Monotonic: This flag is being deprecated soon, switch it for bool

src/bin/chirp-minifb/main.rs

@@ -145,7 +145,6 @@ impl State {
                         quirks: options.mode.unwrap_or_default().into(),
                         debug: options.debug,
                         pause: options.pause,
-                        monotonic: options.speed,
                         ..Default::default()
                     },
                 )?,

src/cpu.rs

@@ -451,7 +451,7 @@ impl CPU {
     /// # use chirp::error::Error;
     /// let mut cpu = CPU::default();
     /// # cpu.flags.debug = true;        // enable live disassembly
-    /// # cpu.flags.monotonic = Some(8); // enable monotonic/test timing
+    /// # cpu.flags.monotonic = true; // enable monotonic/test timing
     /// let mut bus = bus!{
     ///     Program [0x0200..0x0f00] = &[
     ///         0xff, 0xff, // invalid!
@@ -466,7 +466,7 @@ impl CPU {
         // Do nothing if paused
         if self.flags.is_paused() {
             // always tick in test mode
-            if self.flags.monotonic.is_some() {
+            if self.flags.monotonic {
                 self.cycle += 1;
             }
             return Ok(self);

src/cpu/flags.rs

@@ -23,8 +23,8 @@ pub struct Flags {
     pub mode: Mode,
     /// Represents the set of emulator [Quirks] to enable, independent of the [Mode]
     pub quirks: Quirks,
-    /// Represents the number of instructions to run per tick of the internal timer
-    pub monotonic: Option<usize>,
+    /// Set when the interpreter should increase the cycle count during a pause
+    pub monotonic: bool,
 }
 
 impl Flags {

src/cpu/tests.rs

@@ -27,7 +27,6 @@ fn setup_environment() -> (CPU, Bus) {
             flags: Flags {
                 debug: true,
                 pause: false,
-                monotonic: Some(8),
                 ..Default::default()
             },
             ..CPU::default()
@@ -1076,8 +1075,8 @@ mod behavior {
         #[test]
         fn delay() {
             let (mut cpu, mut bus) = setup_environment();
-            cpu.flags.monotonic = None;
             cpu.delay = 10.0;
+            cpu.flags.monotonic = false;
             for _ in 0..2 {
                 cpu.multistep(&mut bus, 8)
                     .expect("Running valid instructions should always succeed");
@@ -1102,7 +1101,7 @@ mod behavior {
         #[test]
         fn vbi_wait() {
             let (mut cpu, mut bus) = setup_environment();
-            cpu.flags.monotonic = None; // disable monotonic timing
+            cpu.flags.monotonic = false; // disable monotonic timing
             cpu.flags.draw_wait = true;
             for _ in 0..2 {
                 cpu.multistep(&mut bus, 8)

tests/integration.rs

@@ -133,7 +133,6 @@ mod cpu {
                 pause: false,
                 keypause: false,
                 draw_wait: false,
-                monotonic: None,
                 ..Default::default()
             };
             let cf2 = cf1.clone();