Description
Yes, in the Quartus® II software versions earlier than version 2.2, there is a known issue that affects simulation of multipliers when they are implemented in DSP blocks.
The problem is fixed in beginning with the Quartus II software version 2.2.
The following configurations are affected in version 2.1 SP1 and earlier:
- Mixed-sign multiplications of 19 bits and greater
- Dynamic-sign multiplications of 19 bits and greater
- Signed multiplications greater than 36 bits