--- mess-git\src\emu\video\315_5313.c	2015-01-17 07:30:04.000000000 -0200
+++ mess-new\src\emu\video\315_5313.c	2015-02-21 18:56:52.000000000 -0300
@@ -2625,7 +2625,7 @@ void sega315_5313_device::vdp_handle_sca
 		if (get_scanline_counter() == m_irq6_scanline)
 		{
 		//  osd_printf_debug("x %d",get_scanline_counter());
-			m_irq6_on_timer->adjust(attotime::from_usec(6));
+			m_irq6_on_timer->adjust(attotime::from_usec(65));
 			m_irq6_pending = 1;
 			m_vblank_flag = 1;