> I've a 3COM ISDN Pro TA, and I'm wondering how to run it as fast as I
> can on my serial ports which are 16550A's.. I assumed that I could use
> Setserial to set this up, which I thought I had done, but I don't seem
> to be able to get anywhere near that.... I'll be experimenting more
> tomorrow. Anyone who's already looked at this I'd appreciate their
The 16550A's themselves can in theory do up to 460kb/s, but the
supporting hardware may not be able to cope. I've happily run 3Com TAs
off a 16550A at 230400bps using the following:
setserial /dev/ttyS0 baud_base 230400
stty 230400 < /dev/ttyS0
On my Debian system, the serial settings are applied at bootup, and are
read from the file "/etc/serial.conf" - in there, there's a line:
/dev/ttyS0 uart 16550A port 0x03f8 irq 4 baud_base 230400 spd_normal
which has the desired effect.
It shouldn't harm anything to at least try this, and if it doesn't work
you can always fall back to 115k2, which is only a little bit short of
dual-channel ISDN's theoretical max. throughput.
Colm Buckley BA BF | NewWorld Commerce, 44 Westland Row, Dublin 2, Ireland
colm at tuatha.org (personal) | colm.buckley at nwcgroup.com (business)
+353 87 2469146 | whois cb3765 | http://www.tuatha.org/~colm/
I said "no" to drugs, but they just wouldn't listen.
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!