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Altera_Forum's avatar
Altera_Forum
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13 years ago

Detecting Jtag connection

I want to be able to detect if the Jtag USB Blaster is connected, or if it is and connected to the NIOS II debugger. Is there a simple address to read to check for its presence? I have my own ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Answering my own post: It appears a simple check of the AC bit in the control register is all that is required to detect JTAG on power up. On 2 different systems so far it has proven to work. I don't know if that is the correct method, but I'll go with it until something better or correct comes up.

Bill