diff --git a/Makefile b/Makefile
index fedc7c9..b6b1fab 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ LD=$(RETRO68)/bin/m68k-apple-macos-ld
 OBJCOPY=$(RETRO68)/bin/m68k-apple-macos-objcopy
 OBJDUMP=$(RETRO68)/bin/m68k-apple-macos-objdump
 
-all: bin/rom.bin obj/rdisk.s obj/driver.s obj/entry_rel.sym obj/driver_abs.sym
+all: bin/rom2M.bin bin/rom8M.bin obj/rdisk1M5.s obj/rdisk7M5.s obj/driver1M5.s obj/driver7M5.s obj/entry_rel.sym obj/driver_abs.sym
 
 obj:
 	mkdir obj
@@ -24,31 +24,46 @@ obj/entry_rel.sym: obj obj/entry.o
 	$(OBJDUMP) -t obj/entry.o > $@
 
 
-obj/rdisk.o: rdisk.c obj
-	$(CC) -c -Os $< -o $@
+obj/rdisk1M5.o: rdisk.c obj
+	$(CC) -DRDiskSize=1572864 -c -Os $< -o $@
 
-obj/rdisk.s: obj obj/rdisk.o
-	$(OBJDUMP) -d obj/rdisk.o > $@
+obj/rdisk7M5.o: rdisk.c obj
+	$(CC) -DRDiskSize=7864320 -c -Os $< -o $@
+
+obj/rdisk1M5.s: obj obj/rdisk1M5.o
+	$(OBJDUMP) -d obj/rdisk1M5.o > $@
+
+obj/rdisk7M5.s: obj obj/rdisk7M5.o
+	$(OBJDUMP) -d obj/rdisk1M5.o > $@
 
 
-obj/driver.o: obj obj/entry.o obj/rdisk.o
-	$(LD) -Ttext=40851D70 -o $@ obj/entry.o obj/rdisk.o
+obj/driver1M5.o: obj obj/entry.o obj/rdisk1M5.o
+	$(LD) -Ttext=40851D70 -o $@ obj/entry.o obj/rdisk1M5.o
 
-obj/driver.s: obj obj/driver.o
-	$(OBJDUMP) -d obj/driver.o > $@
+obj/driver7M5.o: obj obj/entry.o obj/rdisk7M5.o
+	$(LD) -Ttext=40851D70 -o $@ obj/entry.o obj/rdisk7M5.o
 
-obj/driver_abs.sym: obj obj/driver.o
-	$(OBJDUMP) -t obj/driver.o > $@
+obj/driver1M5.s: obj obj/driver1M5.o
+	$(OBJDUMP) -d obj/driver1M5.o > $@
+
+obj/driver7M5.s: obj obj/driver7M5.o
+	$(OBJDUMP) -d obj/driver7M5.o > $@
+
+obj/driver_abs.sym: obj obj/driver1M5.o
+	$(OBJDUMP) -t obj/driver1M5.o > $@
 
 
-bin/driver.bin: bin obj/driver.o
-	$(OBJCOPY) -O binary obj/driver.o $@
+bin/driver1M5.bin: bin obj/driver1M5.o
+	$(OBJCOPY) -O binary obj/driver1M5.o $@
+
+bin/driver7M5.bin: bin obj/driver7M5.o
+	$(OBJCOPY) -O binary obj/driver7M5.o $@
 
 
-bin/rom.bin: baserom.bin RDisk1M5-6.dsk bin bin/driver.bin obj/driver_abs.sym obj/entry_rel.sym 
+bin/rom2M.bin: baserom.bin RDisk1M5.dsk bin bin/driver1M5.bin obj/driver_abs.sym obj/entry_rel.sym 
 	cp baserom.bin $@ # Copy base rom
 	# Patch driver
-	dd if=bin/driver.bin of=$@ bs=1 seek=335248 skip=32 conv=notrunc # Copy driver code
+	dd if=bin/driver1M5.bin of=$@ bs=1 seek=335248 skip=32 conv=notrunc # Copy driver code
 	printf '\x78' | dd of=$@ bs=1 seek=335168 count=1 conv=notrunc # Set resource flags
 	printf '\x4F' | dd of=$@ bs=1 seek=335216 count=1 conv=notrunc # Set driver flags
 	cat obj/entry_rel.sym | grep "DOpen" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335224 count=2 conv=notrunc
@@ -56,7 +71,21 @@ bin/rom.bin: baserom.bin RDisk1M5-6.dsk bin bin/driver.bin obj/driver_abs.sym ob
 	cat obj/entry_rel.sym | grep "DControl" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335228 count=2 conv=notrunc
 	cat obj/entry_rel.sym | grep "DStatus" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335230 count=2 conv=notrunc
 	cat obj/entry_rel.sym | grep "DClose" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335232 count=2 conv=notrunc
-	dd if=RDisk1M5-6.dsk of=$@ bs=1024 seek=512 count=1536 conv=notrunc # copy disk image
+	dd if=RDisk1M5.dsk of=$@ bs=1024 seek=512 count=1536 conv=notrunc # copy disk image
+
+bin/rom8M.bin: baserom.bin RDisk7M5.dsk bin bin/driver7M5.bin obj/driver_abs.sym obj/entry_rel.sym 
+	cp baserom.bin $@ # Copy base rom
+	# Patch driver
+	dd if=bin/driver7M5.bin of=$@ bs=1 seek=335248 skip=32 conv=notrunc # Copy driver code
+	printf '\x78' | dd of=$@ bs=1 seek=335168 count=1 conv=notrunc # Set resource flags
+	printf '\x4F' | dd of=$@ bs=1 seek=335216 count=1 conv=notrunc # Set driver flags
+	cat obj/entry_rel.sym | grep "DOpen" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335224 count=2 conv=notrunc
+	cat obj/entry_rel.sym | grep "DPrime" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335226 count=2 conv=notrunc
+	cat obj/entry_rel.sym | grep "DControl" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335228 count=2 conv=notrunc
+	cat obj/entry_rel.sym | grep "DStatus" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335230 count=2 conv=notrunc
+	cat obj/entry_rel.sym | grep "DClose" | cut -c5-8 | xxd -r -p - | dd of=$@ bs=1 seek=335232 count=2 conv=notrunc
+	dd if=RDisk7M5.dsk of=$@ bs=1024 seek=512 count=7680 conv=notrunc # copy disk image
+
 
 .PHONY: clean
 clean:
diff --git a/RDisk1M5-7.dsk b/RDisk1M5-7.dsk
deleted file mode 100644
index 95d29fc..0000000
Binary files a/RDisk1M5-7.dsk and /dev/null differ
diff --git a/RDisk1M5-6.dsk b/RDisk1M5.dsk
similarity index 100%
rename from RDisk1M5-6.dsk
rename to RDisk1M5.dsk
diff --git a/RDisk7M5.dsk b/RDisk7M5.dsk
new file mode 100644
index 0000000..90899d3
Binary files /dev/null and b/RDisk7M5.dsk differ
diff --git a/bin/driver.bin b/bin/driver1M5.bin
similarity index 100%
rename from bin/driver.bin
rename to bin/driver1M5.bin
diff --git a/bin/driver7M5.bin b/bin/driver7M5.bin
new file mode 100755
index 0000000..821bb84
Binary files /dev/null and b/bin/driver7M5.bin differ
diff --git a/bin/rom.bin b/bin/rom2M.bin
similarity index 100%
rename from bin/rom.bin
rename to bin/rom2M.bin
diff --git a/bin/rom8M.bin b/bin/rom8M.bin
new file mode 100755
index 0000000..82e1ab4
Binary files /dev/null and b/bin/rom8M.bin differ
diff --git a/rdisk.h b/rdisk.h
index 8340303..689ee88 100644
--- a/rdisk.h
+++ b/rdisk.h
@@ -1,7 +1,7 @@
 #ifndef RDISK_H
 #define RDISK_H
 
-#define RDiskSize (0x00180000L)
+//#define RDiskSize (0x00180000L)
 #define RDiskBuf ((char*)0x40880000)
 #define BufPtr ((Ptr*)0x10C)
 #define MemTop ((Ptr*)0x108)