On Thu, Jun 10, 1999 at 12:07:49PM +0000, Gerd wrote:
> Hello Ivo, hello all,
>
> > > > Yes, but - how do you connect e.g. such a cheap RealTek PC NIC to,
> > > > let's say, a TNC2?
> > >
> > > By buying an Ethernet<>RS232 adapter and pluging it on the TNC2.
Does such a beast exist? Price?
> >
> > Sorry if I missed something, but what's the point to connect TNC2 to a
> > high speed Ethernet? Don't you have serial ports available?
> > As far as I know TNC2 supported up to 9600, right? So why bothering with
> > Ethernet.
>
> As you already guessed, it's the usual problem with serial ports
> and their IRQs. If you use more than 2 serial ports you will have to
> purchase not only an expensive multiport serial card but also
> assign a single IRQ to every serial port (if you do not have a special
> card with all its ports having shared one IRQ - very expensive).
> That's why I asked for some experiances with these cards in this
> list, too....
If one only wants to go to 3 or 4 ports, its fairly trivial to cut the
trace going to the ISA bus contact on the card and wire it to a contact
corresponding to a different IRQ. I've done this several times. Many
of the add-on I/O cards have jumpers for IRQs other than 3 and 4.
> Besides this there's also a problem with the various sockets
> necessary for each port. Some older PC cases cause problems
> here. Last not least you then have only ONE cable coming from the
> PC instead of 4 or more of them.
And newer PCs are severely limited in the number of ISA slots.
Are there any PCI SCC cards?
Bob
--
Bob Nielsen Internet: [EMAIL PROTECTED]
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