LOGIN   :::   RECOVER PASS   :::   GET ACCOUNT    
Browse
  • Projects
  • Code (CVS)
  • Forums
  • News
  • Articles
  • Polls
  •  
    OpenCores
  • FAQ
  • CVS HowTo
  • Mission
  • Media
  • Tools
  • Advertise
  • Mirrors
  • Logos
  • Contact us
  • Find Resources
  • Job Opportunity
  •  
    Tools
  • Search
      
  • Download Cores (CVSGet)
  •  
    More
  • Wishbone
  • Perlilog
  • EDA tools
  • OpenTech CD
  •  
    Navigation: All forums > Openrisc > Message List > Message Post

    Message

    Reply | Reply all
    Date Prev | Date Next | Thread Prev | Thread Next Date Index | Thread Index

    From: Amr El Dieb<amr@s...>
    Date: Wed May 18 07:28:25 CEST 2005
    Subject: [openrisc] How to link the JTAG interface
    Top
    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
    >
    >

     
    Copyright (c) 1999 OPENCORES.ORG. All rights reserved.