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Message
From: Amr El Dieb<amr@s...>
Date: Wed May 18 07:28:25 CEST 2005
Subject: [openrisc] How to link the JTAG interface
Thanks Jeremy for the reply, but actually i am using a board from Xilinx that doesn't contain any free GPIOs, so this is way i am looking for a solution to configure the FPGA and download the code on the OR1200 from the same JTAG interface.
Jeremy Fillingim wrote:
>I assume you just want to be able to use GDB to debug code running on >your OR1200. > >You don't need to link the OR1200 JTAG interface to the FPGA JTAG >interface. Just route the JTAG pins from the OR1200 out to available >GPIOs and connect your JTAG cable to those pins. > >This works very well for debugging code. > >I can think of a way to put the OR1200 JTAG and the FPGA JTAG in a >single loop, but it doesn't seem very useful since you'd lose the >ability to configure the FPGA via JTAG. > >On 5/17/05, Amr El Dieb <amr@s...> wrote: > > >>I am trying to implement the OR1200 microprocessor on Virtex II FPGA, >>and i want to link the local JTAG interface of the OR1200 (debug port) >>to the external JTAG interface of the FPGA. So, i want to ask if this is >>possible or not? and if it is possible, how i can do it? >> >>Thanks in advance. >> >>_______________________________________________ >>http://www.opencores.org/mailman/listinfo/openrisc >> >> >> > >_______________________________________________ >http://www.opencores.org/mailman/listinfo/openrisc > >
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