forked from KolibriOS/kolibrios
48 lines
1.2 KiB
PHP
48 lines
1.2 KiB
PHP
;
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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 [0x0000fe00] [0x0000fe04]
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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 0x760100 ; 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,[0x0000fe00]
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jnz @f
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sub ebx,[0x0000fe04]
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jz .resolution_wasnt_changed
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jmp .lp1
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@@: sub ebx,[0x0000fe04]
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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, [0xfe00]
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mov edx, [0xfe04]
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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:
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