TD4/rom.v at main · mikiken/TD4 · GitHub

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module rom(
	input  [3:0] address,
	output [7:0] data
);

	function [7:0] select;
		input [3:0]	address;
		case (address)

			//Ramen timer!
			4'b0000: select = 8'b10110111; // OUT 0111
			4'b0001: select = 8'b00000001; // ADD A,0001
			4'b0010: select = 8'b11100001; // JNC 0001
			4'b0011: select = 8'b00000001; // ADD A,0001
			4'b0100: select = 8'b11100011; // JNC 0011
			4'b0101: select = 8'b10110110; // OUT 0110
			4'b0110: select = 8'b00000001; // ADD A,0001
			4'b0111: select = 8'b11100110; // JNC 0110
			4'b1000: select = 8'b00000001; // ADD A,0001
			4'b1001: select = 8'b11101000; // JNC 1000
			4'b1010: select = 8'b10110000; // OUT 0000
			4'b1011: select = 8'b10110100; // OUT 0100
			4'b1100: select = 8'b00000001; // ADD 0001
			4'b1101: select = 8'b11101010; // JNC 1010
			4'b1110: select = 8'b10111000; // OUT 1000
			4'b1111: select = 8'b11111111; // JMP 1111
			default: select = 8'bxxxxxxxx;

			/*
			//LED chikachika!
			4'b0000: select = 8'b10110011; // OUT 0011
			4'b0001: select = 8'b10110110; // OUT 0110
			4'b0010: select = 8'b10111100; // OUT 1100
			4'b0011: select = 8'b10111000; // OUT 1000
			4'b0100: select = 8'b10111000; // OUT 1000
			4'b0101: select = 8'b10111100; // OUT 1100
			4'b0110: select = 8'b10110110; // OUT 0110
			4'b0111: select = 8'b10110011; // OUT 0011
			4'b1000: select = 8'b10110001; // OUT 0001
			4'b1001: select = 8'b11110000; // JMP 0000
			4'b1010: select = 8'b00000000;
			4'b1011: select = 8'b00000000;
			4'b1100: select = 8'b00000000;
			4'b1101: select = 8'b00000000;
			4'b1110: select = 8'b00000000;
			4'b1111: select = 8'b00000000;
			default: select = 8'bxxxxxxxx;
			*/
		endcase
	endfunction

	assign data = select(address);

endmodule