doom_riscv/projects/memtest/rtl/hdmi_buf.v

/*
 * hdmi_buf.v
 *
 * vim: ts=4 sw=4
 *
 * Copyright (C) 2020-2021  Sylvain Munaut <tnt@246tNt.com>
 * SPDX-License-Identifier: CERN-OHL-P-2.0
 */

`default_nettype none

module hdmi_buf (
	// Write port
	input  wire [ 8:0] waddr,
	input  wire [31:0] wdata,
	input  wire        wren,

	// Read port
	input  wire [ 9:0] raddr,
	output wire [15:0] rdata,

	// Clock
	input  wire clk
);

	genvar i;

	generate
		for (i=0; i<4; i=i+1)
			ice40_ebr #(
				.READ_MODE(2),
				.WRITE_MODE(1)
			) ebr_wrap_I (
				.wr_addr(waddr),
				.wr_data({wdata[i*4+:4], wdata[16+i*4+:4]}),
				.wr_mask(8'h00),
				.wr_ena(wren),
				.wr_clk(clk),
				.rd_addr(raddr),
				.rd_data(rdata[i*4+:4]),
				.rd_ena(1'b1),
				.rd_clk(clk)
			);
	endgenerate

endmodule