Jtag help please

[STAGEBUM]

Got Jtag from dsshouse.com" Universal DUAL BATTERY Powered & BUFFERED JTAG "it is plug and play so I am told set my jkeys to parallel port pc to 1lpt and have had no luck , jtag does not detect my 3900 unfortunatly it is all I have so I can't test on anything else does anyone have Idea if there are more settings I need in my bios I have xp on a dell 4800c also what is Jinterface for when I tried it 124 coms it said does not exist when I tried com 3 said failed com busy with other devise quit and try again. If any one can help would greatly appreciate it.
Thanks to all who can help
Stagebum

[halfpint]

Got Jtag from dsshouse.com" Universal DUAL BATTERY Powered & BUFFERED JTAG "it is plug and play so I am told set my jkeys to parallel port pc to 1lpt and have had no luck , jtag does not detect my 3900 unfortunatly it is all I have so I can't test on anything else does anyone have Idea if there are more settings I need in my bios I have xp on a dell 4800c also what is Jinterface for when I tried it 124 coms it said does not exist when I tried com 3 said failed com busy with other devise quit and try again. If any one can help would greatly appreciate it.
Thanks to all who can help
Stagebum

I have had the same problem with my buffered Jtag and 9 out of 10 times, my ground was not getting good connection.
Directly behind your Jtag port on your 3900 there is a circular indentation with a little nipple (threaded screw) sticking up in the middle of it. Place your alligator clip of your buffered Jtag on this little screw for a good connection.
Pull up your Jkey program plug in your IRD and hit the "Detect" button and you should get your 3900 info popping up.
Of course you must be on the correct Com port to make it work.
Try the Com1 port in preferences, which is the most widely used.
Good Luck..............½pt.

[STAGEBUM]

I have had the same problem with my buffered Jtag and 9 out of 10 times, my ground was not getting good connection.
Directly behind your Jtag port on your 3900 there is a circular indentation with a little nipple (threaded screw) sticking up in the middle of it. Place your alligator clip of your buffered Jtag on this little screw for a good connection.
Pull up your Jkey program plug in your IRD and hit the "Detect" button and you should get your 3900 info popping up.
Of course you must be on the correct Com port to make it work.
Try the Com1 port in preferences, which is the most widely used.
Good Luck..............½pt.

Thank you for you input halpint unfortunatly I tried this also with no luck!