0xrsydn/gameboy-rust
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feat(cartridge): add explicit GPIO and RTC control support

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0xrsydn 2026-10-07 05:28:52 +07:00
commit 692be36349
18 changed files with 889 additions and 26 deletions
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18
crates/desktop/src/cartridge.rs
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@ -13,13 +13,14 @@ use std::{
use gba_core::{
bios,
cartridge::CartridgeHardware,
machine::{Machine, MachineError, StepKind},
memory::ROM_CAPACITY,
};
const MAX_STEPS: u64 = 100_000_000;
const MAX_FRAMES: u64 = 100_000;
const USAGE: &str = "usage: gameboy-rust --rom PATH (--steps COUNT | --window [--frames COUNT]); steps: 1..=100000000, frames: 1..=100000; do not combine with demo or help options";
const USAGE: &str = "usage: gameboy-rust --rom PATH [--rtc] (--steps COUNT | --window [--frames COUNT]); steps: 1..=100000000, frames: 1..=100000; do not combine with demo or help options";
#[derive(Debug, PartialEq, Eq)]
enum Mode {
@ -31,6 +32,7 @@ enum Mode {
pub struct Options {
path: PathBuf,
mode: Mode,
hardware: CartridgeHardware,
}
pub fn parse_args(args: &[OsString]) -> io::Result<Options> {
@ -39,6 +41,7 @@ pub fn parse_args(args: &[OsString]) -> io::Result<Options> {
let mut steps = None;
let mut frames = None;
let mut window = false;
let mut hardware = CartridgeHardware::None;
let mut args = args.iter();
while let Some(arg) = args.next() {
if arg == "--rom" && path.is_none() {
@ -47,6 +50,8 @@ pub fn parse_args(args: &[OsString]) -> io::Result<Options> {
.filter(|value| !value.is_empty())
.ok_or_else(invalid)?;
path = Some(PathBuf::from(value));
} else if arg == "--rtc" && hardware == CartridgeHardware::None {
hardware = CartridgeHardware::Rtc;
} else if arg == "--window" && !window {
window = true;
} else if (arg == "--steps" && steps.is_none()) || (arg == "--frames" && frames.is_none()) {
@ -83,6 +88,7 @@ pub fn parse_args(args: &[OsString]) -> io::Result<Options> {
Ok(Options {
path: path.ok_or_else(invalid)?,
mode,
hardware,
})
}
@ -237,12 +243,20 @@ pub fn execute(options: Options, writer: &mut impl Write) -> Result<(), Box<dyn
writer,
"Original BIOS replacement; no commercial-game compatibility claim."
)?;
if options.hardware == CartridgeHardware::Rtc {
writeln!(writer, "RTC selected: GPIO and command/control only; calendar and IRQ commands remain diagnostic.")?;
}
let steps = match options.mode {
Mode::Terminal { steps } => steps,
Mode::Window { frames } => return crate::desktop::run_rom(bytes, frames, writer),
Mode::Window { frames } => {
return crate::desktop::run_rom(bytes, frames, options.hardware, writer)
}
};
writeln!(writer, "Machine-step limit: {steps} (includes boot)")?;
let mut machine = bios::boot(bytes)?;
machine
.memory_mut()
.set_cartridge_hardware(options.hardware);
let report = run_bounded(&mut machine, steps);
write_report(writer, &machine, &report)?;
writer.flush()?;