From aa36ff470a87bd06fa29f1b0e18dd392a2804330 Mon Sep 17 00:00:00 2001
From: Phil Bennett <philipjbennett@users.noreply.github.com>
Date: Thu, 5 May 2011 20:19:18 +0000
Subject: [PATCH] 6840ptm.c: Fixed mode check in set_gate() [J Wallace]

---
 src/emu/machine/6840ptm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/emu/machine/6840ptm.c b/src/emu/machine/6840ptm.c
index 6b909c35a7f..83dc27d824b 100644
--- a/src/emu/machine/6840ptm.c
+++ b/src/emu/machine/6840ptm.c
@@ -644,7 +644,7 @@ void ptm6840_device::timeout(int idx)
 
 void ptm6840_device::set_gate(int idx, int state)
 {
-	if ( (m_mode[idx] == 0) || (m_mode[idx] == 2) || (m_mode[0] == 4) || (m_mode[idx] == 6) )
+	if ((m_mode[idx] & 1) == 0)
 	{
 		if (state == 0 && m_gate[idx])
 		{