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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!gmi!zombie.ncsc.mil!MathWorks.Com!europa.eng.gtefsd.com!howland.reston.ans.net!swrinde!news.uh.edu!uuneo.neosoft.com!Starbase.NeoSoft.COM!georgel From: georgel@starbase.neosoft.com (George Livsey) Newsgroups: comp.os.386bsd.questions Subject: Re: FreeBSD 1.1.5.1 can't find 16550 UART MODEM on COM1 Date: 19 Sep 1994 17:58:26 GMT Organization: NeoSoft Internet Services +1 713 684 5969 Lines: 41 Message-ID: <35kjg2$86r@uuneo.neosoft.com> References: <34u053$nn4@uuneo.neosoft.com> <ernstjdt.38.2E7D3067@ctech.ac.za> NNTP-Posting-Host: starbase.neosoft.com X-Newsreader: TIN [version 1.2 PL2] ernstjdt@ctech.ac.za wrote: : In article <34u053$nn4@uuneo.neosoft.com> georgel@starbase.neosoft.com (George Livsey) writes: : >Subject: FreeBSD 1.1.5.1 can't find 16250 UART MODEM on COM1 : ^^^550 I presume : : >From: georgel@starbase.neosoft.com (George Livsey) : >Date: 11 Sep 1994 04:13:22 GMT : > : > I just recompiled the kernel in an effort to get FreeBSD to find a : >modem that I have on COM1. The modem is configured as COM1, irq 4 at 0x3f8. : >When I boot, BSD complains that it cannot find a device at that address. : >It finds the com2 serial port just fine. I noticed that the device : >drivers allow for a 16550 UART and the kernel reports that it finds a : >16450 UART on COM2. If anyone has any suggestions, I would greatly : >appreciate it. : > : >George Livsey : >georgel@starbase.neosoft.com : > : Is the MODEM internal??? I found that most internal modems with chipsets : (I had a Rockwell) somehow don't support the full UART register set or that : FreeBSD sio driver gets confused during the probe and then play safe and : don't attach the device. : If that's you case - hack the sio.c file and knock the probe routine around : a bit. You do this at your own risk, but what the heck, that's what hacking : is all about :-) : Rdgs : Ernst Well a flakey modem with a cheap Rockwell Chipset was the problem. I've been looking at the U.S. Robotics 28.8 internal but now I'm a bit gun-shy. Anyone know of any internal modems that do work with FreeBSD? George Livsey georgel@starbase.neosoft.com