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Altera_Forum
Honored Contributor
17 years agoWhy not through the JTAG interface?
Using a SOPC system (I don't even think you need a NIOS processor) and the system console tools (http://www.altera.com/literature/ug/ug_system_console.pdf), you can control SOPC builder components from the PC using TCL scripts. Add PIO components to your SOPC system and you can directly read/write the values from the PC. It may seem overkill at first, but compared to a USB/Ethernet or even serial interface, you don't need to design your own communication protocol, and this solution is easy to scale.