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Altera_Forum
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18 years ago

USB Blaster Rev. B compatibly with Cyclone III Starter Board???

I am working with the Nios II Emb. Eval. Kit Cyclone III Edition and I am trying to configure the FPGA by USB Blaster Rev. B (taken from an Cyclone II Dev. Kit). But the connection is very unstable. ...
Altera_Forum's avatar
Altera_Forum
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18 years ago

You can tell your Prof that there are known problems with the Cyclone III board and external JTAG programming, see http://www.alteraforum.com/forum/showthread.php?t=1507. According to some reports, the problem may also exist with other programming adapters, e. g. Rev. C Blaster. It must not necessary apply for your new board, it may be caused by the multiplexing circuit to on-board Blaster.

The TCK serial resistor with Rev. B Blaster is R14, originally a 10 ohm 0603 resistor.