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<TITLE>Int 1A/AX=B10Ah/SF=1004h
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Int 1A/AX=B10Ah/SF=1004h - PCI BIOS v2.0c+ - READ CONFIGURATION DWORD (VLSI devices) -
AX = B10Ah subfn 1004h
BH = bus number
BL = device/function number (bits 7-3 device, bits 2-0 function)
DI = register number (0000h-00FFh) (see #00878)
Return: CF clear if successful
ECX = dword read
CF set on error
AH = status (00h,87h) (see #00729)
EAX, EBX, ECX, and EDX may be modified
all other flags (except IF) may be modified
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<h2>Int 1A/AX=B10Ah/SF=1004h
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<h3><font color=#C00040>PCI BIOS v2.0c+ - READ CONFIGURATION DWORD (VLSI devices)</font></h3>
<PRE>
AX = B10Ah subfn 1004h
BH = bus number
BL = device/function number (bits 7-3 device, bits 2-0 function)
DI = register number (0000h-00FFh) <a href="rb-2377.htm#Table878" tppabs="http://www.ctyme.com/intr/rb-2377.htm#Table878">(see #00878)</a><br>
<p><b>Return:</b><br>CF clear if successful
ECX = dword read
CF set on error
AH = status (00h,87h) <a href="rb-2371.htm#Table729" tppabs="http://www.ctyme.com/intr/rb-2371.htm#Table729">(see #00729)</a>
EAX, EBX, ECX, and EDX may be modified
all other flags (except IF) may be modified
</PRE>
<p><b>Notes:</b>
This function may require up to 1024 byte of stack; it will not enable
interrupts if they were disabled before making the call.
The meanings of BL and BH on entry were exchanged between the initial
drafts of the specification and final implementation
<p><b>See Also:</b>
<a href="rb-2377.htm" tppabs="http://www.ctyme.com/intr/rb-2377.htm">AX=B10Ah</a> - <a href="rb-2387.htm" tppabs="http://www.ctyme.com/intr/rb-2387.htm">AX=B10Ah/SF=8086h</a>
<PRE>
<p>
Format of PCI Configuration Data for VLSI VL82C591 Host/PCI bridge:
<a name=table919></a>
Offset Size Description (Table 00919)
00h 64 BYTEs header <a href="rb-2377.htm#Table878" tppabs="http://www.ctyme.com/intr/rb-2377.htm#Table878">(see #00878)</a>
(vendor ID 1004h, device ID 0005h)
40h BYTE bus number
41h BYTE subordinate bus number
42h WORD reserved
44h 4 DWORDs reserved
54h 2 BYTEs device-specific configuration registers
56h WORD reserved
58h 2 BYTEs device-specific configuration registers
5Ah WORD reserved
5Ch 5 BYTEs device-specific configuration registers.
...
FFh BYTE device-specific configuration register
</PRE>
<p><b>See Also:</b>
#00878 - #00732 - #00920
<PRE>
<p>
Format of PCI Configuration data for VLSI VL82C593 PCI/ISA bridge:
<a name=table920></a>
Offset Size Description (Table 00920)
00h 64 BYTEs header <a href="rb-2377.htm#Table878" tppabs="http://www.ctyme.com/intr/rb-2377.htm#Table878">(see #00878)</a>
(vendor ID 1004, device ID 0006h)
40h 4 DWORDs reserved
50h 11 BYTEs device-specific configuration registers
5Bh BYTE reserved
5Ch 25 BYTEs device-specific configuration registers
75h 138 BYTEs reserved
FFh BYTE device-specific configuration register
</PRE>
<p><b>See Also:</b>
#00878 - #00919
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Expansion Bus Bios</a>
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