Ïðîãðàììà CALLHMA - ÷àñòü 4

  public _XMM_GlobalEnableA20

  public _XMM_GlobalDisableA20

  public _XMM_EnableA20

  public _XMM_DisableA20

  public _XMM_QueryA20

  public _XMM_QueryLargestFree

  public _XMM_QueryTotalFree

  public _XMM_AllocateExtended

  public _XMM_FreeExtended

  public _XMM_MoveExtended

  public _XMM_LockExtended

  public _XMM_UnLockExtended

  public _XMM_GetHandleLength

  public _XMM_GetHandleInfo

  public _XMM_ReallocateExtended

  public _XMM_RequestUMB

  public _XMM_ReleaseUMB

;**

;.Name         _XMM_Installed

;.Title        Ïîëó÷åíèå àäðåñà óïðàâëÿþùåé ôóíêöèè

;

;.Descr        Ýòà ôóíêöèÿ ïðîâåðÿåò íàëè÷èå äðàéâåðà

;              HIMEM.SYS è â ñëó÷àå åãî ïðèñóñòâèÿ

;              çàïîìèíàåò àäðåñ óïðàâëÿþùåé ôóíêöèè.

;

;.Proto        unsigned XMM_Installed(void);

;

;.Params       Íå èñïîëüçóþòñÿ

;

;.Return       0 - äðàéâåð HIMEM.SYS íå óñòàíîâëåí;

;              1 - äðàéâåð HIMEM.SYS óñòàíîâëåí.

;

;**

_XMM_Installed proc near

          c_begin

          mov  ax, 4300h

          int  2fh

          cmp  al, 80h

          jne  NotInstalled

          mov  ax, 4310h

          int  2fh

          mov  word ptr [XMM_Control], bx

          mov  word ptr [XMM_Control+2], es

          mov  ax,1

          jmp  Installed

NotInstalled:

          mov  ax, 0

Installed:

          c_end

_XMM_Installed endp

;**

;.Name         _XMM_Version

;.Title        Îïðåäåëåíèå âåðñèè äðàéâåðà HIMEM.SYS

;

;.Descr        Ýòà ôóíêöèÿ îïðåäåëÿåò âåðñèþ äðàéâåðà

;              HIMEM.SYS

;

;.Proto        long  XMM_Version(void);

;

;.Params       Íå èñïîëüçóþòñÿ

;

;.Return       Íîìåð âåðñèè â ìëàäøèõ 16 áèòàõ,

;              íîìåð èçìåíåíèé - â ñòàðøèõ 16 áèòàõ

;              âîçâðàùàåìîãî çíà÷åíèÿ

;

;**

_XMM_Version proc near

          push si

          push di

          xor  ah, ah

          call [XMM_Control]

          mov  dx, bx

          pop  di

          pop  si

          ret

Ñîäåðæàíèå  Íàçàä  Âïåðåä

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