Begining of PPU emulation.

.metadata/.plugins/org.eclipse.cdt.core/.log

@@ -7,3 +7,4 @@
 *** SESSION Dec 30, 2020 07:33:14.96 -------------------------------------------
 *** SESSION Dec 31, 2020 06:46:47.09 -------------------------------------------
 *** SESSION Dec 31, 2020 19:47:23.71 -------------------------------------------
+*** SESSION Jan 01, 2021 12:04:55.25 -------------------------------------------

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.cdt.debug.core.prefs

@@ -1,2 +1,2 @@
 eclipse.preferences.version=1
-org.eclipse.cdt.debug.core.cDebug.default_source_containers=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\n<sourceLookupDirector>\n    <sourceContainers duplicates\="false">\n        <container memento\="AbsolutePath" typeId\="org.eclipse.cdt.debug.core.containerType.absolutePath"/>\n        <container memento\="programRelativePath" typeId\="org.eclipse.cdt.debug.core.containerType.programRelativePath"/>\n        <container memento\="&lt;?xml version\=&quot;1.0&quot; encoding\=&quot;UTF-8&quot; standalone\=&quot;no&quot;?&gt;&\#10;&lt;project referencedProjects\=&quot;true&quot;/&gt;&\#10;" typeId\="org.eclipse.cdt.debug.core.containerType.project"/>\n    </sourceContainers>\n</sourceLookupDirector>\n
+org.eclipse.cdt.debug.core.cDebug.default_source_containers=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\r\n<sourceLookupDirector>\r\n<sourceContainers duplicates\="false">\r\n<container memento\="AbsolutePath" typeId\="org.eclipse.cdt.debug.core.containerType.absolutePath"/>\r\n<container memento\="programRelativePath" typeId\="org.eclipse.cdt.debug.core.containerType.programRelativePath"/>\r\n<container memento\="&lt;?xml version\=&quot;1.0&quot; encoding\=&quot;UTF-8&quot; standalone\=&quot;no&quot;?&gt;&\#13;&\#10;&lt;project referencedProjects\=&quot;true&quot;/&gt;&\#13;&\#10;" typeId\="org.eclipse.cdt.debug.core.containerType.project"/>\r\n</sourceContainers>\r\n</sourceLookupDirector>\r\n

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.debug.ui.prefs

@@ -1,6 +1,6 @@
 eclipse.preferences.version=1
-org.eclipse.debug.ui.PREF_LAUNCH_PERSPECTIVES=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\n<launchPerspectives/>\n
+org.eclipse.debug.ui.PREF_LAUNCH_PERSPECTIVES=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\r\n<launchPerspectives/>\r\n
-org.eclipse.debug.ui.user_view_bindings=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\n<viewBindings>\n    <view id\="org.eclipse.jdt.debug.ui.DisplayView">\n        <perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="opened"/>\n    </view>\n    <view id\="org.eclipse.debug.ui.DebugView">\n        <perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="closed"/>\n    </view>\n    <view id\="org.eclipse.debug.ui.ExpressionView">\n        <perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="closed"/>\n    </view>\n</viewBindings>\n
+org.eclipse.debug.ui.user_view_bindings=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\r\n<viewBindings>\r\n<view id\="org.eclipse.jdt.debug.ui.DisplayView">\r\n<perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="opened"/>\r\n</view>\r\n<view id\="org.eclipse.debug.ui.DebugView">\r\n<perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="closed"/>\r\n</view>\r\n<view id\="org.eclipse.debug.ui.ExpressionView">\r\n<perspective id\="org.eclipse.debug.ui.DebugPerspective" userAction\="closed"/>\r\n</view>\r\n</viewBindings>\r\n
 pref_state_memento.org.eclipse.debug.ui.BreakpointView=<?xml version\="1.0" encoding\="UTF-8"?>\r\n<VariablesViewMemento org.eclipse.debug.ui.SASH_DETAILS_PART\="315" org.eclipse.debug.ui.SASH_VIEW_PART\="684">\r\n<PRESENTATION_CONTEXT_PROPERTIES IMemento.internal.id\="org.eclipse.debug.ui.BreakpointView">\r\n<BOOLEAN BOOLEAN\="true" IMemento.internal.id\="org.eclipse.debug.ui.check"/>\r\n</PRESENTATION_CONTEXT_PROPERTIES>\r\n</VariablesViewMemento>
 pref_state_memento.org.eclipse.debug.ui.DebugVieworg.eclipse.debug.ui.DebugView=<?xml version\="1.0" encoding\="UTF-8"?>\r\n<DebugViewMemento org.eclipse.debug.ui.BREADCRUMB_DROPDOWN_AUTO_EXPAND\="false"/>
 pref_state_memento.org.eclipse.debug.ui.ExpressionView=<?xml version\="1.0" encoding\="UTF-8"?>\r\n<VariablesViewMemento org.eclipse.debug.ui.SASH_DETAILS_PART\="315" org.eclipse.debug.ui.SASH_VIEW_PART\="684">\r\n<PRESENTATION_CONTEXT_PROPERTIES IMemento.internal.id\="org.eclipse.debug.ui.ExpressionView">\r\n<BOOLEAN BOOLEAN\="true" IMemento.internal.id\="PRESENTATION_SHOW_LOGICAL_STRUCTURES"/>\r\n</PRESENTATION_CONTEXT_PROPERTIES>\r\n</VariablesViewMemento>

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.launching.prefs

@@ -1,2 +1,2 @@
 eclipse.preferences.version=1
-org.eclipse.jdt.launching.PREF_VM_XML=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\n<vmSettings defaultVM\="57,org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType13,1609440543502" defaultVMConnector\="">\n    <vmType id\="org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType">\n        <vm id\="1608703468908" name\="jdk1.8.0_91" path\="/home/sixten/C\:\\Program Files\\Java\\jdk1.8.0_91"/>\n        <vm id\="1609440543502" javadocURL\="https\://docs.oracle.com/en/java/javase/11/docs/api/" name\="jdk" path\="/app/jdk"/>\n    </vmType>\n</vmSettings>\n
+org.eclipse.jdt.launching.PREF_VM_XML=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?>\r\n<vmSettings defaultVM\="57,org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType13,1609499110415" defaultVMConnector\="">\r\n<vmType id\="org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType">\r\n<vm id\="1609499110415" name\="jdk1.8.0_91" path\="C\:\\Program Files\\Java\\jdk1.8.0_91"/>\r\n</vmType>\r\n</vmSettings>\r\n

.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.ui.prefs

@@ -1,6 +1,6 @@
-content_assist_disabled_computers=org.eclipse.jdt.ui.swtProposalCategory\u0000org.eclipse.jdt.ui.textProposalCategory\u0000org.eclipse.jdt.ui.javaPostfixProposalCategory\u0000
+content_assist_disabled_computers=org.eclipse.jdt.ui.textProposalCategory\u0000org.eclipse.jdt.ui.swtProposalCategory\u0000org.eclipse.jdt.ui.javaPostfixProposalCategory\u0000org.eclipse.jdt.ui.javaNoTypeProposalCategory\u0000org.eclipse.jdt.ui.javaTypeProposalCategory\u0000
 content_assist_lru_history=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?><history maxLHS\="100" maxRHS\="10"><lhs name\="java.util.Collection"><rhs name\="java.util.ArrayList"/></lhs><lhs name\="java.lang.Iterable"><rhs name\="java.util.ArrayList"/></lhs><lhs name\="java.util.List"><rhs name\="java.util.ArrayList"/></lhs><lhs name\="javax.swing.ListModel"><rhs name\="javax.swing.DefaultListModel"/></lhs><lhs name\="java.io.OutputStreamWriter"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.io.Writer"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.lang.Appendable"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.io.Closeable"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.lang.AutoCloseable"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.io.Flushable"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="java.io.FileWriter"><rhs name\="java.io.FileWriter"/></lhs><lhs name\="playingcoffee.core.cpu.Registers"><rhs name\="playingcoffee.core.cpu.Registers"/></lhs><lhs name\="playingcoffee.core.opcode.Opcode"><rhs name\="playingcoffee.core.opcode.RotateAOpcode"/><rhs name\="playingcoffee.core.opcode.ReturnOpcode"/><rhs name\="playingcoffee.core.opcode.InterruptOpcode"/><rhs name\="playingcoffee.core.opcode.ComplementOpcode"/><rhs name\="playingcoffee.core.opcode.RestartOpcode"/><rhs name\="playingcoffee.core.opcode.ALU16Opcode"/><rhs name\="playingcoffee.core.opcode.SetCarryOpcode"/><rhs name\="playingcoffee.core.opcode.prefixed.SwapOpcode"/><rhs name\="playingcoffee.core.opcode.prefixed.ResetBitOpcode"/><rhs name\="playingcoffee.core.opcode.prefixed.ShiftOpcode"/></lhs><lhs name\="java.lang.Enum"><rhs name\="playingcoffee.core.opcode.ALU16Opcode$ALU16Type"/></lhs><lhs name\="playingcoffee.core.opcode.ALU16Opcode$ALU16Type"><rhs name\="playingcoffee.core.opcode.ALU16Opcode$ALU16Type"/></lhs><lhs name\="java.awt.image.WritableRenderedImage"><rhs name\="java.awt.image.BufferedImage"/></lhs><lhs name\="java.awt.image.RenderedImage"><rhs name\="java.awt.image.BufferedImage"/></lhs><lhs name\="java.awt.Transparency"><rhs name\="java.awt.image.BufferedImage"/></lhs><lhs name\="java.awt.Image"><rhs name\="java.awt.image.BufferedImage"/></lhs><lhs name\="java.awt.image.BufferedImage"><rhs name\="java.awt.image.BufferedImage"/></lhs><lhs name\="java.lang.Runnable"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/><rhs name\="java.lang.Thread"/><rhs name\="playingcoffee.application.GameBoy"/></lhs><lhs name\="java.awt.Canvas"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="javax.accessibility.Accessible"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="java.awt.Component"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="java.awt.image.ImageObserver"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="java.awt.MenuContainer"><rhs name\="playingcoffee.application.GameBoyViewPanel"/><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="playingcoffee.application.GameBoyViewPanel"><rhs name\="playingcoffee.application.GameBoyViewPanel"/></lhs><lhs name\="playingcoffee.application.Application"><rhs name\="playingcoffee.application.Application"/></lhs><lhs name\="playingcoffee.core.MMU"><rhs name\="playingcoffee.core.MMU"/></lhs><lhs name\="playingcoffee.core.cpu.CPU"><rhs name\="playingcoffee.core.cpu.CPU"/></lhs><lhs name\="java.awt.geom.Dimension2D"><rhs name\="java.awt.Dimension"/></lhs><lhs name\="java.lang.Cloneable"><rhs name\="java.awt.Dimension"/></lhs><lhs name\="java.awt.Dimension"><rhs name\="java.awt.Dimension"/></lhs><lhs name\="playingcoffee.ppu.OAM"><rhs name\="playingcoffee.ppu.OAM"/></lhs><lhs name\="playingcoffee.core.MemorySpace"><rhs name\="playingcoffee.ppu.OAM"/><rhs name\="playingcoffee.ppu.PPURegisters"/><rhs name\="playingcoffee.ppu.VRAM"/><rhs name\="playingcoffee.core.InterruptManager"/><rhs name\="playingcoffee.core.Cartridge"/></lhs><lhs name\="playingcoffee.ppu.PPURegisters"><rhs name\="playingcoffee.ppu.PPURegisters"/></lhs><lhs name\="java.lang.Thread"><rhs name\="java.lang.Thread"/></lhs><lhs name\="playingcoffee.application.GameBoy"><rhs name\="playingcoffee.application.GameBoy"/></lhs><lhs name\="playingcoffee.ppu.VRAM"><rhs name\="playingcoffee.ppu.VRAM"/></lhs><lhs name\="playingcoffee.core.InterruptManager"><rhs name\="playingcoffee.core.InterruptManager"/></lhs></history>
-content_assist_number_of_computers=12
+content_assist_number_of_computers=19
 content_assist_proposals_background=255,255,255
 content_assist_proposals_foreground=0,0,0
 eclipse.preferences.version=1

.metadata/.plugins/org.eclipse.debug.ui/launchConfigurationHistory.xml

@@ -1,35 +1,35 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <launchHistory>
-    <launchGroup id="org.eclipse.debug.ui.launchGroup.debug">
+<launchGroup id="org.eclipse.debug.ui.launchGroup.debug">
-        <mruHistory>
+<mruHistory>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#13;&#10;"/>
-        </mruHistory>
+</mruHistory>
-        <favorites/>
+<favorites/>
-    </launchGroup>
+</launchGroup>
-    <launchGroup id="org.eclipse.debug.ui.launchGroup.profile">
+<launchGroup id="org.eclipse.debug.ui.launchGroup.profile">
-        <mruHistory/>
+<mruHistory/>
-        <favorites/>
+<favorites/>
-    </launchGroup>
+</launchGroup>
-    <launchGroup id="org.eclipse.eclemma.ui.launchGroup.coverage">
+<launchGroup id="org.eclipse.eclemma.ui.launchGroup.coverage">
-        <mruHistory>
+<mruHistory>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#13;&#10;"/>
-        </mruHistory>
+</mruHistory>
-        <favorites/>
+<favorites/>
-    </launchGroup>
+</launchGroup>
-    <launchGroup id="org.eclipse.ui.externaltools.launchGroup">
+<launchGroup id="org.eclipse.ui.externaltools.launchGroup">
-        <mruHistory/>
+<mruHistory/>
-        <favorites/>
+<favorites/>
-    </launchGroup>
+</launchGroup>
-    <launchGroup id="org.eclipse.debug.ui.launchGroup.run">
+<launchGroup id="org.eclipse.debug.ui.launchGroup.run">
-        <mruHistory>
+<mruHistory>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;Application&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;GameBoyTest&quot;/&gt;&#13;&#10;"/>
-            <launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#10;"/>
+<launch memento="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;launchConfiguration local=&quot;true&quot; path=&quot;CPUDebugger&quot;/&gt;&#13;&#10;"/>
-        </mruHistory>
+</mruHistory>
-        <favorites/>
+<favorites/>
-    </launchGroup>
+</launchGroup>
 </launchHistory>

.metadata/.plugins/org.eclipse.jdt.core/savedIndexNames.txt

@@ -1,4 +1,22 @@
-INDEX VERSION 1.131+/home/sixten/Documents/playing-coffee/.metadata/.plugins/org.eclipse.jdt.core
+INDEX VERSION 1.131+C:\dev\playing-coffee\.metadata\.plugins\org.eclipse.jdt.core
-1558221869.index
+3964923001.index
-908895367.index
+3618832045.index
-1819307639.index
+699245563.index
+1583749204.index
+1593673412.index
+2562169395.index
+424447496.index
+2173726253.index
+854353447.index
+3608884278.index
+3992513546.index
+1630848587.index
+1851668056.index
+3550930481.index
+12417758.index
+21486501.index
+4163494320.index
+2709655776.index
+2068962978.index
+3179953034.index
+596698939.index

.metadata/.plugins/org.eclipse.jdt.launching/.install.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <dirs>
-    <entry loc="C:\Program Files\Java\jdk1.8.0_91" stamp="1466445490137"/>
+<entry loc="C:\Program Files\Java\jdk1.8.0_91" stamp="1466445490137"/>
-    <entry loc="/app/jdk" stamp="0"/>
+<entry loc="/app/jdk" stamp="0"/>
 </dirs>

.metadata/.plugins/org.eclipse.jdt.launching/libraryInfos.xml

@@ -1,23 +1,42 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <libraryInfos>
-    <libraryInfo home="C:\Program Files\Java\jdk1.8.0_91" version="1.8.0_91">
+<libraryInfo home="C:\Program Files\Java\jdk1.8.0_91" version="1.8.0_91">
-        <bootpath>
+<bootpath>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\resources.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\resources.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\rt.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\rt.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\sunrsasign.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\sunrsasign.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jsse.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jsse.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jce.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jce.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\charsets.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\charsets.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jfr.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jfr.jar"/>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\classes"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\classes"/>
-        </bootpath>
+</bootpath>
-        <extensionDirs>
+<extensionDirs>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\ext"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\ext"/>
-            <entry path="C:\WINDOWS\Sun\Java\lib\ext"/>
+<entry path="C:\WINDOWS\Sun\Java\lib\ext"/>
-        </extensionDirs>
+</extensionDirs>
-        <endorsedDirs>
+<endorsedDirs>
-            <entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\endorsed"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\endorsed"/>
-        </endorsedDirs>
+</endorsedDirs>
-    </libraryInfo>
+</libraryInfo>
-    <libraryInfo home="/app/jdk" version="11.0.7"/>
+<libraryInfo home="/app/jdk" version="11.0.7"/>
+<libraryInfo home="C:\Program Files\Java\jdk1.8.0_91\jre" version="1.8.0_91">
+<bootpath>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\resources.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\rt.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\sunrsasign.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jsse.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jce.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\charsets.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\jfr.jar"/>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\classes"/>
+</bootpath>
+<extensionDirs>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\ext"/>
+<entry path="C:\WINDOWS\Sun\Java\lib\ext"/>
+</extensionDirs>
+<endorsedDirs>
+<entry path="C:\Program Files\Java\jdk1.8.0_91\jre\lib\endorsed"/>
+</endorsedDirs>
+</libraryInfo>
 </libraryInfos>

.metadata/version.ini

@@ -1,3 +1,3 @@
-#Thu Dec 31 19:48:20 CET 2020
+#Sat Jan 02 08:08:01 CET 2021
 org.eclipse.core.runtime=2
-org.eclipse.platform=4.16.0.v20200604-0540
+org.eclipse.platform=4.13.0.v20190916-1045

playing-coffee/src/main/java/playingcoffee/application/Application.java

@@ -18,7 +18,7 @@ public class Application extends Canvas implements Runnable {
 	private GameBoy gameBoy;
 	
 	public Application() {
-		setPreferredSize(new Dimension(640, 288));
+		setPreferredSize(new Dimension(320, 288));
 	
 		gameBoy = new GameBoy();
 		gameBoy.start();
@@ -33,60 +33,39 @@ public class Application extends Canvas implements Runnable {
 		
 		Graphics g = bs.getDrawGraphics();
 		
-		g.setColor(Color.WHITE);
+		int[] framebuffer = gameBoy.getPPU().getFrameBuffer();
-		g.fillRect(0, 0, getWidth(), getHeight());
 		
-		int lcdControl = (gameBoy.getMMU().read(0xFF40));
+		for (int x = 0; x < 160; x++) {
+			for (int y = 0; y < 144; y++) {
+				g.setColor(new Color(framebuffer[x + y * 160]));
+				g.fillRect(x * 2, y * 2, 2, 2);
+			}
+		}
 		
-		int tileDataOffset = ((lcdControl & 0x10) != 0) ? 0x8000 : 0x8800;
+//		g.setColor(Color.WHITE);
-		int bgTileMap = ((lcdControl & 0x8) != 0) ? 0x9C00 : 0x9800;
+//		g.fillRect(0, 0, getWidth(), getHeight());
-		
+//		
-		/*for (int tile = 0; tile < 512; tile++) {
+//		int lcdControl = (gameBoy.getMMU().read(0xFF40));
-			int tileIndex = tile;
+//		
-			for (int y = 0; y < 8; y++) {
+//		int tileDataOffset = ((lcdControl & 0x10) != 0) ? 0x8000 : 0x8800;
-				for (int n = 0; n < 8; n++) {
+//		int bgTileMap = ((lcdControl & 0x8) != 0) ? 0x9C00 : 0x9800;
-					int value = (((gameBoy.getMMU().read(0x8000 + y * 2 + tileIndex * 16 + 1) >> (7 - n)) & 1) << 1) | 
+//		
-							    (((gameBoy.getMMU().read(0x8000 + y * 2 + tileIndex * 16)     >> (7 - n)) & 1));
+//		for (int tileY = 0; tileY < 32; tileY++) {
-					
+//			for (int tileX = 0; tileX < 32; tileX++) {
-					g.setColor(new Color(value * 64, value * 64, value * 64));
+//				int tileIndex = gameBoy.getPPU().getVRAM().background0[tileX + tileY * 32];
-					//if (value != 0x0)
+//				
-						//g.fillRect((n + (tile % 16) * 8), (y + (tile / 16) * 8), 1, 1);
+//				for (int y = 0; y < 8; y++) {
-				}
+//					for (int n = 0; n < 8; n++) {
-			}
+//						int value = (((gameBoy.getMMU().read(0x9000 + y * 2 + (tileIndex > 127 ? tileIndex - 256 : tileIndex) * 16 + 1) >> (7 - n)) & 1) << 1) | 
-		}*/
+//								    (((gameBoy.getMMU().read(0x9000 + y * 2 + (tileIndex > 127 ? tileIndex - 256 : tileIndex) * 16)     >> (7 - n)) & 1));
-		
+//						
-		//if ((lcdControl & 0x80) != 0) {
+//						g.setColor(new Color(value * 64, value * 64, value * 64));
-		for (int tileY = 0; tileY < 32; tileY++) {
+//						if (value != 0x0)
-			for (int tileX = 0; tileX < 32; tileX++) {
+//							g.fillRect((n + (tileX) * 8 - gameBoy.getPPU().getRegisters().scrollX) * 2, (y + (tileY) * 8 - gameBoy.getPPU().getRegisters().scrollY) * 2, 2, 2);
-				int tileIndex = gameBoy.getMMU().read(0x9800 + (tileX + tileY * 32));
+//					}
-				for (int y = 0; y < 8; y++) {
+//				}
-					for (int n = 0; n < 8; n++) {
+//			}
-						int value = (((gameBoy.getMMU().read(tileDataOffset + y * 2 + tileIndex * 16 + 1) >> (7 - n)) & 1) << 1) | 
+//		}
-								    (((gameBoy.getMMU().read(tileDataOffset + y * 2 + tileIndex * 16)     >> (7 - n)) & 1));
-						
-						g.setColor(new Color(value * 64, value * 64, value * 64));
-						if (value != 0x0)
-							g.fillRect((n + (tileX) * 8 - gameBoy.getPPU().getRegisters().scrollX) * 2, (y + (tileY) * 8 - gameBoy.getPPU().getRegisters().scrollY) * 2, 2, 2);
-					}
-				}
-			}
-		}
-		for (int tileY = 0; tileY < 32; tileY++) {
-			for (int tileX = 0; tileX < 32; tileX++) {
-				int tileIndex = gameBoy.getMMU().read(0x9C00 + (tileX + tileY * 32));
-				for (int y = 0; y < 8; y++) {
-					for (int n = 0; n < 8; n++) {
-						int value = (((gameBoy.getMMU().read(tileDataOffset + y * 2 + tileIndex * 16 + 1) >> (7 - n)) & 1) << 1) | 
-								    (((gameBoy.getMMU().read(tileDataOffset + y * 2 + tileIndex * 16)     >> (7 - n)) & 1));
-						
-						g.setColor(new Color(value * 64, value * 64, value * 64));
-						if (value != 0x0)
-							g.fillRect((n + (tileX) * 8 - gameBoy.getPPU().getRegisters().scrollX + 160) * 2, (y + (tileY) * 8 - gameBoy.getPPU().getRegisters().scrollY) * 2, 2, 2);
-					}
-				}
-			}
-		}
-		//}
 		
 		g.dispose();
 		

playing-coffee/src/main/java/playingcoffee/application/GameBoy.java

@@ -1,6 +1,6 @@
 package playingcoffee.application;
 
-import playingcoffee.core.Cartridge;
+import playingcoffee.cartridge.Cartridge;
 import playingcoffee.core.InterruptManager;
 import playingcoffee.core.MMU;
 import playingcoffee.core.cpu.CPU;
@@ -27,7 +27,7 @@ public class GameBoy implements Runnable {
 	
 	public void init() {
 		mmu.connectMemorySpace(interruptManager);
-		mmu.connectMemorySpace(new Cartridge("roms/cpu_instrs.gb"));	
+		mmu.connectMemorySpace(new Cartridge("roms/drmario.gb").getMBC());	
 	}
 	
 	public void start() {
@@ -61,6 +61,11 @@ public class GameBoy implements Runnable {
 				cpu.clock();
 				ppu.clock();
 				interruptManager.clock();
+			
+				if (mmu.read(0xFF02) == 0x81) {
+					System.out.print((char)mmu.read(0xFF01));
+					mmu.write(0, 0xFF02);
+				}
 			}
 
 			try {

playing-coffee/src/main/java/playingcoffee/cartridge/Cartridge.java

@@ -1,4 +1,4 @@
-package playingcoffee.core;
+package playingcoffee.cartridge;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
@@ -7,7 +7,7 @@ import java.nio.file.Paths;
 
 import playingcoffee.log.Log;
 
-public class Cartridge implements MemorySpace {
+public class Cartridge {
 
 	private int[] rom;
 	
@@ -52,7 +52,7 @@ public class Cartridge implements MemorySpace {
 		case 6: ramSize = 64 * 1024; break;
 		}
 		
-		this.mbc = MBC.create(this.rom[0x0147]);
+		this.mbc = MBC.create(this.rom[0x0147], this.rom);
 		
 		Log.info("ROM Name: %s", title);
 		Log.info("Requires GBC: %s", isGameBoyColor);
@@ -61,20 +61,8 @@ public class Cartridge implements MemorySpace {
 		Log.info("Cartridge Type: 0x%2x", this.rom[0x0147]);
 	}
 	
-	@Override
+	public MBC getMBC() {
-	public int read(int address) {
+		return mbc;
-		return mbc.read(rom, address);
-	}
-
-	@Override
-	public void write(int value, int address) {
-		//Log.warn("Attempting to write to ROM at address: 0x%4x.", address);
-		mbc.write(value, address);
-	}
-
-	@Override
-	public boolean inMemorySpace(int address) {
-		return address >= 0x0000 && address <= 0x7FFF;
 	}
 
 }

playing-coffee/src/main/java/playingcoffee/cartridge/MBC.java

@@ -0,0 +1,23 @@
+package playingcoffee.cartridge;
+
+import playingcoffee.core.MemorySpace;
+
+public abstract class MBC implements MemorySpace {
+
+	protected int[] rom;
+	
+	protected MBC(int[] rom) {
+		this.rom = rom;
+	}
+	
+	public static MBC create(int type, int[] rom) {
+		switch (type) {
+		case 0: return new ROMOnlyMBC(rom);
+		case 1: return new MBC1(false, false, rom);
+		case 2: return new MBC1(true, false, rom);
+		case 3: return new MBC1(true, true, rom);
+		}
+		
+		throw new IllegalArgumentException("Unsupported Maapper!");
+	}
+}

playing-coffee/src/main/java/playingcoffee/cartridge/MBC1.java

@@ -1,11 +1,21 @@
-package playingcoffee.core;
+package playingcoffee.cartridge;
 
-public class MBC1 implements MBC {
+public class MBC1 extends MBC {
+
+	private boolean ram;
+	private boolean battery;
 	
 	private int bank = 1;
 	
+	public MBC1(boolean hasRAM, boolean hasBattery, int[] rom) {
+		super(rom);
+		
+		this.ram = hasRAM;
+		this.battery = hasBattery;
+	}
+
 	@Override
-	public int read(int[] rom, int address) {
+	public int read(int address) {
 		if (address >= 0x0000 && address <= 0x3FFF) {
 			return rom[address];
 		} else if (address >= 0x4000 && address <= 0x7FFF) {
@@ -21,4 +31,10 @@ public class MBC1 implements MBC {
 		}
 	}
 
+	@Override
+	public boolean inMemorySpace(int address) {
+		return address >= 0x0000 && address <= 0x7FFF;
+	}
+
+	
 }

playing-coffee/src/main/java/playingcoffee/cartridge/ROMOnlyMBC.java

@@ -0,0 +1,27 @@
+package playingcoffee.cartridge;
+
+import playingcoffee.log.Log;
+
+public class ROMOnlyMBC extends MBC {
+
+	protected ROMOnlyMBC(int[] rom) {
+		super(rom);
+	}
+
+	@Override
+	public int read(int address) {
+		return rom[address];
+	}
+
+	@Override
+	public void write(int value, int address) {
+		// Don't do anything
+		Log.warn("Attempting to write to rom at address: 0x%4x.", address);
+	}
+
+	@Override
+	public boolean inMemorySpace(int address) {
+		return address >= 0x0000 && address <= 0x7FFF;
+	}
+
+}

playing-coffee/src/main/java/playingcoffee/core/MBC.java

@@ -1,16 +0,0 @@
-package playingcoffee.core;
-
-public interface MBC {
-
-	public int read(int[] rom, int address);
-	public void write(int value, int address);
-	
-	public static MBC create(int type) {
-		switch (type) {
-		case 0: return new ROMOnlyMBC();
-		case 1: return new MBC1();
-		}
-		
-		throw new IllegalArgumentException("Unsupported Maapper!");
-	}
-}

playing-coffee/src/main/java/playingcoffee/core/ROMOnlyMBC.java

@@ -1,18 +0,0 @@
-package playingcoffee.core;
-
-import playingcoffee.log.Log;
-
-public class ROMOnlyMBC implements MBC {
-
-	@Override
-	public int read(int[] rom, int address) {
-		return rom[address];
-	}
-
-	@Override
-	public void write(int value, int address) {
-		// Don't do anything
-		Log.warn("Attempting to write to rom at address: 0x%4x.", address);
-	}
-
-}

playing-coffee/src/main/java/playingcoffee/core/opcode/BCDOpcode.java

@@ -1,12 +1,31 @@
 package playingcoffee.core.opcode;
 
 import playingcoffee.core.MMU;
+import playingcoffee.core.cpu.Flags;
 import playingcoffee.core.cpu.Registers;
 
 public class BCDOpcode implements Opcode {
 
 	@Override
 	public int run(Registers registers, MMU mmu) {
+		// TODO: Learn what this opcode actually does.
+		
+		int s = registers.getA();
+		
+		if (registers.getFlags().get(Flags.NEGATIVE)) {
+			if (registers.getFlags().get(Flags.HALF_CARRY)) s = (s - 0x06) & 0xFF;
+			if (registers.getFlags().get(Flags.CARRY)) s = (s - 0x60) & 0xFFFF;
+		} else {
+			if (registers.getFlags().get(Flags.HALF_CARRY) || (s & 0xF) > 9) s = (s + 0x06) & 0xFFFF;
+			if (registers.getFlags().get(Flags.CARRY) || s > 0x9F) s = (s + 0x60) & 0xFFFF;	
+		}
+		
+		registers.setA(s);
+		
+		registers.getFlags().set(Flags.ZERO, registers.getA() == 0);
+		registers.getFlags().set(Flags.HALF_CARRY, false);
+		registers.getFlags().set(Flags.CARRY, s >= 0x100);
+		
 		return 0;
 	}
 

playing-coffee/src/main/java/playingcoffee/log/Log.java

@@ -63,7 +63,7 @@ public class Log {
 		
 		ansiColor = useColors ? ansiColor : "";
 		
-		System.out.println(ansiColor + finalMessage);
+		//System.out.println(ansiColor + finalMessage);
 		try {
 			fileWriter.write(finalMessage + "\n");
 		} catch (IOException e) {

playing-coffee/src/main/java/playingcoffee/ppu/PPU.java

@@ -13,12 +13,21 @@ public class PPU {
 	
 	private int clockCount = 0;
 	
+	private int[] framebuffer;
+	
+	public static final int HBLANK = 0;
+	public static final int VBLANK = 1;
+	public static final int OAM_SEARCH = 2;
+	public static final int PIXEL_TRANSFER = 3;
+	
 	public PPU(final MMU mmu, final InterruptManager interruptManager) {
 		this.mmu = mmu;
 		this.interruptManager = interruptManager;
 		
 		registers = new PPURegisters(this);
-		vram = new VRAM();
+		vram = new VRAM(this);
+		
+		framebuffer = new int[160 * 144];
 		
 		this.mmu.connectMemorySpace(registers);
 		this.mmu.connectMemorySpace(vram);
@@ -29,26 +38,29 @@ public class PPU {
 	}
 	
 	public void OAMSeach() {
-		registers.setLCDCMode(2);
+		registers.setLCDCMode(OAM_SEARCH);
 	}
 	
 	public void pixelTransfer() {
-		registers.setLCDCMode(3);		
+		registers.setLCDCMode(PIXEL_TRANSFER);
 	}
 	
 	public void HBlank() {
-		registers.setLCDCMode(0);		
+		registers.setLCDCMode(HBLANK);
 	}	
 	
 	public void VBlank() {
-		registers.setLCDCMode(1);
+		registers.setLCDCMode(VBLANK);
 	}
 	
 	public void clock() {
 		registers.lcdcYCoord = clockCount / 114;
 		
-		if (clockCount == 114 * 144)
+		if (clockCount == 144 * 114) renderToFramebuffer();
+		if (clockCount == 114 * 144) {
 			interruptManager.requestInterrupt(InterruptManager.VBLANK);
+		}
+
 		
 		if (clockCount < 114 * 144) {
 			if (clockCount % 114 < 20) OAMSeach();
@@ -66,12 +78,53 @@ public class PPU {
 		}
 	}
 
+	private void putPixel(int pixel, int x, int y) {
+		if (x >= 0 && x < 160 && y >= 0 && y < 144) framebuffer[x + y * 160] = pixel;
+	}
+	
+	private void putTile(int address, int screenX, int screenY) {
+		for (int y = 0; y < 8; y++) {
+			for (int n = 0; n < 8; n++) {
+				int value = ((vram.vram[address + y * 2] >> (7 - n)) & 1) |
+						   (((vram.vram[address + y * 2 + 1] >> (7 - n)) & 1) << 1);
+			
+				int color = (value * 64) | ((value * 64) << 8) | ((value * 64) << 16);
+				
+				putPixel(color, screenX + n, screenY + y);
+			}
+		}
+	}
+	
+	private void renderToFramebuffer() {
+		boolean backgroundTileDataSelect = (registers.lcdControl & 0x10) != 0;
+		int[] backgroundMap = (registers.lcdControl & 0x8) != 0 ? vram.background1 : vram.background0;
+		
+		for (int tileY = 0; tileY < 32; tileY++) {
+			for (int tileX = 0; tileX < 32; tileX++) {
+				int tileIndex = backgroundMap[tileX + tileY * 32];
+				
+				int tileAddress = tileIndex * 16;
+				
+				if (!backgroundTileDataSelect) {
+					if (tileIndex >= 128) tileIndex -= 256;
+					tileAddress = 0x1000 + tileIndex * 16;
+				}
+				
+				putTile(tileAddress, tileX * 8 - registers.scrollX, tileY * 8 - registers.scrollY);
+			}
+		}
+	}
+	
 	public PPURegisters getRegisters() {
 		return registers;
 	}
 
-	public VRAM getVram() {
+	public VRAM getVRAM() {
 		return vram;
 	}
 
+	public int[] getFrameBuffer() {
+		return framebuffer;
+	}
+	
 }

playing-coffee/src/main/java/playingcoffee/ppu/PPURegisters.java

@@ -25,6 +25,10 @@ public class PPURegisters implements MemorySpace {
 		lcdcStatus = (lcdcStatus & 0xFC) | mode;
 	}
 	
+	public int getLCDCMode() {
+		return lcdcStatus & 0x3;
+	}
+	
 	public int read(int address) {
 		switch (address) {
 			case 0xFF40: return lcdControl;

playing-coffee/src/main/java/playingcoffee/ppu/VRAM.java

@@ -4,16 +4,27 @@ import playingcoffee.core.MemorySpace;
 
 public class VRAM implements MemorySpace {
 
+	public int[] vram;
+	
 	public int[] background0;
 	public int[] background1;
 	
-	public VRAM() {
+	private final PPU ppu;
+	
+	public VRAM(final PPU ppu) {
+		vram = new int[0x1800];
+		
 		background0 = new int[32 * 32];
 		background1 = new int[32 * 32];
+	
+		this.ppu = ppu;
 	}
 	
 	@Override
 	public int read(int address) {
+		if (ppu.getRegisters().getLCDCMode() == PPU.PIXEL_TRANSFER) return 0xFF;
+		
+		if (address >= 0x8000 && address <= 0x97FF) return vram[address - 0x8000];
 		if (address >= 0x9800 && address <= 0x9BFF) return background0[address % (32 * 32)];
 		if (address >= 0x9C00 && address <= 0x9FFF) return background1[address % (32 * 32)];
 		
@@ -22,14 +33,16 @@ public class VRAM implements MemorySpace {
 
 	@Override
 	public void write(int value, int address) {
+		if (ppu.getRegisters().getLCDCMode() == PPU.PIXEL_TRANSFER) return;
+		
+		if (address >= 0x8000 && address <= 0x97FF) vram[address - 0x8000] = value;
 		if (address >= 0x9800 && address <= 0x9BFF) background0[address % (32 * 32)] = value;
 		if (address >= 0x9C00 && address <= 0x9FFF) background1[address % (32 * 32)] = value;
-		
 	}
 
 	@Override
 	public boolean inMemorySpace(int address) {
-		return address >= 0x9800 && address <= 0x9FFF;
+		return address >= 0x8000 && address <= 0x9FFF;
 	}
 
 }