It is possible to modify the demonstration test bench to drive the core inputs with different data or to perform different operations.
Input data is pre-generated in the create_ip_table function and stored in the IP_DATA constant. New input data frames can be added by defining new functions and constants. Make sure that each input data frame is of the T_IP_TABLE array type.
All operations performed by the demonstration test bench to drive the core's inputs are done in the data_stimuli process. This process also contains procedures to simplify driving a frame of input data. Configuration is requested in this process by setting cfg_* signals to the desired configuration and setting the do_config shared variable to either IMMEDIATE or AFTER_START . The configuration signals are actually driven by the config_stimuli process.
The data_stimuli process is comprehensively commented, to explain clearly what is being done. New configuration and data operations can be added by copying and modifying sections of this process.
The clock frequency of the core can be modified by changing the CLOCK_PERIOD constant.