Date: Thu, 3 May 2001 17:34:33 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: dchulhan@uwi.tt (Dale Chulhan - Home) Cc: chat@FreeBSD.ORG (chat@FreeBSD.ORG) Subject: Re: Modem Woes Message-ID: <200105031734.KAA20670@usr02.primenet.com> In-Reply-To: <3AF14814.B259D186@uwi.tt> from "Dale Chulhan - Home" at May 03, 2001 07:59:16 AM
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> I'm using a copy of FreeBSD 3.1 and an Aztec modem. > > Alas I have been struggling with my modem over the last couple of days. > > Every time I add the other two serial ports sio2 & sio3 and I look at > the boot .. I see a not found messsage. > > However, I know its a fact that the modem is com4 in windows. > > Is it that I really really have to go do a custom kernel? If so do I > just add the serial ports there or do I have to add pnp support in the > kernel. In FreeBSD, COM ports can not share IRQs. If your modem is COM4: in Windows, it uses IRQ 3, which is already allocated to COM2:. Rejumper or re-software configure your card to use an IRQ other than 3. Note that Windows can "share" IRQs 4 and 3 (COM1: IRQ 4, COM2: IRQ 3, COM3: IRQ 4, COM4: IRQ 3) because it does not open both COM1: and COM3: or COM2: and COM4: simultaneously. FreeBSDs driver is either more stupid (in not supporting exclusive use, or enabling interrupts from the UARTs _only_ when the ports are open), OR it is more intelligent (in permitting all 4 serial ports to be used at the same time, instead of limiting you to two of them) -- it depends on your point of view. PS: FreeBSD _probably_ ought to permit both modes of serial port operation; feel free to submit patches. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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