Why does Test Engine driver synchronization fail when Memory AXI4 drivers use different clock frequencies? - Why does Test Engine driver synchronization fail when Memory AXI4 drivers use different clock frequencies? Description Due to a problem in the Quartus® Prime Pro Edition Software versions 26.1 and earlier, Driver Synchronization between Test Engine Memory AXI4 drivers does not work correctly when the drivers use different clock frequencies. When using post and wait commands across drivers with different clock frequencies, you may observe one of the following behaviors: A post command from a slower driver causes the faster driver to skip multiple wait commands. A post command from a faster driver causes the slower driver to hang and fail to continue from the wait command. Traffic patterns that do not use post or wait commands are not affected. Resolution There is no workaround for this problem. Use Driver Synchronization only when all synchronized drivers use the same clock frequency. Custom Fields values: Troubleshooting QS-182545 novalue ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 26.1 ['Agilex® 3 FPGAs and SoCs', 'Agilex® 5 FPGAs and SoCs', 'Agilex® 7 FPGAs and SoCs', 'Agilex® 9 FPGAs and SoCs']