source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Menus/BootMenu/BootMenuPrint.asm@ 507

; Project name  :   XTIDE Universal BIOS
; Description   :   Functions for printing boot menu strings.

;
; XTIDE Universal BIOS and Associated Tools
; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 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
;

; Section containing code
SECTION .text

;--------------------------------------------------------------------
; BootMenuPrint_RefreshItem
;
;   Parameters:
;       CX:     Index of highlighted item
;       DS:     RAMVARS segment
;   Returns:
;       Nothing
;   Corrupts registers:
;       Does not matter
;--------------------------------------------------------------------
BootMenuPrint_RefreshItem:
    push    bp
    mov     bp, sp

    call    BootMenu_GetDriveToDXforMenuitemInCX
    mov     si, g_szRomBootDash                     ; Standard "Rom Boot" but with a "-" at the front
    mov     al, 20h                                 ; The space between "Rom" and "Boot"
    jnc     .ROMBoot                                ; display "Rom Boot" option for last entry

    call    FindDPT_ForDriveNumberInDL
    jc      .notOurs

    call    DriveDetectInfo_ConvertDPTtoBX
    mov     si, g_szDriveNumBOOTNFO                 ; special g_szDriveNum that prints from BDA
    jmp     .go

.notOurs:
    mov     si,g_szDriveNum
    mov     bx,g_szForeignHD                        ; assume a hard disk for the moment

    test    dl, dl
    js      .go
    mov     bl,((g_szFloppyDrv)-$$ & 0xff)          ; and revisit the earlier assumption...

.go:
    mov     ax, dx                                  ; preserve DL for the floppy drive letter addition
    call    DriveXlate_ToOrBack

    test    dl, 0f0h                                ; if there is a character in the upper nibble
    jnz     .noSpace
    dec     si                                      ; backup a character to a leading space
.noSpace:

    push    dx                                      ; translated drive number
    push    bx                                      ; sub string
    add     al, 'A'                                 ; floppy drive letter (we always push this although
                                                    ; the hard disks don't ever use it, but it does no harm)
.ROMBoot:       
    push    ax                                      

    jmp     SHORT BootMenuPrint_RefreshInformation.FormatRelay

;--------------------------------------------------------------------
; Prints Boot Menu title strings.
;
; BootMenuPrint_TitleStrings
;   Parameters:
;       Nothing
;   Returns:
;       CF:     Set since menu event handled
;   Corrupts registers:
;       AX, SI, DI
;--------------------------------------------------------------------
BootMenuPrint_TitleStrings:
    xor     di,di                       ; Null character will be eaten
    mov     si, g_szBootMenuTitle
    jmp     DetectPrint_RomFoundAtSegment.BootMenuEntry


;--------------------------------------------------------------------
; BootMenuPrint_RefreshInformation
;   Parameters:
;       CX:     Index of highlighted item
;       DS:     RAMVARS segment
;   Returns:
;       CF:     Set since menu event was handled successfully
;   Corrupts registers:
;       Does not matter
;--------------------------------------------------------------------
BootMenuPrint_RefreshInformation:
    CALL_MENU_LIBRARY ClearInformationArea

    call    BootMenu_GetDriveToDXforMenuitemInCX
    jnc     BootMenuEvent_Completed                     ; nothing to display if "Rom Boot" option

    push    bp
    mov     bp, sp

    mov     si, g_szCapacity                            ; Setup print string now, carries through to print call

    call    FindDPT_ForDriveNumberInDL

    inc     dl                                          ; are we a hard disk?
    dec     dl                                          ; inc/dec will set SF, without modifying CF or DL
    js      .HardDiskRefreshInformation

    jnc     .ours                                       ; Based on CF from FindDPT_ForDriveNumberInDL above
    call    FloppyDrive_GetType                         ; Get Floppy Drive type to BX
    jmp     .around
.ours:
    call    AH8h_GetDriveParameters
.around:

    mov     ax, g_szFddSizeOr                           ; .PrintXTFloppyType
    test    bl, bl                                      ; Two possibilities? (FLOPPY_TYPE_525_OR_35_DD)
    jz      SHORT .PushAXAndOutput

    mov     al, (g_szFddUnknown - $$) & 0xff            ; .PrintUnknownFloppyType
    cmp     bl, FLOPPY_TYPE_35_ED
    ja      SHORT .PushAXAndOutput

    ; Fall to .PrintKnownFloppyType

;--------------------------------------------------------------------
; .PrintKnownFloppyType
;   Parameters:
;       BX:     Floppy drive type
;   Returns:
;       CF:     Set since menu event was handled successfully
;   Corrupts registers:
;       AX, BX, SI, DI
;
; Floppy Drive Types:
;
;   0  Handled above
;   1  FLOPPY_TYPE_525_DD          5 1/4   360K
;   2  FLOPPY_TYPE_525_HD          5 1/4   1.2M
;   3  FLOPPY_TYPE_35_DD           3 1/2   720K
;   4  FLOPPY_TYPE_35_HD           3 1/2   1.44M
;   5  3.5" ED on some BIOSes      3 1/2   2.88M
;   6  FLOPPY_TYPE_35_ED           3 1/2   2.88M
;   >6 Unknown, handled above
;
;--------------------------------------------------------------------
.PrintKnownFloppyType:
    mov     al, (g_szFddSize - $$) & 0xff
    push    ax

    mov     al, (g_szFddThreeHalf - $$) & 0xff
    cmp     bl, FLOPPY_TYPE_525_HD
    ja      .ThreeHalf
    mov     al, (g_szFddFiveQuarter - $$) & 0xff
.ThreeHalf:
    push    ax                                          ; "5 1/4" or "3 1/2"

    xor     bh, bh
    mov     al,FloppyTypes.rgbCapacityMultiplier
    mul     BYTE [cs:bx+FloppyTypes.rgbCapacity - 1]    ; -1 since 0 is handled above and not in the table

.PushAXAndOutput:
    push    ax

.FormatRelay:
    jmp     DetectPrint_FormatCSSIfromParamsInSSBP


;--------------------------------------------------------------------
; Prints Hard Disk Menuitem information strings.
;
; BootMenuPrint_HardDiskMenuitemInformation
;   Parameters:
;       DS:     RAMVARS segment
;   Returns:
;       CF:     Set since menu event was handled successfully
;   Corrupts registers:
;       BX, CX, DX, SI, DI, ES
;--------------------------------------------------------------------
.HardDiskRefreshInformation:
    jc      .HardDiskMenuitemInfoForForeignDrive        ; Based on CF from FindDPT_ForDriveNumberInDL (way) above

.HardDiskMenuitemInfoForOurDrive:
    ePUSH_T ax, g_szInformation                         ; Add substring for our hard disk information
    call    GetTotalSectorCount
    jmp     .ConvertSectorCountInBXDXAXtoSizeAndPushForFormat

.HardDiskMenuitemInfoForForeignDrive:
    call    DriveXlate_ToOrBack
    call    AH15h_GetSectorCountFromForeignDriveToDXAX

.ConvertSectorCountInBXDXAXtoSizeAndPushForFormat:
    ePUSH_T cx, g_szCapacityNum     ; Push format substring
    call    Size_ConvertSectorCountInBXDXAXtoKiB
    mov     cx, BYTE_MULTIPLES.kiB
    call    Size_GetSizeToAXAndCharToDLfromBXDXAXwithMagnitudeInCX
    push    ax                      ; Size in magnitude
    push    cx                      ; Tenths
    push    dx                      ; Magnitude character

    test    di, di                  ; Zero if foreign drive
    jz      SHORT BootMenuPrint_RefreshInformation.FormatRelay

%include "BootMenuPrintCfg.asm"     ; Inline of code to fill out remainder of information string
    jmp     DetectPrint_FormatCSSIfromParamsInSSBP


FloppyTypes:
.rgbCapacityMultiplier equ 120      ; Multiplier to reduce word sized values to byte size
.rgbCapacity:
    db      360   / FloppyTypes.rgbCapacityMultiplier    ;  type 1
    db      1200  / FloppyTypes.rgbCapacityMultiplier    ;  type 2
    db      720   / FloppyTypes.rgbCapacityMultiplier    ;  type 3
    db      1440  / FloppyTypes.rgbCapacityMultiplier    ;  type 4
    db      2880  / FloppyTypes.rgbCapacityMultiplier    ;  type 5
    db      2880  / FloppyTypes.rgbCapacityMultiplier    ;  type 6


;--------------------------------------------------------------------
; GetTotalSectorCount
;   Parameters:
;       DS:DI:      DPT Pointer
;   Returns:
;       BX:DX:AX:   48-bit sector count
;   Corrupts registers:
;       CX
;--------------------------------------------------------------------
%ifdef MODULE_EBIOS
GetTotalSectorCount     EQU     AccessDPT_GetLbaSectorCountToBXDXAX
%else
GetTotalSectorCount     EQU     AH15h_GetSectorCountToBXDXAX
%endif