Date: Sat, 17 Jan 2009 18:35:53 -0800 From: Bakul Shah <bakul@bitblocks.com> To: shilp.kamal@yahoo.com Cc: freebsd-hackers@freebsd.org Subject: Re: Remote kernel debugging in FreeBSD using serial communication Message-ID: <20090118023553.8E7C45B11@mail.bitblocks.com> In-Reply-To: Your message of "Sat, 17 Jan 2009 17:57:10 PST." <568396.13362.qm@web45414.mail.sp1.yahoo.com> References: <568396.13362.qm@web45414.mail.sp1.yahoo.com>
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On Sat, 17 Jan 2009 17:57:10 PST Kamlesh Patel <shilp.kamal@yahoo.com> wrote: > Hi All, > > I am trying remote kernel debugging in FreeBSD using serial communication. I > got the following link. > > http://www.ibm.com/developerworks/aix/library/au-debugfreebsd.html#list1 > > My problem is my developing and target system does not have DS25 female port. > > Anyone have any idea about Remote kernel debugging in FreeBSD using DS9 F/F S > erial cable or any other remote debugging idea? Get one or more modular kits like the one below: http://www.cablesnmor.com/modular-kit-db9f-rj45.aspx Now wire it according to the pinouts here: http://yost.com/computers/RJ45-serial/index.html If (in the unlikely event) you have any more RS-232 devices, you can attach a similar db{9,25}{f,m}-rj45 adapter to each -- just make sure that on the RJ-45 side signals come out as specified in the web page above (also reproduced below). Now you can use a "half-twist" 8 conductor cable to connect *any* two such devices. You can even use a 4 or 6 conductor half-twist cable with the same RJ-45 jacks since the layout is such that the more important signals are towards the middle. 1 2 3 4 5 6 7 8 CTS DCD RD SG SG TD DTR RTShelp
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