Subject: Re: Megaherz Ethernet/Modem combo cards
To: Jason Thorpe <>
From: None <>
List: current-users
Date: 09/30/1999 13:22:22
> Okay, well, if this is true, then we have a problem with current
> ethernet/modem combos, as we seem to be establishing an interrupt
> (and allocating an IRQ!) for each function on the card.
Hm, maybe that explains why my 3Com 3c562 33.6 Modem/10Mbps Ethernet
card likes to work as ep0 _OR_ com0 and hanging the laptop if I try to
use com0 when ep0 is up. 'ifconfig ep0 down' and then tip'ing to com0 is

here's the relevant output from dmesg:

ep0 at pcmcia0 function 0 port 0x400-0x40f: 3Com 3c562 33.6 Modem/10Mbps Ethernet 
ep0: address 00:60:97:fe:75:dd, 8KB byte-wide FIFO, 5:3 Rx:Tx split
ep0: 10baseT, 10base5, 10base2 (default 10baseT)
com0 at pcmcia0 function 1 port 0x410-0x417: serial device
com0: ns16550a, working fifo

and then some lines later:

pcmcia0: card irq 5
stray interrupt 5
pcmcia0: card irq 5
stray interrupt 7
pcmcia2: card irq 7

one 'card irq 5' comes from ifconfig ep0.... the other from 'ttyflags -a'
called in /etc/rc. 'card irq 7' is from ifconfig ep1...

maybe that's of any use here?


ps.: if there's someone needed to help testing patches or so (I really
     would like to use the 3c562 as a router from home!) I'll be a
     happy guinea pig ;-)