Date: Fri, 20 Aug 1999 20:59:28 +0200 From: "Morten Seeberg" <morten@seeberg.dk> To: <questions@freebsd.org> Subject: 4 seriel ports Message-ID: <001401beeb3e$21389a90$1600000a@SOS>
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Hi, AFAIR it is possible on x86 systems (or atleast windows and dos :) ) to have 4 serial ports, which share 2 IRQs?? (I have 2 onboard serieal ports and an xtra I/O card. How is this done on BSD? And which restrictions would I have, in DOS i remember, that it wasnt a good idea to put a mouse and a modem on 2 serial ports, which share IRQ, maybe this problem is solved on newer computers. So that: COM1 IRQ4 COM2 IRQ3 COM3 IRQ4 COM4 IRQ3 This doesnt seem possible with the SIO driver (the man says so). But I hope that it is possible? And where should I look? I tried it with the following parameters: options "COM_MULTIPORT" device sio0 at isa? port "IO_COM1" tty device sio1 at isa? port "IO_COM2" tty device sio2 at isa? port "IO_COM3" tty device sio3 at isa? port "IO_COM4" tty This is the result: DMESG: sio0 at 0x3f8-0x3ff on isa sio0: type 16550A sio1 at 0x2f8-0x2ff on isa sio1: type 16550A sio2 at 0x3e8-0x3ef on isa sio2: type 16450 sio3 at 0x2e8-0x2ef on isa sio3: type 16450 ----- fw.home:/root#cu -l /dev/cuaa2 Connected. atz Aug 20 18:21:29 fw /kernel: sio2: 1 more silo overflow (total 2) Aug 20 18:21:29 fw /kernel: sio2: 1 more silo overflow (total 2) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /\/\orten $eeberg, Systems Consultant @ Merkantildata CMA - Enterprise Solutions #echo 'System Administrators suck :)' > /dev/console To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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