| 1 | ; Project name : Assembly Library
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| 2 | ; Description : Character out function for printing within 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, 2011-2013 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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