From 5c3ded77a778232ffc8c9fd31bbd5cd902a3046d Mon Sep 17 00:00:00 2001
From: hap <happppp@users.noreply.github.com>
Date: Tue, 20 Apr 2021 21:01:55 +0200
Subject: [PATCH] ibm5170: fix validity error

---
 hash/ibm5170.xml                     | 2 +-
 src/devices/machine/chessmachine.cpp | 4 ----
 src/devices/machine/chessmachine.h   | 4 ++--
 src/devices/machine/smartboard.cpp   | 7 -------
 4 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/hash/ibm5170.xml b/hash/ibm5170.xml
index 60fced9d55d..f016676d463 100644
--- a/hash/ibm5170.xml
+++ b/hash/ibm5170.xml
@@ -5822,8 +5822,8 @@ license:CC0
 		<!-- SMARTBRD.EXE: SmartBoard test program V1.04, 30-Dec-94 -->
 		<description>SmartBoard Driver (DOS)</description>
 		<year>1995</year>
-		<info name="usage" value="SmartBoard SB20 or SB30 required." />
 		<publisher>Tasc</publisher>
+		<info name="usage" value="SmartBoard SB20 or SB30 required." />
 		<part name="flop1" interface="floppy_3_5">
 			<dataarea name="flop" size="737280">
 				<rom name="smartboard.img" size="737280" crc="bf1ca15d" sha1="d3d5a45d8cc0c08fdf8e249630da89090f79acbe"/>
diff --git a/src/devices/machine/chessmachine.cpp b/src/devices/machine/chessmachine.cpp
index 08e45ebb581..cd80fce19e5 100644
--- a/src/devices/machine/chessmachine.cpp
+++ b/src/devices/machine/chessmachine.cpp
@@ -62,10 +62,6 @@ void chessmachine_device::device_start()
 	// resolve callbacks
 	m_data_out.resolve_safe();
 
-	// zerofill
-	m_bootrom_enabled = false;
-	m_latch[0] = m_latch[1] = 0;
-
 	// register for savestates
 	save_item(NAME(m_bootrom_enabled));
 	save_item(NAME(m_latch));
diff --git a/src/devices/machine/chessmachine.h b/src/devices/machine/chessmachine.h
index db670ff8dc6..b1a11b459f1 100644
--- a/src/devices/machine/chessmachine.h
+++ b/src/devices/machine/chessmachine.h
@@ -46,11 +46,11 @@ private:
 
 	devcb_write_line m_data_out;
 
-	u8 m_latch[2];
+	u8 m_latch[2] = { 0, 0 };
 	void sync0_callback(void *ptr, s32 param);
 	void sync1_callback(void *ptr, s32 param);
 
-	bool m_bootrom_enabled;
+	bool m_bootrom_enabled = false;
 	void install_bootrom(bool enable);
 	TIMER_DEVICE_CALLBACK_MEMBER(disable_bootrom) { install_bootrom(false); }
 	u32 disable_bootrom_r();
diff --git a/src/devices/machine/smartboard.cpp b/src/devices/machine/smartboard.cpp
index 674568c5365..fe1dc0b5d08 100644
--- a/src/devices/machine/smartboard.cpp
+++ b/src/devices/machine/smartboard.cpp
@@ -58,16 +58,9 @@ enum
 	SB30_BLACK_PAWN8
 };
 
-//**************************************************************************
-//  DEVICE DEFINITIONS
-//**************************************************************************
 
 DEFINE_DEVICE_TYPE(TASC_SB30, tasc_sb30_device, "tasc_sb30", "Tasc SmartBoard SB30")
 
-//**************************************************************************
-//  LIVE DEVICE
-//**************************************************************************
-
 //-------------------------------------------------
 //  tasc_sb30_device - constructor
 //-------------------------------------------------