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发表于 2009-7-5 22:13:12
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显示全部楼层
module simple_dual_port_ram_single_clock
#(parameter DATA_WIDTH=8, ADDR_WIDTH=6)
(
input [(DATA_WIDTH-1):0] data,
input [(ADDR_WIDTH-1):0] read_addr, write_addr,
input we, clk,
output reg [(DATA_WIDTH-1):0] q
);
// Declare the RAM variable
reg [DATA_WIDTH-1:0] ram[2**ADDR_WIDTH-1:0];
always @ (posedge clk)
begin
// Write
if (we)
ram[write_addr] <= data;
// Read (if read_addr == write_addr, return OLD data). To return
// NEW data, use = (blocking write) rather than <= (non-blocking write)
// in the write assignment. NOTE: NEW data may require extra bypass
// logic around the RAM.
q <= ram[read_addr];
end
endmodule |
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