print status flags

snes-core/src/cpu/registers.rs

@@ -185,6 +185,13 @@ impl Registers {
         self.d as u8
     }
 
+    pub fn is_emu_mode_flag_exposed(&self) -> bool {
+        match self.exposed_bit_zero {
+            ModeFlag::Carry => false,
+            ModeFlag::EmulationMode => true,
+        }
+    }
+
     pub fn exchange_carry_and_emulation(&mut self) {
         match self.exposed_bit_zero {
             ModeFlag::Carry => {

snes-frontend/src/main.rs

@@ -333,6 +333,11 @@ fn main() {
                                     ui.text(format!("PC:       | {:#06X}",   emulator.cpu.registers.pc));
                                     ui.text(format!("EMU MODE: |  {}",       emulator.cpu.registers.emulation_mode));
                                     ui.text(format!("CARRY:    |  {}",       emulator.cpu.registers.carry));
+                                    ui.separator();
+                                    ui.text("Status flags:");
+                                    ui.text(format!("       E (exposed: {})", emulator.cpu.registers.is_emu_mode_flag_exposed()));
+                                    ui.text("NVMXDIZC");
+                                    ui.text(format!("{:08b}", emulator.cpu.registers.p));
                                 });
                         }