| 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : Boot Menu event handler for menu library callbacks.
|
|---|
| 3 |
|
|---|
| 4 | ; Section containing code
|
|---|
| 5 | SECTION .text
|
|---|
| 6 |
|
|---|
| 7 | struc ITEM_TYPE_REFRESH
|
|---|
| 8 | .HardDisk resb 2
|
|---|
| 9 | .FloppyDrive resb 2
|
|---|
| 10 | endstruc
|
|---|
| 11 |
|
|---|
| 12 |
|
|---|
| 13 | ;--------------------------------------------------------------------
|
|---|
| 14 | ; BootMenuEvent_Handler
|
|---|
| 15 | ; Common parameters for all events:
|
|---|
| 16 | ; BX: Menu event (anything from MENUEVENT struct)
|
|---|
| 17 | ; SS:BP: Menu library handle
|
|---|
| 18 | ; Common return values for all events:
|
|---|
| 19 | ; CF: Set if event processed
|
|---|
| 20 | ; Cleared if event not processed
|
|---|
| 21 | ; Corrupts registers:
|
|---|
| 22 | ; All
|
|---|
| 23 | ;--------------------------------------------------------------------
|
|---|
| 24 | ALIGN JUMP_ALIGN
|
|---|
| 25 | BootMenuEvent_Handler:
|
|---|
| 26 | cmp bx, BYTE MENUEVENT.RefreshItemFromCX ; Above last supported item?
|
|---|
| 27 | ja SHORT .EventNotHandled
|
|---|
| 28 | jmp [cs:bx+.rgfnEventSpecificHandlers]
|
|---|
| 29 | .EventNotHandled:
|
|---|
| 30 | clc
|
|---|
| 31 | ret
|
|---|
| 32 |
|
|---|
| 33 | ALIGN WORD_ALIGN
|
|---|
| 34 | .rgfnEventSpecificHandlers:
|
|---|
| 35 | dw .InitializeMenuinitFromDSSI ; MENUEVENT.InitializeMenuinitFromDSSI
|
|---|
| 36 | dw .EventCompleted ; MENUEVENT.ExitMenu
|
|---|
| 37 | dw .EventNotHandled ; MENUEVENT.IdleProcessing
|
|---|
| 38 | dw .ItemHighlightedFromCX ; MENUEVENT.ItemHighlightedFromCX
|
|---|
| 39 | dw .ItemSelectedFromCX ; MENUEVENT.ItemSelectedFromCX
|
|---|
| 40 | dw .KeyStrokeInAX ; MENUEVENT.KeyStrokeInAX
|
|---|
| 41 | dw BootMenuPrint_TitleStrings ; MENUEVENT.RefreshTitle
|
|---|
| 42 | dw .RefreshInformation ; MENUEVENT.RefreshInformation
|
|---|
| 43 | dw .RefreshItemFromCX ; MENUEVENT.RefreshItemFromCX
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | ; Parameters:
|
|---|
| 47 | ; DS:SI: Ptr to MENUINIT struct to initialize
|
|---|
| 48 | ; Returns:
|
|---|
| 49 | ; DS:SI: Ptr to initialized MENUINIT struct
|
|---|
| 50 | ALIGN JUMP_ALIGN
|
|---|
| 51 | .InitializeMenuinitFromDSSI:
|
|---|
| 52 | push ds
|
|---|
| 53 | call RamVars_GetSegmentToDS
|
|---|
| 54 | call .GetDefaultMenuitemToDX
|
|---|
| 55 | call BootMenu_GetMenuitemCountToAX
|
|---|
| 56 | pop ds
|
|---|
| 57 | mov [si+MENUINIT.wItems], ax
|
|---|
| 58 | mov [si+MENUINIT.wHighlightedItem], dx
|
|---|
| 59 | mov WORD [si+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES
|
|---|
| 60 | mov BYTE [si+MENUINIT.bWidth], BOOT_MENU_WIDTH
|
|---|
| 61 | call BootMenu_GetHeightToAHwithItemCountInAL
|
|---|
| 62 | mov [si+MENUINIT.bHeight], ah
|
|---|
| 63 | stc
|
|---|
| 64 | ret
|
|---|
| 65 |
|
|---|
| 66 | ALIGN JUMP_ALIGN
|
|---|
| 67 | .GetDefaultMenuitemToDX:
|
|---|
| 68 | mov dl, [cs:ROMVARS.bBootDrv] ; Default boot drive
|
|---|
| 69 | call BootMenu_IsDriveInSystem
|
|---|
| 70 | jnc SHORT .DoNotSetDefaultMenuitem
|
|---|
| 71 | call DriveXlate_SetDriveToSwap
|
|---|
| 72 | jmp BootMenu_GetMenuitemToDXforDriveInDL
|
|---|
| 73 | ALIGN JUMP_ALIGN
|
|---|
| 74 | .DoNotSetDefaultMenuitem:
|
|---|
| 75 | xor dx, dx ; Whatever appears first on boot menu
|
|---|
| 76 | ret
|
|---|
| 77 |
|
|---|
| 78 |
|
|---|
| 79 | ; Parameters:
|
|---|
| 80 | ; CX: Index of new highlighted item
|
|---|
| 81 | ; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED
|
|---|
| 82 | ALIGN JUMP_ALIGN
|
|---|
| 83 | .ItemHighlightedFromCX:
|
|---|
| 84 | push cx
|
|---|
| 85 | push dx
|
|---|
| 86 | call RamVars_GetSegmentToDS
|
|---|
| 87 | call DriveXlate_Reset
|
|---|
| 88 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX
|
|---|
| 89 | call DriveXlate_SetDriveToSwap
|
|---|
| 90 | pop ax ; Update previous item
|
|---|
| 91 | CALL_MENU_LIBRARY RefreshItemFromAX
|
|---|
| 92 | pop ax ; Update new item
|
|---|
| 93 | CALL_MENU_LIBRARY RefreshItemFromAX
|
|---|
| 94 | CALL_MENU_LIBRARY RefreshInformation
|
|---|
| 95 | stc
|
|---|
| 96 | ret
|
|---|
| 97 |
|
|---|
| 98 |
|
|---|
| 99 | ; Parameters:
|
|---|
| 100 | ; AL: ASCII character for the key
|
|---|
| 101 | ; AH: Keyboard library scan code for the key
|
|---|
| 102 | ALIGN JUMP_ALIGN
|
|---|
| 103 | .KeyStrokeInAX:
|
|---|
| 104 | cmp ah, ROM_BOOT_HOTKEY_SCANCODE
|
|---|
| 105 | jne SHORT .CheckDriveHotkeys
|
|---|
| 106 | jmp Int19hMenu_RomBoot
|
|---|
| 107 | ALIGN JUMP_ALIGN
|
|---|
| 108 | .CheckDriveHotkeys:
|
|---|
| 109 | call BootMenu_ConvertAsciiHotkeyFromALtoMenuitemInCX
|
|---|
| 110 | cmp cx, [bp+MENUINIT.wItems]
|
|---|
| 111 | jae SHORT .EventCompleted ; Invalid key
|
|---|
| 112 | xchg ax, cx
|
|---|
| 113 | CALL_MENU_LIBRARY HighlightItemFromAX
|
|---|
| 114 | ; Fall to .ItemSelectedFromCX
|
|---|
| 115 |
|
|---|
| 116 |
|
|---|
| 117 | ; Parameters:
|
|---|
| 118 | ; CX: Index of selected item
|
|---|
| 119 | ALIGN JUMP_ALIGN
|
|---|
| 120 | .ItemSelectedFromCX:
|
|---|
| 121 | CALL_MENU_LIBRARY Close
|
|---|
| 122 | .EventCompleted:
|
|---|
| 123 | stc
|
|---|
| 124 | ret
|
|---|
| 125 |
|
|---|
| 126 |
|
|---|
| 127 | ; Parameters:
|
|---|
| 128 | ; CX: Index of item to refresh
|
|---|
| 129 | ; Cursor has been positioned to the beginning of item line
|
|---|
| 130 | ALIGN JUMP_ALIGN
|
|---|
| 131 | .RefreshItemFromCX:
|
|---|
| 132 | mov bx, .rgwItemTypeRefresh
|
|---|
| 133 | jmp SHORT .RefreshItemOrInformationWithJumpTableInCSBX
|
|---|
| 134 |
|
|---|
| 135 |
|
|---|
| 136 | ; Parameters:
|
|---|
| 137 | ; CX: Index of highlighted item
|
|---|
| 138 | ; Cursor has been positioned to the beginning of first line
|
|---|
| 139 | ALIGN JUMP_ALIGN
|
|---|
| 140 | .RefreshInformation:
|
|---|
| 141 | mov bx, .rgwInformationItemTypeRefresh
|
|---|
| 142 | ; Fall to .RefreshItemOrInformationWithJumpTableInCSBX
|
|---|
| 143 |
|
|---|
| 144 | ;--------------------------------------------------------------------
|
|---|
| 145 | ; RefreshItemOrInformationWithJumpTableInCSBX
|
|---|
| 146 | ; Parameters:
|
|---|
| 147 | ; CX: Index of selected menuitem
|
|---|
| 148 | ; CS:BX: Ptr to ITEM_TYPE_REFRESH jump table
|
|---|
| 149 | ; Returns:
|
|---|
| 150 | ; CF: set since event processed
|
|---|
| 151 | ;--------------------------------------------------------------------
|
|---|
| 152 | ALIGN JUMP_ALIGN
|
|---|
| 153 | .RefreshItemOrInformationWithJumpTableInCSBX:
|
|---|
| 154 | cmp cl, NO_ITEM_HIGHLIGHTED
|
|---|
| 155 | je SHORT .EventCompleted
|
|---|
| 156 |
|
|---|
| 157 | call RamVars_GetSegmentToDS
|
|---|
| 158 | call BootMenu_ConvertMenuitemFromCXtoDriveInDX
|
|---|
| 159 | test dl, 80h ; Floppy drive?
|
|---|
| 160 | jz SHORT .DrawFloppyDrive
|
|---|
| 161 | jmp [cs:bx+ITEM_TYPE_REFRESH.HardDisk]
|
|---|
| 162 | ALIGN JUMP_ALIGN
|
|---|
| 163 | .DrawFloppyDrive:
|
|---|
| 164 | jmp [cs:bx+ITEM_TYPE_REFRESH.FloppyDrive]
|
|---|
| 165 |
|
|---|
| 166 | ; Jump tables for .RefreshItemOrInformationWithJumpTableInCSBX
|
|---|
| 167 | ALIGN WORD_ALIGN
|
|---|
| 168 | .rgwItemTypeRefresh:
|
|---|
| 169 | istruc ITEM_TYPE_REFRESH
|
|---|
| 170 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitem
|
|---|
| 171 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitem
|
|---|
| 172 | iend
|
|---|
| 173 | .rgwInformationItemTypeRefresh:
|
|---|
| 174 | istruc ITEM_TYPE_REFRESH
|
|---|
| 175 | at ITEM_TYPE_REFRESH.HardDisk, dw BootMenuPrint_HardDiskMenuitemInformation
|
|---|
| 176 | at ITEM_TYPE_REFRESH.FloppyDrive, dw BootMenuPrint_FloppyMenuitemInformation
|
|---|
| 177 | iend
|
|---|
