diff --git a/kernel/trunk/const.inc b/kernel/trunk/const.inc
index 70208e97b3..292666c0c0 100644
--- a/kernel/trunk/const.inc
+++ b/kernel/trunk/const.inc
@@ -190,6 +190,8 @@ TASK_DATA           equ (OS_BASE+0x0003020)
 TASK_EVENT          equ (OS_BASE+0x0003020)
 
 d_width_calc_area   equ (OS_BASE+0x0005000)
+BPSLine_calc_area   equ (OS_BASE+0x0339000)
+
 mouseunder          equ (OS_BASE+0x0006900)
 CDDataBuf           equ (OS_BASE+0x0007000)
 FLOPPY_BUFF         equ (OS_BASE+0x0008000)
diff --git a/kernel/trunk/kernel.asm b/kernel/trunk/kernel.asm
index 452c92ecbd..1a317afda5 100644
--- a/kernel/trunk/kernel.asm
+++ b/kernel/trunk/kernel.asm
@@ -403,6 +403,10 @@ high_code:
         mov     [_WinMapSize], eax
 
         call    calculate_fast_getting_offset_for_WinMapAddress
+; for Qemu or non standart video cards
+; Unfortunately [BytesPerScanLine] does not always 
+;                             equal to [_display.width] * [ScreenBPP] / 8
+        call    calculate_fast_getting_offset_for_LFB
 
         mov     esi, BOOT_VAR+0x9080
         movzx   ecx, byte [esi-1]
@@ -4849,6 +4853,21 @@ calculate_fast_getting_offset_for_WinMapAddress:
         ret
 ;------------------------------------------------------------------------------
 align 4
+calculate_fast_getting_offset_for_LFB:
+; calculate data area for fast getting offset to LFB
+        xor     eax, eax
+        mov     ecx, [_display.height]
+        inc     ecx
+        mov     edi, BPSLine_calc_area
+        cld
+@@:
+        stosd
+        add     eax, [BytesPerScanLine]
+        dec     ecx
+        jnz     @r
+        ret
+;------------------------------------------------------------------------------
+align 4
 set_screen:
         cmp     eax, [Screen_Max_X]
         jne     .set
diff --git a/kernel/trunk/memmap.inc b/kernel/trunk/memmap.inc
index 0f9e281ba0..eac5c173d0 100644
--- a/kernel/trunk/memmap.inc
+++ b/kernel/trunk/memmap.inc
@@ -246,7 +246,8 @@
 ;         04   dword  draw limit - y start
 ;         08   dword  draw limit - x end
 ;         0C   dword  draw limit - y end
-; 0x80339000 -> 3BFFF3   free (12k)
+; 0x80339000 -> 33A7FF   area for fast getting offset to LFB (6k)
+; 0x8033A800 -> 3BFFF3   free (6k)
 ; 0x8033BFF4 -> 33BFFF   background info 
 ; 0x8033C000             page map     (length b = memsize shr 15)
 ; 0x8033C000 + b         start of static pagetables
diff --git a/kernel/trunk/video/blitter.inc b/kernel/trunk/video/blitter.inc
index dd7b2b1141..3588f014c2 100644
--- a/kernel/trunk/video/blitter.inc
+++ b/kernel/trunk/video/blitter.inc
@@ -345,9 +345,10 @@ blit_32:
 
         mov     edi, ebp
 
-        imul    edi, [_display.pitch]
+;        imul    edi, [_display.pitch]
+        mov     edi, [BPSLine_calc_area+edi*4]
 ;        imul    ebp, [_display.width]
-        mov     ebp, [d_width_calc_area + ebp*4]
+        mov     ebp, [d_width_calc_area+ebp*4]
 
         add     ebp, ebx
         add     ebp, [_WinMapAddress]
diff --git a/kernel/trunk/video/cursors.inc b/kernel/trunk/video/cursors.inc
index 76081341c5..a02c927074 100644
--- a/kernel/trunk/video/cursors.inc
+++ b/kernel/trunk/video/cursors.inc
@@ -618,9 +618,7 @@ proc move_cursor_24 stdcall, hcursor:dword, x:dword, y:dword
         mov     [_dy], edx
 
 ;        mul     dword [BytesPerScanLine]
-        mov     eax, [d_width_calc_area + eax*4]
-        lea     eax, [eax + eax*2]
-
+        mov     eax, [BPSLine_calc_area+eax*4]
         lea     edx, [LFB_BASE+ecx*3]
         add     edx, eax
         mov     [cur_saved_base], edx
@@ -737,9 +735,7 @@ proc move_cursor_32 stdcall, hcursor:dword, x:dword, y:dword
         mov     [_dy], edx
 
 ;        mul     dword [BytesPerScanLine]
-        mov     eax, [d_width_calc_area + eax*4]
-        shl     eax, 2
-
+        mov     eax, [BPSLine_calc_area+eax*4]
         lea     edx, [LFB_BASE+eax+ecx*4]
         mov     [cur_saved_base], edx
 
diff --git a/kernel/trunk/video/vesa20.inc b/kernel/trunk/video/vesa20.inc
index 0165bf7df3..2a92184bb9 100644
--- a/kernel/trunk/video/vesa20.inc
+++ b/kernel/trunk/video/vesa20.inc
@@ -72,8 +72,7 @@ align 4
 .no_mouseunder:
 ;--------------------------------------
 ;        imul    ebx, [BytesPerScanLine] ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        lea     ebx, [ebx + ebx*2]
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [eax+eax*2]; edi = x*3
         add     edi, ebx      ; edi = x*3+(y*y multiplier)
         mov     ecx, [LFB_BASE+edi]
@@ -105,8 +104,7 @@ align 4
 .no_mouseunder:
 ;--------------------------------------
 ;        imul    ebx, [BytesPerScanLine] ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        shl     ebx, 2
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [ebx+eax*4]; edi = x*4+(y*y multiplier)
         mov     ecx, [LFB_BASE+edi]
 ;--------------------------------------
@@ -243,19 +241,7 @@ align 4
 ; pointer to screen
         mov     edx, [putimg.abs_cy]
 ;        imul    edx, [BytesPerScanLine]
-
-        mov     edx, [d_width_calc_area + edx*4]
-        cmp     bl, 4
-        je      .32
-        lea     edx, [edx+edx*2]
-        jmp     @f
-;-------------------------------------
-align 4
-.32:
-        shl     edx, 2
-;-------------------------------------
-align 4
-@@:
+        mov     edx, [BPSLine_calc_area+edx*4]
         mov     eax, [putimg.abs_cx]
 ;        movzx   ebx, byte [ScreenBPP]
 ;        shr     ebx, 3
@@ -740,9 +726,7 @@ Vesa20_putpixel24:
         mov     cx, bx
 
 ;        imul    ebx, [BytesPerScanLine]  ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        lea     ebx, [ebx + ebx*2]
-
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [eax+eax*2]; edi = x*3
         mov     eax, [esp+32-8+4]
 ;--------------------------------------
@@ -771,9 +755,7 @@ Vesa20_putpixel24_new:
         mov     cx, bx
 
 ;        imul    ebx, [BytesPerScanLine]  ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        lea     ebx, [ebx + ebx*2]
-
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [eax+eax*2]; edi = x*3
         mov     eax, [esp+32-8+4]
 ;--------------------------------------
@@ -819,9 +801,7 @@ Vesa20_putpixel32:
         mov     cx, bx
 
 ;        imul    ebx, [BytesPerScanLine]  ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        shl     ebx, 2
-
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [ebx+eax*4]; edi = x*4+(y*y multiplier)
         mov     eax, [esp+32-8+4]; eax = color
 ;--------------------------------------
@@ -849,9 +829,7 @@ Vesa20_putpixel32_new:
         mov     cx, bx
 
 ;        imul    ebx, [BytesPerScanLine]  ; ebx = y * y multiplier
-        mov     ebx, [d_width_calc_area + ebx*4]
-        shl     ebx, 2
-
+        mov     ebx, [BPSLine_calc_area+ebx*4]
         lea     edi, [ebx+eax*4]; edi = x*4+(y*y multiplier)
         mov     eax, [esp+32-8+4]; eax = color
 ;--------------------------------------
@@ -1238,19 +1216,7 @@ align 4
 ; pointer to screen
         mov     edx, [drbar.abs_cy]
 ;        imul    edx, [BytesPerScanLine]
-
-        mov     edx, [d_width_calc_area + edx*4]
-        cmp     bl, 4
-        je      .32
-        lea     edx, [edx+edx*2]
-        jmp     @f
-;-------------------------------------
-align 4
-.32:
-        shl     edx, 2
-;-------------------------------------
-align 4
-@@:
+        mov     edx, [BPSLine_calc_area+edx*4]
         mov     eax, [drbar.abs_cx]
         imul    eax, ebx
         add     edx, eax
@@ -1656,18 +1622,7 @@ dp2:
 ;                       and LFB data (output for our function) [edi]
 ;        mov     eax, [BytesPerScanLine]
 ;        mul     ebx
-        mov     eax, [d_width_calc_area + ebx*4]
-        cmp     [ScreenBPP], byte 32
-        je      .32
-        lea     eax, [eax+eax*2]
-        jmp     @f
-;-------------------------------------
-align 4
-.32:
-        shl     eax, 2
-;-------------------------------------
-align 4
-@@:
+        mov     eax, [BPSLine_calc_area+ebx*4]
         xchg    ebp, eax
         add     ebp, eax
         add     ebp, eax
@@ -1813,19 +1768,7 @@ vesa20_drawbackground_stretch:
 ;                       and LFB data (output for our function) [edi]
 ;        mov     eax, [BytesPerScanLine]
 ;        mul     ebx
-        mov     eax, [d_width_calc_area + ebx*4]
-        cmp     [ScreenBPP], byte 32
-        je      .32
-        lea     eax, [eax+eax*2]
-        jmp     @f
-;-------------------------------------
-align 4
-.32:
-        shl     eax, 2
-;-------------------------------------
-align 4
-@@:
-
+        mov     eax, [BPSLine_calc_area+ebx*4]
         xchg    ebp, eax
         add     ebp, eax
         add     ebp, eax