PCI BIOS question

["Thomas Dippon" <thomasd@hpbidrd.bbn.hp.com>]

Hi,

When I use the PCI BIOS call 0x0C (write a configuration register WORD)
on a motherboard described below, I observe a DWORD config read followed
by a DWORD config write with the low or high 16 bits replaced by the
data I specify.
The problem is, that reading and writing back the "other half" of the
32 bit register might have an unexpected side effect. (E.g. writing to
the command register clears the status register!)

Any opinions on this?

Thanks,
Thomas


Here's the technical data of the system:
Motherboard: ASUSTeK P/I-P55TVP4
CPU:         Pentium 133 MHz
Chipset:     Intel Triton VX  (SB82437VX + SB82371SB)
BIOS:        Award Modular BIOS v4.51PG  #401A0-0101


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| Thomas Dippon                   | E-Mail:  thomas_dippon@bbn.hp.com     
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