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Altera_Forum
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17 years ago

Stratix III. Problems with JTAG and Fast AS

Hello all! I have problems with Stratix III configaration on self-made PCB. We use Fast AS with EPCS64 and JTAG. Download cable: USB Blaster (not original ALTERA cable). 1. JTAG detec...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hard to decide from a distance. A trivial cause could be from a I/O pin inadvertently shorted to a JTAG pin. Quartus JTAG chain debugger can help to trace the apparently broken chain.