dont look at this, it doesnt work

libsnes/bsnes/snes/alt/cpu/cpu.cpp

@@ -60,6 +60,10 @@ void CPU::enter() {
       scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
     }
 
+		if (regs.hang == HangType::Wait) this->op_wai();
+		else if (regs.hang == HangType::Stop) this->op_stp();
+		else 
+		{
 			if(status.nmi_pending) {
 				status.nmi_pending = false;
 				regs.vector = (regs.e == false ? 0xffea : 0xfffa);
@@ -72,9 +76,8 @@ void CPU::enter() {
 				op_irq();
 			}
 
-		if(regs.hang == HangType::Wait) this->op_wai();
+			op_step();
-		else if (regs.hang == HangType::Stop) this->op_stp();
+		}
-		else op_step();
   }
 }
 

libsnes/bsnes/snes/chip/sa1/sa1.cpp

@@ -19,6 +19,10 @@ void SA1::enter() {
       scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
     }
 
+		if (regs.hang == HangType::Wait) this->op_wai();
+		else if (regs.hang == HangType::Stop) this->op_stp();
+		else
+		{
 			if(mmio.sa1_rdyb || mmio.sa1_resb) {
 				//SA-1 co-processor is asleep
 				tick();
@@ -35,6 +39,7 @@ void SA1::enter() {
 			(this->*opcode_table[op_readpc()])();
 		}
   }
+}
 
 void SA1::op_irq() {
   op_read(regs.pc.d);

libsnes/bsnes/snes/cpu/core/opcode_misc.cpp

@@ -72,20 +72,28 @@ L rd.h = op_readlong(vectorN + 1);
 }
 
 void CPUcore::op_stp() {
+	if(regs.hang == HangType::Stop)
+		goto SKIP;
 	regs.hang = HangType::Stop;
   while(regs.wai = true) {
 L   op_io();
 	scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
+	if (scheduler.exit_reason.value == Scheduler::ExitReason::SynchronizeEvent) return;
+SKIP: ;
 	}
 	regs.hang = HangType::None;
 }
 
 void CPUcore::op_wai() {
+	if (regs.hang == HangType::Wait)
+		goto SKIP;
   regs.wai = true;
 	regs.hang = HangType::Wait;
   while(regs.wai) {
 L   op_io();
 	scheduler.exit(Scheduler::ExitReason::SynchronizeEvent);
+	if(scheduler.exit_reason.value == Scheduler::ExitReason::SynchronizeEvent) return;
+	SKIP: ;
 	}
 	regs.hang = HangType::None;
   op_io();

libsnes/bsnes/snes/cpu/core/serialization.cpp

@@ -25,6 +25,7 @@ void CPUcore::core_serialize(serializer &s) {
   s.integer(regs.wai);
   s.integer(regs.mdr);
   s.integer(regs.vector);
+	s.integer((unsigned)regs.hang);
 
   s.integer(aa.d);
   s.integer(rd.d);