[88] | 1 | ; Project name : XTIDE Universal BIOS |
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[3] | 2 | ; Description : Boot Menu event handler for menu library callbacks. |
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| 3 | |
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[376] | 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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[3] | 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 | ; BootMenuEvent_Handler |
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[88] | 25 | ; Common parameters for all events: |
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| 26 | ; BX: Menu event (anything from MENUEVENT struct) |
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| 27 | ; SS:BP: Menu library handle |
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| 28 | ; Common return values for all events: |
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| 29 | ; CF: Set if event processed |
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| 30 | ; Cleared if event not processed |
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[3] | 31 | ; Corrupts registers: |
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[88] | 32 | ; All |
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[3] | 33 | ;-------------------------------------------------------------------- |
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| 34 | BootMenuEvent_Handler: |
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[202] | 35 | |
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[183] | 36 | %ifdef MENUEVENT_INLINE_OFFSETS |
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[202] | 37 | |
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[258] | 38 | add bx, BootMenuEvent_Handler.FirstEvent |
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[183] | 39 | jmp bx |
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[3] | 40 | |
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[258] | 41 | MENUEVENT_InitializeMenuinitFromDSSI equ (BootMenuEvent_Handler.InitializeMenuinitFromDSSI - BootMenuEvent_Handler.FirstEvent) |
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| 42 | MENUEVENT_ExitMenu equ (BootMenuEvent_EventCompleted - BootMenuEvent_Handler.FirstEvent) |
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| 43 | MENUEVENT_ItemHighlightedFromCX equ (BootMenuEvent_Handler.ItemHighlightedFromCX - BootMenuEvent_Handler.FirstEvent) |
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| 44 | MENUEVENT_ItemSelectedFromCX equ (BootMenuEvent_Handler.ItemSelectedFromCX - BootMenuEvent_Handler.FirstEvent) |
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| 45 | MENUEVENT_KeyStrokeInAX equ (BootMenuEvent_Handler.KeyStrokeInAX - BootMenuEvent_Handler.FirstEvent) |
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| 46 | MENUEVENT_RefreshTitle equ (BootMenuPrint_TitleStrings - BootMenuEvent_Handler.FirstEvent) |
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| 47 | MENUEVENT_RefreshInformation equ (BootMenuPrint_RefreshInformation - BootMenuEvent_Handler.FirstEvent) |
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| 48 | MENUEVENT_RefreshItemFromCX equ (BootMenuPrint_RefreshItem - BootMenuEvent_Handler.FirstEvent) |
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[202] | 49 | ; |
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| 50 | ; Note that there is no entry for MENUEVENT_IdleProcessing. If MENUEVENT_IDLEPROCESSING_ENABLE is not %defined, |
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[189] | 51 | ; then the entry point will not be called (saving memory on this end and at the CALL point). |
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| 52 | ; |
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[202] | 53 | |
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[183] | 54 | %else |
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[202] | 55 | |
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[189] | 56 | cmp bx, BYTE MENUEVENT.RefreshItemFromCX ; Above last supported item? |
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| 57 | ja SHORT .EventNotHandled |
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| 58 | jmp [cs:bx+.rgfnEventSpecificHandlers] |
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| 59 | |
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| 60 | .EventNotHandled: |
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| 61 | clc |
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| 62 | ret |
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[202] | 63 | |
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[3] | 64 | ALIGN WORD_ALIGN |
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[88] | 65 | .rgfnEventSpecificHandlers: |
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[241] | 66 | dw .InitializeMenuinitFromDSSI ; MENUEVENT.InitializeMenuinitFromDSSI |
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| 67 | dw BootMenuEvent_EventCompleted ; MENUEVENT.ExitMenu |
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| 68 | dw .EventNotHandled ; MENUEVENT.IdleProcessing |
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| 69 | dw .ItemHighlightedFromCX ; MENUEVENT.ItemHighlightedFromCX |
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| 70 | dw .ItemSelectedFromCX ; MENUEVENT.ItemSelectedFromCX |
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| 71 | dw .KeyStrokeInAX ; MENUEVENT.KeyStrokeInAX |
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| 72 | dw BootMenuPrint_TitleStrings ; MENUEVENT.RefreshTitle |
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| 73 | dw BootMenuPrint_RefreshInformation ; MENUEVENT.RefreshInformation |
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| 74 | dw BootMenuPrint_RefreshItem ; MENUEVENT.RefreshItemFromCX |
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[202] | 75 | |
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[183] | 76 | %endif |
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[3] | 77 | |
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| 78 | |
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[88] | 79 | ; Parameters: |
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| 80 | ; DS:SI: Ptr to MENUINIT struct to initialize |
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| 81 | ; Returns: |
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| 82 | ; DS:SI: Ptr to initialized MENUINIT struct |
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[258] | 83 | .FirstEvent: |
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[88] | 84 | .InitializeMenuinitFromDSSI: |
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| 85 | push ds |
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| 86 | call RamVars_GetSegmentToDS |
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| 87 | call .GetDefaultMenuitemToDX |
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[124] | 88 | call BootMenu_GetMenuitemCountToAX |
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[88] | 89 | pop ds |
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[124] | 90 | mov [si+MENUINIT.wItems], ax |
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[88] | 91 | mov [si+MENUINIT.wHighlightedItem], dx |
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| 92 | mov WORD [si+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES |
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| 93 | mov BYTE [si+MENUINIT.bWidth], BOOT_MENU_WIDTH |
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[124] | 94 | call BootMenu_GetHeightToAHwithItemCountInAL |
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[88] | 95 | mov [si+MENUINIT.bHeight], ah |
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[137] | 96 | mov ax, [cs:ROMVARS.wBootTimeout] |
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[135] | 97 | CALL_MENU_LIBRARY StartSelectionTimeoutWithTicksInAX |
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[88] | 98 | stc |
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[3] | 99 | ret |
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| 100 | |
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[88] | 101 | .GetDefaultMenuitemToDX: |
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| 102 | mov dl, [cs:ROMVARS.bBootDrv] ; Default boot drive |
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| 103 | call BootMenu_IsDriveInSystem |
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| 104 | jnc SHORT .DoNotSetDefaultMenuitem |
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| 105 | call DriveXlate_SetDriveToSwap |
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[124] | 106 | jmp BootMenu_GetMenuitemToDXforDriveInDL |
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[369] | 107 | |
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[88] | 108 | .DoNotSetDefaultMenuitem: |
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| 109 | xor dx, dx ; Whatever appears first on boot menu |
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| 110 | ret |
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[3] | 111 | |
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[88] | 112 | |
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| 113 | ; Parameters: |
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| 114 | ; CX: Index of new highlighted item |
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| 115 | ; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED |
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| 116 | .ItemHighlightedFromCX: |
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| 117 | push cx |
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[241] | 118 | call BootMenu_GetDriveToDXforMenuitemInCX_And_RamVars_GetSegmentToDS |
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[3] | 119 | call DriveXlate_Reset |
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| 120 | call DriveXlate_SetDriveToSwap |
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[140] | 121 | |
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| 122 | xor ax, ax ; Update first floppy drive (for translated drive number) |
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[88] | 123 | CALL_MENU_LIBRARY RefreshItemFromAX |
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[140] | 124 | mov dl, 80h |
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| 125 | call BootMenu_GetMenuitemToDXforDriveInDL |
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| 126 | xchg ax, dx ; Update first hard disk (for translated drive number) |
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[88] | 127 | CALL_MENU_LIBRARY RefreshItemFromAX |
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[140] | 128 | pop ax ; Update new item (for translated drive number) |
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| 129 | CALL_MENU_LIBRARY RefreshItemFromAX |
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[88] | 130 | CALL_MENU_LIBRARY RefreshInformation |
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| 131 | stc |
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[3] | 132 | ret |
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| 133 | |
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| 134 | |
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[88] | 135 | ; Parameters: |
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| 136 | ; AL: ASCII character for the key |
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| 137 | ; AH: Keyboard library scan code for the key |
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| 138 | .KeyStrokeInAX: |
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[92] | 139 | cmp ah, ROM_BOOT_HOTKEY_SCANCODE |
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| 140 | jne SHORT .CheckDriveHotkeys |
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[212] | 141 | ;; NOTE: carry flag will be clear after compare above that resulted in zero |
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| 142 | jmp Int19hMenu_JumpToBootSector_or_RomBoot |
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[369] | 143 | |
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[92] | 144 | .CheckDriveHotkeys: |
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[130] | 145 | call BootMenu_GetMenuitemToAXforAsciiHotkeyInAL |
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| 146 | cmp ax, [bp+MENUINIT.wItems] |
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[241] | 147 | jae SHORT BootMenuEvent_EventCompleted ; Invalid key |
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[248] | 148 | |
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| 149 | ; Highlighting new item resets drive translation and we do not want that. |
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| 150 | ; We must be able to translate both floppy drive and hard drive when using hotkey. |
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| 151 | call RamVars_GetSegmentToDS |
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| 152 | mov dx, [RAMVARS.xlateVars+XLATEVARS.wFDandHDswap] |
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[88] | 153 | CALL_MENU_LIBRARY HighlightItemFromAX |
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[248] | 154 | or [RAMVARS.xlateVars+XLATEVARS.wFDandHDswap], dx |
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[88] | 155 | ; Fall to .ItemSelectedFromCX |
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[3] | 156 | |
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| 157 | |
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[88] | 158 | ; Parameters: |
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| 159 | ; CX: Index of selected item |
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| 160 | .ItemSelectedFromCX: |
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| 161 | CALL_MENU_LIBRARY Close |
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[248] | 162 | |
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[241] | 163 | BootMenuEvent_EventCompleted: |
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[88] | 164 | stc |
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[3] | 165 | ret |
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| 166 | |
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