Why do I read the wrong values from my VHDL 3D array in hardware and gate level simulation? - Why do I read the wrong values from my VHDL 3D array in hardware and gate level simulation? Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 20.3, you may see that an incorrect value is returned from reads to a 3D array in hardware and gate level simulation. This problem occurs when array is implemented as ROM or RAM in elaboration. Resolution To work around this problem, rewrite the 3D array as a 2D array. This problem is fixed starting with the Intel® Quartus® Prime Pro Edition software version 20.4. Custom Fields values: ['novalue'] Troubleshooting 18013757675 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.4 20.3 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']