Designs without Nios Processor

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originally posted by sony_sony@May 10 2006, 04:30 PM

i am a beginner in using altera nios development board. i am trying to test simple logic on the fpga board without using nios 2 processor. can anyone tell me if this is possible.

i am doing something like this:

i wrote a simple module with 3 output ports and connected to the leds on the board. each output pins drives '1'. when i try to download the .sof file on the board, the leds flash momentarily and then the board enters the 'safe' mode and runs the default factory program. can someone tell me why are the leds flash only momentarily.

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I have used the Nios dev boards for prototyping a couple of non Nios designs.

There&#39;s a line to the configuration controller called reconfigreq_n (or something

very like it) which allows a Nios core to request a re-configuration. If the config

controller sees this low it re-configures the FPGA.

If you don&#39;t want any re-config set this permanently high.

Nial.