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Altera_Forum's avatar
Altera_Forum
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17 years ago

Error:Cant access JTAG chain..help!

When i try to program the cpld i get this error error: can't access jtag chain error: operation failed. I am using a MAX2 CPLD.I would be able to program it a few months ago with no problem b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

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Also when i click on Auto detect I get "unable to scan device chain.Cant scan JTAG chain"[/QUOTE

Did somebody use the board last months ? Check all power supplies on the board ! It is also possible that your USB-Blaster cable is broken ! Can you replace your USB-Blaster for test ?

Kind regards

GPK

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Its been in storage since it last worked.Do i have to power the CPLD to be able to program it?..I think i remember programming it just with the cpld connected to the computer via the usb cable.