Map Matrices to ROM

To map a matrix constant to ROM:

• Read one matrix element at a time.

• The matrix size must be greater than or equal to the RAM Mapping Threshold value.

  To learn how to set the RAM mapping threshold in Simulink^®, see the RAM mapping threshold (bits) section in RAM Mapping Parameters. To learn how to set the RAM mapping threshold in MATLAB, see Enable RAM Mapping.

• Read accesses to the matrix must not be within a feedback loop.

If your MATLAB^® code meets these requirements, HDL Coder™ inserts a no-reset register at the output of the matrix in the generated code. Many synthesis tools infer a ROM from this code pattern.