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1159 hidnplayr 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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1206 hidnplayr 8 
$Revision: 1206 $
1159 hidnplayr 9 
 
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;
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; Call of videomode driver's functions
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;
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; (Add in System function 21 (and/or 26) as a subfunction 13)
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;
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; Author: Trans
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; Date:  19.07.2003
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;
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; Include in MeOS kernel and compile with FASM
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;
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uglobal
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  old_screen_width  dd ?
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  old_screen_height dd ?
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endg
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     cmp  eax,13                 ; CALL VIDEOMODE DRIVER FUNCTIONS
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     jne  .no_vmode_drv_access
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        pushd   [Screen_Max_X] [Screen_Max_Y]
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	popd	[old_screen_height] [old_screen_width]
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     or   eax,-1                 ; If driver is absent then eax does not change
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     call (VMODE_BASE+0x100)     ; Entry point of video driver
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     mov  [esp+36],eax
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     mov  [esp+24],ebx
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     mov  [esp+32],ecx
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;    mov  [esp+28],edx
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	mov	eax,[old_screen_width]
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	mov	ebx,[old_screen_height]
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        sub     eax,[Screen_Max_X]
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	jnz	@f
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        sub     ebx,[Screen_Max_Y]
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	jz	.resolution_wasnt_changed
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	jmp	.lp1
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    @@: sub     ebx,[Screen_Max_Y]
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  .lp1: sub	[screen_workarea.right],eax
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	sub	[screen_workarea.bottom],ebx
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	call	repos_windows
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        mov     eax, 0
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        mov     ebx, 0
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        mov     ecx, [Screen_Max_X]
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        mov     edx, [Screen_Max_Y]
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	call	calculatescreen
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  .resolution_wasnt_changed:
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     ret
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   .no_vmode_drv_access: