Re: How is 8-bit character support enabled for the TTY driver

Jeff V. Merkey (jmerkey@timpanogas.com)
Tue, 07 Dec 1999 15:14:23 -0700


Guest section DW wrote:
>
> On Tue, Dec 07, 1999 at 12:48:34PM -0700, Jeff V. Merkey wrote:
> >
>
> So, I understand you are saying that the Linux kernel works fine
> and your tools fail. That may be. But then why post to linux-kernel?
>
> By default all is well. You might check stty (cs8 bit), or the
> eightBitInput/eightBitOutput resources for xterm, or the settings
> for your shell or whatever settings are relevant for the environment
> where you are trying to do your stuff. Some versions of flex require
> the -8 flag. telnet might require a -8 flag. Etc. There is a HOWTO.
>

The bash shell ignores the CS8 parm as well as the ~ISTRIP parm when you
call tcsetattr. In fact, it does absolutely nothing and the terminal
still outputs 7 bit characters. Someone at Caldera told me there was a
TTY ioctl I needed to call to turn it on in "true" 8 bit mode, but I
think this may have been incorrect. If it's a driver issue it belongs
here, so I asked -- it that ok? Alan Cox actually has already cleared
this up, so you were a little late to the party, but thanks anyhow.

Jeff

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