Date: Wed, 23 Apr 1997 20:21:59 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: dmm125@bellatlantic.net (Donn Miller) Cc: freebsd-bugs@freebsd.org, questions@freebsd.org Subject: Re: com3 - sio2: "not found", but there Message-ID: <19970423202159.VJ16948@uriah.heep.sax.de> In-Reply-To: <1.5.4.16.19970423084052.2caf2e18@postoffice.bellatlantic.net>; from Donn Miller on Apr 23, 1997 04:40:52 -0400 References: <1.5.4.16.19970423084052.2caf2e18@postoffice.bellatlantic.net>
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As Donn Miller wrote: > I recently had this problem: while booting, and probing for > sio2 on the isa bus, I get a "not found at 0x3e8", but I checked > with MSD under DOS and this is the correct port address. Also, it > is set to probe at irq4, port 0x3e8, which is the setting I use > under Windows, which works OK there. This doesn't mean anything. :) > It is a Wang 14.4 Data Fax Modem (Hayes Compatible). Many internal modems are known to have a poor UART emulation. You can try to spot the problem by turning on flags 0x80 in the sio2 driver (using boot -c), this will report the failing probe routine. Then, look into /sys/i386/isa/sio.c, maybe you can tweak some DELAY() value to give your UART emulation a little more time to react. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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