identify FTDI chips

Future Technology Devices Int. [FTDI] [PCI vendor ID ]

82C3480 + C&T 82C711 (I/O) write back/through
82C3480 + NatSemi PC87310 (I/O) write back/through

82C3480-AP
82C3480-XM
82C3480-XMVL

FT8U232AM USB1.1 to Parallel converter
FT8U234AM USB1.1 to Parallel converter
FT232BM USB1.1 / USB2.0
FT245BM USB1.1 / USB2.0