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If you are using or plan to use RMW type of memory operation in RTL and then want to compile memory to Xtreme using +mc, then please keep in mind following-
RMW is typically used to implement bitwise masking in the following way, e.g.
always@(posedge write_clk) mem[write_addr] <= (bitmask & din) | (~bitmask & mem[write_addr]);
If you use this style, then the memory generated by MC will be quite complicated, using axis_behctrl and a behavioral statemachine.
Instead, use the following method for achieving the same functionality:
assign write_dout = mem[write_addr];always@(posedge write_clk) mem[write_addr] <= (bitmask & din) | (~bitmask & write_dout);
The above is correctly transformed to simple axis_smem with one async. read port and a sync. write port. This is easier to debug and faster to simulate.
The above recommendation only applies to a sync. write port.
You can always look at MC generated memories by using +mcdbg switch (which creates AXIS_MC.DEBUG text file) to ensure memories are transformed to their simple axis_smem forms and not having to use axis_behctrl.