added field for checking rom loaded state.

src/simulator/simulator.odin

@@ -5,6 +5,7 @@ import rl "vendor:raylib"
 
 Simulator :: struct {
 	machine: ^emu.System,
+	rom_loaded: bool,
 	running: bool,
 	paused: bool,
 	cycles_per_second: int,
@@ -15,8 +16,9 @@ Simulator :: struct {
 run_simulator :: proc(s: ^emu.System) {
 	sim := Simulator {
 		machine = s,
-		running = true,		
+		rom_loaded = false,
-		paused = false,		
+		running = false,
+		paused = true,
 		cycles_per_second = 12
 	}