1 // license:BSD-3-Clause
2 // copyright-holders:Martin Buchholz
3 /***************************************************************************
4 
5   Poly-Play
6   (c) 1985 by VEB Polytechnik Karl-Marx-Stadt
7 
8   sound hardware
9 
10   driver written by Martin Buchholz (buchholz@mail.uni-greifswald.de)
11 
12 ***************************************************************************/
13 
14 #include "emu.h"
15 #include "includes/polyplay.h"
16 
WRITE_LINE_MEMBER(polyplay_state::ctc_zc0_w)17 WRITE_LINE_MEMBER(polyplay_state::ctc_zc0_w)
18 {
19 	if (state)
20 	{
21 		m_flipflop1 = ~m_flipflop1;
22 		m_speaker1->level_w(m_flipflop1);
23 	}
24 }
25 
WRITE_LINE_MEMBER(polyplay_state::ctc_zc1_w)26 WRITE_LINE_MEMBER(polyplay_state::ctc_zc1_w)
27 {
28 	if (state)
29 	{
30 		m_flipflop2 = ~m_flipflop2;
31 		m_speaker2->level_w(m_flipflop2);
32 	}
33 }
34