From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 2 Nov 2010 10:30:26 +0100 Message-ID: From: Gorka Guardiola To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=ISO-8859-1 Subject: Re: [9fans] JTAG Topicbox-Message-UUID: 74b791f4-ead6-11e9-9d60-3106f5b1d025 On Tue, Nov 2, 2010 at 7:32 AM, Bhanu Nagendra Pisupati wrote: > I am trying to understand the end objective of the JTAG work discussed in > one of the threads last week (sorry, I'm behind on my mails!). > There was one response that said: "The hope is that it would help debug > usb/bt device issues on kw."; but beyond this I could not make out the use > case for this work from the thread. > > Is the idea to use JTAG as a communication pipe on which to export virtual > filesystems from within the device? Can somebody please elaborate? > The idea is to use JTAG to peek/set at the registers and pins and maybe stop/start the sheevaplug/guruplug. The JTAG on this machines can be accessed through an endpoint in the usb/serial console. -- - curiosity sKilled the cat