nios II implementation problem

nipu_n,

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*how can i store some data into on-chip ROM?[/b]

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When you create your software with Nios II IDE and use somewhere in your programme that on-chip ROM, the compiler creates a &#39;rom-name.hex&#39; file in your fpga directory, containing the data you&#39;ve defined ( e.g. as &#39;const int rom_data[]&#39; ). SOPC-Builder now adds your data to FPGA configuration data in its next compilation step. ROM, created with &#39;MegaWizard Plug-In Manager&#39; can be initialized by using &#39;Tools->In-System Memory Content Editor&#39;

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* how it is possible to count the number of LEs used by different on-chip components?[/b]

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I don&#39;t know if there is a feature to estimate the amount of LEs, but after compiling you can see it in the hierachy window or in

&#39;Compilation Report->Fitter->Resource Section&#39;. The amount of LEs depends on your specific settings for the compilation process.

Mike