-module cpu(
- input clk,
- input reset,
- output tty_write,
- output [7:0] tty_write_data,
- input tty_write_busy,
- input switch_2,
- input switch_3,
- output led_1,
- output led_3
- );
-
- parameter ram_size = 'h8000;
- parameter ram_start = 32'h1_0000;
- parameter reset_vector = ram_start;
- parameter mtvec = ram_start + 'h40;
-
- reg [31:0] registers[31:1];
-
- wire [31:2] memory_interface_fetch_address;
- wire [31:0] memory_interface_fetch_data;
- wire memory_interface_fetch_valid;
- wire [31:2] memory_interface_rw_address;
- wire [3:0] memory_interface_rw_byte_mask;
- wire memory_interface_rw_read_not_write;
- wire memory_interface_rw_active;
- wire [31:0] memory_interface_rw_data_in;
- wire [31:0] memory_interface_rw_data_out;
- wire memory_interface_rw_address_valid;
- wire memory_interface_rw_wait;
-
- cpu_memory_interface #(
- .ram_size(ram_size),
- .ram_start(ram_start)
- ) memory_interface(
- .clk(clk),
- .reset(reset),
- .fetch_address(memory_interface_fetch_address),
- .fetch_data(memory_interface_fetch_data),
- .fetch_valid(memory_interface_fetch_valid),
- .rw_address(memory_interface_rw_address),
- .rw_byte_mask(memory_interface_rw_byte_mask),
- .rw_read_not_write(memory_interface_rw_read_not_write),
- .rw_active(memory_interface_rw_active),
- .rw_data_in(memory_interface_rw_data_in),
- .rw_data_out(memory_interface_rw_data_out),
- .rw_address_valid(memory_interface_rw_address_valid),
- .rw_wait(memory_interface_rw_wait),
- .tty_write(tty_write),
- .tty_write_data(tty_write_data),
- .tty_write_busy(tty_write_busy),
- .switch_2(switch_2),
- .switch_3(switch_3),
- .led_1(led_1),
- .led_3(led_3)
- );
-