Test Example Models and Demos

Example models can be accessed from the MATLAB demo browser. To open the example models, type » demos on the MATLAB prompt, and run one of the “OPAL-RT RT-XSG” demo models. The example models are located in the following folder: <RT_XSG root folder>/Examples.

Physical Resource Shortage

Resource management in an FPGA design is a complex science. Even if the target platform includes a dense reconfigurable device, resources are limited. In this case, design optimization for resource usage must be performed. The first step to this optimization is to look at the map (or XFlow.results) report.

This file gives information on which type of resource is insufficient in the device. The designer must find which of the blocks in the design can be optimized to free these resources. In particular, a small decrease applied to memory or DSP block port widths can improve significantly the resource usage efficiency of the entire system.

Parallelly, routing problems may occur if long combinational paths are found between sequential elements in the system. Routing fails if the optimizer is not able to ensure that the signal coming out from any sequential element has the time to reach all its target sequential elements between two successive sampling steps. This problem can be resolved by either inserting sequential elements (registers or delay blocks) into the path to resample the data or by decreasing the sampling rate of the signal.