From what I have gathered about some NICs:
Linksys LNE100TX rev 4, 5 - ADMtek AN985 Centaur chip
Linksys NC100 rev 2, 2.1 - ADMtek Centaur chip
Linksys NC200 - ADMtek AN981 Comet chip
Netgear FA311/312 - NatSemi DP83815
Netgear FA310TX
rev C1 - DEC 21140
rev D1 - Lite-On NGMC169B
rev D2 - Lite-On LC82C168C/169C
D-Link DFE 530TX+ - Realtek 8139
D-Link DFE-500TX, 570TX - DEC (Digital) 'Tulip'
SMC EZ Card SMC1244TX - Realtek 8139
add. info:
SCYLD