maprom.v

来自「debussy中文使用手册」· Verilog 代码 · 共 41 行

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/* Debussy tutorial case: A simplified microprogramming-based CPU
   file name: maprom.v
   description: This part modelize the mapping rom

		addr: 8-bits address bus
		data: 8-bits data bus
		addr_error: address out of range
*/


`timescale 1 ns / 1 ns

module maprom(addr, dout, addr_error);
input [5:0] addr;
output [7:0] dout;
output addr_error;
reg [7:0] maprom [63:0];

 assign dout = maprom[addr]; 
 assign addr_error = ((addr>63) || (addr<0)) ? 1 : 0; 

initial
begin
	$readmemh("../verilog/memory/maprom.dat",maprom,0,63);
end
endmodule