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Rev 654 Rev 709
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;;  20.5.2002  Hd status check - VT                                ;;
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;;  20.5.2002  Hd status check - VT                                ;;
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;;  29.6.2002  Improved fat32 verification - VT                    ;;
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;;  29.6.2002  Improved fat32 verification - VT                    ;;
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;;                                                                 ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 654 $
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$Revision: 709 $
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uglobal
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uglobal
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hd_in_cache db ?
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hd_in_cache db ?
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endg
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endg
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- 
 
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reserve_hd_channel:
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; BIOS disk accesses are protected with common mutex hd1_status
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; This must be modified when hd1_status will not be valid!
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        cmp     [hdpos], 0x80
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reserve_hd_channel:
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        jae     .ret
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    cmp   [hdbase], 0x1F0
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    cmp   [hdbase], 0x1F0
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    jne   .IDE_Channel_2
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    jne   .IDE_Channel_2
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.IDE_Channel_1:
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.IDE_Channel_1:
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    cli
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    cli
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        jz      @f
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        jz      @f
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        mov     [hd_in_cache], al
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        mov     [hd_in_cache], al
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        call    clear_hd_cache
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        call    clear_hd_cache
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@@:
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@@:
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	pop     eax
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	pop     eax
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.ret:
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        ret
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        ret
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free_hd_channel:
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; see comment at reserve_hd_channel
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        cmp     [hdpos], 0x80
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free_hd_channel:
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        jae     .ret
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    cmp   [hdbase], 0x1F0
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    cmp   [hdbase], 0x1F0
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    jne   .IDE_Channel_2
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    jne   .IDE_Channel_2
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.IDE_Channel_1:
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.IDE_Channel_1:
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    mov [IDE_Channel_1],0
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    mov [IDE_Channel_1],0
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.ret:
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    ret
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    ret
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.IDE_Channel_2:
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.IDE_Channel_2:
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    mov [IDE_Channel_2],0
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    mov [IDE_Channel_2],0
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    ret
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    ret