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Very messy but we're running on the web now! (not in this crate, but will add web-sys to georgeemu bin in a bit)

This commit is contained in:
august kline 2024-09-01 23:13:06 -04:00
parent c2aef4f249
commit 8ac0cbc57b
16 changed files with 787 additions and 684 deletions
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Cargo.lock generated
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version = "0.48.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
[[package]] [[package]]
name = "windows_x86_64_msvc" name = "windows_x86_64_msvc"
version = "0.52.5" version = "0.52.5"

26
Cargo.toml
View File

@ -3,15 +3,29 @@ name = "georgeemu"
version = "0.1.0" version = "0.1.0"
edition = "2021" edition = "2021"
[features]
debug = []
term = []
web = ["minifb/web"]
[[bin]]
path = "src/bin/main.rs"
name = "georgeemu"
[target.'cfg(target_arch = "wasm32")'.lib]
crate-type = ["cdylib", "rlib"]
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies] [dependencies]
anyhow = "1.0.81" anyhow = "1.0.81"
bdf = "0.6.0" console_error_panic_hook = "0.1.7"
crossterm = "0.27.0" # minifb = { git = "https://github.com/augustkline/rust_minifb" }
minifb = "0.27.0" minifb = { path = "/Users/august/projects/rust_minifb_fork/" }
# minifb = "0.25.0"
# ratatui = "0.26.3"
serde = { version = "1.0.197", features = ["serde_derive", "derive"] } serde = { version = "1.0.197", features = ["serde_derive", "derive"] }
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
termion = "4.0.2" termion = "4.0.2"
toml = "0.8.12" toml = { version = "0.8.12" }

2
george.toml
View File

@ -1,3 +1,3 @@
char_rom = "./src/roms/cozette.rom" char_rom = "./src/roms/cozette.rom"
rom = "./src/roms/george.rom" rom = "./src/roms/demo.rom"
screen = "Window" screen = "Window"

2
run.sh
View File

@ -8,5 +8,5 @@ fi
set -e set -e
vasm6502_oldstyle ./src/roms/$1.asm -dotdir -wdc02 -ldots -Fbin -o ./src/roms/$1.rom; vasm6502_oldstyle ./src/roms/$1.asm -dotdir -wdc02 -ldots -Fbin -o ./src/roms/$1.rom;
cargo run -- rom "./src/roms/$1.rom"; cargo run --features debug -- rom "./src/roms/$1.rom";
# hexdump -C ./cpu_dump.bin; # hexdump -C ./cpu_dump.bin;

14
src/cli.rs → src/bin/cli/mod.rs
View File

@ -1,14 +1,13 @@
use std::{ use std::{
env, default, env,
fs::File, fs::File,
io::{ErrorKind, Read}, io::{ErrorKind, Read},
process::exit, process::exit,
}; };
use georgeemu::{Config, ScreenType};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
use crate::video::ScreenType;
#[derive(Serialize, Deserialize, Debug)] #[derive(Serialize, Deserialize, Debug)]
struct ConfigBuilder { struct ConfigBuilder {
rom: Option<String>, rom: Option<String>,
@ -27,7 +26,7 @@ impl ConfigBuilder {
fn build(self) -> Config { fn build(self) -> Config {
let rom = match self.rom { let rom = match self.rom {
Some(rom) => rom, Some(rom) => Some(rom),
None => { None => {
println!("no rom was provided :("); println!("no rom was provided :(");
exit(1); exit(1);
@ -44,12 +43,6 @@ impl ConfigBuilder {
} }
} }
pub struct Config {
pub rom: String,
pub screen: ScreenType,
pub char_rom: Option<String>,
}
fn help(command: Option<String>) { fn help(command: Option<String>) {
let executable: String = env::args().next().unwrap(); let executable: String = env::args().next().unwrap();
if let Some(command) = command { if let Some(command) = command {
@ -101,6 +94,7 @@ pub fn get_input() -> Config {
} }
Err(_) => { Err(_) => {
println!("couldn't find a `george.toml` in the current directory!"); println!("couldn't find a `george.toml` in the current directory!");
println!("\nuse `{executable} --help` to see all config options");
exit(1); exit(1);
} }
}; };

33
src/bin/main.rs Normal file
View File

@ -0,0 +1,33 @@
mod cli;
use cli::get_input;
use georgeemu::GeorgeEmu;
use minifb::{Scale, ScaleMode, Window, WindowOptions};
fn main() {
let mut window = Window::new(
"ʕ·ᴥ·ʔ-☆",
512,
380,
WindowOptions {
resize: true,
borderless: true,
title: true,
transparency: false,
scale: Scale::FitScreen,
scale_mode: ScaleMode::AspectRatioStretch,
topmost: false,
none: true,
},
)
.unwrap();
let config = get_input();
#[cfg(not(feature = "term"))]
let mut emu = GeorgeEmu::builder()
.window(&mut window)
.rom("/Users/august/projects/george-emu/src/roms/demo.rom")
.build();
#[cfg(feature = "term")]
let mut emu = GeorgeEmu::builder().build();
emu.run();
}

80
src/cpu.rs
View File

@ -5,8 +5,6 @@ use std::sync::mpsc::{channel, Receiver, Sender};
use std::thread::sleep; use std::thread::sleep;
use std::time::Duration; use std::time::Duration;
use termion::cursor::Goto;
#[derive(Clone, Copy)] #[derive(Clone, Copy)]
pub enum StatusFlag { pub enum StatusFlag {
Negative = 0b1000_0000, Negative = 0b1000_0000,
@ -19,7 +17,7 @@ pub enum StatusFlag {
Carry = 0b0000_0001, Carry = 0b0000_0001,
} }
#[derive(Clone)] #[derive(Clone, Debug)]
pub struct CpuController(Sender<CpuControl>); pub struct CpuController(Sender<CpuControl>);
pub enum CpuControl { pub enum CpuControl {
@ -51,6 +49,7 @@ impl CpuController {
} }
} }
#[derive(Debug)]
pub struct CpuReceiver(Receiver<CpuControl>); pub struct CpuReceiver(Receiver<CpuControl>);
impl CpuReceiver { impl CpuReceiver {
pub fn new(receiver: Receiver<CpuControl>) -> Self { pub fn new(receiver: Receiver<CpuControl>) -> Self {
@ -58,6 +57,7 @@ impl CpuReceiver {
} }
} }
#[derive(Debug)]
pub struct Cpu { pub struct Cpu {
pub a: u8, // Accumulator Register pub a: u8, // Accumulator Register
pub x: u8, // X Register pub x: u8, // X Register
@ -71,8 +71,7 @@ pub struct Cpu {
pub pending_cycles: usize, pub pending_cycles: usize,
receiver: Option<CpuReceiver>, receiver: Option<CpuReceiver>,
stopped: bool, stopped: bool,
cycle: bool, // cycle_count: usize, cycle: bool,
// state_tx: Sender<CpuState>,
} }
impl Display for Cpu { impl Display for Cpu {
@ -94,7 +93,6 @@ impl MemoryWriter for Cpu {
impl Cpu { impl Cpu {
pub fn new(memory: MemHandle) -> Self { pub fn new(memory: MemHandle) -> Self {
// pub fn new(memory: MemHandle) -> Self {
Cpu { Cpu {
a: 0x00, a: 0x00,
x: 0x00, x: 0x00,
@ -179,13 +177,6 @@ impl Cpu {
value & 0b1000_0000 == 0b1000_0000 value & 0b1000_0000 == 0b1000_0000
} }
// pub fn execute(&mut self) {
// self.cycle();
// while self.pending_cycles != 0 {
// self.cycle();
// }
// }
pub fn wait_for_interrupt(&self) { pub fn wait_for_interrupt(&self) {
unimplemented!() unimplemented!()
} }
@ -198,6 +189,10 @@ impl Cpu {
self.pc = self.read_word(0xFFFE); self.pc = self.read_word(0xFFFE);
} }
pub fn toggle_stopped(&mut self) {
self.stopped = !self.stopped;
}
fn receive_control(&mut self) { fn receive_control(&mut self) {
match &self.receiver { match &self.receiver {
Some(receiver) => { Some(receiver) => {
@ -213,7 +208,8 @@ impl Cpu {
self.stopped = !self.stopped; self.stopped = !self.stopped;
} }
CpuControl::Cycle => self.cycle = true, CpuControl::Cycle => self.cycle = true,
CpuControl::Data => {} // self CpuControl::Data => {
// self
// .state_tx // .state_tx
// .send(CpuState { // .send(CpuState {
// a: self.a.clone(), // Accumulator Register // a: self.a.clone(), // Accumulator Register
@ -228,69 +224,39 @@ impl Cpu {
// .unwrap(), // .unwrap(),
} }
} }
}
None => {} None => {}
} }
} }
pub fn cycle(&mut self) { pub fn cycle(&mut self) {
self.receive_control(); // self.receive_control();
if self.stopped & !self.cycle { // if self.stopped & !self.cycle {
self.set_flag(StatusFlag::IrqDisable, true); // self.set_flag(StatusFlag::IrqDisable, true);
return; // return;
} // }
self.cycle = false; // self.cycle = false;
#[cfg(not(target_arch = "wasm32"))]
while self.pending_cycles != 0 { while self.pending_cycles != 0 {
// roughly cycle-accurate timing // roughly cycle-accurate timing
sleep(Duration::from_nanos(500)); sleep(Duration::from_nanos(500));
self.pending_cycles -= 1; self.pending_cycles -= 1;
} }
if !self.get_flag(StatusFlag::IrqDisable) && self.irq { // if !self.get_flag(StatusFlag::IrqDisable) && self.irq {
self.interrupt(); // self.interrupt();
} // }
let opcode = self.read(self.pc); let opcode = self.read(self.pc);
let instruction = get_instruction(opcode); let instruction = get_instruction(opcode);
instruction.call(self); instruction.call(self);
// println!("a: {a:#04x}, x: {x:#04x}, y: {y:#04x}, pc: {pc:#06x}, sp: {s:#04x}, sr: {p:#010b}, irq: {irq:?}, nmi: {nmi:?}", a = self.a, x = self.x, y = self.y, pc = self.pc, s = self.s, p = self.p, irq = self.irq, nmi = self.nmi);
// println!(
// "Instruction: {:?}, {:#04x}",
// valid_instruction.opcode, opcode
// );
// println!("");
} }
pub fn stop(&mut self) { pub fn stop(&mut self) {
self.stopped = true; self.stopped = true;
} }
#[cfg(feature = "debug")]
pub fn breakpoint(&mut self) { pub fn breakpoint(&mut self) {
// println!("a: {a:#04x}, x: {x:#04x}, y: {y:#04x}, pc: {pc:#06x}, sp: {s:#04x}, sr: {p:#010b}, irq: {irq:?}, nmi: {nmi:?}", a = self.a, x = self.x, y = self.y, pc = self.pc, s = self.s, p = self.p, irq = self.irq, nmi = self.nmi);
// println!(
// "Instruction: {:?}, {:#04x}",
// valid_instruction.opcode, opcode
// );
// println!("");
// println!(
// "{}{:#04x}: {:#02x}, {:#04x}: {:#02x}",
// Goto(1, 35),
// 0x20,
// self.read(0x20),
// 0x21,
// self.read(0x21)
// );
// println!(
// "{}str_ptr {:#04x}: {:#02x}, {:#04x}: {:#02x}",
// Goto(1, 36),
// 0x30,
// self.read(0x30),
// 0x31,
// self.read(0x31)
// );
// println!(
// "{}cursor - x: {:#02x}, y: {:#02x}",
// Goto(1, 37),
// self.read(0x300),
// self.read(0x301)
// );
self.stop(); self.stop();
} }
} }

292
src/instructions.rs
View File

@ -1,10 +1,7 @@
#![allow(clippy::upper_case_acronyms)] #![allow(clippy::upper_case_acronyms)]
use core::panic; #[cfg(feature = "debug")]
use std::process::exit; use termion::{clear, color, cursor::Goto};
use termion::cursor::Goto;
use termion::{clear, color};
use crate::cpu::{Cpu, StatusFlag}; use crate::cpu::{Cpu, StatusFlag};
use crate::memory::{MemoryReader, MemoryWriter}; use crate::memory::{MemoryReader, MemoryWriter};
@ -23,47 +20,12 @@ pub struct Instruction<'a> {
impl Instruction<'_> { impl Instruction<'_> {
pub fn call(&self, cpu: &mut Cpu) { pub fn call(&self, cpu: &mut Cpu) {
// TODO: add flag to print these #[cfg(feature = "debug")]
// print!("{}{}a: {a:#04x}, x: {x:#04x}, y: {y:#04x}, pc: {pc:#06x}, sp: {s:#04x}, sr: {p:#010b}, irq: {irq:?}, nmi: {nmi:?}", Goto(0, 31),clear::UntilNewline, a = cpu.a, x = cpu.x, y = cpu.y, pc = cpu.pc, s = cpu.s, p = cpu.p, irq = cpu.irq, nmi = cpu.nmi); self.debug(cpu);
// print!(
// "{}instruction: {:?}, pc: {:#04x}",
// Goto(0, 31),
// self.name,
// cpu.pc
// );
// print!(
// "{}{}instruction: {:?}, mode: {:?}",
// Goto(0, 32),
// clear::UntilNewline,
// self.name,
// self.addr_mode
// );
// print!(
// "{}{:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {}{}{:02x}{}{} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}",
// Goto(0, 33),
// cpu.read(cpu.pc.wrapping_sub(8)),
// cpu.read(cpu.pc.wrapping_sub(7)),
// cpu.read(cpu.pc.wrapping_sub(6)),
// cpu.read(cpu.pc.wrapping_sub(5)),
// cpu.read(cpu.pc.wrapping_sub(4)),
// cpu.read(cpu.pc.wrapping_sub(3)),
// cpu.read(cpu.pc.wrapping_sub(2)),
// cpu.read(cpu.pc.wrapping_sub(1)),
// color::Bg(color::Rgb(0xFF, 0xCC, 0x00)),
// color::Fg(color::Rgb(0x11, 0x05, 0x00)),
// cpu.read(cpu.pc),
// color::Fg(color::Rgb(0xFF, 0xCC, 0x00)),
// color::Bg(color::Rgb(0x11, 0x05, 0x00)),
// cpu.read(cpu.pc.wrapping_add(1)),
// cpu.read(cpu.pc.wrapping_add(2)),
// cpu.read(cpu.pc.wrapping_add(3)),
// cpu.read(cpu.pc.wrapping_add(4)),
// cpu.read(cpu.pc.wrapping_add(5)),
// cpu.read(cpu.pc.wrapping_add(6)),
// cpu.read(cpu.pc.wrapping_add(7)),
// cpu.read(cpu.pc.wrapping_add(8)),
// );
cpu.pc = cpu.pc.wrapping_add(1); // read instruction byte cpu.pc = cpu.pc.wrapping_add(1); // read instruction byte
#[allow(clippy::single_match)]
match self.instr_fn { match self.instr_fn {
// existence of instr_fn means this is a valid instruction // existence of instr_fn means this is a valid instruction
Some(instr_fn) => { Some(instr_fn) => {
@ -82,18 +44,76 @@ impl Instruction<'_> {
} }
} }
None => { None => {
panic!( #[cfg(feature = "debug")]
"An invalid instruction was called at {:04x}, with opcode {:02x}", {
println!(
"{}An invalid instruction was called at {:04x}, with opcode {:02x}",
Goto(0, 35),
cpu.pc, cpu.pc,
cpu.read(cpu.pc) cpu.read(cpu.pc)
) );
} // idk if we should panic here, if we don't it's undefined behavior, which cpu.breakpoint();
// might actually be what we want in the cases where it's an undocumented
// 6502 instruction, but otherwise we should panic prolly, for now i'm just
// gonna panic
} }
} }
} }
}
#[cfg(feature = "debug")]
fn debug(&self, cpu: &Cpu) {
// cpu state
print!("{}{}a: {a:#04x}, x: {x:#04x}, y: {y:#04x}, pc: {pc:#06x}, sp: {s:#04x}, sr: {p:#010b}, irq: {irq:?}, nmi: {nmi:?}", Goto(0, 31),clear::UntilNewline, a = cpu.a, x = cpu.x, y = cpu.y, pc = cpu.pc, s = cpu.s, p = cpu.p, irq = cpu.irq, nmi = cpu.nmi);
print!(
"{}instruction: {:?}, pc: {:#04x}",
Goto(0, 31),
self.name,
cpu.pc
);
// current instruction and addressing mode
print!(
"{}{}instruction: {:?}, mode: {:?}",
Goto(0, 32),
clear::UntilNewline,
self.name,
self.addr_mode
);
// local memory
print!(
"{}{:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {}{}{:02x}{}{} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}",
Goto(0, 33),
cpu.read(cpu.pc.wrapping_sub(8)),
cpu.read(cpu.pc.wrapping_sub(7)),
cpu.read(cpu.pc.wrapping_sub(6)),
cpu.read(cpu.pc.wrapping_sub(5)),
cpu.read(cpu.pc.wrapping_sub(4)),
cpu.read(cpu.pc.wrapping_sub(3)),
cpu.read(cpu.pc.wrapping_sub(2)),
cpu.read(cpu.pc.wrapping_sub(1)),
color::Bg(color::Rgb(0xFF, 0xCC, 0x00)),
color::Fg(color::Rgb(0x11, 0x05, 0x00)),
cpu.read(cpu.pc),
color::Fg(color::Rgb(0xFF, 0xCC, 0x00)),
color::Bg(color::Rgb(0x11, 0x05, 0x00)),
cpu.read(cpu.pc.wrapping_add(1)),
cpu.read(cpu.pc.wrapping_add(2)),
cpu.read(cpu.pc.wrapping_add(3)),
cpu.read(cpu.pc.wrapping_add(4)),
cpu.read(cpu.pc.wrapping_add(5)),
cpu.read(cpu.pc.wrapping_add(6)),
cpu.read(cpu.pc.wrapping_add(7)),
cpu.read(cpu.pc.wrapping_add(8)),
);
// scratchpad
print!(
"{} {:02x} {:02x} {:02x}",
Goto(0, 34),
cpu.read(0x200),
cpu.read(0x201),
cpu.read(0x202)
)
}
}
fn accumulator(cpu: &mut Cpu) -> u16 { fn accumulator(cpu: &mut Cpu) -> u16 {
let byte = cpu.a; let byte = cpu.a;
@ -209,7 +229,6 @@ fn zero_page_indirect_indexed_with_y(
let address = cpu.read_word(zp as u16); let address = cpu.read_word(zp as u16);
let address: u16 = address.wrapping_add(cpu.y as u16); let address: u16 = address.wrapping_add(cpu.y as u16);
cpu.pc = cpu.pc.wrapping_add(1); cpu.pc = cpu.pc.wrapping_add(1);
println!("{}indirect addr: {:#04x}", Goto(1, 39), address);
address address
} }
@ -255,7 +274,8 @@ fn branch(cpu: &mut Cpu, condition: bool, address: u16) {
cpu.pc = cpu.pc.wrapping_add(1); cpu.pc = cpu.pc.wrapping_add(1);
} }
fn brkpt(cpu: &mut Cpu, address: Option<u16>) { #[cfg(feature = "debug")]
fn breakpoint(cpu: &mut Cpu, _address: Option<u16>) {
cpu.breakpoint() cpu.breakpoint()
} }
@ -264,7 +284,7 @@ fn adc(cpu: &mut Cpu, address: Option<u16>) {
let byte = cpu.read(address); let byte = cpu.read(address);
let carry = cpu.get_flag(StatusFlag::Carry); let carry = cpu.get_flag(StatusFlag::Carry);
let result = cpu.a as u16 + byte as u16 + carry as u16; let result = cpu.a as u16 + byte as u16 + carry as u16;
cpu.set_flag(StatusFlag::Carry, result > u16::from(u8::max_value())); cpu.set_flag(StatusFlag::Carry, result > u16::from(u8::MAX));
cpu.set_flag(StatusFlag::Zero, result as u8 == 0); cpu.set_flag(StatusFlag::Zero, result as u8 == 0);
cpu.set_flag( cpu.set_flag(
StatusFlag::Overflow, StatusFlag::Overflow,
@ -786,7 +806,7 @@ fn sbc(cpu: &mut Cpu, address: Option<u16>) {
let byte = cpu.read(address); let byte = cpu.read(address);
let carry = cpu.get_flag(StatusFlag::Carry); let carry = cpu.get_flag(StatusFlag::Carry);
let result = cpu.a as u16 + byte as u16 + !carry as u16; let result = cpu.a as u16 + byte as u16 + !carry as u16;
cpu.set_flag(StatusFlag::Carry, result > u16::from(u8::max_value())); cpu.set_flag(StatusFlag::Carry, result > u16::from(u8::MAX));
cpu.set_flag(StatusFlag::Zero, result as u8 == 0); cpu.set_flag(StatusFlag::Zero, result as u8 == 0);
cpu.set_flag( cpu.set_flag(
StatusFlag::Overflow, StatusFlag::Overflow,
@ -948,7 +968,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 7, cycles: 7,
name: "brk", name: "brk",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ora), instr_fn: Some(ora),
@ -958,18 +978,24 @@ pub const OPCODES: [Instruction; 256] = [
addr_mode: "zero_page_indexed_indirect", addr_mode: "zero_page_indexed_indirect",
}, },
Instruction { Instruction {
instr_fn: Some(brkpt), #[cfg(feature = "debug")]
instr_fn: Some(breakpoint),
#[cfg(not(feature = "debug"))]
instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "brkpt", #[cfg(not(feature = "debug"))]
addr_mode: "none", name: "none",
#[cfg(feature = "debug")]
name: "breakpoint",
addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(tsb), instr_fn: Some(tsb),
@ -1004,7 +1030,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "php", name: "php",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ora), instr_fn: Some(ora),
@ -1025,7 +1051,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(tsb), instr_fn: Some(tsb),
@ -1081,7 +1107,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(trb), instr_fn: Some(trb),
@ -1116,7 +1142,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "clc", name: "clc",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ora), instr_fn: Some(ora),
@ -1137,7 +1163,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(trb), instr_fn: Some(trb),
@ -1186,14 +1212,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(bit), instr_fn: Some(bit),
@ -1228,7 +1254,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 4, cycles: 4,
name: "plp", name: "plp",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(and), instr_fn: Some(and),
@ -1249,7 +1275,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(bit), instr_fn: Some(bit),
@ -1305,7 +1331,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(bit), instr_fn: Some(bit),
@ -1340,7 +1366,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "sec", name: "sec",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(and), instr_fn: Some(and),
@ -1361,7 +1387,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(bit), instr_fn: Some(bit),
@ -1396,7 +1422,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 6, cycles: 6,
name: "rti", name: "rti",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1410,21 +1436,21 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1452,7 +1478,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "pha", name: "pha",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1473,7 +1499,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(jmp), instr_fn: Some(jmp),
@ -1529,14 +1555,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1564,7 +1590,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "cli", name: "cli",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1578,21 +1604,21 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "phy", name: "phy",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(eor), instr_fn: Some(eor),
@ -1620,7 +1646,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 6, cycles: 6,
name: "rts", name: "rts",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(adc), instr_fn: Some(adc),
@ -1634,14 +1660,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(stz), instr_fn: Some(stz),
@ -1676,7 +1702,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 4, cycles: 4,
name: "pla", name: "pla",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(adc), instr_fn: Some(adc),
@ -1697,7 +1723,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(jmp), instr_fn: Some(jmp),
@ -1753,7 +1779,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(stz), instr_fn: Some(stz),
@ -1788,7 +1814,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "sei", name: "sei",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(adc), instr_fn: Some(adc),
@ -1802,14 +1828,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 4, cycles: 4,
name: "ply", name: "ply",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(jmp), instr_fn: Some(jmp),
@ -1858,14 +1884,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sty), instr_fn: Some(sty),
@ -1900,7 +1926,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "dey", name: "dey",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(bit), instr_fn: Some(bit),
@ -1914,14 +1940,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "txa", name: "txa",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sty), instr_fn: Some(sty),
@ -1977,7 +2003,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sty), instr_fn: Some(sty),
@ -2012,7 +2038,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "tya", name: "tya",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sta), instr_fn: Some(sta),
@ -2026,14 +2052,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "txs", name: "txs",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(stz), instr_fn: Some(stz),
@ -2089,7 +2115,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ldy), instr_fn: Some(ldy),
@ -2124,7 +2150,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "tay", name: "tay",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(lda), instr_fn: Some(lda),
@ -2138,14 +2164,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "tax", name: "tax",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ldy), instr_fn: Some(ldy),
@ -2201,7 +2227,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ldy), instr_fn: Some(ldy),
@ -2236,7 +2262,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "clv", name: "clv",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(lda), instr_fn: Some(lda),
@ -2250,14 +2276,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "tsx", name: "tsx",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(ldy), instr_fn: Some(ldy),
@ -2306,14 +2332,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cpy), instr_fn: Some(cpy),
@ -2348,7 +2374,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "iny", name: "iny",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cmp), instr_fn: Some(cmp),
@ -2362,14 +2388,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "dex", name: "dex",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(wai), instr_fn: Some(wai),
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "wai", name: "wai",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cpy), instr_fn: Some(cpy),
@ -2425,14 +2451,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cmp), instr_fn: Some(cmp),
@ -2460,7 +2486,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "cld", name: "cld",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cmp), instr_fn: Some(cmp),
@ -2474,21 +2500,21 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "phx", name: "phx",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(stp), instr_fn: Some(stp),
address_fn: None, address_fn: None,
cycles: 3, cycles: 3,
name: "stp", name: "stp",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cmp), instr_fn: Some(cmp),
@ -2530,14 +2556,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cpx), instr_fn: Some(cpx),
@ -2572,7 +2598,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "inx", name: "inx",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sbc), instr_fn: Some(sbc),
@ -2586,14 +2612,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "nop", name: "nop",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(cpx), instr_fn: Some(cpx),
@ -2649,14 +2675,14 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sbc), instr_fn: Some(sbc),
@ -2684,7 +2710,7 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 2, cycles: 2,
name: "sed", name: "sed",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sbc), instr_fn: Some(sbc),
@ -2698,21 +2724,21 @@ pub const OPCODES: [Instruction; 256] = [
address_fn: None, address_fn: None,
cycles: 4, cycles: 4,
name: "plx", name: "plx",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: None, instr_fn: None,
address_fn: None, address_fn: None,
cycles: 0, cycles: 0,
name: "none", name: "none",
addr_mode: "none", addr_mode: "implied",
}, },
Instruction { Instruction {
instr_fn: Some(sbc), instr_fn: Some(sbc),

4
src/keyboard.rs
View File

@ -1,9 +1,12 @@
use minifb::InputCallback; use minifb::InputCallback;
use minifb::Key as MKey; use minifb::Key as MKey;
#[cfg(feature = "term")]
use termion::event::Key; use termion::event::Key;
use crate::memory::{MemHandle, MemoryWriter}; use crate::memory::{MemHandle, MemoryWriter};
#[derive(Debug, Clone)]
pub struct Keyboard { pub struct Keyboard {
memory: MemHandle, memory: MemHandle,
} }
@ -22,6 +25,7 @@ impl Keyboard {
self.memory.write(0x4405, 0x00); self.memory.write(0x4405, 0x00);
} }
#[cfg(feature = "term")]
pub fn read_keys(&self, key: Key) { pub fn read_keys(&self, key: Key) {
let mut row0 = 0; let mut row0 = 0;
let mut row1 = 0; let mut row1 = 0;

271
src/lib.rs Normal file
View File

@ -0,0 +1,271 @@
pub mod cpu;
pub mod error;
pub mod instructions;
pub mod keyboard;
pub mod memory;
pub mod video;
use crate::cpu::Cpu;
use crate::keyboard::Keyboard;
use crate::memory::Mem;
use crate::video::Renderer;
use core::panic;
use cpu::CpuController;
use memory::MemHandle;
use minifb::Window;
use serde::{Deserialize, Serialize};
use std::fmt::Debug;
use std::fs::File;
use std::io::Read;
use std::path::Path;
use std::thread::sleep;
use std::time::{Duration, Instant};
#[cfg(any(feature = "term", feature = "debug"))]
use std::{io::stdout, process::exit};
#[cfg(any(feature = "term", feature = "debug"))]
use termion::{
async_stdin, clear,
cursor::{self, Goto},
event::Key,
input::TermRead,
raw::IntoRawMode,
AsyncReader,
};
#[derive(Serialize, Deserialize, Default, Debug)]
pub enum ScreenType {
Terminal,
#[default]
Window,
}
pub struct Config {
pub rom: Option<String>,
pub screen: ScreenType,
pub char_rom: Option<String>,
}
pub struct GeorgeEmuBuilder<'a> {
cpu: Cpu,
renderer: Option<Renderer>,
input: Option<Keyboard>,
config: Option<Config>,
cpu_controller: CpuController,
memory_handle: MemHandle,
memory: Mem,
window: Option<&'a mut Window>,
}
impl<'a> GeorgeEmuBuilder<'a> {
pub fn new() -> Self {
let mut memory = Mem::new();
// TODO: once the memory goes to the handle you can't load a rom,
// so the method that loads a rom needs to have the handle uninitialized first,
// so make everything here be None and set everything at the end
memory.load_bytes(include_bytes!(
"/Users/august/projects/george-emu/src/roms/demo.rom"
));
let memory_handle = MemHandle::new(memory);
let cpu_memory = memory_handle.clone();
let (cpu, cpu_controller) = Cpu::new_with_control(cpu_memory);
let input = None;
let config = None;
let renderer = None;
let window = None;
GeorgeEmuBuilder {
cpu,
cpu_controller,
memory,
memory_handle,
config,
renderer,
window,
input,
}
}
pub fn config(mut self, config: Config) -> Self {
self.config = Some(config);
self
}
/// Adds a keyboard input to the emulator
pub fn keyboard(mut self) -> Self {
let input_memory = self.memory_handle.clone();
let keyboard = Keyboard::new(input_memory);
self.input = Some(keyboard);
self
}
/// Adds a minifb window to the emulator
#[cfg(not(feature = "term"))]
pub fn window(mut self, window: &'a mut Window) -> Self {
let renderer = Renderer::new(self.cpu_controller.clone(), self.memory_handle.clone());
self.renderer = Some(renderer);
self.window = Some(window);
self
}
pub fn rom<P>(mut self, path: P) -> Self
where
P: AsRef<Path> + Debug + Copy,
{
let rom = match File::open(path) {
Ok(file) => {
file
// let mut bin = vec![0; 0x8000];
// file.read_exact(&mut bin).unwrap();
// // println!("reading char rom");
// &bin
}
Err(error) => panic!("Couldn't read file at {path:?}: {error:?}"),
};
self.memory.read_from_bin(rom).unwrap();
self
}
pub fn build(mut self) -> GeorgeEmu<'a> {
#[cfg(not(any(feature = "term", feature = "web")))]
{
match self.window {
Some(ref mut window) => {
if let Some(ref input) = self.input {
window.set_input_callback(Box::new(input.clone()))
}
}
None => panic!(
"Tried to call `GeorgeEmuBuilder::build()` before `GeorgeEmuBuilder::window()`!"
),
}
GeorgeEmu::new(self.cpu, self.renderer.unwrap(), self.input, self.window)
}
#[cfg(feature = "term")]
{
let renderer = Renderer::new(self.cpu_controller.clone(), self.memory_handle.clone());
GeorgeEmu::new(self.cpu, renderer, self.input, self.window)
}
#[cfg(feature = "web")]
{
let renderer = Renderer::new(self.cpu_controller.clone(), self.memory_handle.clone());
GeorgeEmu::new(self.cpu, renderer, self.input, self.window)
}
}
}
#[derive(Debug)]
pub struct GeorgeEmu<'a> {
pub cpu: Cpu,
pub renderer: Renderer,
// in the future these might be set with feature flags,
// but this is simpler
input: Option<Keyboard>,
pub window: Option<&'a mut Window>,
}
impl<'a> GeorgeEmu<'a> {
pub fn builder() -> GeorgeEmuBuilder<'a> {
GeorgeEmuBuilder::new()
}
fn new(
mut cpu: Cpu,
renderer: Renderer,
input: Option<Keyboard>,
window: Option<&'a mut Window>,
) -> Self {
cpu.reset();
Self {
cpu,
input,
renderer,
window,
}
}
pub fn run(&mut self) {
#[cfg(any(feature = "term", feature = "debug"))]
{
let _ = stdout().into_raw_mode();
print!("{}{}", cursor::Hide, clear::All,);
}
#[cfg(any(feature = "term", feature = "debug"))]
let mut stdin = async_stdin();
let clock_interval = Duration::from_nanos(500);
let frame_interval = Duration::from_millis(16);
let mut next_clock = Instant::now() + clock_interval;
let mut next_frame = Instant::now() + frame_interval;
loop {
let now = Instant::now();
if now >= next_clock {
self.cpu.cycle();
next_clock += clock_interval;
}
if now >= next_frame {
#[cfg(any(feature = "term", feature = "debug"))]
self.handle_input(&mut stdin);
#[cfg(not(target_arch = "wasm32"))]
self.draw();
next_frame += frame_interval;
}
let next_run = std::cmp::min(next_clock, next_frame);
let sleep_dur = next_run - now;
sleep(sleep_dur)
}
}
#[cfg(not(target_arch = "wasm32"))]
fn draw(&mut self) {
#[cfg(feature = "term")]
self.renderer.render();
#[cfg(not(feature = "term"))]
match self.window {
Some(ref mut window) => self.renderer.render(window),
None => todo!(),
}
}
#[cfg(target_arch = "wasm32")]
pub fn draw(&self, window: &mut Window) {
#[cfg(feature = "term")]
self.renderer.render();
#[cfg(not(feature = "term"))]
self.renderer.render(window);
}
#[cfg(any(feature = "term", feature = "debug"))]
fn handle_input(&mut self, stdin: &mut AsyncReader) {
match &self.input {
Some(input) => {
let mut stdin = stdin.keys();
if let Some(Ok(key)) = stdin.next() {
match key {
Key::Char('q') => {
print!("{}{}{}", clear::All, cursor::Show, Goto(1, 1));
exit(0);
}
Key::Char('`') => self.cpu.toggle_stopped(),
Key::Char('\n') => self.cpu.cycle(),
Key::Char('i') => self.cpu.interrupt(),
_ => {
#[cfg(feature = "term")]
input.read_keys(key);
}
}
} else {
#[cfg(feature = "term")]
input.clear_keys();
}
}
None => {}
}
}
pub fn cycle(&mut self) {
self.cpu.cycle()
}
}

74
src/main.rs
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@ -1,74 +0,0 @@
mod cli;
mod cpu;
mod error;
mod instructions;
mod keyboard;
mod memory;
mod types;
mod video;
use crate::cpu::Cpu;
use crate::keyboard::Keyboard;
use crate::memory::Mem;
use crate::video::Screen;
use cli::get_input;
use crossterm::cursor;
use memory::MemHandle;
use std::io::stdout;
use std::thread::{self, sleep};
use std::time::Duration;
use termion::cursor::Goto;
use termion::event::Key;
use termion::input::TermRead;
use termion::raw::IntoRawMode;
use termion::{async_stdin, clear};
fn main() {
let _stdout = stdout().into_raw_mode();
let config = get_input();
let mut memory = Mem::new();
let _ = memory.load_rom(&config.rom);
let shared_memory = MemHandle::new(memory);
let screen_memory = shared_memory.clone();
let cpu_memory = shared_memory.clone();
let keyboard_memory = shared_memory.clone();
let keyboard = Keyboard::new(keyboard_memory);
let (mut cpu, cpu_controller) = Cpu::new_with_control(cpu_memory);
cpu.reset();
thread::spawn(move || loop {
cpu.cycle();
});
let screen_remote = cpu_controller.clone();
let mut screen = Screen::new(&config, screen_remote, screen_memory);
let mut stdin = async_stdin().keys();
print!("{}{}", cursor::Hide, clear::All,);
loop {
screen.draw();
if let Some(Ok(key)) = stdin.next() {
keyboard.read_keys(key);
match key {
Key::Char('q') => {
break;
}
Key::Char('`') => cpu_controller.toggle(),
Key::Char('\n') => cpu_controller.cycle(),
Key::Char('i') => cpu_controller.irq(),
_ => {}
}
} else {
keyboard.clear_keys();
}
sleep(Duration::from_millis(16));
}
print!("{}{}{}", clear::All, cursor::Show, Goto(1, 1));
}

61
src/memory.rs
View File

@ -1,10 +1,7 @@
use anyhow::{bail, Result}; use anyhow::{bail, Result};
use core::panic;
use std::cell::RefCell;
use std::io::{self, Write}; use std::io::{self, Write};
use std::panic;
use std::path::{Path, PathBuf}; use std::path::{Path, PathBuf};
use std::process::exit;
use std::rc::Rc;
use std::str::FromStr; use std::str::FromStr;
use std::sync::{Arc, Mutex}; use std::sync::{Arc, Mutex};
use std::{fs::File, io::Read}; use std::{fs::File, io::Read};
@ -16,11 +13,11 @@ impl MemHandle {
Self(Arc::new(Mutex::new(memory))) Self(Arc::new(Mutex::new(memory)))
} }
pub fn read(&self, address: u16) -> u8 { pub fn read(&self, address: u16) -> u8 {
let memory = self.0.lock().unwrap(); let memory = self.0.try_lock().unwrap();
memory.read(address) memory.read(address)
} }
pub fn write(&self, address: u16, data: u8) { pub fn write(&self, address: u16, data: u8) {
let mut memory = self.0.lock().unwrap(); let mut memory = self.0.try_lock().unwrap();
memory.write(address, data); memory.write(address, data);
} }
@ -49,15 +46,25 @@ pub trait MemoryWriter {
// 0x10000 elements // 0x10000 elements
pub struct Mem([u8; 0x10000]); pub struct Mem([u8; 0x10000]);
impl Default for Mem { // impl Default for Mem {
fn default() -> Self { // fn default() -> Self {
Self([0; 0x10000]) // let bytes = include_bytes!("/Users/august/projects/george-emu/src/roms/george.rom");
} // let padding = [0; 0x8000];
} // let rom: [u8; 0x10000] = {
// let mut rom: [u8; 0x10000] = [0; 0x10000];
// let (one, two) = rom.split_at_mut(padding.len());
// one.copy_from_slice(&padding);
// two.copy_from_slice(bytes);
// rom
// };
// Self(rom)
// }
// }
impl Mem { impl Mem {
pub fn new() -> Self { pub fn new() -> Self {
Mem::default() Self([0; 0x10000])
} }
pub fn dump(&self, path: PathBuf) -> io::Result<()> { pub fn dump(&self, path: PathBuf) -> io::Result<()> {
let mut outfile = File::create(path)?; let mut outfile = File::create(path)?;
@ -97,16 +104,22 @@ impl Mem {
pub fn poke(&self, address: u16) { pub fn poke(&self, address: u16) {
println!("{:02x}", self.read(address)); println!("{:02x}", self.read(address));
} }
//pub fn read_from_bin(&mut self, f: File) -> Result<()> { pub fn load_bytes(&mut self, bytes: &[u8]) {
// let bytes = f.bytes(); for (address, byte) in bytes.into_iter().enumerate() {
// for (address, byte) in bytes.enumerate() { self.write(address as u16 + 0x8000, *byte)
// match byte { }
// Ok(value) => self.write(address as u16, value), }
// Err(_) => {
// bail!("couldn't write byte {:#04x}", address); pub fn read_from_bin(&mut self, f: File) -> Result<()> {
// } let bytes = f.bytes();
// } for (address, byte) in bytes.enumerate() {
// } match byte {
// Ok(()) Ok(value) => self.write(address as u16 + 0x8000, value),
//} Err(_) => {
bail!("couldn't write byte {:#04x}", address);
}
}
}
Ok(())
}
} }

123
src/roms/demo.asm Normal file
View File

@ -0,0 +1,123 @@
; .setcpu "65C02"
.include "./macro.inc"
; okay so rn i wanna set up a very basic system init, and write a few subroutines to draw characters at x,y coordinates
n = $01 ; temporary storage for data stack operations
key_row = $200 ; used for character lookup when key pressed
key_col = $201
cursor = $202
char_buffer = $300 ; 256 byte character buffer
kb_row = $4400 ; keyboard hardware register
kb_row_cache = $203 ; cache
.org $8000
reset:
sei
ldx #0; initialize data stack pointer
; initdisplay:
; lda #0
; ldy #0
; cleardisplay:
; sta $6000,y
; sta $6100,y
; sta $6200,y
; sta $6300,y
; sta $6400,y
; sta $6500,y
; sta $6600,y
; sta $6700,y ; this goes slightly over but it's fine
; iny
; bne cleardisplay
; cli
main:
jsr draw
jmp main
draw:
char = $200
x = $201
y = $202
.y_loop:
.x_loop:
inc char
lda x
push
sta 0, x
stz 1, x
lda y
push
sta 0, x
sta 1, x
lda char
push
sta 0, x
sta 1, x
jsr draw_char
inc x
lda #64
cmp x
bne .x_loop
inc y
lda #30
cmp y
bne .y_loop
.end:
rts
draw_char: ; draw a character c at (x, y) (n1: x n2: y n3: c -- )
lda 0, x ; load a with character to draw
pop ; and pop it off the stack
jsr get_char_address ; calculate where to put the character in memory
sta (0, x) ; store a at the address pointed to on the stack
rts
get_char_address: ; gets vram address for a character at (x, y),
; (n1: x n2: y -- n: $6000 + x + (64 * y))
;jsr push_lit ; push 64 onto stack, low byte first
;.byte 64
;.byte 0
pha
lda #64
push ; doing this instead until `push_lit` is fixed
sta 0, x
stz 1, x
jsr mult ; multiply 64 with y (n2)
jsr plus ; add result with x (n1)
;jsr push_lit ; push vram address onto the stack
;.byte $00
;.byte $60
lda #$60
push
sta 1, x
stz 0, x
jsr plus ; add vram start address to result
pla
rts
fill: ; fills an area from (x1, y1) to (x2, y2) will character c, (n1: c n2: x1 n3: y1 n4: x2 n5: y2 -- )
jsr get_char_address
isr: ; interrupt service routine
pha
phx
phy
; jsr keyboard
ply
plx
pla
rti
.include "math.inc"
.org $fffc
.word reset
.word isr

BIN
src/roms/demo.rom Normal file
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Binary file not shown.

4
src/types.rs
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@ -1,4 +0,0 @@
use std::{u16, u8};
pub type Byte = u8;
pub type Word = u16;

165
src/video.rs
View File

@ -1,81 +1,68 @@
use minifb::{Scale, ScaleMode, Window, WindowOptions}; use minifb::{Scale, ScaleMode, Window, WindowOptions};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
#[cfg(feature = "term")]
use termion::{ use termion::{
color::{self, Bg, Color, Fg}, color::{self, Bg, Fg},
cursor::Goto, cursor::Goto,
screen::IntoAlternateScreen,
}; };
use crate::{ use crate::{
cli::Config,
cpu::CpuController, cpu::CpuController,
keyboard::Keyboard,
memory::{MemHandle, MemoryReader}, memory::{MemHandle, MemoryReader},
types::{Byte, Word},
}; };
use std::{ use std::{
fs::File, fs::File,
io::{self, Read, Write}, io::{self, Read, Write},
path::Path, path::Path,
process::exit,
thread::sleep,
time::{Duration, Instant},
}; };
const FG_COLOR: u32 = 0xFFCC00; // const FG_COLOR: u32 = 0xFFCC00;
const BG_COLOR: u32 = 0x110500; // const BG_COLOR: u32 = 0x110500;
const FG_COLOR: u32 = 0xFF00CCFF;
const BG_COLOR: u32 = 0xFF000511;
const WIDTH: usize = 512; const WIDTH: usize = 512;
const HEIGHT: usize = 380; const HEIGHT: usize = 380;
pub fn get_char_bin<P>(char_rom: Option<P>) -> [u8; 0x8000] // pub fn get_char_bin<P>(char_rom: Option<P>) -> [u8; 0x8000]
where // where
P: AsRef<Path>, // P: AsRef<Path>,
{ // {
match char_rom { // match char_rom {
Some(path) => { // Some(path) => {
let mut file = File::open(path).unwrap(); // let mut file = File::open(path).unwrap();
let mut bin = vec![0; 0x8000]; // let mut bin = vec![0; 0x8000];
file.read_exact(&mut bin).unwrap(); // file.read_exact(&mut bin).unwrap();
// println!("reading char rom"); // // println!("reading char rom");
bin.try_into().unwrap() // bin.try_into().unwrap()
} // }
None => *include_bytes!("./roms/cozette.rom"), // None => *include_bytes!("./roms/cozette.rom"),
} // }
} // }
trait Renderer { #[cfg(not(feature = "term"))]
fn render(&mut self) {} #[derive(Debug)]
} pub struct Renderer {
#[derive(Serialize, Deserialize, Debug, Default)]
pub enum ScreenType {
Window,
#[default]
Terminal,
}
pub struct WindowRenderer {
char_rom: [u8; 0x8000], char_rom: [u8; 0x8000],
window: Window,
memory: MemHandle, memory: MemHandle,
controller: CpuController,
} }
impl WindowRenderer { #[cfg(not(feature = "term"))]
pub fn new<P>(memory: MemHandle, char_rom: Option<P>, window: Window) -> Self impl Renderer {
where // pub fn new<P>(controller: CpuController, memory: MemHandle, char_rom: Option<P>) -> Self
P: AsRef<Path>, // where
{ // P: AsRef<Path>,
let char_rom = get_char_bin(char_rom); pub fn new(controller: CpuController, memory: MemHandle) -> Self {
// let char_rom = get_char_bin(char_rom);
let char_rom = *include_bytes!("./roms/cozette.rom");
Self { Self {
memory, memory,
window,
char_rom, char_rom,
} controller,
} }
} }
impl Renderer for WindowRenderer { pub fn render(&self, window: &mut Window) {
fn render(&mut self) {
// the rest of this function is arcane wizardry // the rest of this function is arcane wizardry
// based on the specifics of george's weird // based on the specifics of george's weird
// display and characters... don't fuck around w it // display and characters... don't fuck around w it
@ -99,34 +86,24 @@ impl Renderer for WindowRenderer {
} }
} }
} }
self.window self.controller.irq();
.update_with_buffer(&buffer, WIDTH, HEIGHT) window.update_with_buffer(&buffer, WIDTH, HEIGHT).unwrap();
.unwrap();
} }
} }
impl MemoryReader for WindowRenderer { impl MemoryReader for Renderer {
fn read(&self, address: Word) -> Byte { fn read(&self, address: u16) -> u8 {
self.memory.read(address) self.memory.read(address)
} }
} }
pub struct TerminalRenderer { #[cfg(feature = "term")]
pub struct Renderer {
memory: MemHandle, memory: MemHandle,
controller: CpuController,
} }
impl TerminalRenderer { #[cfg(feature = "term")]
pub fn new(memory: MemHandle) -> Self {
Self { memory }
}
}
impl MemoryReader for TerminalRenderer {
fn read(&self, address: Word) -> Byte {
self.memory.read(address)
}
}
const ASCII_LOOPUP: [&str; 256] = [ const ASCII_LOOPUP: [&str; 256] = [
" ", "░", "▒", "▓", "♡", "♥", "⭐", "✭", "", "✦", "✨", "♀", "♂", "⚢", "⚣", "⚥", "♩", "♪", " ", "░", "▒", "▓", "♡", "♥", "⭐", "✭", "", "✦", "✨", "♀", "♂", "⚢", "⚣", "⚥", "♩", "♪",
"♫", "♬", "ﱝ", "", "", "", "奄", "奔", "婢", "ﱜ", "ﱛ", "", "", "", " ", "!", "\"", "#", "♫", "♬", "ﱝ", "", "", "", "奄", "奔", "婢", "ﱜ", "ﱛ", "", "", "", " ", "!", "\"", "#",
@ -144,8 +121,12 @@ const ASCII_LOOPUP: [&str; 256] = [
"", "", "", "", "🎁", "", "", "", "", "⚐", "⚑", "", "", "", "", "", "", "", "🎁", "", "", "", "", "⚐", "⚑", "", "", "",
]; ];
impl Renderer for TerminalRenderer { #[cfg(feature = "term")]
fn render(&mut self) { impl Renderer {
pub fn new(controller: CpuController, memory: MemHandle) -> Self {
Self { controller, memory }
}
pub fn render(&self) {
let mut stdout = io::stdout(); let mut stdout = io::stdout();
let mut i = 0; let mut i = 0;
for char_row in 0..29 { for char_row in 0..29 {
@ -164,54 +145,6 @@ impl Renderer for TerminalRenderer {
); );
} }
} }
}
}
pub struct Screen {
renderer: Box<dyn Renderer>,
controller: CpuController,
}
impl Screen {
pub fn new(config: &Config, controller: CpuController, memory: MemHandle) -> Self {
let renderer: Box<dyn Renderer> = match config.screen {
ScreenType::Window => {
let mut window = Window::new(
"ʕ·ᴥ·ʔ-☆",
512,
380,
WindowOptions {
resize: true,
borderless: true,
title: true,
transparency: false,
scale: Scale::FitScreen,
scale_mode: ScaleMode::AspectRatioStretch,
topmost: false,
none: true,
},
)
.unwrap();
window.set_input_callback(Box::new(Keyboard::new(memory.clone())));
Box::new(WindowRenderer::new(memory, config.char_rom.clone(), window))
}
ScreenType::Terminal => Box::new(TerminalRenderer::new(memory)),
};
Self {
renderer,
controller,
}
}
pub fn draw(&mut self) {
self.controller.irq(); self.controller.irq();
self.renderer.render();
} }
// pub fn run(&mut self) {
// loop {
// // sleep(Duration::from_millis(16));
// self.draw();
// }
// }
} }