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@ -1,6 +1,6 @@
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module beeper (
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input wire [7:0] sound_timer
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);
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);
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import "DPI-C" function void set_beep(bit beep);
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134
chip8.sv
134
chip8.sv
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@ -1,11 +1,11 @@
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module chip8 (
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input wire clk_in
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);
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);
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bit [31:0] vram [0:2047];
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bit [7:0] memory [0:4095];
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bit [31:0] vram[0:2047];
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bit [7:0] memory[0:4095];
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bit keyboard [15:0];
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bit keyboard[15:0];
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bit [7:0] sound_timer;
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bit [15:0] program_counter;
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@ -15,39 +15,121 @@ module chip8 (
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beeper beeper (sound_timer);
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cpu cpu (memory, clk_in, keyboard, random_number, cycle_counter, program_counter, vram, sound_timer);
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cpu cpu (
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memory,
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clk_in,
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keyboard,
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random_number,
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cycle_counter,
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program_counter,
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vram,
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sound_timer
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);
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gpu gpu (vram);
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keyboard kb (clk_in, keyboard);
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rng randy (clk_in, program_counter, keyboard, cycle_counter, random_number);
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keyboard kb (
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clk_in,
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keyboard
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);
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rng randy (
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clk_in,
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program_counter,
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keyboard,
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cycle_counter,
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random_number
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);
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rom_loader loader (memory);
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initial begin
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bit [7:0] fontset [79:0] = {
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8'hF0, 8'h90, 8'h90, 8'h90, 8'hF0, // 0
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8'h20, 8'h60, 8'h20, 8'h20, 8'h70, // 1
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8'hF0, 8'h10, 8'hF0, 8'h80, 8'hF0, // 2
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8'hF0, 8'h10, 8'hF0, 8'h10, 8'hF0, // 3
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8'h90, 8'h90, 8'hF0, 8'h10, 8'h10, // 4
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8'hF0, 8'h80, 8'hF0, 8'h10, 8'hF0, // 5
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8'hF0, 8'h80, 8'hF0, 8'h90, 8'hF0, // 6
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8'hF0, 8'h10, 8'h20, 8'h40, 8'h40, // 7
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8'hF0, 8'h90, 8'hF0, 8'h90, 8'hF0, // 8
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8'hF0, 8'h90, 8'hF0, 8'h10, 8'hF0, // 9
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8'hF0, 8'h90, 8'hF0, 8'h90, 8'h90, // A
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8'hE0, 8'h90, 8'hE0, 8'h90, 8'hE0, // B
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8'hF0, 8'h80, 8'h80, 8'h80, 8'hF0, // C
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8'hE0, 8'h90, 8'h90, 8'h90, 8'hE0, // D
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8'hF0, 8'h80, 8'hF0, 8'h80, 8'hF0, // E
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8'hF0, 8'h80, 8'hF0, 8'h80, 8'h80 // F
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bit [7:0] fontset[79:0] = {
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8'hF0,
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8'h90,
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8'h90,
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8'h90,
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8'hF0, // 0
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8'h20,
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8'h60,
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8'h20,
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8'h20,
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8'h70, // 1
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8'hF0,
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8'h10,
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8'hF0,
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8'h80,
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8'hF0, // 2
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8'hF0,
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8'h10,
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8'hF0,
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8'h10,
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8'hF0, // 3
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8'h90,
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8'h90,
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8'hF0,
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8'h10,
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8'h10, // 4
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8'hF0,
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8'h80,
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8'hF0,
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8'h10,
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8'hF0, // 5
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8'hF0,
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8'h80,
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8'hF0,
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8'h90,
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8'hF0, // 6
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8'hF0,
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8'h10,
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8'h20,
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8'h40,
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8'h40, // 7
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8'hF0,
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8'h90,
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8'hF0,
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8'h90,
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8'hF0, // 8
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8'hF0,
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8'h90,
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8'hF0,
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8'h10,
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8'hF0, // 9
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8'hF0,
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8'h90,
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8'hF0,
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8'h90,
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8'h90, // A
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8'hE0,
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8'h90,
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8'hE0,
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8'h90,
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8'hE0, // B
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8'hF0,
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8'h80,
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8'h80,
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8'h80,
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8'hF0, // C
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8'hE0,
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8'h90,
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8'h90,
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8'h90,
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8'hE0, // D
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8'hF0,
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8'h80,
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8'hF0,
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8'h80,
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8'hF0, // E
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8'hF0,
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8'h80,
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8'hF0,
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8'h80,
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8'h80 // F
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};
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// Load fontset into memory
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for(int i = 0; i < 80; i++) begin
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for (int i = 0; i < 80; i++) begin
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memory[i] = fontset[79-i];
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end
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// Initialize keyboard bits
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for(int i = 0; i < 15; i++) begin
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for (int i = 0; i < 15; i++) begin
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keyboard[i] = 0;
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end
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end
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114
cpu.sv
114
cpu.sv
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@ -1,21 +1,21 @@
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module cpu(
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output bit [7:0] memory [0:4095],
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module cpu (
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output bit [7:0] memory[0:4095],
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input wire clk_in,
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input wire keyboard [15:0],
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input wire keyboard[15:0],
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input wire [7:0] random_number,
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output int cycle_counter,
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output wire [15:0] program_counter,
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output wire [31:0] vram [0:2047],
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output wire [31:0] vram[0:2047],
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output wire [7:0] sound_timer
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);
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);
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bit halt;
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int watch_key;
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logic [15:0] stack [0:15];
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logic [15:0] stack[0:15];
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logic [15:0] index_reg;
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logic [3:0] stack_pointer;
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logic [7:0] registers [0:15];
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logic [7:0] registers[0:15];
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logic [15:0] opcode;
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logic [7:0] delay_timer;
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@ -48,16 +48,14 @@ module cpu(
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$display("HW : PC %0d 0x%h", program_counter, program_counter);
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if (cycle_counter % 20 == 0) begin
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if (delay_timer > 0)
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delay_timer--;
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if (sound_timer > 0)
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sound_timer--;
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if (delay_timer > 0) delay_timer--;
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if (sound_timer > 0) sound_timer--;
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end
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casez(opcode)
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casez (opcode)
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'h00E0: begin
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$display("HW : INSTR CLS");
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for(int i = 0; i < 2048; i++) begin
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for (int i = 0; i < 2048; i++) begin
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vram[i] = 0;
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end
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end
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@ -80,87 +78,87 @@ module cpu(
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'h3???: begin
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$display("HW : INSTR SE Vx, byte");
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scratch = (opcode & 'h00FF);
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if (scratch[7:0] == registers[(opcode & 'h0F00) >> 8]) begin
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if (scratch[7:0] == registers[(opcode&'h0F00)>>8]) begin
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program_counter += 2;
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end
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end
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'h4???: begin
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$display("HW : INSTR SNE Vx, byte");
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scratch = (opcode & 'h00FF);
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if (scratch[7:0] != registers[(opcode & 'h0F00) >> 8]) begin
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if (scratch[7:0] != registers[(opcode&'h0F00)>>8]) begin
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program_counter += 2;
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end
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end
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'h5??0: begin
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$display("HW : INSTR SE Vx, Vy");
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if (registers[(opcode & 'h00F0) >> 4] == registers[(opcode & 'h0F00) >> 8]) begin
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if (registers[(opcode&'h00F0)>>4] == registers[(opcode&'h0F00)>>8]) begin
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program_counter += 2;
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end
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end
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'h6???: begin
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$display("HW : INSTR LD Vx, byte");
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scratch = (opcode & 'h00FF);
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registers[(opcode & 'h0F00) >> 8] = scratch[7:0];
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registers[(opcode&'h0F00)>>8] = scratch[7:0];
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end
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'h7???: begin
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$display("HW : INSTR ADD Vx, byte");
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scratch = (opcode & 'h00FF);
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registers[(opcode & 'h0F00) >> 8] += scratch[7:0];
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registers[(opcode&'h0F00)>>8] += scratch[7:0];
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end
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'h8??0: begin
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$display("HW : INSTR LD Vx, Vy");
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registers[(opcode & 'h0F00) >> 8] = registers[(opcode & 'h00F0) >> 4];
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registers[(opcode&'h0F00)>>8] = registers[(opcode&'h00F0)>>4];
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end
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'h8??1: begin
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$display("HW : INSTR OR Vx, Vy");
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registers[(opcode & 'h0F00) >> 8] |= registers[(opcode & 'h00F0) >> 4];
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registers[(opcode&'h0F00)>>8] |= registers[(opcode&'h00F0)>>4];
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registers[15] = 0;
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end
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'h8??2: begin
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$display("HW : INSTR AND Vx, Vy");
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registers[(opcode & 'h0F00) >> 8] &= registers[(opcode & 'h00F0) >> 4];
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registers[(opcode&'h0F00)>>8] &= registers[(opcode&'h00F0)>>4];
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registers[15] = 0;
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end
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'h8??3: begin
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$display("HW : INSTR XOR Vx, Vy");
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registers[(opcode & 'h0F00) >> 8] ^= registers[(opcode & 'h00F0) >> 4];
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registers[(opcode&'h0F00)>>8] ^= registers[(opcode&'h00F0)>>4];
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registers[15] = 0;
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end
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'h8??4: begin
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$display("HW : INSTR ADD Vx, Vy");
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scratch_8 = registers[(opcode & 'h0F00) >> 8];
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registers[(opcode & 'h0F00) >> 8] += registers[(opcode & 'h00F0) >> 4];
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registers[15] = {7'b0000000, scratch_8 > registers[(opcode & 'h0F00) >> 8]};
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scratch_8 = registers[(opcode&'h0F00)>>8];
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registers[(opcode&'h0F00)>>8] += registers[(opcode&'h00F0)>>4];
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registers[15] = {7'b0000000, scratch_8 > registers[(opcode&'h0F00)>>8]};
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end
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'h8??5: begin
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$display("HW : INSTR SUB Vx, Vy");
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scratch_8 = registers[(opcode & 'h0F00) >> 8];
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registers[(opcode & 'h0F00) >> 8] -= registers[(opcode & 'h00F0) >> 4];
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registers[15] = {7'b0000000, scratch_8 >= registers[(opcode & 'h0F00) >> 8]};
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scratch_8 = registers[(opcode&'h0F00)>>8];
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registers[(opcode&'h0F00)>>8] -= registers[(opcode&'h00F0)>>4];
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registers[15] = {7'b0000000, scratch_8 >= registers[(opcode&'h0F00)>>8]};
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end
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'h8??6: begin
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$display("HW : INSTR SHR Vx {, Vy}");
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scratch_8 = registers[(opcode & 'h0F00) >> 8];
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registers[(opcode & 'h0F00) >> 8] = registers[(opcode & 'h00F0) >> 4]>> 1;
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scratch_8 = registers[(opcode&'h0F00)>>8];
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registers[(opcode&'h0F00)>>8] = registers[(opcode&'h00F0)>>4] >> 1;
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registers[15] = {7'b0000000, ((scratch_8 & 8'h01) == 8'h01)};
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end
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'h8??7: begin
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$display("HW : INSTR SUBN Vx, Vy");
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scratch_8 = registers[(opcode & 'h00F0) >> 4];
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scratch_82 = registers[(opcode & 'h0F00) >> 8];
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scratch_8 = registers[(opcode&'h00F0)>>4];
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scratch_82 = registers[(opcode&'h0F00)>>8];
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registers[(opcode & 'h0F00) >> 8] = registers[(opcode & 'h00F0) >> 4] - registers[(opcode & 'h0F00) >> 8];
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registers[15] = {7'b0000000, (scratch_8 >= scratch_82)};
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end
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'h8??E: begin
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$display("HW : INSTR SHL Vx {, Vy}");
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scratch_8 = registers[(opcode & 'h0F00) >> 8];
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registers[(opcode & 'h0F00) >> 8] = registers[(opcode & 'h00F0) >> 4]<< 1;
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scratch_8 = registers[(opcode&'h0F00)>>8];
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registers[(opcode&'h0F00)>>8] = registers[(opcode&'h00F0)>>4] << 1;
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registers[15] = {7'b0000000, (scratch_8[7]) };
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registers[15] = {7'b0000000, (scratch_8[7])};
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end
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'h9??0: begin
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$display("HW : INSTR SNE Vx, Vy");
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if (registers[(opcode & 'h00F0) >> 4] != registers[(opcode & 'h0F00) >> 8]) begin
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if (registers[(opcode&'h00F0)>>4] != registers[(opcode&'h0F00)>>8]) begin
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program_counter += 2;
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end
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end
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@ -177,7 +175,7 @@ module cpu(
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// TODO: use a real RNG module, this is not synthesizeable
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scratch = {8'h00, random_number} % 16'h0100;
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scratch2 = (opcode & 'h00FF);
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registers[(opcode & 'h0F00) >> 8] = scratch[7:0] & scratch2[7:0];
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registers[(opcode&'h0F00)>>8] = scratch[7:0] & scratch2[7:0];
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end
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'hD???: begin
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$display("HW : INSTR DRW Vx, Vy, nibble");
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@ -185,8 +183,8 @@ module cpu(
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halt = 1;
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end else begin
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halt = 0;
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x_cord = {24'h000000, registers[(opcode & 'h0F00) >> 8]};
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y_cord = {24'h000000, registers[(opcode & 'h00F0) >> 4]};
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x_cord = {24'h000000, registers[(opcode&'h0F00)>>8]};
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y_cord = {24'h000000, registers[(opcode&'h00F0)>>4]};
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x_cord %= 64;
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y_cord %= 32;
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@ -197,16 +195,15 @@ module cpu(
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for (int r = 0; r < size; r++) begin
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for (int c = 0; c < 8; c++) begin
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if (r + y_cord >= 32 || x_cord + c >= 64)
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continue;
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screen_pixel = vram[((r + y_cord) * 64) + (x_cord + c)];
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sprite_pixel = memory[{16'h0000, index_reg} + r] & ('h80 >> c);
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if (r + y_cord >= 32 || x_cord + c >= 64) continue;
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screen_pixel = vram[((r+y_cord)*64)+(x_cord+c)];
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sprite_pixel = memory[{16'h0000, index_reg}+r] & ('h80 >> c);
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if (|sprite_pixel) begin
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if (screen_pixel == 32'hFFFFFFFF) begin
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registers[15] = 1;
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end
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vram[((r + y_cord) * 64) + (x_cord + c)] ^= 32'hFFFFFFFF;
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vram[((r+y_cord)*64)+(x_cord+c)] ^= 32'hFFFFFFFF;
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end
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end
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end
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@ -214,24 +211,26 @@ module cpu(
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end
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'hE?9E: begin
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$display("HW : INSTR SKP Vx");
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if (keyboard[{registers[(opcode & 'h0F00) >> 8]}[3:0]] == 1) begin
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scratch_8 = registers[(opcode&'h0F00)>>8];
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if (keyboard[scratch_8[3:0]] == 1) begin
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program_counter += 2;
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end
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end
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'hE?A1: begin
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$display("HW : INSTR SNE Vx");
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if (keyboard[{registers[(opcode & 'h0F00) >> 8]}[3:0]] != 1) begin
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scratch_8 = registers[(opcode&'h0F00)>>8];
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if (keyboard[scratch_8[3:0]] != 1) begin
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program_counter += 2;
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end
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end
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'hF?07: begin
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$display("HW : INSTR LD Vx, DT");
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registers[(opcode & 'h0F00) >> 8] = delay_timer;
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registers[(opcode&'h0F00)>>8] = delay_timer;
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end
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'hF?0A: begin
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$display("HW : INSTR LD Vx, K");
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halt = 1;
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for(int i = 0; i < 16; i++) begin
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for (int i = 0; i < 16; i++) begin
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if (watch_key == 255) begin
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if (keyboard[i]) begin
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watch_key = i;
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@ -246,31 +245,31 @@ module cpu(
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end
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'hF?15: begin
|
||||
$display("HW : INSTR LD DT, Vx");
|
||||
delay_timer = registers[(opcode & 'h0F00) >> 8];
|
||||
delay_timer = registers[(opcode&'h0F00)>>8];
|
||||
end
|
||||
'hF?18: begin
|
||||
$display("HW : INSTR LD ST, Vx");
|
||||
sound_timer = registers[(opcode & 'h0F00) >> 8];
|
||||
sound_timer = registers[(opcode&'h0F00)>>8];
|
||||
end
|
||||
'hF?1E: begin
|
||||
$display("HW : INSTR ADD I, Vx");
|
||||
index_reg = index_reg + {8'h00, registers[(opcode & 'h0F00) >> 8]};
|
||||
index_reg = index_reg + {8'h00, registers[(opcode&'h0F00)>>8]};
|
||||
end
|
||||
'hF?29: begin
|
||||
$display("HW : INSTR LDL F, Vx");
|
||||
index_reg = registers[(opcode & 'h0F00) >> 8] * 5;
|
||||
index_reg = registers[(opcode&'h0F00)>>8] * 5;
|
||||
end
|
||||
'hF?33: begin
|
||||
$display("HW : INSTR LD B, Vx");
|
||||
scratch = {8'h00, registers[(opcode & 'h0F00) >> 8]};
|
||||
scratch = {8'h00, registers[(opcode&'h0F00)>>8]};
|
||||
scratch2 = scratch % 10;
|
||||
memory[index_reg + 2] = scratch2[7:0];
|
||||
memory[index_reg+2] = scratch2[7:0];
|
||||
scratch /= 10;
|
||||
scratch2 = scratch % 10;
|
||||
memory[index_reg + 1] = scratch2[7:0];
|
||||
memory[index_reg+1] = scratch2[7:0];
|
||||
scratch /= 10;
|
||||
scratch2 = scratch % 10;
|
||||
memory[index_reg + 0] = scratch2[7:0];
|
||||
memory[index_reg+0] = scratch2[7:0];
|
||||
end
|
||||
'hF?55: begin
|
||||
$display("HW : INSTR LD [I], Vx");
|
||||
|
|
@ -293,8 +292,7 @@ module cpu(
|
|||
default: $display("HW : ILLEGAL INSTRUCTION");
|
||||
endcase
|
||||
|
||||
if (!halt)
|
||||
program_counter += 2;
|
||||
if (!halt) program_counter += 2;
|
||||
|
||||
cycle_counter++;
|
||||
end
|
||||
|
|
|
|||
6
gpu.sv
6
gpu.sv
|
|
@ -1,9 +1,9 @@
|
|||
module gpu (
|
||||
input wire [31:0] vram [0:2047]
|
||||
);
|
||||
input wire [31:0] vram[0:2047]
|
||||
);
|
||||
|
||||
import "DPI-C" function void init_screen();
|
||||
import "DPI-C" function void draw_screen(logic [31:0] vram [0:2047]);
|
||||
import "DPI-C" function void draw_screen(logic [31:0] vram[0:2047]);
|
||||
|
||||
initial begin
|
||||
init_screen();
|
||||
|
|
|
|||
|
|
@ -1,12 +1,12 @@
|
|||
module keyboard (
|
||||
input wire clk_in,
|
||||
output bit keyboard [15:0]
|
||||
);
|
||||
output bit keyboard[15:0]
|
||||
);
|
||||
|
||||
import "DPI-C" function bit [7:0] get_key();
|
||||
|
||||
always_ff @(posedge clk_in) begin
|
||||
bit[7:0] keyval = get_key();
|
||||
bit [7:0] keyval = get_key();
|
||||
if (&keyval != 1) begin
|
||||
keyboard[keyval[3:0]] = keyval[7];
|
||||
end
|
||||
|
|
|
|||
6
makefile
6
makefile
|
|
@ -1,3 +1,5 @@
|
|||
.PHONY: run clean format
|
||||
|
||||
SDL_CFLAGS = `sdl2-config --cflags`
|
||||
SDL_LDFLAGS = `sdl2-config --libs`
|
||||
|
||||
|
|
@ -13,4 +15,8 @@ run: build
|
|||
clean:
|
||||
rm -rf obj_dir
|
||||
|
||||
format:
|
||||
verible-verilog-format *.sv --inplace && clang-format *.cpp -i
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
4
rng.sv
4
rng.sv
|
|
@ -1,10 +1,10 @@
|
|||
module rng (
|
||||
input wire clk_in,
|
||||
input wire [15:0] pc,
|
||||
input bit keyboard [15:0],
|
||||
input bit keyboard[15:0],
|
||||
input int cycle_counter,
|
||||
output bit [7:0] rand_bit
|
||||
);
|
||||
);
|
||||
|
||||
bit [7:0] last;
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
module rom_loader (
|
||||
output bit [7:0] memory [0:4095]
|
||||
);
|
||||
output bit [7:0] memory[0:4095]
|
||||
);
|
||||
|
||||
import "DPI-C" function int load_rom();
|
||||
import "DPI-C" function bit [7:0] get_next_instr();
|
||||
|
|
@ -8,9 +8,10 @@ module rom_loader (
|
|||
|
||||
initial begin
|
||||
int rom_size = load_rom();
|
||||
$display("HW : ROM size is %0d bytes (%0d bits) (%0d instructions)", rom_size, rom_size * 8, rom_size / 2);
|
||||
$display("HW : ROM size is %0d bytes (%0d bits) (%0d instructions)", rom_size,
|
||||
rom_size * 8, rom_size / 2);
|
||||
for (int i = 0; i < rom_size; i++) begin
|
||||
memory['h200 + i] = get_next_instr();
|
||||
memory['h200+i] = get_next_instr();
|
||||
end
|
||||
close_rom();
|
||||
$display("HW : ROM loaded successfully");
|
||||
|
|
|
|||
86
yayacemu.cpp
86
yayacemu.cpp
|
|
@ -1,14 +1,14 @@
|
|||
#include "svdpi.h"
|
||||
#include "Vchip8__Dpi.h"
|
||||
#include <iostream>
|
||||
#include <memory.h>
|
||||
#include "Vchip8.h"
|
||||
#include "Vchip8__Dpi.h"
|
||||
#include "svdpi.h"
|
||||
#include "verilated.h"
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_image.h>
|
||||
#include <SDL2/SDL_quit.h>
|
||||
#include <SDL2/SDL_timer.h>
|
||||
#include <inttypes.h>
|
||||
#include <iostream>
|
||||
#include <memory.h>
|
||||
|
||||
#define SCREEN_WIDTH 64
|
||||
#define SCREEN_HEIGHT 32
|
||||
|
|
@ -18,20 +18,19 @@ FILE *rom_file;
|
|||
SDL_Window *window;
|
||||
SDL_Renderer *renderer;
|
||||
SDL_Texture *texture;
|
||||
char* rom_name;
|
||||
char *rom_name;
|
||||
|
||||
void init_screen() {
|
||||
SDL_Init(SDL_INIT_EVERYTHING);
|
||||
window =
|
||||
SDL_CreateWindow("Yet Another Yet Another Chip-8 Emulator", // creates a window
|
||||
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
|
||||
SCREEN_WIDTH * 10, SCREEN_HEIGHT * 10, 0);
|
||||
renderer =
|
||||
SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
|
||||
window = SDL_CreateWindow(
|
||||
"Yet Another Yet Another Chip-8 Emulator", // creates a window
|
||||
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH * 10,
|
||||
SCREEN_HEIGHT * 10, 0);
|
||||
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
|
||||
|
||||
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,
|
||||
SDL_TEXTUREACCESS_STREAMING,
|
||||
SCREEN_WIDTH, SCREEN_HEIGHT);
|
||||
SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH,
|
||||
SCREEN_HEIGHT);
|
||||
std::cout << "INF_EMU: Screen initialized" << '\n';
|
||||
}
|
||||
|
||||
|
|
@ -42,9 +41,9 @@ void set_beep(const svBit beep) {
|
|||
SDL_SetTextureColorMod(texture, 255, 255, 255);
|
||||
}
|
||||
|
||||
void draw_screen(const svLogicVecVal* vram) {
|
||||
uint32_t *screen = (uint32_t*) malloc(SCREEN_WIDTH*SCREEN_HEIGHT*32);
|
||||
for(int i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) {
|
||||
void draw_screen(const svLogicVecVal *vram) {
|
||||
uint32_t *screen = (uint32_t *)malloc(SCREEN_WIDTH * SCREEN_HEIGHT * 32);
|
||||
for (int i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) {
|
||||
screen[i] = vram[i].aval;
|
||||
}
|
||||
SDL_UpdateTexture(texture, NULL, screen, sizeof(screen[0]) * SCREEN_WIDTH);
|
||||
|
|
@ -72,61 +71,56 @@ int load_rom() {
|
|||
return rom_size;
|
||||
}
|
||||
|
||||
svBitVecVal get_next_instr() {
|
||||
return (uint8_t) fgetc(rom_file);
|
||||
}
|
||||
svBitVecVal get_next_instr() { return (uint8_t)fgetc(rom_file); }
|
||||
|
||||
void close_rom() {
|
||||
fclose(rom_file);
|
||||
}
|
||||
void close_rom() { fclose(rom_file); }
|
||||
|
||||
svBitVecVal get_key() {
|
||||
SDL_Event event;
|
||||
uint8_t down = 0;
|
||||
|
||||
while(SDL_PollEvent(&event)) {
|
||||
switch(event.type) {
|
||||
while (SDL_PollEvent(&event)) {
|
||||
switch (event.type) {
|
||||
case SDL_KEYDOWN:
|
||||
down = 128;
|
||||
case SDL_KEYUP:
|
||||
switch(event.key.keysym.sym) {
|
||||
switch (event.key.keysym.sym) {
|
||||
case SDLK_0:
|
||||
return down | (uint8_t) 0;
|
||||
return down | (uint8_t)0;
|
||||
case SDLK_1:
|
||||
return down | (uint8_t) 1;
|
||||
return down | (uint8_t)1;
|
||||
case SDLK_2:
|
||||
return down | (uint8_t) 2;
|
||||
return down | (uint8_t)2;
|
||||
case SDLK_3:
|
||||
return down | (uint8_t) 3;
|
||||
return down | (uint8_t)3;
|
||||
case SDLK_4:
|
||||
return down | (uint8_t) 4;
|
||||
return down | (uint8_t)4;
|
||||
case SDLK_5:
|
||||
return down | (uint8_t) 5;
|
||||
return down | (uint8_t)5;
|
||||
case SDLK_6:
|
||||
return down | (uint8_t) 6;
|
||||
return down | (uint8_t)6;
|
||||
case SDLK_7:
|
||||
return down | (uint8_t) 7;
|
||||
return down | (uint8_t)7;
|
||||
case SDLK_8:
|
||||
return down | (uint8_t) 8;
|
||||
return down | (uint8_t)8;
|
||||
case SDLK_9:
|
||||
return down | (uint8_t) 9;
|
||||
return down | (uint8_t)9;
|
||||
case SDLK_a:
|
||||
return down | (uint8_t) 10;
|
||||
return down | (uint8_t)10;
|
||||
case SDLK_b:
|
||||
return down | (uint8_t) 11;
|
||||
return down | (uint8_t)11;
|
||||
case SDLK_c:
|
||||
return down | (uint8_t) 12;
|
||||
return down | (uint8_t)12;
|
||||
case SDLK_d:
|
||||
return down | (uint8_t) 13;
|
||||
return down | (uint8_t)13;
|
||||
case SDLK_e:
|
||||
return down | (uint8_t) 14;
|
||||
return down | (uint8_t)14;
|
||||
case SDLK_f:
|
||||
return down | (uint8_t) 15;
|
||||
return down | (uint8_t)15;
|
||||
default:
|
||||
return 255;
|
||||
}
|
||||
|
||||
|
||||
default:
|
||||
return 255;
|
||||
}
|
||||
|
|
@ -134,7 +128,7 @@ svBitVecVal get_key() {
|
|||
return 255;
|
||||
}
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
int main(int argc, char **argv) {
|
||||
if (argc < 2) {
|
||||
std::cout << "Use: yayacemu [ROM_NAME]" << '\n';
|
||||
exit(1);
|
||||
|
|
@ -142,15 +136,15 @@ int main(int argc, char** argv) {
|
|||
|
||||
rom_name = argv[1];
|
||||
|
||||
VerilatedContext* contextp = new VerilatedContext;
|
||||
VerilatedContext *contextp = new VerilatedContext;
|
||||
contextp->commandArgs(argc, argv);
|
||||
|
||||
Vchip8* dut = new Vchip8{contextp};
|
||||
Vchip8 *dut = new Vchip8{contextp};
|
||||
|
||||
while (true) {
|
||||
dut->clk_in ^= 1;
|
||||
dut->eval();
|
||||
usleep(1000000/EMULATION_HZ);
|
||||
usleep(1000000 / EMULATION_HZ);
|
||||
if (SDL_QuitRequested()) {
|
||||
std::cout << "INF_EMU: Received Quit from SDL. Goodbye!" << '\n';
|
||||
break;
|
||||
|
|
|
|||
Loading…
Reference in a new issue