diff --git a/.gitignore b/.gitignore
index b216c68..28797a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,8 @@
 *.out
 *.elf
 *.bin
+*.cdi
+*.iso
 main
 print_class
-__pycache__
\ No newline at end of file
+__pycache__
diff --git a/Makefile.dreamcast.mk b/Makefile.dreamcast.mk
index e5152e0..6ccfc66 100644
--- a/Makefile.dreamcast.mk
+++ b/Makefile.dreamcast.mk
@@ -15,6 +15,7 @@ CARCH = -m4-single -ml
 include dreamcast/base.mk
 include dreamcast/common.mk
 include dreamcast/headers.mk
+include dreamcast/ip.mk
 
 include java.mk
 
@@ -50,5 +51,37 @@ LIBGCC_OBJ = \
 
 include classpath.mk
 
+GDROM_JVM_BOOT_OBJ = \
+	$(LIB)/example/gdrom_jvm_boot.o \
+	$(LIB)/sh7091/serial.o
+
+
+boot.elf: LDSCRIPT = $(LIB)/ip.lds
+boot.elf: $(IP_OBJ) $(START_OBJ) $(GDROM_JVM_BOOT_OBJ)
+
+zero.bin:
+	dd if=/dev/zero of=$@ bs=2048 count=1
+
+jvm.iso: boot.bin main.bin
+	mkisofs \
+		-C 0,11702 \
+		-sysid     "SEGA SEGAKATANA" \
+		-volid     "SAMPLE_GAME_TITLE" \
+		-volset    "SAMPLE_GAME_TITLE" \
+		-publisher "SEGA ENTERPRISES, LTD." \
+		-preparer  "CRI CD CRAFT VER.2.27" \
+		-copyright "COPYRIGH.TXT" \
+		-abstract  "ABSTRACT.TXT" \
+		-biblio    "BIBLIOGR.TXT" \
+		-G boot.bin \
+		-o $@ \
+		-graft-points \
+		/0JVM.BIN=./main.bin \
+		/1ST_READ.BIN=zero.bin \
+		/=$(LIB)/COPYRIGH.TXT \
+		/=$(LIB)/ABSTRACT.TXT \
+		/=$(LIB)/BIBLIOGR.TXT
+
+
 main.elf: LDSCRIPT = $(LIB)/main.lds
 main.elf: $(START_OBJ) $(OBJ) $(MAIN_OBJ) $(MAIN_DREAMCAST_OBJ) $(LIBGCC_OBJ) $(CLASS_PATH)
diff --git a/c/classpath.h b/c/classpath.h
index 25b8f66..56d2392 100644
--- a/c/classpath.h
+++ b/c/classpath.h
@@ -1,5 +1,3 @@
-#include "example/DreamcastVideo2.class.h"
-#include "example/DreamcastVideo.class.h"
 #include "example/GdromExtentReader.class.h"
 #include "example/GdromTest.class.h"
 #include "filesystem/iso9660/ByteParser.class.h"
@@ -12,89 +10,17 @@
 #include "java/lang/Byte.class.h"
 #include "java/lang/Character.class.h"
 #include "java/lang/DecimalDigits.class.h"
-#include "java/lang/Double.class.h"
-#include "java/lang/Float.class.h"
 #include "java/lang/Integer.class.h"
-#include "java/lang/Long.class.h"
-#include "java/lang/Math.class.h"
 #include "java/lang/Object.class.h"
 #include "java/lang/Short.class.h"
 #include "java/lang/String.class.h"
 #include "java/lang/System.class.h"
 #include "java/misc/Memory.class.h"
-#include "java/misc/Resource.class.h"
-#include "java/nio/Buffer.class.h"
-#include "java/nio/ByteBuffer.class.h"
-#include "java/nio/ByteOrder.class.h"
-#include "model/FacePTN.class.h"
-#include "model/ModelObject.class.h"
-#include "model/UntitledModel.class.h"
-#include "model/Vec2.class.h"
-#include "model/Vec3.class.h"
-#include "sega/dreamcast/g2_if/G2IF.class.h"
 #include "sega/dreamcast/gdrom/G1IF.class.h"
 #include "sega/dreamcast/gdrom/GdromBits.class.h"
 #include "sega/dreamcast/gdrom/Gdrom.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_open.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_play.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_read2.class.h"
 #include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_read.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_scan.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_scd.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_seek.class.h"
 #include "sega/dreamcast/gdrom/GdromCommandPacketFormat.class.h"
 #include "sega/dreamcast/gdrom/GdromCommandPacketFormat_get_toc.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_req_error.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_req_mode.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_req_ses.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_req_stat.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_set_mode.class.h"
-#include "sega/dreamcast/gdrom/GdromCommandPacketFormat_test_unit.class.h"
 #include "sega/dreamcast/gdrom/GdromCommandPacketInterface.class.h"
 #include "sega/dreamcast/gdrom/GdromProtocol.class.h"
-#include "sega/dreamcast/holly/Background.class.h"
-#include "sega/dreamcast/holly/CoreBits.class.h"
-#include "sega/dreamcast/holly/Core.class.h"
-#include "sega/dreamcast/holly/Holly.class.h"
-#include "sega/dreamcast/holly/ISPTSP.class.h"
-#include "sega/dreamcast/holly/RegionArray.class.h"
-#include "sega/dreamcast/holly/RegionArray_OPBSize.class.h"
-#include "sega/dreamcast/holly/TABits.class.h"
-#include "sega/dreamcast/holly/TAFIFOPolygonConverter.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_end_of_list.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_modifier_volume.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_object_list_set.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_polygon_type_0.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_polygon_type_1.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_polygon_type_2.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_polygon_type_3.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_polygon_type_4.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_sprite.class.h"
-#include "sega/dreamcast/holly/TAGlobalParameter_user_tile_clip.class.h"
-#include "sega/dreamcast/holly/TAParameter.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_modifier_volume.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_0.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_10.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_11.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_12.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_13.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_14.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_1.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_2.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_3.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_4.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_5.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_6.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_7.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_8.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_polygon_type_9.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_sprite_type_0.class.h"
-#include "sega/dreamcast/holly/TAVertexParameter_sprite_type_1.class.h"
-#include "sega/dreamcast/holly/TextureMemoryAllocation.class.h"
-#include "sega/dreamcast/maple/MapleIF.class.h"
-#include "sega/dreamcast/MemoryMap.class.h"
-#include "sega/dreamcast/pvr_if/PVRIF.class.h"
-#include "sega/dreamcast/systembus/SystembusBits.class.h"
-#include "sega/dreamcast/systembus/Systembus.class.h"
diff --git a/c/classpath.inc.c b/c/classpath.inc.c
index 4a4a92f..d3dccd3 100644
--- a/c/classpath.inc.c
+++ b/c/classpath.inc.c
@@ -1,5 +1,3 @@
-(const uint8_t *)&_binary_example_DreamcastVideo2_class_start,
-(const uint8_t *)&_binary_example_DreamcastVideo_class_start,
 (const uint8_t *)&_binary_example_GdromExtentReader_class_start,
 (const uint8_t *)&_binary_example_GdromTest_class_start,
 (const uint8_t *)&_binary_filesystem_iso9660_ByteParser_class_start,
@@ -12,89 +10,17 @@
 (const uint8_t *)&_binary_java_lang_Byte_class_start,
 (const uint8_t *)&_binary_java_lang_Character_class_start,
 (const uint8_t *)&_binary_java_lang_DecimalDigits_class_start,
-(const uint8_t *)&_binary_java_lang_Double_class_start,
-(const uint8_t *)&_binary_java_lang_Float_class_start,
 (const uint8_t *)&_binary_java_lang_Integer_class_start,
-(const uint8_t *)&_binary_java_lang_Long_class_start,
-(const uint8_t *)&_binary_java_lang_Math_class_start,
 (const uint8_t *)&_binary_java_lang_Object_class_start,
 (const uint8_t *)&_binary_java_lang_Short_class_start,
 (const uint8_t *)&_binary_java_lang_String_class_start,
 (const uint8_t *)&_binary_java_lang_System_class_start,
 (const uint8_t *)&_binary_java_misc_Memory_class_start,
-(const uint8_t *)&_binary_java_misc_Resource_class_start,
-(const uint8_t *)&_binary_java_nio_Buffer_class_start,
-(const uint8_t *)&_binary_java_nio_ByteBuffer_class_start,
-(const uint8_t *)&_binary_java_nio_ByteOrder_class_start,
-(const uint8_t *)&_binary_model_FacePTN_class_start,
-(const uint8_t *)&_binary_model_ModelObject_class_start,
-(const uint8_t *)&_binary_model_UntitledModel_class_start,
-(const uint8_t *)&_binary_model_Vec2_class_start,
-(const uint8_t *)&_binary_model_Vec3_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_g2_if_G2IF_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_G1IF_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromBits_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_Gdrom_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_open_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_play_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_read2_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_read_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_scan_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_scd_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_cd_seek_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_get_toc_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_req_error_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_req_mode_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_req_ses_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_req_stat_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_set_mode_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketFormat_test_unit_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromCommandPacketInterface_class_start,
 (const uint8_t *)&_binary_sega_dreamcast_gdrom_GdromProtocol_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_Background_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_CoreBits_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_Core_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_Holly_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_ISPTSP_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_RegionArray_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_RegionArray_OPBSize_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TABits_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAFIFOPolygonConverter_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_end_of_list_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_modifier_volume_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_object_list_set_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_polygon_type_0_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_polygon_type_1_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_polygon_type_2_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_polygon_type_3_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_polygon_type_4_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_sprite_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAGlobalParameter_user_tile_clip_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAParameter_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_modifier_volume_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_0_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_10_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_11_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_12_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_13_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_14_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_1_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_2_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_3_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_4_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_5_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_6_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_7_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_8_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_polygon_type_9_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_sprite_type_0_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TAVertexParameter_sprite_type_1_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_holly_TextureMemoryAllocation_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_maple_MapleIF_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_MemoryMap_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_pvr_if_PVRIF_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_systembus_SystembusBits_class_start,
-(const uint8_t *)&_binary_sega_dreamcast_systembus_Systembus_class_start,
diff --git a/c/resources.inc.c b/c/resources.inc.c
index a87d552..6a7f388 100644
--- a/c/resources.inc.c
+++ b/c/resources.inc.c
@@ -13,6 +13,7 @@ struct resource {
 };
 
 static struct resource resources[] = {
+  /*
   {
     .name = (const uint8_t *)"images/java_text",
     .name_length = 16,
@@ -25,6 +26,7 @@ static struct resource resources[] = {
     .buf = (const int32_t *)&_binary_images_java_cup_data_start,
     .buf_length = (int32_t)&_binary_images_java_cup_data_size
   },
+  */
   {
     .name = (const uint8_t *)"images/java_powered",
     .name_length = 19,
diff --git a/classpath.mk b/classpath.mk
index cccec1f..2eeb92c 100644
--- a/classpath.mk
+++ b/classpath.mk
@@ -1,6 +1,4 @@
 CLASS_PATH = \
-	example/DreamcastVideo2.class.o \
-	example/DreamcastVideo.class.o \
 	example/GdromExtentReader.class.o \
 	example/GdromTest.class.o \
 	filesystem/iso9660/ByteParser.class.o \
@@ -13,89 +11,17 @@ CLASS_PATH = \
 	java/lang/Byte.class.o \
 	java/lang/Character.class.o \
 	java/lang/DecimalDigits.class.o \
-	java/lang/Double.class.o \
-	java/lang/Float.class.o \
 	java/lang/Integer.class.o \
-	java/lang/Long.class.o \
-	java/lang/Math.class.o \
 	java/lang/Object.class.o \
 	java/lang/Short.class.o \
 	java/lang/String.class.o \
 	java/lang/System.class.o \
 	java/misc/Memory.class.o \
-	java/misc/Resource.class.o \
-	java/nio/Buffer.class.o \
-	java/nio/ByteBuffer.class.o \
-	java/nio/ByteOrder.class.o \
-	model/FacePTN.class.o \
-	model/ModelObject.class.o \
-	model/UntitledModel.class.o \
-	model/Vec2.class.o \
-	model/Vec3.class.o \
-	sega/dreamcast/g2_if/G2IF.class.o \
 	sega/dreamcast/gdrom/G1IF.class.o \
 	sega/dreamcast/gdrom/GdromBits.class.o \
 	sega/dreamcast/gdrom/Gdrom.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_open.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_play.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_read2.class.o \
 	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_read.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_scan.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_scd.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_seek.class.o \
 	sega/dreamcast/gdrom/GdromCommandPacketFormat.class.o \
 	sega/dreamcast/gdrom/GdromCommandPacketFormat_get_toc.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_req_error.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_req_mode.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_req_ses.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_req_stat.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_set_mode.class.o \
-	sega/dreamcast/gdrom/GdromCommandPacketFormat_test_unit.class.o \
 	sega/dreamcast/gdrom/GdromCommandPacketInterface.class.o \
-	sega/dreamcast/gdrom/GdromProtocol.class.o \
-	sega/dreamcast/holly/Background.class.o \
-	sega/dreamcast/holly/CoreBits.class.o \
-	sega/dreamcast/holly/Core.class.o \
-	sega/dreamcast/holly/Holly.class.o \
-	sega/dreamcast/holly/ISPTSP.class.o \
-	sega/dreamcast/holly/RegionArray.class.o \
-	sega/dreamcast/holly/RegionArray_OPBSize.class.o \
-	sega/dreamcast/holly/TABits.class.o \
-	sega/dreamcast/holly/TAFIFOPolygonConverter.class.o \
-	sega/dreamcast/holly/TAGlobalParameter.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_end_of_list.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_modifier_volume.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_object_list_set.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_polygon_type_0.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_polygon_type_1.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_polygon_type_2.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_polygon_type_3.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_polygon_type_4.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_sprite.class.o \
-	sega/dreamcast/holly/TAGlobalParameter_user_tile_clip.class.o \
-	sega/dreamcast/holly/TAParameter.class.o \
-	sega/dreamcast/holly/TAVertexParameter.class.o \
-	sega/dreamcast/holly/TAVertexParameter_modifier_volume.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_0.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_10.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_11.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_12.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_13.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_14.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_1.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_2.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_3.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_4.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_5.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_6.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_7.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_8.class.o \
-	sega/dreamcast/holly/TAVertexParameter_polygon_type_9.class.o \
-	sega/dreamcast/holly/TAVertexParameter_sprite_type_0.class.o \
-	sega/dreamcast/holly/TAVertexParameter_sprite_type_1.class.o \
-	sega/dreamcast/holly/TextureMemoryAllocation.class.o \
-	sega/dreamcast/maple/MapleIF.class.o \
-	sega/dreamcast/MemoryMap.class.o \
-	sega/dreamcast/pvr_if/PVRIF.class.o \
-	sega/dreamcast/systembus/SystembusBits.class.o \
-	sega/dreamcast/systembus/Systembus.class.o
+	sega/dreamcast/gdrom/GdromProtocol.class.o
diff --git a/generate_classpath.sh b/generate_classpath.sh
index 6972818..bd8309f 100644
--- a/generate_classpath.sh
+++ b/generate_classpath.sh
@@ -1,3 +1,7 @@
+#!/bin/bash
+
+set -eu pipefail
+
 function java_to_class () {
     while read line; do
         echo "${line%.java}.class"
@@ -66,7 +70,55 @@ function classpath_h () {
     done
 }
 
-set -e
+declare -a boot_classes=(
+    example/GdromExtentReader.class
+    example/GdromTest.class
+    filesystem/iso9660/ByteParser.class
+    filesystem/iso9660/DirectoryRecord.class
+    filesystem/iso9660/ExtentReader.class
+    filesystem/iso9660/PrimaryVolumeDescriptor.class
+    filesystem/iso9660/VolumeParser.class
+    java/io/PrintStream.class
+    java/lang/Boolean.class
+    java/lang/Byte.class
+    java/lang/Character.class
+    java/lang/DecimalDigits.class
+    java/lang/Integer.class
+    java/lang/Object.class
+    java/lang/Short.class
+    java/lang/String.class
+    java/lang/System.class
+    java/misc/Memory.class
+    sega/dreamcast/gdrom/G1IF.class
+    sega/dreamcast/gdrom/GdromBits.class
+    sega/dreamcast/gdrom/Gdrom.class
+    sega/dreamcast/gdrom/GdromCommandPacketFormat_cd_read.class
+    sega/dreamcast/gdrom/GdromCommandPacketFormat.class
+    sega/dreamcast/gdrom/GdromCommandPacketFormat_get_toc.class
+    sega/dreamcast/gdrom/GdromCommandPacketInterface.class
+    sega/dreamcast/gdrom/GdromProtocol.class
+)
+
+function boot_classes () {
+    local length=${#boot_classes[@]}
+
+    for ((i=0;i<length;i++)); do
+        local class="${boot_classes[i]}"
+        echo "$class"
+    done
+}
+
+function boot_sources () {
+    local length=${#boot_classes[@]}
+
+    for ((i=0;i<length;i++)); do
+        local class="${boot_classes[i]}"
+        local source="${class%.class}.java"
+        if [ -f "$source" ]; then
+           echo "$source"
+        fi
+    done
+}
 
 function find_classes () {
     find model/ example/ sega/ java/ filesystem/ -name '*.class' -not -name 'Test*' | sort
@@ -76,12 +128,18 @@ function find_sources () {
     find model/ example/ sega/ java/ filesystem/ -name '*.java' -not -name 'Test*' | sort
 }
 
+
 find sega/ java/ filesystem/ -name '*.class' -exec rm -f {} \;
+make -j$(nproc) -f Makefile.dreamcast.mk $(boot_sources | java_to_class)
+boot_classes | rename_class_files
+boot_classes | classpath_mk
+boot_classes | classpath_inc_c
+boot_classes | make_header
+boot_classes | classpath_h
 
-make -j$(nproc) -f Makefile.dreamcast.mk $(find_sources | java_to_class)
-
-find_classes | rename_class_files
-find_classes | classpath_mk
-find_classes | classpath_inc_c
-find_classes | make_header
-find_classes | classpath_h
+#make -j$(nproc) -f Makefile.dreamcast.mk $(find_sources | java_to_class)
+#find_classes | rename_class_files
+#find_classes | classpath_mk
+#find_classes | classpath_inc_c
+#find_classes | make_header
+#find_classes | classpath_h
diff --git a/java.mk b/java.mk
index 509b404..1b42f7c 100644
--- a/java.mk
+++ b/java.mk
@@ -25,8 +25,6 @@ OBJ = \
 MAIN_DREAMCAST_OBJ = \
 	c/main_dreamcast.o \
 	c/sh7091_scif.o \
-	images/java_text.data.o \
-	images/java_cup.data.o \
 	images/java_powered.data.o
 
 MAIN_HOSTED_OBJ = \
diff --git a/java/lang/Double.class.h b/java/lang/Double.class.h
index 365c582..ac18d1a 100644
--- a/java/lang/Double.class.h
+++ b/java/lang/Double.class.h
@@ -3,7 +3,7 @@
 #include <stdint.h>
 
 #ifdef __cplusplus
-extern C {
+extern "C" {
 #endif
 
 extern uint32_t _binary_java_lang_Double_class_start __asm("_binary_java_lang_Double_class_start");
diff --git a/java/lang/Float.class.h b/java/lang/Float.class.h
index 0a9c121..ba10b43 100644
--- a/java/lang/Float.class.h
+++ b/java/lang/Float.class.h
@@ -3,7 +3,7 @@
 #include <stdint.h>
 
 #ifdef __cplusplus
-extern C {
+extern "C" {
 #endif
 
 extern uint32_t _binary_java_lang_Float_class_start __asm("_binary_java_lang_Float_class_start");
diff --git a/java/lang/Long.class.h b/java/lang/Long.class.h
index dcfc6d2..21346b5 100644
--- a/java/lang/Long.class.h
+++ b/java/lang/Long.class.h
@@ -3,7 +3,7 @@
 #include <stdint.h>
 
 #ifdef __cplusplus
-extern C {
+extern "C" {
 #endif
 
 extern uint32_t _binary_java_lang_Long_class_start __asm("_binary_java_lang_Long_class_start");
diff --git a/jvm-build.sh b/jvm-build.sh
new file mode 100644
index 0000000..1216112
--- /dev/null
+++ b/jvm-build.sh
@@ -0,0 +1,11 @@
+set -eux
+
+#(cd ../jvm; sh generate_classpath.sh)
+#(cd ../jvm; make -f Makefile.dreamcast.mk main.bin)
+#cp ../jvm/main.bin jvm.bin
+#make gdrom-jvm-boot-ip-bin
+#make ip.iso
+
+rm -f main.bin main.elf jvm.iso
+make -f Makefile.dreamcast.mk jvm.iso
+../cdi4dc jvm.iso jvm.cdi > /dev/null