source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Main.asm @ 593

; Project name  :   XTIDE Universal BIOS Configurator v2
; Description   :   Program start and exit.

;
; XTIDE Universal BIOS and Associated Tools
; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
; GNU General Public License for more details.
; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
;

; Include .inc files

%define INCLUDE_MENU_DIALOGS
%define INCLUDE_SERIAL_LIBRARY

%include "AssemblyLibrary.inc"  ; Assembly Library. Must be included first!
%include "RomVars.inc"          ; XTIDE Universal BIOS variables
%include "IdeRegisters.inc"     ; Needed for port and device autodetection
%include "JRIDE_ISA.inc"        ; For JR-IDE/ISA default segment
%include "ADP50L.inc"           ; For ADP50L default segment
%include "XTCF.inc"             ; For XT-CF modes

%include "Version.inc"
%include "MenuCfg.inc"
%include "MenuStructs.inc"
%include "Variables.inc"


; Section containing code
SECTION .text


; Program first instruction.
ORG 100h                        ; Code starts at offset 100h (DOS .COM)
Start:
    jmp     Main_Start

; Include library sources
%include "AssemblyLibrary.asm"

; Include sources for this program
%include "AutoConfigure.asm"
%include "BiosFile.asm"
%include "Buffers.asm"
%include "Dialogs.asm"
%include "EEPROM.asm"
%include "Flash.asm"
%include "IdeAutodetect.asm"
%include "MenuEvents.asm"
%include "Menuitem.asm"
%include "MenuitemPrint.asm"
%include "Menupage.asm"
%include "Strings.asm"

%include "BootMenuSettingsMenu.asm"
%include "ConfigurationMenu.asm"
%include "FlashMenu.asm"
%include "IdeControllerMenu.asm"
%include "MainMenu.asm"
%include "MasterSlaveMenu.asm"



;--------------------------------------------------------------------
; Program start
;--------------------------------------------------------------------
ALIGN JUMP_ALIGN
Main_Start:
    mov     ah, GET_DOS_VERSION
    int     DOS_INTERRUPT_21h
    cmp     al, 2
    jae     SHORT .DosVersionIsOK
    mov     dx, g_s$NotMinimumDosVersion
    mov     ah, WRITE_STRING_TO_STANDARD_OUTPUT
    int     DOS_INTERRUPT_21h
    ret
.DosVersionIsOK:
    mov     [bDosVersionMajor], al                  ; bDosVersionMajor must be initialized by the application (library code depends on it)
    cmp     al, 5
    jb      SHORT .DoNotInstallInt2FhHandler
    ; Since we are installing our Int2Fh handler we must also hook interrupt 23h to ensure a clean exit on ctrl-c/ctrl-break
    call    HookInterrupt23h
    call    HookInterrupt2Fh
.DoNotInstallInt2FhHandler:

    mov     ax, SCREEN_BACKGROUND_CHARACTER_AND_ATTRIBUTE
    call    InitializeScreenWithBackgroundCharAndAttrInAX

    call    Main_InitializeCfgVars
    call    MenuEvents_DisplayMenu
    mov     ax, DOS_BACKGROUND_CHARACTER_AND_ATTRIBUTE
    call    InitializeScreenWithBackgroundCharAndAttrInAX

    call    UnhookInterrupt2Fh

    ; Exit to DOS
    mov     ax, TERMINATE_WITH_RETURN_CODE<<8       ; Errorlevel 0 in AL
    int     DOS_INTERRUPT_21h


;--------------------------------------------------------------------
; InitializeScreenWithBackgroundCharAndAttrInAX
;   Parameters:
;       AL:     Background character
;       AH:     Background attribute
;   Returns:
;       Nothing
;   Corrupts registers:
;       AX, DX, DI
;--------------------------------------------------------------------
ALIGN JUMP_ALIGN
InitializeScreenWithBackgroundCharAndAttrInAX:
    xchg    dx, ax
    CALL_DISPLAY_LIBRARY InitializeDisplayContext   ; Reset cursor etc
    xchg    ax, dx
    JMP_DISPLAY_LIBRARY ClearScreenWithCharInALandAttrInAH


;--------------------------------------------------------------------
; Main_InitializeCfgVars
;   Parameters:
;       DS:     Segment to CFGVARS
;   Returns:
;       Nothing
;   Corrupts registers:
;       AX, BX, CX, DI
;--------------------------------------------------------------------
ALIGN JUMP_ALIGN
Main_InitializeCfgVars:
    push    es

    call    Buffers_Clear
    call    EEPROM_FindXtideUniversalBiosROMtoESDI
    jc      SHORT .InitializationCompleted
    mov     [CFGVARS.wEepromSegment], es
.InitializationCompleted:
    pop     es
    ret


; Section containing initialized data
SECTION .data

ALIGN WORD_ALIGN
g_cfgVars:
istruc CFGVARS
    at  CFGVARS.pMenupage,          dw  g_MenupageForMainMenu
    at  CFGVARS.wFlags,             dw  DEFAULT_CFGVARS_FLAGS
    at  CFGVARS.wEepromSegment,     dw  0
    at  CFGVARS.bEepromType,        db  DEFAULT_EEPROM_TYPE
    at  CFGVARS.bEepromPage,        db  DEFAULT_PAGE_SIZE
    at  CFGVARS.bSdpCommand,        db  DEFAULT_SDP_COMMAND
iend


; Section containing uninitialized data
SECTION .bss

bDosVersionMajor:   resb    1