RE: /dev/ttyS2 and /dev/ttyS3

From: Philip Maley (zrxjh@)
Date: Fri Feb 04 2000 - 04:56:06 EET

  • Next message: pnp@usyd.edu.au: "RE: /dev/ttyS2 and /dev/ttyS3"

    Hi Brian and others

    I was running a fourport card for a while on vk6bbs but
    it used only a single irq (5). My understanding is that each
    fourport card has a single irq and each port has a unique
    io port address. The other thing is why is there a "^" before
    "fourport"?

    73
    Phil Maley vk6ad

    > -----Original Message-----
    > From: cpmspz.ubhwzzdh@gfz-potsdam.de
    > [mailto:eniq.maimf@kerailya.tunkki.fi]On Behalf Of Brian J. McCarthy
    > Sent: Thursday, 3 February 2000 9:43 PM
    > To: royss.vgetzonys@do-zagorze2.silman.pl; bpbua@rele.tunk.net
    > Subject: RE: /dev/ttyS2 and /dev/ttyS3
    >
    >
    > I've created the following init file:
    >
    > [root@gateway /proc]# cat /etc/rc.d/rc.serial
    > SETSERIAL=/bin/setserial
    > echo "Configuring serial ports...."
    > #
    > ${SETSERIAL} /dev/ttyS0 uart 16550a port 0x3f0 irq 4 ^fourport
    > ${SETSERIAL} /dev/ttyS1 uart 16550a port 0x2f0 irq 3 ^fourport
    > ${SETSERIAL} /dev/ttyS2 uart 16550a port 0x3e0 irq 10 ^fourport
    > ${SETSERIAL} /dev/ttyS3 uart 16550a port 0x2e0 irq 10 ^fourport
    > #
    > echo "done"
    >
    > This produces:
    >
    > [root@gateway /root]# setserial -gav /dev/ttyS?
    > /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f0, IRQ: 4
    > Baud_base: 115200, close_delay: 50, divisor: 0
    > closing_wait: 3000, closing_wait2: infinte
    > Flags: spd_normal skip_test
    >
    > /dev/ttyS1, Line 1, UART: 16550A, Port: 0x02f0, IRQ: 3
    > Baud_base: 115200, close_delay: 50, divisor: 0
    > closing_wait: 3000, closing_wait2: infinte
    > Flags: spd_normal skip_test
    >
    > /dev/ttyS2, Line 2, UART: 16550A, Port: 0x03e0, IRQ: 10
    > Baud_base: 115200, close_delay: 50, divisor: 0
    > closing_wait: 3000, closing_wait2: infinte
    > Flags: spd_normal skip_test
    >
    > /dev/ttyS3, Line 3, UART: 16550A, Port: 0x02e0, IRQ: 10
    > Baud_base: 115200, close_delay: 50, divisor: 0
    > closing_wait: 3000, closing_wait2: infinte
    > Flags: spd_normal
    >
    > But aprsd and other apps still cannot use any ports except ttyS0.
    > Below is
    > the output from ioports.
    >
    > [root@gateway /proc]# cat ioports
    > 0000-001f : dma1
    > 0020-003f : pic1
    > 0040-005f : timer
    > 0060-006f : keyboard
    > 0080-008f : dma page reg
    > 00a0-00bf : pic2
    > 00c0-00df : dma2
    > 00f0-00ff : fpu
    > 01f0-01f7 : ide0
    > 02e0-02e7 : serial(set)
    > 02f0-02f7 : serial(set)
    > 03c0-03df : vga+
    > 03e0-03e7 : serial(set)
    > 03f6-03f6 : ide0
    > ec80-ecff : eth1
    > ef80-ef9f : Intel Speedo3 Ethernet
    > ffa0-ffa7 : ide0
    > ffa8-ffaf : ide1
    > [root@gateway /proc]#
    >
    >
    > Brian McCarthy
    > N7TUQ
    >
    > -----Original Message-----
    > From: zauw@schwaar.com
    > [mailto:duqf@mail.dy.fi]On Behalf Of Thorsten
    > Kranzkowski
    > Sent: Wednesday, February 02, 2000 7:14 PM
    > To: fmm.syziq@anguillanet.com
    > Subject: Re: /dev/ttyS2 and /dev/ttyS3
    >
    >
    > On Wed, Feb 02, 2000 at 06:36:18PM -0700, Brian J. McCarthy wrote:
    > > I have tried to get these serial line added to my Linux machine (RH 6.1
    > with
    > > 2.2.14). I do not understand what the trouble is.
    > >
    > > Output from setserial
    > > =========================================================
    > [...]
    > > /dev/ttyS2: Device or resource busy
    > > /dev/ttyS3: Device or resource busy
    > >
    > >
    > > =========================================================
    > >
    > >
    > > The card I am adding is http://www.siig.com/io/i_o_expander_4s.html.
    > >
    > > I am setting port A to 3E8/IRQ4 and port B to 2E8/IRQ3. The unboard
    > Serial
    > > ports are 3F8/IRQ4 and 2F8/IRQ3. This should be the defaul
    > config. Will
    > > interrupt sharing work accross different cards? What could I
    > do to enable
    >
    > Both PCI: yes
    > onboard ISA: no, never
    > both ISA: yes, with hardware modification
    > one ISA, other PCI: no
    >
    > BUT: I think this has nothing to do with that error-message. Can you post
    > 'cat /proc/ioports' output?
    >
    > > these serial ports ??
    > >
    > >
    > > Brian McCarthy
    > > N7TUQ
    > >
    >
    > Thorsten
    >
    > --
    > | Thorsten Kranzkowski Internet: sjzscnvo.ukum@extrasy.net
    > |
    > | Mobile: ++49 161 7210230 Snail: Niemannsweg 30, 49201 Dissen,
    > Germany |
    > | Ampr: dl8bcu@db0lj.#rpl.deu.eu, jbvvmqat.cveimls@citria.com
    > [44.130.8.19] |
    >
    >
    >

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