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Rev | Author | Line No. | Line |
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129 | mikedld | 1 | ; |
2 | ; Call of videomode driver's functions |
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3 | ; |
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4 | ; (Add in System function 21 (and/or 26) as a subfunction 13) |
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5 | ; |
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6 | ; Author: Trans |
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7 | ; Date: 19.07.2003 |
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8 | ; |
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9 | ; Include in MeOS kernel and compile with FASM |
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10 | ; |
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11 | |||
12 | uglobal |
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13 | old_screen_width dd ? |
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14 | old_screen_height dd ? |
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15 | endg |
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16 | |||
17 | cmp eax,13 ; CALL VIDEOMODE DRIVER FUNCTIONS |
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18 | jne .no_vmode_drv_access |
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19 | pushd [0x0000fe00] [0x0000fe04] |
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20 | popd [old_screen_height] [old_screen_width] |
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21 | or eax,-1 ; If driver is absent then eax does not change |
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22 | call 0x760100 ; Entry point of video driver |
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23 | mov [esp+36],eax |
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24 | mov [esp+24],ebx |
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25 | mov [esp+32],ecx |
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26 | ; mov [esp+28],edx |
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27 | mov eax,[old_screen_width] |
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28 | mov ebx,[old_screen_height] |
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29 | sub eax,[0x0000fe00] |
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30 | jnz @f |
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31 | sub ebx,[0x0000fe04] |
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32 | jz .resolution_wasnt_changed |
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33 | jmp .lp1 |
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34 | @@: sub ebx,[0x0000fe04] |
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35 | .lp1: sub [screen_workarea.right],eax |
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36 | sub [screen_workarea.bottom],ebx |
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37 | |||
38 | call repos_windows |
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39 | mov eax, 0 |
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40 | mov ebx, 0 |
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41 | mov ecx, [0xfe00] |
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42 | mov edx, [0xfe04] |
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43 | call [calculatescreen] |
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44 | |||
45 | .resolution_wasnt_changed: |
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46 | ret |
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47 | .no_vmode_drv_access: |