initial: memory and cpu state, rom load path
This commit is contained in:
commit
0c6c79fa3e
2
.gitignore
vendored
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2
.gitignore
vendored
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|
|
@ -0,0 +1,2 @@
|
|||
/target
|
||||
/test-roms
|
||||
323
Cargo.lock
generated
Normal file
323
Cargo.lock
generated
Normal file
|
|
@ -0,0 +1,323 @@
|
|||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
version = 3
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
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|
||||
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|
||||
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
checksum = "4ec7a4128863c188deefe750ac1d1dfe66c236909f845af04beed823638dc1b2"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"clap_derive",
|
||||
"clap_lex",
|
||||
"is-terminal",
|
||||
"once_cell",
|
||||
"strsim",
|
||||
"termcolor",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro-error",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"os_str_bytes",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"errno-dragonfly",
|
||||
"libc",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"cc",
|
||||
"libc",
|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
"clap",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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||||
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|
||||
|
||||
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|
||||
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||||
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|
||||
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||||
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|
||||
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|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"libc",
|
||||
"windows-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "is-terminal"
|
||||
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|
||||
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|
||||
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|
||||
dependencies = [
|
||||
"hermit-abi",
|
||||
"io-lifetimes",
|
||||
"rustix",
|
||||
"windows-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "linux-raw-sys"
|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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||||
|
||||
[[package]]
|
||||
name = "os_str_bytes"
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||
[[package]]
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||||
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||||
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||||
dependencies = [
|
||||
"proc-macro-error-attr",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
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||||
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||||
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||||
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||||
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||||
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||||
[[package]]
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||||
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||||
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||||
"proc-macro2",
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||||
]
|
||||
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||||
[[package]]
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||||
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||||
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||||
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|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"errno",
|
||||
"io-lifetimes",
|
||||
"libc",
|
||||
"linux-raw-sys",
|
||||
"windows-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.10.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.107"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1f4064b5b16e03ae50984a5a8ed5d4f8803e6bc1fd170a3cda91a1be4b18e3f5"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "termcolor"
|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
dependencies = [
|
||||
"winapi-util",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
|
||||
|
||||
[[package]]
|
||||
name = "version_check"
|
||||
version = "0.9.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu",
|
||||
"winapi-x86_64-pc-windows-gnu",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-util"
|
||||
version = "0.1.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||
dependencies = [
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.42.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8c9864e83243fdec7fc9c5444389dcbbfd258f745e7853198f365e3c4968a608"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4c8b1b673ffc16c47a9ff48570a9d85e25d265735c503681332589af6253c6c7"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "de3887528ad530ba7bdbb1faa8275ec7a1155a45ffa57c37993960277145d640"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "bf4d1122317eddd6ff351aa852118a2418ad4214e6613a50e0191f7004372605"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.42.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
|
||||
9
Cargo.toml
Normal file
9
Cargo.toml
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
[package]
|
||||
name = "gb-emu"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
clap = {version = "4.1.1", features = ["derive"]}
|
||||
100
src/main.rs
Normal file
100
src/main.rs
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
#![feature(exclusive_range_pattern)]
|
||||
|
||||
use clap::Parser;
|
||||
use std::fs;
|
||||
|
||||
/// Simple program to greet a person
|
||||
#[derive(Parser, Debug)]
|
||||
#[command(author, version, about, long_about = None)]
|
||||
struct Args {
|
||||
/// ROM path
|
||||
#[arg(short, long)]
|
||||
rom: String,
|
||||
}
|
||||
|
||||
type Register = u16;
|
||||
type ROM = Vec<u8>;
|
||||
type Operation = u8;
|
||||
|
||||
struct Memory {
|
||||
rom: ROM,
|
||||
}
|
||||
|
||||
impl Memory {
|
||||
fn get(&mut self, address: u16) -> u8 {
|
||||
match address {
|
||||
0x0..0x8000 => {
|
||||
// rom access
|
||||
// todo - switchable rom banks
|
||||
return self.rom[address as usize];
|
||||
}
|
||||
0x8000..0xA000 => {
|
||||
panic!("vram");
|
||||
}
|
||||
0xA000..0xC000 => {
|
||||
panic!("switchable ram bank");
|
||||
}
|
||||
0xC000..0xE000 => {
|
||||
panic!("ram")
|
||||
}
|
||||
0xE000..0xFE00 => {
|
||||
panic!("ram mirror")
|
||||
}
|
||||
0xFE00..0xFEA0 => {
|
||||
panic!("sprite attrib memory");
|
||||
}
|
||||
0xFEA0..0xFF00 => {
|
||||
panic!("empty")
|
||||
}
|
||||
0xFF00..0xFF4C => {
|
||||
panic!("I/O");
|
||||
}
|
||||
0xFF4C..0xFF80 => {
|
||||
panic!("empty");
|
||||
}
|
||||
0xFF80..0xFFFF => {
|
||||
panic!("internal ram");
|
||||
}
|
||||
0xFFFF => {
|
||||
panic!("interrupt enable register");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
struct State {
|
||||
af: Register,
|
||||
bc: Register,
|
||||
de: Register,
|
||||
hl: Register,
|
||||
sp: Register,
|
||||
pc: Register,
|
||||
}
|
||||
|
||||
impl Default for State {
|
||||
fn default() -> Self {
|
||||
Self {
|
||||
af: 0x01B0,
|
||||
bc: 0x0013,
|
||||
de: 0x00D8,
|
||||
hl: 0x014D,
|
||||
sp: 0xFFFE,
|
||||
pc: 0x0100,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let args = Args::parse();
|
||||
|
||||
let rom: ROM = fs::read(args.rom).expect("Could not load ROM");
|
||||
let state = State::default();
|
||||
loop {
|
||||
let op = fetch_op(&rom, state.pc);
|
||||
}
|
||||
}
|
||||
|
||||
fn fetch_op(rom: &ROM, pc: Register) -> Operation {
|
||||
rom[pc as usize]
|
||||
}
|
||||
Loading…
Reference in a new issue