diff --git a/kernel/trunk/core/sched.inc b/kernel/trunk/core/sched.inc
index becd6ac429..1c31ef6c10 100644
--- a/kernel/trunk/core/sched.inc
+++ b/kernel/trunk/core/sched.inc
@@ -18,6 +18,8 @@ irq0:
         inc   dword [timer_ticks]
 
         mov   eax, [timer_ticks]
+        call  playNote           ; <<<--- Speaker driver
+
         cmp   eax,[next_usage_update]
         jb    .nocounter
         add   eax,100
@@ -25,8 +27,6 @@ irq0:
         call  updatecputimes
      .nocounter:
 
-        call  playNote           ; <<<--- Speaker driver
-
         mov   edi, [0x3010]
 
         mov   ebx, [edi+0x18] ; time stamp counter add
diff --git a/kernel/trunk/core/sys32.inc b/kernel/trunk/core/sys32.inc
index f5df89bd4e..0de30b25ad 100644
--- a/kernel/trunk/core/sys32.inc
+++ b/kernel/trunk/core/sys32.inc
@@ -168,7 +168,7 @@ endg
 unknown_interrupt:
      iret
 
-macro exceptions [num]
+macro exc_wo_code [num]
 {
   forward
   e#num :
@@ -176,7 +176,18 @@ macro exceptions [num]
       jmp exc_c
 }
 
-exceptions 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
+macro exc_w_code [num]
+{
+  forward
+  e#num :
+      add esp, 4
+      mov bl, num
+      jmp exc_c
+}
+
+exc_wo_code 0, 1, 2, 3, 4, 5, 6, 9, 15, 16 ; 18, 19
+exc_w_code 8, 10, 11, 12, 13, 14, 17
+
 exc_c:
         mov   ax, os_data
         mov   ds, ax
@@ -334,8 +345,10 @@ p_irq6:
      mov   es, ax
      call  fdc_irq
 
-     mov   edi,6
-     call  irqhandler
+     ;mov   edi,6
+     ;call  irqhandler
+     mov   al, 0x20
+     out   0x20, al
 
      pop   es ds
      popad
diff --git a/kernel/trunk/memmap.inc b/kernel/trunk/memmap.inc
index eefe39c071..a0bfab5170 100644
--- a/kernel/trunk/memmap.inc
+++ b/kernel/trunk/memmap.inc
@@ -119,7 +119,9 @@
 ;  3EC00  ->  3F5FF   basic text font II
 ;  3F600  ->  3FFFF   basic text font I
 ;  40000  ->  4FFFF   data of retrieved disks and partitions (Mario79)
-;  50000  ->  5FFFF   free
+
+;  50000  ->  5FFFF   free (64 Kb)
+
 ;  60000  ->  7FFFF   paging tables
 ;  80000  ->  8FFFF   additional app info, in 256 byte steps - 256 entries
 ;
@@ -164,6 +166,8 @@
 ;        +000A word   y size
 ;        +000C word   button id number : bits 16-31
 ;
+; 2C4000  -> 2CFFFF   free (48Kb)
+;
 ; 2D0000  -> 2DFFFF   reserved port area
 ;
 ;     0000   dword    no of port areas reserved
@@ -175,7 +179,7 @@
 ; 2E0000  -> 2EFFFF   irq data area
 ; 2F0000  -> 2FFFFF   low memory save
 ;
-; 300000  -> 45FFFF   background image, max 1 M
+; 300000  -> 45FFFF   background image, max 1,375 M
 ;
 ; 460000  -> 5FFFFF   display info
 ;