[FADCA] 4 port serial cards

[wchast at utilpart.com]

John H. Green wrote:
> Hi All
>     One thing to remember here is that DOS FPAC deals with irq's and
> address's, not com ports. A com port is a name that an operating uses
> to allow an application to not have to deal with hardware.  DOS Fpac
> works directly with the hardware, thus allowing us to have more ports
> than the bios or operating system allows. We can also use non-standard
> assignments, such as 3f8 address with irq 9.
>     If I remember right, this is not the same with Linux FPAC, one of
> the reasons it is more difficult to set up.
> 73  from windy WY.
> John

Actually you define your TTY's (TTY0 TTY1 etc) about the same way you do
a com port under DOS in the sence that you define the IRQ, address, and
a host of other things. But under *nix com ports like all else are treated
as a file, and as such you have to make sure that all of the proper
permissions have been set up for that file under the application that is
going to talk to it. That is what has bit me in the past, forgetting to
give the permissions so the app can talk to the device or other file.
If I can just remember that part life is good.




Chuck Hast
-------------------------------------------------------------------------
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."


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