[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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| 4 | ; Section containing code |
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| 5 | SECTION .text |
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| 6 | |
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[88] | 7 | struc ITEM_TYPE_REFRESH |
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| 8 | .HardDisk resb 2 |
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| 9 | .FloppyDrive resb 2 |
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| 10 | endstruc |
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| 11 | |
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| 12 | |
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[3] | 13 | ;-------------------------------------------------------------------- |
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| 14 | ; BootMenuEvent_Handler |
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[88] | 15 | ; Common parameters for all events: |
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| 16 | ; BX: Menu event (anything from MENUEVENT struct) |
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| 17 | ; SS:BP: Menu library handle |
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| 18 | ; Common return values for all events: |
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| 19 | ; CF: Set if event processed |
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| 20 | ; Cleared if event not processed |
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[3] | 21 | ; Corrupts registers: |
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[88] | 22 | ; All |
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[3] | 23 | ;-------------------------------------------------------------------- |
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| 24 | ALIGN JUMP_ALIGN |
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| 25 | BootMenuEvent_Handler: |
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[88] | 26 | cmp bx, MENUEVENT.RefreshItemFromCX ; Above last supported item? |
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| 27 | ja SHORT .EventNotHandled |
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| 28 | jmp [bx+.rgfnEventSpecificHandlers] |
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| 29 | .EventNotHandled: |
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| 30 | clc |
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| 31 | ret |
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[3] | 32 | |
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| 33 | ALIGN WORD_ALIGN |
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[88] | 34 | .rgfnEventSpecificHandlers: |
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[124] | 35 | dw .InitializeMenuinitFromDSSI ; MENUEVENT.InitializeMenuinitFromDSSI |
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| 36 | dw .EventCompleted ; MENUEVENT.ExitMenu |
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| 37 | dw .EventNotHandled ; MENUEVENT.IdleProcessing |
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| 38 | dw .ItemHighlightedFromCX ; MENUEVENT.ItemHighlightedFromCX |
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| 39 | dw .ItemSelectedFromCX ; MENUEVENT.ItemSelectedFromCX |
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| 40 | dw .KeyStrokeInAX ; MENUEVENT.KeyStrokeInAX |
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| 41 | dw BootMenuPrint_TitleStrings ; MENUEVENT.RefreshTitle |
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| 42 | dw .RefreshInformation ; MENUEVENT.RefreshInformation |
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| 43 | dw .RefreshItemFromCX ; MENUEVENT.RefreshItemFromCX |
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[3] | 44 | |
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| 45 | |
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[88] | 46 | ; Parameters: |
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| 47 | ; DS:SI: Ptr to MENUINIT struct to initialize |
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| 48 | ; Returns: |
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| 49 | ; DS:SI: Ptr to initialized MENUINIT struct |
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[3] | 50 | ALIGN JUMP_ALIGN |
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[88] | 51 | .InitializeMenuinitFromDSSI: |
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| 52 | push ds |
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| 53 | call RamVars_GetSegmentToDS |
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| 54 | call .GetDefaultMenuitemToDX |
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[124] | 55 | call BootMenu_GetMenuitemCountToAX |
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[88] | 56 | pop ds |
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[124] | 57 | mov [si+MENUINIT.wItems], ax |
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[88] | 58 | mov [si+MENUINIT.wHighlightedItem], dx |
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| 59 | mov WORD [si+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES |
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| 60 | mov BYTE [si+MENUINIT.bWidth], BOOT_MENU_WIDTH |
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[124] | 61 | call BootMenu_GetHeightToAHwithItemCountInAL |
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[88] | 62 | mov [si+MENUINIT.bHeight], ah |
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| 63 | stc |
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[3] | 64 | ret |
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| 65 | |
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[88] | 66 | ALIGN JUMP_ALIGN |
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| 67 | .GetDefaultMenuitemToDX: |
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| 68 | mov dl, [cs:ROMVARS.bBootDrv] ; Default boot drive |
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| 69 | call BootMenu_IsDriveInSystem |
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| 70 | jnc SHORT .DoNotSetDefaultMenuitem |
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| 71 | call DriveXlate_SetDriveToSwap |
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[124] | 72 | jmp BootMenu_GetMenuitemToDXforDriveInDL |
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[88] | 73 | ALIGN JUMP_ALIGN |
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| 74 | .DoNotSetDefaultMenuitem: |
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| 75 | xor dx, dx ; Whatever appears first on boot menu |
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| 76 | ret |
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[3] | 77 | |
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[88] | 78 | |
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| 79 | ; Parameters: |
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| 80 | ; CX: Index of new highlighted item |
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| 81 | ; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED |
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[3] | 82 | ALIGN JUMP_ALIGN |
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[88] | 83 | .ItemHighlightedFromCX: |
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| 84 | push cx |
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| 85 | push dx |
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[3] | 86 | call RamVars_GetSegmentToDS |
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| 87 | call DriveXlate_Reset |
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[92] | 88 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX |
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[3] | 89 | call DriveXlate_SetDriveToSwap |
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[88] | 90 | pop ax ; Update previous item |
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| 91 | CALL_MENU_LIBRARY RefreshItemFromAX |
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| 92 | pop ax ; Update new item |
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| 93 | CALL_MENU_LIBRARY RefreshItemFromAX |
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| 94 | CALL_MENU_LIBRARY RefreshInformation |
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| 95 | stc |
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[3] | 96 | ret |
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| 97 | |
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| 98 | |
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[88] | 99 | ; Parameters: |
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| 100 | ; AL: ASCII character for the key |
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| 101 | ; AH: Keyboard library scan code for the key |
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[3] | 102 | ALIGN JUMP_ALIGN |
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[88] | 103 | .KeyStrokeInAX: |
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[92] | 104 | cmp ah, ROM_BOOT_HOTKEY_SCANCODE |
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| 105 | jne SHORT .CheckDriveHotkeys |
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[95] | 106 | jmp Int19hMenu_RomBoot |
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[92] | 107 | ALIGN JUMP_ALIGN |
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| 108 | .CheckDriveHotkeys: |
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| 109 | call BootMenu_ConvertAsciiHotkeyFromALtoMenuitemInCX |
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[88] | 110 | cmp cx, [bp+MENUINIT.wItems] |
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[92] | 111 | jae SHORT .EventCompleted ; Invalid key |
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[88] | 112 | xchg ax, cx |
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| 113 | CALL_MENU_LIBRARY HighlightItemFromAX |
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| 114 | ; Fall to .ItemSelectedFromCX |
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[3] | 115 | |
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| 116 | |
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[88] | 117 | ; Parameters: |
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| 118 | ; CX: Index of selected item |
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[3] | 119 | ALIGN JUMP_ALIGN |
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[88] | 120 | .ItemSelectedFromCX: |
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| 121 | CALL_MENU_LIBRARY Close |
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| 122 | .EventCompleted: |
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| 123 | stc |
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[3] | 124 | ret |
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| 125 | |
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| 126 | |
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[88] | 127 | ; Parameters: |
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| 128 | ; CX: Index of item to refresh |
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| 129 | ; Cursor has been positioned to the beginning of item line |
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[3] | 130 | ALIGN JUMP_ALIGN |
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[88] | 131 | .RefreshItemFromCX: |
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| 132 | mov bx, .rgwItemTypeRefresh |
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| 133 | jmp SHORT .RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 134 | |
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[88] | 135 | |
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| 136 | ; Parameters: |
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| 137 | ; CX: Index of highlighted item |
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| 138 | ; Cursor has been positioned to the beginning of first line |
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[3] | 139 | ALIGN JUMP_ALIGN |
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[88] | 140 | .RefreshInformation: |
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| 141 | mov bx, .rgwInformationItemTypeRefresh |
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| 142 | ; Fall to .RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 143 | |
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| 144 | ;-------------------------------------------------------------------- |
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[88] | 145 | ; RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 146 | ; Parameters: |
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| 147 | ; CX: Index of selected menuitem |
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[88] | 148 | ; CS:BX: Ptr to ITEM_TYPE_REFRESH jump table |
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[3] | 149 | ; Returns: |
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[88] | 150 | ; CF: set since event processed |
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[3] | 151 | ;-------------------------------------------------------------------- |
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| 152 | ALIGN JUMP_ALIGN |
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[88] | 153 | .RefreshItemOrInformationWithJumpTableInCSBX: |
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| 154 | cmp cl, NO_ITEM_HIGHLIGHTED |
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| 155 | je SHORT .EventCompleted |
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| 156 | |
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[3] | 157 | call RamVars_GetSegmentToDS |
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[92] | 158 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX |
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[3] | 159 | test dl, 80h ; Floppy drive? |
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[88] | 160 | jz SHORT .DrawFloppyDrive |
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| 161 | jmp [cs:bx+ITEM_TYPE_REFRESH.HardDisk] |
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[3] | 162 | ALIGN JUMP_ALIGN |
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[88] | 163 | .DrawFloppyDrive: |
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| 164 | jmp [cs:bx+ITEM_TYPE_REFRESH.FloppyDrive] |
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[3] | 165 | |
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[88] | 166 | ; Jump tables for .RefreshItemOrInformationWithJumpTableInCSBX |
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| 167 | ALIGN WORD_ALIGN |
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| 168 | .rgwItemTypeRefresh: |
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| 169 | istruc ITEM_TYPE_REFRESH |
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| 170 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitem |
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| 171 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitem |
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| 172 | iend |
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| 173 | .rgwInformationItemTypeRefresh: |
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| 174 | istruc ITEM_TYPE_REFRESH |
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| 175 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitemInformation |
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| 176 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitemInformation |
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| 177 | iend |
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