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Altera_Forum
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14 years ago

Two SOPCs - SOPC#2 gives no jtag uart output

Hi guys, I have a design that instantiates two different SOPCs, each containing its own NIOS II cpu and JTAG UART. I compiled a different C-app for each NIOS II. Quartus compiles all OK, but ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

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Yes, that does detect the JTAG UART (so it detects 2 JTAG debug instances and 2 JTAG UARTS in one FPGA). As said, I can connect to the JTAG UART, but it is not ouputting my printf messages.

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Did each JTAG UART end with a different instance ID? I forget what the value is but it should be something like 0C006Exx where xx should be unique between your two JTAG UARTs. If they overlap Quartus II should have raised an error during compilation so just check to make sure they don't indeed overlap.