kolibrios-gitea/kernel/trunk/vmodeint.inc
victor 21e4bc0233 added computing of current #revision for kernel *.inc and *.asm files
git-svn-id: svn://kolibrios.org@425 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-03-21 22:58:33 +00:00

49 lines
1.2 KiB
PHP

$Revision$
;
; 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
jne .no_vmode_drv_access
pushd [ScreenWidth] [ScreenHeight]
popd [old_screen_height] [old_screen_width]
or eax,-1 ; If driver is absent then eax does not change
call 0x760100 ; Entry point of video driver
mov [esp+36],eax
mov [esp+24],ebx
mov [esp+32],ecx
; mov [esp+28],edx
mov eax,[old_screen_width]
mov ebx,[old_screen_height]
sub eax,[ScreenWidth]
jnz @f
sub ebx,[ScreenHeight]
jz .resolution_wasnt_changed
jmp .lp1
@@: sub ebx,[ScreenHeight]
.lp1: sub [screen_workarea.right],eax
sub [screen_workarea.bottom],ebx
call repos_windows
mov eax, 0
mov ebx, 0
mov ecx, [ScreenWidth]
mov edx, [ScreenHeight]
call calculatescreen
.resolution_wasnt_changed:
ret
.no_vmode_drv_access: