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Altera_Forum
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15 years ago

JTAG Debugger help / Cyclone III

I have problems with AS Configuration (using EPCS16) on my Cyclone III (speed/grade I7). The signals appear to be very clean but I see nSTATUS being driven low 4.38 usec after the end of the Fast ...
Altera_Forum's avatar
Altera_Forum
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15 years ago

I decided that I needed to use JTAG on the unconfigured Cyclone III, and probably to issue not just that one instruction, but possibly several others.

Fortunately I resolved my AS configuration issue, and I don't need to mess with the boundary scan opcodes this time. But, a need could arise sometime in the future.

I think I've located a resource, that will show me more about how to use boundary scan. On the Altera website --

debugging jtag chain integrity (odjtag1110)

(a 1/2 hour online course; free)

http://www.altera.com/education/training/courses/odjtag1110

Larry