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oldlinux-files/docs/interrupts/int-html/rb-5839.htm
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<TITLE>Int 31/AX=0401h
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Int 31/AX=0401h - DPMI 1.0+ - GET DPMI CAPABILITIES -
AX = 0401h
ES:(E)DI - 128-byte buffer for host description (see #03153)
Return: CF clear if successful
AX = capabilities (see #03154)
CX = reserved (00h)
DX = reserved (00h)
buffer filled
CF set on error (DPMI 0.9 only)
SeeAlso: AX=0400h
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<h2>Int 31/AX=0401h
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<h3><font color=#C00040>DPMI 1.0+ - GET DPMI CAPABILITIES</font></h3>
<PRE>
AX = 0401h
ES:(E)DI -> 128-byte buffer for host description <a href="rb-5839.htm#Table3153" tppabs="http://www.ctyme.com/intr/rb-5839.htm#Table3153">(see #03153)</a><br>
<p><b>Return:</b><br>CF clear if successful
AX = capabilities <a href="rb-5839.htm#Table3154" tppabs="http://www.ctyme.com/intr/rb-5839.htm#Table3154">(see #03154)</a>
CX = reserved (00h)
DX = reserved (00h)
buffer filled
CF set on error (DPMI 0.9 only)
</PRE>
<p><b>See Also:</b>
<a href="rb-5838.htm" tppabs="http://www.ctyme.com/intr/rb-5838.htm">AX=0400h</a>
<PRE>
<p>
Format of DPMI host description:
<a name=table3153></a>
Offset Size Description (Table 03153)
00h BYTE host major version number
01h BYTE host minor version number
02h 126 BYTEs ASCIZ host vendor name
<p>
Bitfields for DPMI capabilities:
<a name=table3154></a>
Bit(s) Description (Table 03154)
0 paged accessed/dirty supported (see AX=0506h,AX=0507h)
1 exceptions restartability supported
2 device mapping supported (see AX=0508h)
3 conventional memory mapping supported (see AX=0509h)
4 demand zero-fill supported
5 write-protect client capability supported
6 write-protect host capability supported
7-15 reserved
</PRE>
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