[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 | .SpecialFunction resb 2 |
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| 11 | endstruc |
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| 12 | |
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| 13 | |
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[3] | 14 | ;-------------------------------------------------------------------- |
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| 15 | ; BootMenuEvent_Handler |
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[88] | 16 | ; Common parameters for all events: |
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| 17 | ; BX: Menu event (anything from MENUEVENT struct) |
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| 18 | ; SS:BP: Menu library handle |
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| 19 | ; Common return values for all events: |
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| 20 | ; CF: Set if event processed |
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| 21 | ; Cleared if event not processed |
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[3] | 22 | ; Corrupts registers: |
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[88] | 23 | ; All |
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[3] | 24 | ;-------------------------------------------------------------------- |
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| 25 | ALIGN JUMP_ALIGN |
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| 26 | BootMenuEvent_Handler: |
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[88] | 27 | cmp bx, MENUEVENT.RefreshItemFromCX ; Above last supported item? |
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| 28 | ja SHORT .EventNotHandled |
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| 29 | jmp [bx+.rgfnEventSpecificHandlers] |
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| 30 | .EventNotHandled: |
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| 31 | .IdleProcessing: |
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| 32 | clc |
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| 33 | ret |
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[3] | 34 | |
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| 35 | ALIGN WORD_ALIGN |
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[88] | 36 | .rgfnEventSpecificHandlers: |
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| 37 | dw .InitializeMenuinitFromDSSI |
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| 38 | dw .EventCompleted |
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| 39 | dw .IdleProcessing |
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| 40 | dw .ItemHighlightedFromCX |
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| 41 | dw .ItemSelectedFromCX |
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| 42 | dw .KeyStrokeInAX |
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| 43 | dw BootMenuPrint_TitleStrings |
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| 44 | dw .RefreshInformation |
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| 45 | dw .RefreshItemFromCX |
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[3] | 46 | |
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| 47 | |
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[88] | 48 | ; Parameters: |
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| 49 | ; DS:SI: Ptr to MENUINIT struct to initialize |
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| 50 | ; Returns: |
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| 51 | ; DS:SI: Ptr to initialized MENUINIT struct |
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[3] | 52 | ALIGN JUMP_ALIGN |
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[88] | 53 | .InitializeMenuinitFromDSSI: |
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| 54 | push ds |
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| 55 | call RamVars_GetSegmentToDS |
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| 56 | call .GetDefaultMenuitemToDX |
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| 57 | call BootMenu_GetMenuitemCountToCX |
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| 58 | pop ds |
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| 59 | mov [si+MENUINIT.wItems], cx |
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| 60 | mov [si+MENUINIT.wHighlightedItem], dx |
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| 61 | mov WORD [si+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES |
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| 62 | mov BYTE [si+MENUINIT.bWidth], BOOT_MENU_WIDTH |
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| 63 | call BootMenu_GetHeightToAHwithItemCountInCL |
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| 64 | mov [si+MENUINIT.bHeight], ah |
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| 65 | stc |
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[3] | 66 | ret |
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| 67 | |
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[88] | 68 | ALIGN JUMP_ALIGN |
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| 69 | .GetDefaultMenuitemToDX: |
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| 70 | mov dl, [cs:ROMVARS.bBootDrv] ; Default boot drive |
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| 71 | call BootMenu_IsDriveInSystem |
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| 72 | jnc SHORT .DoNotSetDefaultMenuitem |
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| 73 | call DriveXlate_SetDriveToSwap |
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| 74 | call BootMenu_ConvertDriveToMenuitem |
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| 75 | mov dx, cx |
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| 76 | ret |
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| 77 | ALIGN JUMP_ALIGN |
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| 78 | .DoNotSetDefaultMenuitem: |
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| 79 | xor dx, dx ; Whatever appears first on boot menu |
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| 80 | ret |
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[3] | 81 | |
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[88] | 82 | |
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| 83 | ; Parameters: |
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| 84 | ; CX: Index of new highlighted item |
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| 85 | ; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED |
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[3] | 86 | ALIGN JUMP_ALIGN |
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[88] | 87 | .ItemHighlightedFromCX: |
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| 88 | push cx |
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| 89 | push dx |
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[3] | 90 | call RamVars_GetSegmentToDS |
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| 91 | call DriveXlate_Reset |
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[92] | 92 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX |
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[3] | 93 | call DriveXlate_SetDriveToSwap |
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[88] | 94 | pop ax ; Update previous item |
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| 95 | CALL_MENU_LIBRARY RefreshItemFromAX |
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| 96 | pop ax ; Update new item |
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| 97 | CALL_MENU_LIBRARY RefreshItemFromAX |
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| 98 | CALL_MENU_LIBRARY RefreshInformation |
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| 99 | stc |
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[3] | 100 | ret |
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| 101 | |
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| 102 | |
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[88] | 103 | ; Parameters: |
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| 104 | ; AL: ASCII character for the key |
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| 105 | ; AH: Keyboard library scan code for the key |
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[3] | 106 | ALIGN JUMP_ALIGN |
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[88] | 107 | .KeyStrokeInAX: |
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[92] | 108 | cmp ah, ROM_BOOT_HOTKEY_SCANCODE |
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| 109 | jne SHORT .CheckDriveHotkeys |
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| 110 | int INTV_BOOT_FAILURE ; ROM Boot, never returns |
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| 111 | ALIGN JUMP_ALIGN |
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| 112 | .CheckDriveHotkeys: |
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| 113 | call BootMenu_ConvertAsciiHotkeyFromALtoMenuitemInCX |
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[88] | 114 | cmp cx, [bp+MENUINIT.wItems] |
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[92] | 115 | jae SHORT .EventCompleted ; Invalid key |
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[88] | 116 | xchg ax, cx |
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| 117 | CALL_MENU_LIBRARY HighlightItemFromAX |
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| 118 | ; Fall to .ItemSelectedFromCX |
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[3] | 119 | |
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| 120 | |
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[88] | 121 | ; Parameters: |
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| 122 | ; CX: Index of selected item |
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[3] | 123 | ALIGN JUMP_ALIGN |
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[88] | 124 | .ItemSelectedFromCX: |
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| 125 | CALL_MENU_LIBRARY Close |
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| 126 | .EventCompleted: |
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| 127 | stc |
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[3] | 128 | ret |
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| 129 | |
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| 130 | |
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[88] | 131 | ; Parameters: |
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| 132 | ; CX: Index of item to refresh |
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| 133 | ; Cursor has been positioned to the beginning of item line |
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[3] | 134 | ALIGN JUMP_ALIGN |
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[88] | 135 | .RefreshItemFromCX: |
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| 136 | mov bx, .rgwItemTypeRefresh |
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| 137 | jmp SHORT .RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 138 | |
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[88] | 139 | |
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| 140 | ; Parameters: |
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| 141 | ; CX: Index of highlighted item |
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| 142 | ; Cursor has been positioned to the beginning of first line |
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[3] | 143 | ALIGN JUMP_ALIGN |
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[88] | 144 | .RefreshInformation: |
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| 145 | mov bx, .rgwInformationItemTypeRefresh |
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| 146 | ; Fall to .RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 147 | |
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| 148 | ;-------------------------------------------------------------------- |
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[88] | 149 | ; RefreshItemOrInformationWithJumpTableInCSBX |
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[3] | 150 | ; Parameters: |
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| 151 | ; CX: Index of selected menuitem |
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[88] | 152 | ; CS:BX: Ptr to ITEM_TYPE_REFRESH jump table |
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[3] | 153 | ; Returns: |
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[88] | 154 | ; CF: set since event processed |
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[3] | 155 | ;-------------------------------------------------------------------- |
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| 156 | ALIGN JUMP_ALIGN |
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[88] | 157 | .RefreshItemOrInformationWithJumpTableInCSBX: |
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| 158 | cmp cl, NO_ITEM_HIGHLIGHTED |
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| 159 | je SHORT .EventCompleted |
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| 160 | |
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[3] | 161 | call RamVars_GetSegmentToDS |
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[92] | 162 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX |
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[3] | 163 | test dl, 80h ; Floppy drive? |
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[88] | 164 | jz SHORT .DrawFloppyDrive |
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| 165 | jmp [cs:bx+ITEM_TYPE_REFRESH.HardDisk] |
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[3] | 166 | ALIGN JUMP_ALIGN |
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[88] | 167 | .DrawFloppyDrive: |
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| 168 | jmp [cs:bx+ITEM_TYPE_REFRESH.FloppyDrive] |
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[3] | 169 | |
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[88] | 170 | ; Jump tables for .RefreshItemOrInformationWithJumpTableInCSBX |
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| 171 | ALIGN WORD_ALIGN |
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| 172 | .rgwItemTypeRefresh: |
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| 173 | istruc ITEM_TYPE_REFRESH |
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| 174 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitem |
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| 175 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitem |
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| 176 | iend |
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| 177 | .rgwInformationItemTypeRefresh: |
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| 178 | istruc ITEM_TYPE_REFRESH |
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| 179 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitemInformation |
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| 180 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitemInformation |
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| 181 | iend |
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