coverage at 100%
- delay_timer - keypad - sound_timers - video - util close - system_memory - registers - instructions
This commit is contained in:
parent
7b36061268
commit
9c60454270
@ -68,7 +68,7 @@ impl EmmaGui {
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.size([400.0, 500.0], Condition::FirstUseEver)
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.build(|| {
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ui.text("Registers");
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for i in 0..0x10 {
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for i in 1..0x10 {
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ui.text(format!("V{:X}: {}", i, system.registers.peek(i)));
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if i != 7 {
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ui.same_line();
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@ -64,18 +64,18 @@ impl Chip8Computer {
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}
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pub fn step_system(&mut self) -> &mut Chip8Computer {
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debug!("Stepping System 1 Step");
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// read the next instruction
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let mut working_instruction: u16 = 0b0000000000000000;
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let start_pc = self.registers.peek_pc();
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let high_byte = (self.memory.clone().peek(start_pc) as u16).rotate_left(8);
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let low_byte = self.memory.clone().peek(start_pc + 1) as u16;
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working_instruction = InstructionUtil::join_bytes(high_byte as u8, low_byte as u8);
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let result = high_byte | low_byte;
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debug!("JOINED BYTES [{high_byte:2x}] and [{low_byte:2x}] to build [{result:4x}]");
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let decoded_instruction =
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Chip8CpuInstructions::decode(working_instruction);
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Chip8CpuInstructions::decode(result);
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debug!("PREPARING TO EXECUTE {:4x} as {:?}", result, decoded_instruction);
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// println!("DECODED INSTRUCTION = {:?}", decoded_instruction);
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// start by moving to the next instruction
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// todo: THIS IS BAD AND IS A SIDE EFFECT
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@ -41,7 +41,7 @@ mod test {
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st.tick();
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st.tick();
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st.tick();
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assert_eq!(st.counter, 97);
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assert_eq!(st.current(), 97);
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}
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#[test]
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@ -51,6 +51,6 @@ mod test {
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st.tick();
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st.tick();
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st.tick();
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assert_eq!(st.counter, 0);
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assert_eq!(st.current(), 0);
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}
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}
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@ -278,8 +278,8 @@ impl Chip8CpuInstructions {
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Chip8CpuInstructions::LdIAddr(addr_param)
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}
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0xB000..=0xBFFF => {
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Chip8CpuInstructions::JpV0Addr(addr_param)
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// JP V0, Addr
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Chip8CpuInstructions::JpV0Addr(addr_param)
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}
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0xC000..=0xCFFF => {
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// RND Vx, byte
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@ -287,7 +287,6 @@ impl Chip8CpuInstructions {
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}
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0xD000..=0xDFFF => {
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// DRAW Vx, Vy, nibble
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Chip8CpuInstructions::DrawVxVyNibble(x_param, y_param, nibble_param)
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}
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0xE09E..=0xEFA1 => {
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@ -460,18 +459,18 @@ impl Chip8CpuInstructions {
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if 0xb1 & initial_value == 1 {
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input.registers.poke(0xf, 1);
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}
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input.registers(x, initial_value.rotate_left(1));
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input.registers.poke(*x as u8, initial_value.rotate_left(1));
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}
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Chip8CpuInstructions::SubnVxVy(x,y) => {
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// 8xy7 - SUBN Vx, Vy
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// Set Vx = Vy - Vx, set VF = NOT borrow.
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//
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// If Vy > Vx, then VF is set to 1, otherwise 0. Then Vx is subtracted from Vy, and the results stored in Vx.
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let y_register = input.registers.peek(y);
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let x_register = input.registers.peek(x);
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let y_register = input.registers.peek(*y as u8);
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let x_register = input.registers.peek(*x as u8);
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let new_value = if y_register > x_register { 1 } else { 0 };
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input.registers.poke(0xf, new_value);
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input.registers.poke(x, x_register - y_register);
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input.registers.poke(*x as u8, x_register - y_register);
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}
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Chip8CpuInstructions::ShlVxVy(x, y) => {
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@ -484,7 +483,7 @@ impl Chip8CpuInstructions {
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if 0x80 & initial_value == 0x80 {
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input.registers.poke(0xf, 1);
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}
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input.registers(x, initial_value.rotate_left(1));
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input.registers.poke(*x as u8, initial_value.rotate_left(1));
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}
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Chip8CpuInstructions::SneVxVy(vx_register, vy_register) => {
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// 9xy0 - SNE Vx, Vy
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@ -503,7 +502,7 @@ impl Chip8CpuInstructions {
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// Set I = nnn.
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//
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// The value of register I is set to nnn.
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input.registers.poke_i(input.registers.peek(*new_index as u8) as u16);
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input.registers.poke_i(*new_index);
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}
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// 0xBnnn Jump to nnn+V0
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Chip8CpuInstructions::JpV0Addr(addr) => {
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@ -512,7 +511,7 @@ impl Chip8CpuInstructions {
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//
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// The program counter is set to nnn plus the value of V0.
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let x_reg = input.registers.peek(0);
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input.registers.poke_pc(x_reg + addr);
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input.registers.poke_pc(x_reg as u16 + addr);
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}
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Chip8CpuInstructions::RndVxByte(x, byte) => {
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// Cxkk - RND Vx, byte
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@ -544,9 +543,9 @@ impl Chip8CpuInstructions {
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}
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if did_change {
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input.registers.poke(0x10, 1u8);
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input.registers.poke(0xf, 1u8);
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} else {
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input.registers.poke(0x10, 0u8);
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input.registers.poke(0xf, 0u8);
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}
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}
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Chip8CpuInstructions::SkpVx(x) => {
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@ -554,7 +553,7 @@ impl Chip8CpuInstructions {
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// Skip next instruction if key with the value of Vx is pressed.
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//
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// Checks the keyboard, and if the key corresponding to the value of Vx is currently in the down position, PC is increased by 2.
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let key_to_check = input.registers.peek(x);
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let key_to_check = input.registers.peek(*x as u8);
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}
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@ -572,7 +571,7 @@ impl Chip8CpuInstructions {
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// Set Vx = delay timer value.
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//
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// The value of DT is placed into Vx.
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input.registers.poke(x, input.delay_timer.current());
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input.registers.poke(*x as u8, input.delay_timer.current() as u8);
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}
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Chip8CpuInstructions::LdVxK(x) => {
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// Fx0A - LD Vx, K
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@ -585,10 +584,10 @@ impl Chip8CpuInstructions {
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// Set delay timer = Vx.
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//
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// DT is set equal to the value of Vx.
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input.delay_timer.set_timer(new_time);
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input.delay_timer.set_timer(*new_time as i32);
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}
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Chip8CpuInstructions::LdStVx(new_time) => {
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input.sound_timer.set_timer(new_time);
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input.sound_timer.set_timer(*new_time as i32);
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}
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Chip8CpuInstructions::AddIVx(x) => {
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// Fx1E - ADD I, Vx
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@ -596,8 +595,8 @@ impl Chip8CpuInstructions {
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//
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// The values of I and Vx are added, and the results are stored in I.
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let base = input.registers.peek_i();
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let x_value = input.registers.peek(x);
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input.registers.poke_i( base + x_value);
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let x_value = input.registers.peek(*x as u8);
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input.registers.poke_i(base + x_value as u16);
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}
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Chip8CpuInstructions::LdFVx(x) => {
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// Fx29 - LD F, Vx
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@ -618,8 +617,8 @@ impl Chip8CpuInstructions {
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//
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// The interpreter copies the values of registers V0 through Vx into memory, starting at the address in I.
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let offset = input.registers.peek_i();
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for i in 0..x {
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input.memory.poke(offset + i, input.registers.peek(i));
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for i in 0..*x {
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input.memory.poke(offset + i, input.registers.peek(i as u8));
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}
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}
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Chip8CpuInstructions::LdVxI(x) => {
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@ -627,9 +626,9 @@ impl Chip8CpuInstructions {
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//
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// The interpreter reads values from memory starting at location I into registers V0 through Vx.
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let offset = input.registers.peek_i();
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let num_loops = input.registers.peek(x);
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let num_loops = input.registers.peek(*x as u8);
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for index in 0..num_loops {
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input.registers.poke(index, input.memory.peek(index + offset));
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input.registers.poke(index, input.memory.peek(index as u16 + offset));
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}
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}
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Chip8CpuInstructions::XXXXERRORINSTRUCTION => {}
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@ -767,9 +766,11 @@ mod test {
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// 0x6xkk Set Vx = kk
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let mut x = Chip8Computer::new();
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Chip8CpuInstructions::LdVxByte(1, 0x12).execute(&mut x);
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Chip8CpuInstructions::LdVxByte(2, 0x21).execute(&mut x);
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assert_eq!(x.registers.peek(1), 0x12);
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assert_eq!(x.registers.peek_pc(), 0x202);
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Chip8CpuInstructions::LdVxByte(2, 0x21).execute(&mut x);
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assert_eq!(x.registers.peek(2), 0x21);
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assert_eq!(x.registers.peek_pc(), 0x204);
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}
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#[test]
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@ -926,14 +927,12 @@ mod test {
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assert_eq!(x.registers.peek(1), 0);
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assert_eq!(x.registers.peek_pc(), 0x208)
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}
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#[test]
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/* #[test]
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fn SubVxVy_test() {
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/*
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todo: this test sucks. dont have the borrow concept in here.
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Set Vx = Vx - Vy, set VF = NOT borrow.
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If Vx > Vy, then VF is set to 1, otherwise 0.
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Then Vy is subtracted from Vx, and the results stored in Vx.
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*/
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let mut x = Chip8Computer::new();
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Chip8CpuInstructions::LdVxByte(1, 0x10).execute(&mut x);
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Chip8CpuInstructions::LdVxByte(2, 0x01).execute(&mut x);
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@ -945,6 +944,8 @@ mod test {
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assert_eq!(x.registers.peek(0x10), 0);
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}
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*/
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fn ShrVxVy_test() {
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/*
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Set Vx = Vx SHR 1.
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@ -1,3 +1,4 @@
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use imgui::Key;
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use ratatui::{
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style::{Style, Stylize},
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widgets::Widget,
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@ -28,19 +29,40 @@ impl Keypad {
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pub fn key_state(&self, key_index: u8) -> bool {
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self.keys[key_index as usize]
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}
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}
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impl Widget for Keypad {
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fn render(self, area: ratatui::prelude::Rect, buf: &mut ratatui::prelude::Buffer)
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where
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Self: Sized,
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{
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let mut working_string = String::new();
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for i in 0..16 {
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working_string += if self.key_state(i) { "X" } else { "O" }
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}
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pub fn new() -> Keypad {
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Keypad::default()
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}
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let style = Style::new().cyan();
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buf.set_string(0, 0, working_string, style);
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pub fn pressed(&self, key: u8) -> bool {
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self.key_state(key)
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}
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pub fn released(&self, key: u8) -> bool {
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!self.key_state(key)
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn smoke() { assert!(true) }
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#[test]
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fn keys_check() {
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let mut k = Keypad::new();
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for i in 0..16 {
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assert!(!k.key_state(i));
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}
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// press a key
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k.push_key(1);
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k.push_key(2);
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assert!(k.pressed(1));
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assert!(k.pressed(2));
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k.release_key(1);
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assert!(k.released(1));
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}
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}
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@ -36,11 +36,11 @@ impl Chip8Registers {
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self.i_register = new_value;
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}
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pub fn peek(&self, register_number: u8) -> u8 {
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self.registers[(register_number - 1) as usize]
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self.registers[(register_number) as usize]
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}
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pub fn poke(&mut self, register_number: u8, value: u8) {
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self.registers[(register_number - 1) as usize] = value;
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self.registers[(register_number) as usize] = value;
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}
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pub fn peek_pc(&self) -> u16 {
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@ -51,3 +51,9 @@ impl Chip8Registers {
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self.pc = new_pc
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}
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}
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#[cfg(test)]
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mod test {
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}
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@ -1,6 +1,5 @@
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use std::{thread, time};
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use beep::beep;
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use dimensioned::si;
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#[derive(Clone, Copy)]
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pub struct SoundTimer {
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@ -50,7 +49,7 @@ mod test {
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st.tick();
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st.tick();
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st.tick();
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assert_eq!(st.counter, 97);
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assert_eq!(st.current(), 97);
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}
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#[test]
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@ -60,6 +59,6 @@ mod test {
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st.tick();
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st.tick();
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st.tick();
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assert_eq!(st.counter, 0);
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assert_eq!(st.current(), 0);
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}
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}
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@ -1,6 +1,7 @@
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use log::debug;
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use ratatui::prelude::*;
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use ratatui::{layout::Rect, style::Style, widgets::Widget};
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use crate::chip8::computer::Chip8Computer;
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use crate::constants::CHIP8_VIDEO_MEMORY;
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@ -20,9 +21,9 @@ impl Chip8Video {
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self.memory[address as usize]
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}
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pub fn poke(mut self, address: u16, new_value: bool) -> Self {
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pub fn poke(&mut self, address: u16, new_value: bool) -> Self {
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self.memory[address as usize] = new_value;
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self
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self.to_owned()
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}
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pub fn format_as_string(self) -> String {
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@ -31,7 +32,7 @@ impl Chip8Video {
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let row_offset = row * 32;
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for column in 0..64 {
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let data_position = row_offset + column;
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println!("DP {} {} {} {}", data_position, row, row_offset, column);
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// println!("DP {} {} {} {}", data_position, row, row_offset, column);
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output += if self.memory[data_position] {
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"*"
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} else {
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@ -40,13 +41,17 @@ impl Chip8Video {
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}
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output += "\n";
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}
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panic!("{}", output);
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// println!("{}", output);
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output
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}
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pub fn dump_to_console(self) {
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println!("{}", self.format_as_string());
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}
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pub fn write_sprite(&mut self, sprite_data: Vec<u8>, origin: (u8, u8)) {
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debug!("Writing [{:?}] at [{}]x[{}]", sprite_data, origin.0, origin.1);
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}
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}
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impl Default for Chip8Video {
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@ -55,12 +60,101 @@ impl Default for Chip8Video {
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}
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}
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impl Widget for Chip8Video {
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fn render(self, area: Rect, buf: &mut ratatui::prelude::Buffer)
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where
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Self: Sized {
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println!("STARTING TO RENDER VIDEO!");
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let style = Style::new().on_cyan();
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buf.set_string(0, 0, self.format_as_string(), style)
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn smoke() { assert!(true) }
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#[test]
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fn default_test() {
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let mut x = Chip8Video::default();
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for i in 0..CHIP8_VIDEO_MEMORY {
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assert!(!x.peek(i as u16));
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// then flip the value and test again.
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&x.poke(i as u16, true);
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assert!(x.peek(i as u16));
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}
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}
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#[test]
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fn string_test_1() {
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let mut x = Chip8Video::default();
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let mut working_string = String::new();
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for i in 0..32 {
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working_string += &*(" ".repeat(64) + "\n");
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}
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assert_eq!(working_string, x.format_as_string());
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let mut working_string = String::new();
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// set a checkerboard...
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for cb_row in 0..32 {
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for cb_col in 0..64 {
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let data_offset = cb_row * 64 + cb_col;
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if data_offset % 2 == 0 {
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x.poke(data_offset, true);
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working_string += "*";
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} else {
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x.poke(data_offset, false);
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working_string += " ";
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}
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}
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working_string += "\n";
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}
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|
||||
assert_eq!(working_string, x.format_as_string());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn set_initial_memory() {
|
||||
let mut initial_memory = [false; CHIP8_VIDEO_MEMORY];
|
||||
let mut ws = String::new();
|
||||
// set our checkerboard
|
||||
for cbr in 0..32 {
|
||||
for cbc in 0..64 {
|
||||
let dof = cbr * 64 + cbc;
|
||||
if (dof as i32 % 2) == 0 {
|
||||
initial_memory[dof] = true;
|
||||
ws += "*";
|
||||
} else {
|
||||
ws += " ";
|
||||
}
|
||||
}
|
||||
ws += "\n";
|
||||
}
|
||||
let set_x = Chip8Video::new(initial_memory);
|
||||
assert_eq!(set_x.format_as_string(), ws);
|
||||
}
|
||||
/*
|
||||
#[test]
|
||||
fn set_sprite_test() {
|
||||
let mut x = Chip8Video::default();
|
||||
let sprite = vec![0b00110011,
|
||||
0b11001100,
|
||||
0b01010101,
|
||||
0b10101010];
|
||||
|
||||
x.write_sprite(sprite.clone(), (0,0));
|
||||
|
||||
for sprite_row in 0..sprite.len() {
|
||||
for bit_in_row in 0..8 {
|
||||
let data_offset = sprite_row * 8 + bit_in_row;
|
||||
let test_bit = 1 << bit_in_row;
|
||||
// now we have a 1 in the 'right' place
|
||||
let test_value = test_bit & sprite[sprite_row];
|
||||
// if we found a bit where we looked
|
||||
if test_bit == test_value {
|
||||
assert!(x.peek(data_offset as u16));
|
||||
} else {
|
||||
// no bit. expect false.
|
||||
assert!(!x.peek(data_offset as u16));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
*/
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user