1 | ; Project name : Assembly Library |
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2 | ; Description : Character out function for printing withing menu window. |
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3 | |
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4 | ; |
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5 | ; XTIDE Universal BIOS and Associated Tools |
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6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. |
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7 | ; |
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8 | ; This program is free software; you can redistribute it and/or modify |
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9 | ; it under the terms of the GNU General Public License as published by |
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10 | ; the Free Software Foundation; either version 2 of the License, or |
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11 | ; (at your option) any later version. |
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12 | ; |
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13 | ; This program is distributed in the hope that it will be useful, |
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14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | ; GNU General Public License for more details. |
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17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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18 | ; |
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19 | |
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20 | |
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21 | ; Section containing code |
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22 | SECTION .text |
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23 | |
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24 | ;-------------------------------------------------------------------- |
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25 | ; MenuCharOut_MenuTeletypeOutputWithAutomaticLineChange |
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26 | ; MenuCharOut_MenuTeletypeOutput |
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27 | ; Parameters: |
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28 | ; AL: Character to output |
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29 | ; AH: Attribute to output |
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30 | ; DS: BDA segment (zero) |
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31 | ; ES:DI: Ptr to video memory where to output |
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32 | ; [DISPLAY_CONTEXT.wCharOutParam]: |
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33 | ; Low byte = First column offset (after CR) |
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34 | ; High byte = Last column offset (when using automatic line change) |
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35 | ; Returns: |
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36 | ; DI: Incremented for next character |
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37 | ; Corrupts registers: |
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38 | ; AX, DX |
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39 | ;-------------------------------------------------------------------- |
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40 | ALIGN MENU_JUMP_ALIGN |
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41 | MenuCharOut_MenuTeletypeOutputWithAutomaticLineChange: |
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42 | call CharOutLineSplitter_IsCursorAtTheEndOfTextLine |
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43 | jnc SHORT MenuCharOut_MenuTeletypeOutput |
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44 | cmp al, ' ' |
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45 | jb SHORT ReturnSinceNoNeedToStartLineWithControlCharacter |
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46 | call CharOutLineSplitter_MovePartialWordToNewTextLine |
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47 | ; Fall to MenuCharOut_MenuTextTeletypeOutputWithAttribute |
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48 | |
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49 | ALIGN MENU_JUMP_ALIGN |
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50 | MenuCharOut_MenuTeletypeOutput: |
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51 | cmp al, CR |
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52 | je SHORT PrintCRandAdjustOffsetForStartOfLine |
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53 | jmp DisplayCharOut_TeletypeOutputWithAttribute |
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54 | |
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55 | |
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56 | ;-------------------------------------------------------------------- |
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57 | ; MenuCharOut_PrintLFCRandAdjustOffsetForStartOfLine |
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58 | ; PrintCRandAdjustOffsetForStartOfLine |
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59 | ; Parameters: |
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60 | ; DS: BDA segment (zero) |
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61 | ; ES:DI: Ptr to cursor location |
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62 | ; [DISPLAY_CONTEXT.wCharOutParam]: |
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63 | ; Low byte = First column offset (after CR) |
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64 | ; High byte = Last column offset (when using automatic line change) |
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65 | ; Returns: |
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66 | ; ES:DI: Ptr to beginning of new line |
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67 | ; Corrupts registers: |
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68 | ; AX, DX |
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69 | ;-------------------------------------------------------------------- |
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70 | ALIGN MENU_JUMP_ALIGN |
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71 | MenuCharOut_PrintLFCRandAdjustOffsetForStartOfLine: |
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72 | mov al, LF |
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73 | call DisplayCharOut_BiosTeletypeOutput |
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74 | ; Fall to PrintCRandAdjustOffsetForStartOfLine |
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75 | |
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76 | ALIGN MENU_JUMP_ALIGN |
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77 | PrintCRandAdjustOffsetForStartOfLine: |
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78 | mov al, CR |
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79 | call DisplayCharOut_BiosTeletypeOutput |
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80 | eMOVZX ax, [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.wCharOutParam] |
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81 | add di, ax |
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82 | ReturnSinceNoNeedToStartLineWithControlCharacter: |
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83 | ret |
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