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Altera_Forum's avatar
Altera_Forum
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15 years ago

Error message "Invalid JTAG configuration" with SignalTap

I am using Quartus 10.1 on Win7. Configurating my Cyclone 3 FPGA with USB-Blaster works fine (downloading sof-file via SignalTap "SOF Manager" Button). But it is not possible to comunicate with th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

No, just one instance is open.

But I have found out, that this happens when the qsf-file is set as read-only (version management used). Setting the file to writeable solves this problem.

But unfortunately no hint is given by quartus.

Thanks for replaying. Works fine now.