Re: Disable FIFO on UART

2013-05-06 Thread Lowell Gilbert
Miguel Barbosa Gonçalves m...@mbg.pt writes: Back in FreeBSD 7 there was a flag to disable the FIFO on the sio [...] Now with FreeBSD 8 which uses the UART device driver there's no option for that. I am looking to reduce the jitter I am getting on the serial port when connecting a GPS to

Disable FIFO on UART

2013-05-05 Thread Miguel Barbosa Gonçalves
Hi! Back in FreeBSD 7 there was a flag to disable the FIFO on the sio device driver. From http://www.freebsd.org/cgi/man.cgi?query=sioapropos=0sektion=0manpath=FreeBSD+7.4-stablearch=defaultformat=html: Meaning of flags: 0x1 shared IRQs 0x2 disable FIFO 0x4 no AST/4 compatible