OpenFPGA/openfpga_flow/openfpga_yosys_techlib/openfpga_brams_sim.v

52 lines
732 B
Verilog

module dpram (
input clk,
input wen,
input ren,
input[9:0] waddr,
input[9:0] raddr,
input[31:0] d_in,
output[31:0] d_out );
dual_port_sram memory_0 (
.wclk (clk),
.wen (wen),
.waddr (waddr),
.data_in (d_in),
.rclk (clk),
.ren (ren),
.raddr (raddr),
.d_out (d_out) );
endmodule
module dual_port_sram (
input wclk,
input wen,
input[9:0] waddr,
input[31:0] data_in,
input rclk,
input ren,
input[9:0] raddr,
output[31:0] d_out );
reg[31:0] ram[1023:0];
reg[31:0] internal;
assign d_out = internal;
always @(posedge wclk) begin
if(wen) begin
ram[waddr] <= data_in;
end
end
always @(posedge rclk) begin
if(ren) begin
internal <= ram[raddr];
end
end
endmodule