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'[EE]: PCI-serial'
2007\08\31@043214 by Graham North

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Hi everyone,



I'm looking into making a PCI card to go into a PC to do some simple
switching. The problem I have is that I would like to talk to the PIC on
the board via RS232. It seems mad running a cable from a comm port to
the back of my PCI card to allow communication. Has anyone ever used any
IC's that create a comm. Port from the PCI bus? There must be some as
there are plenty of PCI card to serial port cards you can buy.



Thanks,

Graham North




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2007\08\31@163656 by Robert Rolf

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Graham North wrote:

{Quote hidden}

So just buy a PCI serial card and attach you PIC project to the PCB with
brackets. There is usually a LOT of extra and unused board area for that.

You might also be able to tap into the serial bus some MB chip sets have for
managing power and temperature monitors. It's a variation of I2C.
If it's a one off project, why not?

Robert


2007\08\31@181641 by peter green

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Graham North wrote:
> Hi everyone,
>
>  
>
> I'm looking into making a PCI card to go into a PC to do some simple
> switching. The problem I have is that I would like to talk to the PIC on
> the board via RS232. It seems mad running a cable from a comm port to
> the back of my PCI card to allow communication. Has anyone ever used any
> IC's that create a comm. Port from the PCI bus? There must be some as
> there are plenty of PCI card to serial port cards you can buy.
>  
You could always buy a card and take a look what chips they use but IIRC
PCI has some weired trace routing requirements though and those fingers
really need to be gold plated for reliability.

Someone suggested using a pci serial card with some spare room on it and
doing a piggyback. Another possibility if the motherboard has it would
be to use a comport header on the board which would at least avoid the
external cable. You could also use USB in that way (modern motherboards
are more likely to have internal headers for USB ports than for com ports)

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