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/kernel/branches/Kolibri-acpi/vmodeint.inc
0,0 → 1,58
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
$Revision$
 
 
;
; Call of videomode driver's functions
;
; (Add in System function 21 (and/or 26) as a subfunction 13)
;
; Author: Trans
; Date: 19.07.2003
;
; Include in MeOS kernel and compile with FASM
;
 
uglobal
old_screen_width dd ?
old_screen_height dd ?
endg
 
; cmp eax,13 ; CALL VIDEOMODE DRIVER FUNCTIONS
dec ebx
jnz .no_vmode_drv_access
pushd [Screen_Max_X] [Screen_Max_Y]
popd [old_screen_height] [old_screen_width]
or eax,-1 ; If driver is absent then eax does not change
call (VMODE_BASE+0x100) ; Entry point of video driver
mov [esp+36-4],eax
mov [esp+24-4],ebx
mov [esp+32-4],ecx
; mov [esp+28],edx
mov eax,[old_screen_width]
mov ebx,[old_screen_height]
sub eax,[Screen_Max_X]
jnz @f
sub ebx,[Screen_Max_Y]
jz .resolution_wasnt_changed
jmp .lp1
@@: sub ebx,[Screen_Max_Y]
.lp1: sub [screen_workarea.right],eax
sub [screen_workarea.bottom],ebx
 
call repos_windows
xor eax,eax
xor ebx,ebx
mov ecx, [Screen_Max_X]
mov edx, [Screen_Max_Y]
call calculatescreen
 
.resolution_wasnt_changed:
ret
.no_vmode_drv_access:
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