Category: <b>DOS extenders</b>
<br>Flags: available only in protected mode<p>
<pre><b>INT 31 - CauseWay - "Info" - GET SYSTEM SELECTORS/FLAGS</b>

	AX = FF00h
Return: AX = selector for flag address space (base 00000000h, limit 4GB)
	BX = selector for current PSP segment (limit 0100h)
	(E)CX = size of DOS transfer buffer (max 64K)
	DX = real-mode segment address of DOS transfer buffer
	ES:(E)SI = protected-mode address of DOS transfer buffer
	EDI = system flags (see <a href=../../it/62/31.html>#03162</a>)
Program: CauseWay is a 386 DOS extender by Michael Devore and John Wildsmith
	  for use with Watcom C++ or assembly language programs
Notes:	the entire transfer buffer can be addressed with a 16-bit offset in
	  protected mode
	CauseWay always maps selector 0040h to the BIOS data segment at
	  real-mode segment 0040h; when not running under a DPMI host, CauseWay
	  also provides selectors A000h, B000h, and B800h mapped to video
	  memory
SeeAlso: AX=FF25h

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