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Yes to page 10 of the schematic , but the red LED is an error indicator and I believe the RED_LED is D1 and associated with MAX_ERROR.
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Oh yeah, I see, I associated the wrong signal with the RED LED.
Either way, my solutions are what you should test out.
If the error can be cleared by pressing the PGM_CONF button, then you should be able to do something equivalent via USB.
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Given that, it seems to indicate a load error,
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And if you read the source for the MAX II design, you'd see why it was asserting the LED signal.
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and I can trigger on that but this error is pervasive across power cycles until the USB cable is removed ... to me this indicates that the USB cable is holding U5 in some state that causes the U10 MAX II ( EPM2210 ) to flag an error ... possibly not an actual load error but some error ... i would need to check the MAX II code to see what all the sources are of the MAX_ERROR...
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Exactly :)
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I have asked to capture a screen shot of the NIOSII command terminal that is attempting to load a .elf and in this error state, gets an error indicating no USB Blaster is present.
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Ask them to issue the jtagconfig -n command I used above. If the MAX II still shows up, then that means the JTAG chain is still good, and you could either access the MAX II registers to issue a command, or access the Cyclone via JTAG and tell it to reconfigure.
Cheers,
Dave
Honored Contributor
