FPGA - Summary of bugs in ISE (in update)

1.procedural assignment to a non-register DATA_BUS is not permitted

This kind of error is generally the use of non-reg variables in the always statement, all signals in the always statement must be reg variables, low-level errors, (unfamiliar with syntax)

2

The following error occurred:

ERROR:Xst:880 - "mst_pulse_calculation.v" line 124: Cannot mix blocking and non blocking assignments on signal .
ERROR:Xst:880 - "mst_pulse_calculation.v" line 125: Cannot mix blocking and non blocking assignments on signal .

In English, it means that blocking and non-blocking assignment of signals cannot be performed at the same time.