Update with new fault handler behavior

uxn32.c

@@ -1184,19 +1184,21 @@ static void RunUxn(EmuWindow *d, UINT steps, BOOL initial)
 	/* TODO add checkbox to enable this debris check if (u->wst->ptr || u->rst->ptr) u->fault_code = 127; */
 	if (u->fault_code != UXN_FAULT_DONE)
 	{
-		UINT fault_handler;
+		UINT last_addr = ((UINT)u->pc - 1) % UXN_RAM_SIZE, last_op = u->ram[last_addr], fault_handler;
 		DEVPEEK(d->box->device_memory, fault_handler, 0x0);
-		if (u->fault_code <= UXN_FAULT_DIVIDE_BY_ZERO && fault_handler)
+		if (fault_handler && u->fault_code <= UXN_FAULT_DIVIDE_BY_ZERO)
 		{
+			u->wst->ptr = 4;
+			u->wst->dat[0] = last_addr >> 8, u->wst->dat[1] = last_addr;
+			u->wst->dat[2] = last_op;
+			u->wst->dat[3] = u->fault_code - 1;
+			u->fault_code = 0;
 			u->pc = fault_handler;
-			u->wst->ptr = 1;
-			u->wst->dat[0] = u->fault_code - 1;
 			goto residual;
 		}
 		/* If there's a division by zero, push 0xFF onto the stack to rebalance it. Then, if the user hits resume, the program has a better chance of not faulting again. */
 		if (u->fault_code == UXN_FAULT_DIVIDE_BY_ZERO)
 		{
-			UINT last_op = u->ram[((UINT)u->pc - 1) % UXN_RAM_SIZE]; /* Get last op executed */
 			UxnStack *s = last_op & 0x40 ? u->rst : u->wst; /* Which stack to push to */
 			int i = 0, count = (last_op & 0x20) >> 5; /* Push 1 or 2 bytes */
 			for (; i <= count; i++) s->dat[s->ptr++] = 0xFF;