1 files changed, 91 insertions, 0 deletions
diff --git a/src/electronics/components/fulladder.cpp b/src/electronics/components/fulladder.cpp
new file mode 100644
index 0000000..ad5e40c
--- /dev/null
+++ b/src/electronics/components/fulladder.cpp
@@ -0,0 +1,91 @@
+/***************************************************************************
+ *   Copyright (C) 2004 by David Saxton                                    *
+ *   david@bluehaze.org                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#include "fulladder.h"
+
+#include "logic.h"
+#include "libraryitem.h"
+
+#include <kiconloader.h>
+#include <klocale.h>
+
+
+Item* FullAdder::construct( ItemDocument *itemDocument, bool newItem, const char *id )
+{
+	return new FullAdder( (ICNDocument*)itemDocument, newItem, id );
+}
+
+LibraryItem* FullAdder::libraryItem()
+{
+	return new LibraryItem(
+		QString("ec/adder"),
+		i18n("Adder"),
+		i18n("Integrated Circuits"),
+		"ic1.png",
+		LibraryItem::lit_component,
+		FullAdder::construct
+			);
+}
+
+FullAdder::FullAdder( ICNDocument *icnDocument, bool newItem, const char *id )
+	: Component( icnDocument, newItem, (id) ? id : "adder" )
+{
+	m_name = i18n("Adder");
+// 	m_desc = i18n("Insert missing adder help here.");
+
+	ALogic = BLogic = inLogic = 0l;
+	outLogic = SLogic = 0l;
+
+	QStringList pins = QStringList::split( ',', "A,B,>,,S,C", true );
+	initDIPSymbol( pins, 48 );
+	initDIP(pins);
+	
+	ECNode *node;
+	
+	node =  ecNodeWithID("S");
+	SLogic = createLogicOut( node, false );
+	
+	node = ecNodeWithID("C");
+	outLogic = createLogicOut( node, false );
+	
+	node = ecNodeWithID("A");
+	ALogic = createLogicIn(node);
+	
+	node = ecNodeWithID("B");
+	BLogic = createLogicIn(node);
+	
+	node = ecNodeWithID(">");
+	inLogic = createLogicIn(node);
+	
+	
+	ALogic->setCallback( this, (CallbackPtr)(&FullAdder::inStateChanged) );
+	BLogic->setCallback( this, (CallbackPtr)(&FullAdder::inStateChanged) );
+	inLogic->setCallback( this, (CallbackPtr)(&FullAdder::inStateChanged) );
+}
+
+FullAdder::~FullAdder()
+{
+}
+
+
+void FullAdder::inStateChanged( bool /*state*/ )
+{
+	const bool A = ALogic->isHigh();
+	const bool B = BLogic->isHigh();
+	const bool in = inLogic->isHigh();
+	
+	const bool out = (!A && B && in) || (A && !B && in) || (A && B);
+	const bool S = (!A && !B && in) || (!A && B && !in) || (A && !B && !in) || (A && B && in);
+	
+	SLogic->setHigh(S);
+	outLogic->setHigh(out);
+}
+
+