Hi I need to configure XC2V500 FG456 via the JTAG, but it fails. If I try to read the idcode answer is "00000....". System: Cable Parallel III Ise 6.1 Windows XP It's my first contact with XC2V. Does somebody had similar problem? Greetengs Jerzy Gbur -- "Everything is simple until it'll be comprehensible" - furia ---------------------------------------------------- Już dziś zaplanuj wakacje. Im szybciej tym większa zniżka - nawet do 12%. http://klik.wp.pl/?adr=http%3A%2F%2Fturystyka.wp.pl%2Fwiadomosc.html%3Fwid%3D4843057&sid=140

Is it a factory board or a design of yours? Does the software detect your device properly in the beginning? What are the error messages when you try programming it? I am still using ISE5.2.03i and haven't seen problems with JTAG for long time. However, older versions had some glitches. /Mikhail On Mon, 15 Mar 2004 17:44:50 +0100 "Jerzy G" furia1024 at wp.pl> wrote: JG> Hi JG> JG> I need to configure XC2V500 FG456 via the JTAG, but it fails. If JG> I try to read the idcode answer is "00000....". JG> JG> System: JG> JG> Cable Parallel III JG> Ise 6.1 JG> Windows XP JG> JG> It's my first contact with XC2V. JG> Does somebody had similar problem? JG> JG> Greetengs JG> Jerzy Gbur JG> -- JG> "Everything is simple until it'll be comprehensible" - furia JG> JG> ---------------------------------------------------- JG> Już dziś zaplanuj wakacje. JG> Im szybciej tym większa zniżka - nawet do 12%. JG> http://klik.wp.pl/?adr=http%3A%2F%2Fturystyka.wp.pl%2Fwiadomosc.html%3Fwid%3D4843057&sid=140 JG> JG> JG> _______________________________________________ JG> http://www.opencores.org/mailman/listinfo/cores -- Mikhail Matusov misoma at rogers.com>

Thank for reply

It's board designed in our company, we designed many boards
which were fine, but under other dices (Spartan 2, VirtexE ...)
not for Virtex2. For now on the board there are V2, and power
supply only.

I use Impact and ISE 6.1.03, At start software detect device but says that is UNKNOWN, after that I assign bitfile and when I try to download but it fails because of IDCODE is different then it expect. IDCODE is always zero - "00000..." When I look at TDO signal on the scope it looks normal, Voltage levels are OK. I configure now this system via Slave Serial and it works good. Thank You Regards Jerzy Gbur -- "Everything is simple until it'll be comprehensible" - furia ---------------------------------------------------- Już dziś zaplanuj wakacje. Im szybciej tym większa zniżka - nawet do 12%. http://klik.wp.pl/?adr=http%3A%2F%2Fturystyka.wp.pl%2Fwiadomosc.html%3Fwid%3D4843057&sid=140