	{
+	  filename[i] = '\0';
+	}
+      else
+	{
+	  break;
+	}
+    }
+
+  printf("%s.%s\n", filename, ext);
+}
+
+static void
+dump(const char *img)
+{
+  FILE *fp;
+  BiosParamBlock *bpb;
+  uint8_t buffer[512];
+  int root_start;
+  int root_size;
+  int i;
+  int j;
+
+  fp = fopen(img, "rb");
+  if (fp == NULL) fatal("Can't open '%s': %s", img, strerror(errno));
+
+  read_sector(buffer, 0, fp);
+  if (buffer[511] != 0xAA || buffer[510] != 0x55)
+    {
+      fatal("MBR not found");
+    }
+
+  bpb = (BiosParamBlock *)buffer;
+
+  dump_bpb(bpb);
+
+  root_start = bpb->sectors_per_FAT * bpb->number_of_FATs;
+  root_start += bpb->reserved_sectors;
+
+  root_size = bpb->root_entries / (sector_size >> 0x5);
+
+  for (i = 0; i < root_size; i++)
+    {
+      read_sector(buffer, root_start + i, fp);
+      for (j = 0; j < sector_size; j+=32)
+	{
+	  dump_entry((Entry *)(buffer + j));
+	}
+    }
+
+  fclose(fp);
+  exit(EXIT_SUCCESS);
+}
+
+static void
+usage(int retcode)
+{
+  if (retcode == EXIT_FAILURE)
+    {
+      fprintf(stderr, "Try '%s -h' form more information.\n", prg_name);
+    }
+  else
+    {
+      printf("Usage: %s [-hV] [-D IMG] [-b BIN]\n", prg_name);
+      printf("\t-h\tdisplay this help and exit\n");
+      printf("\t-V\toutput version information\n");
+      printf("\t-D IMG\tdump fs information from IMG\n");
+
+      printf("\nReport bugs to <%s>\n", MK_BUGREPORT);
+    }
+  exit(retcode);
+}
+
+static void
+version(void)
+{
+  printf("%s commit %s\n", prg_name, MK_COMMIT);
+  exit(EXIT_SUCCESS);
+}
+
+int
+main(int argc, char **argv)
+{
+  prg_name = argv[0];
+
+  while ((argc > 1) && (argv[1][0] == '-'))
+    {
+      switch (argv[1][1])
+	{
+	case 'h':
+	  usage(EXIT_SUCCESS);
+	  break;
+	case 'V':
+	  version();
+	  break;
+	case 'D':
+	  argv++;
+	  argc--;
+	  if (argc <= 1) usage(EXIT_FAILURE);
+	  dump(argv[1]);
+	  break;
+	default:
+	  usage(EXIT_FAILURE);
+	  break;
+	}
+
+      argv++;
+      argc--;
+    }
+  return (EXIT_SUCCESS);
+}
diff --git a/tools/git-version b/tools/version.sh
old mode 100755
new mode 100644
similarity index 50%
rename from tools/git-version
rename to tools/version.sh
index d92e4f6..2b7c198
--- a/tools/git-version
+++ b/tools/version.sh
@@ -6,6 +6,9 @@ if [ ! -n "$vers" ]; then
 	vers="0.0"
 fi
 
+major="$(echo -n "${vers}" | cut -d. -f1)"
+minor="$(echo -n "${vers}" | cut -d. -f1)"
+
 commit="$(git rev-parse --short HEAD)"
 
 full_vers="${vers}-${commit}"
@@ -13,4 +16,9 @@ if [ -n "$(git status)" ]; then
 	full_vers="${full_vers}-dirty"
 fi
 
-echo -n "${full_vers}"
+sed -e "s/@MAJOR@/${major}/g" \
+	-e "s/@MINOR@/${minor}/g" \
+	-e "s/@COMMIT@/${commit}/g"\
+	-e "s/@FULLVERSION@/${full_vers}/g" \
+	-e "s/@DATE@/$(date)/g" \
+	"$1" > "$2"