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Altera_Forum's avatar
Altera_Forum
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16 years ago

Multiple JTAG control

Hi, Is it possible to use a single NIOS II IDE to control two independant JTAG/USB-blaster based systems? (for example use USB port 1 to control one system and use USB port 2 to control another sy...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Using multiple JTAG adapters or even accessing different JTAG devices on a single JTAG chain with multiple Quartus instances works reliably. Thus I'm sure, that the underlying Quartus JTAG driver stack can handle it. The question is, how you select the programming hardware in the NIOS IDE and where the tool stores this information. It may use a method (e.g. global registry data), that doesn't work with multiple instances. I'm not using NIOS, so I can't check.