howto use LEs insted of M9K?

Hi,

I'm using a UART 16550 core from opencores in the SOPC builder, works very fine. It has build-in rx/tx FIFO, 16 Byte each. Quartus II uses a whole M9K-Block, which means a lot of wasted RAM. My Cyclone 3 is half full in LEs, but I could use more RAM.

Long story short, I did not found a way to tell Quartus to use Logic Elements for this memory. Is this not possible here?

I've tried the Assignment "Auto RAM to Logic Cell Conversion" but this didn't work.

The RAM is inferred as follows:

module raminfr   
        (clk, we, a, dpra, di, dpo); 
parameter addr_width = 4;
parameter data_width = 8;
parameter depth = 16;
input clk;   
input we;   
input   a;   
input   dpra;   
input   di;   
//output  spo;   
output  dpo;   
reg     ram ; 
wire  dpo;
wire   di;   
wire   a;   
wire   dpra;   
 
  always @(posedge clk) begin   
    if (we)   
      ram <= di;   
  end   
//  assign spo = ram;   
  assign dpo = ram;   
endmodule