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The hdldemolib library provides HDL-specific block implementations supporting simulation and code generation for:
Single and dual-port RAMs
Counter with single-shot and free-running modes
Minimum resource FFT
Operations on bits and bit fields
These blocks are implemented as subsystems. The blocks provide HDL-specific functionality that is not currently supported by other Simulink blocks.
To open the hdldemolib library, type the following command at the MATLAB prompt:
hdldemolib
The following figure shows the top-level hdldemolib library window.

![]() | The hdldemolib Block Library | RAM Blocks | ![]() |

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