Prepare for migration to iced

Cargo.toml

@@ -8,6 +8,7 @@ license = "MIT"
 [features]
 default = ["unstable"]
 unstable = []
+iced = ["dep:iced"]
 rhexdump = ["dep:rhexdump"]
 serde = ["dep:serde"]
 
@@ -26,6 +27,7 @@ overflow-checks = false
 
 [dependencies]
 gumdrop = "^0.8.1"
+iced = {version = "0.8.0", optional = true}
 minifb = { version = "^0.24.0", features = ["wayland"] }
 owo-colors = "^3"
 rand = "^0.8.5"

src/bin/chirp-iced.rs

@@ -0,0 +1,26 @@
+#![allow(unused_imports)]
+use chirp::prelude::*;
+#[cfg(features = "iced")]
+use iced::{
+    executor, time, window, Alignment, Application, Command, Element, Length, Settings,
+    Subscription,
+};
+
+#[cfg(features = "iced")]
+fn main() -> iced::Result {
+    Ok(())
+}
+
+#[cfg(not(features = "iced"))]
+fn main() -> Result<()> {
+    Ok(())
+}
+
+/// TODO: `impl Application for Emulator {}`
+#[derive(Clone, Debug, Default, PartialEq)]
+struct Emulator {
+    mem: Bus,
+    cpu: CPU,
+    fps: f64,
+    ipf: usize,
+}

src/bin/chirp-minifb.rs

@@ -91,7 +91,7 @@ impl State {
             ch8: Chip8 {
                 bus: bus! {
                     // Load the charset into ROM
-                    Charset [0x0050..0x00A0] = include_bytes!("mem/charset.bin"),
+                    Charset [0x0050..0x00A0] = include_bytes!("../mem/charset.bin"),
                     // Load the ROM file into RAM
                     Program [0x0200..0x1000] = &read(&options.file)?,
                     // Create a screen