If you turn on Enable systolic delay registers in the ALTMULT_ADD MegaWizard Plug-In Manager generation fails for Stratix V - If you turn on Enable systolic delay registers in the ALTMULT_ADD MegaWizard Plug-In Manager generation fails for Stratix V Description On the Systolic/Preload page of the ALTMULT_ADD MegaWizard Plug-In Manager, if you turn on Enable systolic delay registers , generation fails with messages similar to the following: Error: Illegal parameter value: SYSTOLIC_DELAY1 and SYSTOLIC_DELAY3 are used without chainin port Error: Assertion error: The current megafunction is configured for use with the clear box feature and cannot be used when the clear box feature is disabled . Resolution The systolic delay registers feature is not available in the current release of the Stratix V ALTMULT_ADD megafunction. Do not turn on Enable systolic delay registers . Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 10.0 ['Stratix® V FPGAs'] ['novalue'] ['novalue'] ['novalue']