Here's a chunk of 'lspci -v' from an IA-1:
00:01.0 PCI bridge: VIA Technologies, Inc. VT8501 (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: 40000000-410fffff
I at least need the ethernet chipset...
pciconf -l might work, but it seems to give the information only in hex.