PCI Dual Port Serial Card

Crist J. Clark cristjc at comcast.net
Thu Jan 8 10:39:43 PST 2004

I've got a StarTech.com two port PCI card, 16C950, which is seems to
be a rebranded Oxford Semiconductor OX16PCI954 PCI UART, listed as
supported in the release notes for 5.1. The system in question is

I've compiled the puc(4) driver into the kernel, and the dmesg(8)
looks like so,

  sio0: <Oxford Semiconductor PCI Dual Port Serial> port 0xdf40-0xdf5f,0xdf60-0xdf67 mem 0xfeacd000-0feacdfff,0xfeace000,0xfeacefff irq 3 at device 12.0 on pci2
  sio0: moving to sio1
  sio1: type 16550A

One of the ports in the card works fine as sio1, as does the built-in
serial port, sio0, but the second port in the card doesn't show up

What do I need to do to get the system to find the second port on the
Crist J. Clark                     |     cjclark at alum.mit.edu
                                   |     cjclark at jhu.edu
http://people.freebsd.org/~cjc/    |     cjc at freebsd.org

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