/Configurator/Src/Main.asm

; File name		:	main.asm

; Project name	:	XTIDE Univeral BIOS Configurator

; Created date	:	16.4.2010

; Last update	:	30.4.2010

; Author		:	Tomi Tilli

; Description	:	Program start and exit.			



; Include .inc files

%include "emulate.inc"			; Emulation library. Must be first!

%include "BiosData.inc"			; For BIOS Data Area variables

%include "Variables.inc"		; Global variables for this program

%include "MenuPage.inc"			; Menu page and item structs

%include "RomVars.inc"			; XTIDE Universal BIOS ROMVARS





; 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 "math.asm"

%include "print.asm"

%include "string.asm"

%include "keys.asm"

%include "file.asm"

%include "menu.asm"



; Include sources for this program

%include "Strings.asm"				; For program strings

%include "MenuEvent.asm"			; For handling menu library events

%include "MenuEventHotkey.asm"		; For handling menu hotkeys

%include "MenuPage.asm"				; For accessing MENUPAGE structs

%include "MenuPageItem.asm"			; For accessing MENUPAGEITEM structs

%include "MenuPageItemFormat.asm"	; For printing menuitem names

%include "FormatTitle.asm"			; For printing menu title

%include "BiosFile.asm"				; For loading and saving BIOS file

%include "EEPROM.asm"				; For handling EEPROM contents

%include "Flash.asm"				; For flashing EEPROM



%include "MainMenu.asm"				; For main menu

%include "ConfigurationMenu.asm"	; For XTIDE Universal BIOS configuration menu

%include "BootLoaderValueMenu.asm"	; For selecting boot loader type

%include "IdeControllerMenu.asm"	; For configuring IDEVARS

%include "BusTypeValueMenu.asm"		; For selecting bus type

%include "DrvParamsMenu.asm"		; For configuring DRVPARAMS

%include "BootMenuSettingsMenu.asm"	; For configuring boot menu

%include "FlashMenu.asm"			; For flash settings

%include "SdpCommandValueMenu.asm"	; For selecting SDP command





;--------------------------------------------------------------------

; Program start

;--------------------------------------------------------------------

ALIGN JUMP_ALIGN

Main_Start:

	call	MenuDraw_ClrScr		; Clear screen

	call	Main_InitializeVariables



	; Create main menu

	mov		si, g_MenuPageMain	; DS:SI points to MENUPAGE for main menu

	call	MainMenu_SetMenuitemVisibility

	call	Main_EnterMenu		; Enter menu

	call	MenuDraw_ClrScr		; Clear screen



	; Exit to DOS

	mov 	ax, 4C00h			; Exit to DOS

	int 	21h





;--------------------------------------------------------------------

; Initializes global variables used in this program.

;

; Main_InitializeVariables

;	Parameters:

;		Nothing

;	Returns:

;		Nothing

;	Corrupts registers:

;		AX, BX, CX, DX, SI, DI, ES

;--------------------------------------------------------------------

ALIGN JUMP_ALIGN

Main_InitializeVariables:

	; Zero all global variables

	mov		di, g_cfgVars		; ES:DI points to global variables

	mov		cx, (CFGVARS_size+ROMVARS_size)/2	; Size in words

	xor		ax, ax				; To store zero

	cld							; STOSW to increment DI

	rep stosw					; Zero all variables



	; Find Xtide Universal BIOS segment

	mov		dx, 0D000h			; XTIDE default segment

	call	EEPROM_FindXtideUniversalBiosROM

	jnc		SHORT .InitializeVariables

	mov		dx, es				; XTIDE segment to DX



ALIGN JUMP_ALIGN

.InitializeVariables:

	mov		WORD [g_cfgVars+CFGVARS.wFlags], FLG_CFGVARS_CHECKSUM

	mov		WORD [g_cfgVars+CFGVARS.wEepromSegment], dx

	mov		BYTE [g_cfgVars+CFGVARS.bPageSize], 1

	mov		BYTE [g_cfgVars+CFGVARS.bSdpCommand], CMD_SDP_ENABLE

	ret





;--------------------------------------------------------------------

; Enters main or submenu.

;

; Main_EnterMenu

;	Parameters:

;		DS:SI:	Ptr to MENUPAGE (also menu user far pointer for MENUVARS.user)

;	Returns:

;		CX:		Index of last pointed Menuitem (not necessary selected with ENTER)

;				FFFFh if cancelled with ESC

;	Corrupts registers:

;		AX, BX, CX, DX, SI, DI

;--------------------------------------------------------------------

ALIGN JUMP_ALIGN

Main_EnterMenu:

	call	MenuPage_GetNumberOfVisibleItems

	mov		cl, al								; Number of visible menuitems to CL

	mov		ax, (CNT_SCRN_ROW<<8) | WIDTH_MENU

	mov		bx, (CNT_INFO_LINES<<8) | CNT_TITLE_LINES

	mov		ch, [cs:g_cfgVars+CFGVARS.wFlags]	; Load program flags to CH

	and		ch, FLG_MNU_HIDENFO					; Clear all but info flag

	xor		dx, dx								; No selection timeout

	mov		di, MenuEvent_Handler				; CS:DI points to menu event handler

	inc		BYTE [cs:g_cfgVars+CFGVARS.bMenuCnt]

	call	Menu_Enter

	dec		BYTE [cs:g_cfgVars+CFGVARS.bMenuCnt]

	jz		SHORT .Return



	; Update info visibility for previous menu where to resume

	test	BYTE [cs:g_cfgVars+CFGVARS.wFlags], FLG_CFGVARS_HIDEINFO

	jnz		SHORT .HideInfo

	call	Menu_ShowInfo

	ret

ALIGN JUMP_ALIGN

.HideInfo:

	call	Menu_HideInfo

.Return:

	ret





; Section containing uninitialized data

SECTION .bss



ALIGN WORD_ALIGN	; All global variables

g_cfgVars:		resb	CFGVARS_size