Read only memory. This module can be used to store permanent information, such as the code of a program executed by the processor, for example.

	ROM #(
		.ADDRESS_WIDTH(),
		.DATA_WIDTH(),
		.MEMORY_DEPTH(),
		.MEMORY_FILE("data.mem")
	) ROM_inst(
		.Clock(Clock),
		.Reset(Reset),
		.ReadEnable_i(),
		.Address_i(),
		.Data_o()
	);

• ADDRESS_WIDTH - Number of address bus bits. Determines the size of the memory. The memory size is equal to 2^ADDRESS_WIDTH.
• DATA_WIDTH - Number of data bus bits. Most common values are 8, 16 and 32.
• MEMORY_DEPTH - Number of words in the memory array.
• MEMORY_FILE - A file with the contents of the memory to be loaded as soon as the device starts up.
• Clock - Clock signal, active rising edge.
• Reset - Asynchronous reset, active low.
• ReadEnable_i - If 1 then on the next clock edge the requested data is ready.
• Address_i[ADDRESS_WIDTH-1:0] - Address of the byte requested to be read on the next clock edge.
• Data_o[DATA_WIDTH-1:0] - Value of the requested byte.

VCD info: dumpfile rom.vcd opened for output.
===== START =====
MEMORY_DEPTH: 16
Memory[          0] = 0f
Memory[          1] = 1e
Memory[          2] = 2d
Memory[          3] = 3c
Memory[          4] = 4b
Memory[          5] = 5a
Memory[          6] = 69
Memory[          7] = 78
Memory[          8] = 87
Memory[          9] = 96
Memory[         10] = a5
Memory[         11] = b4
Memory[         12] = c3
Memory[         13] = d2
Memory[         14] = e1
Memory[         15] = f0
===== END =====
rom_tb.v:70: $finish called at 400 (1ns)