[mythtv-users] Serial port PCI card and problem controlling external DirecTV box
Steve Dorsey
info at dorseygraphics.com
Fri Feb 24 17:13:53 UTC 2006
On Feb 24, 2006, at 9:04 AM, Allan Wilson wrote:
> You will probably have to set it manually with the setserial
> command to get it to work. I have an old RH system and to get addon
> serial cards to work I run
>
> lspci -v
>
> to find the card and get it I/O addresses. Then write those I/O
> addresses down and then run
>
> setserial /dev/ttyS? port 0x????
>
> where the first question mark is the serial port you want to assign
> to it and the next four is one of the I/O addresses you found. Then
> run
>
> setserial /dev/ttyS? -v autoconfig
>
> to see if it is the I/O address. You know when you have the right
> one because the uart will be 16650. It is usually the first I/O
> address. If the uart doesn't look right or says unknown then try
> the first setserial with another port until you get it right. When
> you find the right one set the irq with
>
> setserial /dev/ttyS? irq ?
>
> and then check your /proc/tty/driver/serial file to see if it looks
> correct. Once you have done all this you have to make sure that
> your card is initialized again on bootup. Different distros do this
> in different ways. Anyhow hope this helps and if you still have
> problems tell us your distro so I can be more specific.
I'm running KnoppMyth on Debian - kernel 2.6.13.2-chw-3
--------------------S
>
> Allan
>
> On 2/24/06, Nick <knowledgejunkie at gmail.com> wrote:
> On 24/02/06, Steve Dorsey <info at dorseygraphics.com> wrote:
> > Hello
> >
> > I have one on-board serial port on my motherboard. I use it to
> > control my DirecTV DRD435RH Satellite receiver. It works great.
> >
> > I bought a second identical receiver, and it also works great,
> but
> > I had no second serial port, so I bought a PCI card that had one
> port
> > on it. I dropped it in the PC, and it does not work.
> >
> > It is a SYBA IOC-2000 DB9 Serial card with Netmos 9820 Chipset.
> >
> > Can anyone help me get this working? I'm not sure even where to
> > start.
>
> Does the card get detected by the BIOS/kernel, and does it appear
> in lspci?
>
> Are there jumpers on the card to control the serial port config? Does
> it work if you disable the onboard serial port? (could be conflicting)
>
> Nick
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