RISC-V-CPU/CPU.sv at main · Dom324/RISC-V-CPU · GitHub

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module CPU(
  input logic CLK_VGA, CLK_CPU, resetp, resetn,

  input logic keyboard_data, keyboard_clock,

  output logic hsync, vsync, VGA_pixel,

  input logic [7:0] DIP_switch,

  //SPI rozhrani
  output logic SPI_CS, SPI_SCK, SPI_SI,
  input logic SPI_SO,

  /*output flash_io0_oe,
	output flash_io1_oe,
	output flash_io2_oe,
	output flash_io3_oe,

	output flash_io0_do,
	output flash_io1_do,
	output flash_io2_do,
	output flash_io3_do,

	input flash_io0_di,
	input flash_io1_di,
	input flash_io2_di,
	input logic flash_io3_di*/

  input logic stall_debug
  );

  logic memory_enable, fetch_valid, mem_read_data_valid, mem_write_ready;
  logic fetch_enable;
  logic [1:0] store_size;
  logic [31:0] instr_fetch, mem_addr, write_data, mem_read_data;
  logic [19:0] nextPC;

  logic [7:0] pressed_key;
  logic clean_key_buffer, keyboard_valid;
  logic [31:0] keyboard_scancode;

  logic video_write_enable;
  logic [7:0] video_write_data;
  logic [10:0] video_write_addr;

  logic [31:0] debug, debug_core, debug_mem;

  //logic [31:0] core_debug;

always_comb begin

  if(DIP_switch[6:0] == 7'b1111111) debug = {3'b000, keyboard_valid, 20'h000000, pressed_key};
  //else if(DIP_switch[6:0] == 7'b1111110) debug = {3'b000, keyboard_valid, 20'h000000, keyboard_scancode};
  else if(DIP_switch[6:0] == 7'b1111110) debug = keyboard_scancode;
  else if(DIP_switch[6]) debug = debug_core;
  else debug = debug_mem;

      //debug = debug_core;

end

display_engine display_engine(
                              .CLK_CPU(CLK_CPU),
                              .CLK_VGA(CLK_VGA),
                              .resetn(resetn),

                              .video_write_enable(video_write_enable),
                              .video_write_data(video_write_data),
                              .video_write_addr(video_write_addr),

                              .VGA_pixel(VGA_pixel),
                              .hsync(hsync),
                              .vsync(vsync),

                              .DIP_switch(DIP_switch),
                              .debug(debug)
  );

  memory memory(
                .CLK_CPU(CLK_CPU),
                .resetn(resetn),
                .resetp(resetp),

                .pressed_key(pressed_key),
                .clean_key_buffer(clean_key_buffer),
                .keyboard_valid(keyboard_valid),

                .video_write_enable(video_write_enable),
                .video_write_data(video_write_data),
                .video_write_addr(video_write_addr),

                .mem_en(memory_enable),
                .store_size(store_size),

                .mem_addr(mem_addr),
                .write_data(write_data),
                .write_ready(mem_write_ready),

                .mem_read_data(mem_read_data),
                .read_data_valid(mem_read_data_valid),

                .nextPC(nextPC),
                .instr_fetch(instr_fetch),
                .fetch_valid(fetch_valid),
                .fetch_enable(fetch_enable),

                .SPI_CS(SPI_CS),
                .SPI_SCK(SPI_SCK),
                .SPI_SI(SPI_SI),
                .SPI_SO(SPI_SO),
                /*.flash_io0_oe(flash_io0_oe),
                .flash_io1_oe(flash_io1_oe),
                .flash_io2_oe(flash_io2_oe),
                .flash_io3_oe(flash_io3_oe),

                .flash_io0_do(flash_io0_do),
                .flash_io1_do(flash_io1_do),
                .flash_io2_do(flash_io2_do),
                .flash_io3_do(flash_io3_do),

                .flash_io0_di(flash_io0_di),
                .flash_io1_di(flash_io1_di),
                .flash_io2_di(flash_io2_di),
                .flash_io3_di(flash_io3_di)*/

                .DIP_switch(DIP_switch),
                .debug(debug_mem)
                );

core core(
          .resetn(resetn),
          .CLK(CLK_CPU),

          .instr_fetch(instr_fetch),
          .fetch_valid(fetch_valid),
          .PCfetch(nextPC),
          .fetch_enable(fetch_enable),

          .mem_read_data(mem_read_data),
          .mem_read_data_valid(mem_read_data_valid),

          .memory_en_out(memory_enable),
          .store_size(store_size),
          .mem_write_data(write_data),
          .mem_write_ready(mem_write_ready),

          .mem_addr(mem_addr),

          .DIP_switch(DIP_switch),
          .debug(debug_core),
          .stall_debug(stall_debug)
          );

keyboard keyboard(
                .CLK(CLK_CPU),
                .keyboard_data(keyboard_data),
                .keyboard_scancode,
                .keyboard_clock(keyboard_clock),
                .clean_key_buffer(clean_key_buffer),
                .pressed_key(pressed_key),
                .keyboard_valid(keyboard_valid)
                );

endmodule