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;;  KolibriOS 16-bit loader,                                    ;;
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;;  KolibriOS 16-bit loader,                                    ;;
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;;                        based on bootcode for MenuetOS        ;;
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;;                        based on bootcode for MenuetOS        ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 713 $
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$Revision: 726 $
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; determine default settings
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; determine default settings
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        mov     [.bSettingsChanged], 0
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        mov     [.bSettingsChanged], 0
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;.preboot_gr_end:
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        mov     di, preboot_device
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; if image in memory is present and [preboot_device] is uninitialized,
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; set it to use this preloaded image
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        cmp     byte [di], 0
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        jnz     .preboot_device_inited
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        cmp     [.loader_block], -1
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        jz      @f
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        les     bx, [.loader_block]
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        test    byte [es:bx+1], 1
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        jz      @f
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        mov     byte [di], 3
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        jmp     .preboot_device_inited
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@@:
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; otherwise, set [preboot_device] to 1 (default value - boot from floppy)
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        mov     byte [di], 1
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;.preboot_gr_end:
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.preboot_device_inited:
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; following 6 lines set variables to 1 if its current value is 0
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; following 6 lines set variables to 1 if its current value is 0
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        cmp     byte[preboot_dma], 1
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        cmp     byte [di+preboot_dma-preboot_device], 1
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        adc     byte[preboot_dma], 0
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        adc     byte [di+preboot_dma-preboot_device], 0
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        cmp     byte[preboot_vrrm], 1
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        cmp     byte [di+preboot_biosdisk-preboot_device], 1
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        adc     byte[preboot_vrrm], 0
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        adc     byte [di+preboot_biosdisk-preboot_device], 0
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        cmp     byte[preboot_device], 1
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        cmp     byte [di+preboot_vrrm-preboot_device], 1
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        adc     byte[preboot_device], 0
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        adc     byte [di+preboot_vrrm-preboot_device], 0
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; notify user
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; notify user
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        _setcursor 5,2
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        _setcursor 5,2
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        call    print
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        call    print
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        mov     al, [preboot_device]
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        mov     al, [preboot_device]
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        and     eax, 7
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        and     eax, 7
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        mov     si, [preboot_device_msgs+eax*2]
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        mov     si, [preboot_device_msgs+eax*2]
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        call    printplain
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        call    printplain
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.show_remarks:
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; show remarks in gray color
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        mov     di, ((21-num_remarks)*80 + 2)*2
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        push    0xB800
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        pop     es
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        mov     cx, num_remarks
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        mov     si, remarks
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.write_remarks:
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        lodsw
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        push    si
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        xchg    ax, si
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        mov     ah, 1*16+7      ; background: blue (1), foreground: gray (7)
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        push    di
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.write_remark:
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        lodsb
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        test    al, al
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        jz      @f
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        stosw
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        jmp     .write_remark
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@@:
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        pop     di
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        pop     si
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        add     di, 80*2
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        loop    .write_remarks
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.wait:
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.wait:
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        _setcursor 25,0         ; out of screen
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        _setcursor 25,0         ; out of screen
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; set timer interrupt handler
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; set timer interrupt handler
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        cli
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        cli
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        push    0
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        push    0
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        mov     [es:8*4], eax
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        mov     [es:8*4], eax
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        mov     [.timer], eax
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        mov     [.timer], eax
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        _setcursor 7,0
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        _setcursor 7,0
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        mov     si, space_msg
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        mov     si, space_msg
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        call    printplain
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        call    printplain
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; clear remarks and restore normal attributes
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        push    es
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        mov     di, ((21-num_remarks)*80 + 2)*2
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        push    0xB800
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        pop     es
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        mov     cx, num_remarks
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        mov     ax, ' ' + (1*16 + 15)*100h
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@@:
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        push    cx
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        mov     cx, 76
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        rep     stosw
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        pop     cx
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        add     di, 4*2
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        loop    @b
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        pop     es
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        pop     ax
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        pop     ax
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; switch on key
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; switch on key
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        cmp     al, 13
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        cmp     al, 13
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        jz      .continue
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        jz      .continue
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        or      al, 20h
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        or      al, 20h
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        cmp     al, 'b'
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        cmp     al, 'b'
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        jz      .change_b
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        jz      .change_b
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        cmp     al, 'c'
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        cmp     al, 'c'
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        jz      .change_c
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        jz      .change_c
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        cmp     al, 'd'
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        cmp     al, 'd'
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        jnz     .wait
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        jnz     .show_remarks
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        _setcursor 15,0
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        _setcursor 15,0
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        mov     si, bdev
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        mov     si, bdev
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        call    print
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        call    print
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        mov     bx, '14'
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        mov     bx, '14'
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        call    getkey
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        call    getkey