1 | ; Project name : Assembly Library
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2 | ; Description : Displays drive dialog.
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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 | ; Section containing code
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21 | SECTION .text
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22 |
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23 | ;--------------------------------------------------------------------
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24 | ; DialogDrive_GetDriveWithIoInDSSI
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25 | ; Parameters:
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26 | ; DS:SI: Ptr to DRIVE_DIALOG_IO
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27 | ; SS:BP: Ptr to parent MENU
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28 | ; Returns:
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29 | ; Nothing
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30 | ; Corrupts registers:
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31 | ; AX, BX, CX, DX, SI, DI
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32 | ;--------------------------------------------------------------------
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33 | ALIGN JUMP_ALIGN
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34 | DialogDrive_GetDriveWithIoInDSSI:
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35 | mov bx, DriveEventHandler
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36 | mov BYTE [si+DRIVE_DIALOG_IO.bUserCancellation], TRUE
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37 | jmp Dialog_DisplayWithDialogInputInDSSIandHandlerInBX
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38 |
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39 |
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40 | ;--------------------------------------------------------------------
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41 | ; DriveEventHandler
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42 | ; Common parameters for all events:
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43 | ; BX: Menu event (anything from MENUEVENT struct)
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44 | ; SS:BP: Ptr to DIALOG
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45 | ; Common return values for all events:
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46 | ; CF: Set if event processed
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47 | ; Cleared if event not processed
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48 | ; Corrupts registers:
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49 | ; All
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50 | ;--------------------------------------------------------------------
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51 | ALIGN JUMP_ALIGN
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52 | DriveEventHandler:
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53 | jmp [cs:bx+.rgfnEventHandlers]
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54 |
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55 |
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56 | ALIGN JUMP_ALIGN
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57 | .InitializeMenuinitFromDSSI:
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58 | xor ax, ax
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59 | call Dialog_EventInitializeMenuinitFromDSSIforSingleItemWithHighlightedItemInAX
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60 | call Drive_GetFlagsForAvailableDrivesToDXAX
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61 | mov [bp+MENU.dwUserData], ax
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62 | mov [bp+MENU.dwUserData+2], dx
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63 |
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64 | call Bit_GetSetCountToCXfromDXAX
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65 | mov [bp+MENUINIT.wItems], cx
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66 |
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67 | dec cx ; Items initialized to one. Ignore it.
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68 | add cl, [bp+MENUINIT.bHeight]
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69 | CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH
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70 | MIN_U cl, ah
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71 | mov [bp+MENUINIT.bHeight], cl
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72 | ret
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73 |
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74 |
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75 | ALIGN JUMP_ALIGN
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76 | .ItemSelectedFromCX:
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77 | call ConvertDriveLetterToBLfromItemIndexInCX
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78 | lds si, [bp+DIALOG.fpDialogIO]
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79 | mov BYTE [si+DRIVE_DIALOG_IO.bUserCancellation], FALSE
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80 | mov [si+DRIVE_DIALOG_IO.cReturnDriveLetter], bl
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81 | sub bl, 'A'
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82 | mov [si+DRIVE_DIALOG_IO.bReturnDriveNumber], bl
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83 | jmp MenuInit_CloseMenuWindow
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84 |
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85 |
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86 | ALIGN JUMP_ALIGN
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87 | .RefreshItemFromCX:
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88 | push bp
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89 |
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90 | call ConvertDriveLetterToBLfromItemIndexInCX
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91 | mov bp, sp
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92 | push bx
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93 | mov si, g_szDriveFormat
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94 | CALL_DISPLAY_LIBRARY FormatNullTerminatedStringFromCSSI
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95 |
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96 | pop bp
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97 | stc
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98 | ret
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99 |
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100 |
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101 | .rgfnEventHandlers:
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102 | istruc MENUEVENT
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103 | at MENUEVENT.InitializeMenuinitFromDSSI, dw .InitializeMenuinitFromDSSI
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104 | at MENUEVENT.ExitMenu, dw Dialog_EventExitMenu
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105 | at MENUEVENT.IdleProcessing, dw Dialog_EventNotHandled
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106 | at MENUEVENT.ItemHighlightedFromCX, dw Dialog_EventNotHandled
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107 | at MENUEVENT.ItemSelectedFromCX, dw .ItemSelectedFromCX
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108 | at MENUEVENT.KeyStrokeInAX, dw Dialog_EventNotHandled
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109 | at MENUEVENT.RefreshTitle, dw Dialog_EventRefreshTitle
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110 | at MENUEVENT.RefreshInformation, dw Dialog_EventRefreshInformation
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111 | at MENUEVENT.RefreshItemFromCX, dw .RefreshItemFromCX
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112 | iend
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113 |
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114 |
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115 | ;--------------------------------------------------------------------
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116 | ; ConvertDriveLetterToBLfromItemIndexInCX
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117 | ; Parameters:
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118 | ; CX: Item index
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119 | ; SS:BP: Ptr to DIALOG
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120 | ; Returns:
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121 | ; BL: Drive letter
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122 | ; Corrupts registers:
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123 | ; AX, CX, DX
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124 | ;--------------------------------------------------------------------
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125 | ALIGN JUMP_ALIGN
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126 | ConvertDriveLetterToBLfromItemIndexInCX:
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127 | inc cx ; Index to count
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128 | mov bl, 'A'-1
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129 | mov ax, [bp+MENU.dwUserData]
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130 | mov dx, [bp+MENU.dwUserData+2]
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131 | ALIGN JUMP_ALIGN
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132 | .CheckNextBit:
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133 | inc bx ; Increment drive letter
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134 | shr dx, 1
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135 | rcr ax, 1
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136 | jnc SHORT .CheckNextBit
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137 | loop .CheckNextBit
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138 | ret
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