1 2references: 3http://www.beyondlogic.org/serial/serial.htm 4http://jamesthornton.com/freebsd/articles/serial-uart/ 5http://dugeem.net/david/work/freebsd-serial.html 6http://dugeem.net/david/work/etc/sio.c 7http://byterunner.com/16550.html 8https://en.wikibooks.org/wiki/Serial_Programming/8250_UART_Programming#Software_Identification_of_the_UART 9 10Moschip: 11http://lxr.linux.no/linux+v2.6.28.7/drivers/parport/parport_serial.c#L108 12http://lxr.linux.no/linux+v2.6.28.7/drivers/pci/quirks.c#L1462 13 14Oxford Semi OXuPCI952: 15http://mail-index.netbsd.org/netbsd-bugs/2013/09/04/msg034083.html 16 17FreeBSD's PUC data: 18http://fxr.watson.org/fxr/source/dev/pci/pucdata.c?v=NETBSD 19 20if you can understand it: 21http://lxr.linux.no/linux+v2.6.28.7/drivers/serial/ 22 23