diff --git a/Binary/Makefile b/Binary/Makefile
index 8e01338f..4b2e6294 100644
--- a/Binary/Makefile
+++ b/Binary/Makefile
@@ -5,4 +5,4 @@ SUBDIRS = Apps CPM3 ZPM3
 include $(TOOLS)/Makefile.inc
 
 clobber::
-	@rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom
+	@rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom *.dat
diff --git a/Source/BuildZRC.cmd b/Source/BuildZRC.cmd
new file mode 100644
index 00000000..4c037580
--- /dev/null
+++ b/Source/BuildZRC.cmd
@@ -0,0 +1,4 @@
+@echo off
+setlocal
+
+setlocal & cd ZRC && call Build || exit /b 1 & endlocal
diff --git a/Source/Images/Build.cmd b/Source/Images/Build.cmd
index 8a443fe7..78efeccd 100644
--- a/Source/Images/Build.cmd
+++ b/Source/Images/Build.cmd
@@ -40,7 +40,6 @@ call BuildDisk.cmd ws4 wbw_hd1024
 if exist ..\BPBIOS\bpbio-ww.rel call BuildDisk.cmd bp wbw_hd1024
 
 copy hd1024_prefix.dat ..\..\Binary\
-copy hd1024_zrc_prefix.dat ..\..\Binary\
 
 echo.
 echo Building Combo Disk (1024 directory entry format) Image...
diff --git a/Source/Images/Makefile b/Source/Images/Makefile
index 23962b06..7df9706f 100644
--- a/Source/Images/Makefile
+++ b/Source/Images/Makefile
@@ -14,12 +14,10 @@ HD1024IMGS = hd1024_cpm22.img hd1024_zsdos.img hd1024_nzcom.img \
 
 HD512PREFIX =
 HD1024PREFIX = hd1024_prefix.dat
-HD1024ZRCPREFIX = hd1024_zrc_prefix.dat
 
 OBJECTS = $(FDIMGS)
 OBJECTS += $(HD512IMGS) hd512_combo.img $(HD512PREFIX)
 OBJECTS += $(HD1024IMGS) hd1024_combo.img $(HD1024PREFIX)
-OBJECTS += $(HD1024ZRCPREFIX)
 
 OTHERS = blank144 blankhd512 blankhd1024
 
diff --git a/Source/Images/hd1024_zrc_prefix.dat b/Source/Images/hd1024_zrc_prefix.dat
deleted file mode 100644
index 36044f58..00000000
Binary files a/Source/Images/hd1024_zrc_prefix.dat and /dev/null differ
diff --git a/Source/Makefile b/Source/Makefile
index 3df2bab5..1184c624 100644
--- a/Source/Makefile
+++ b/Source/Makefile
@@ -11,5 +11,6 @@ SUBDIRS += HBIOS CPM3
 SUBDIRS += ZPM3
 #SUBDIRS += BPBIOS
 SUBDIRS += Images
+SUBDIRS += ZRC
 TOOLS = ../Tools
 include $(TOOLS)/Makefile.inc
diff --git a/Source/ZRC/Build.cmd b/Source/ZRC/Build.cmd
new file mode 100644
index 00000000..e4be1f07
--- /dev/null
+++ b/Source/ZRC/Build.cmd
@@ -0,0 +1,13 @@
+@echo off
+setlocal
+
+if not exist ..\..\Binary\RCZ80_zrc.rom goto :err
+
+copy /b zrc_cfldr.bin + zrc_ptbl.bin + zrc_fill_1.bin + zrc_mon.bin + zrc_fill_2.bin + ..\..\Binary\RCZ80_zrc.rom + zrc_fill_3.bin ..\..\Binary\hd1024_zrc_prefix.dat
+
+goto :eof
+
+:err
+
+echo *** Can't build ZRC prefix file -- missing "..\..\Binary\RCZ80_zrc.rom"
+exit /b 1
\ No newline at end of file
diff --git a/Source/ZRC/Clean.cmd b/Source/ZRC/Clean.cmd
new file mode 100644
index 00000000..fa12c5c7
--- /dev/null
+++ b/Source/ZRC/Clean.cmd
@@ -0,0 +1,3 @@
+@echo off
+setlocal
+
diff --git a/Source/ZRC/Makefile b/Source/ZRC/Makefile
new file mode 100644
index 00000000..aed2c80b
--- /dev/null
+++ b/Source/ZRC/Makefile
@@ -0,0 +1,19 @@
+HD1024ZRCPREFIX = hd1024_zrc_prefix.dat
+ZRCROM = ../../Binary/RCZ80_zrc.rom
+
+OBJECTS :=
+
+ifneq ($(wildcard $(ZRCROM)),)
+	OBJECTS += $(HD1024ZRCPREFIX)
+endif
+
+DEST=../../Binary
+
+TOOLS = ../../Tools
+
+include $(TOOLS)/Makefile.inc
+
+DIFFPATH = $(DIFFTO)/Binary
+
+$(HD1024ZRCPREFIX):
+	cat zrc_cfldr.bin zrc_ptbl.bin zrc_fill_1.bin zrc_mon.bin zrc_fill_2.bin $(ZRCROM) zrc_fill_3.bin >$@
\ No newline at end of file
diff --git a/Source/ZRC/ZRC Disk Layout.txt b/Source/ZRC/ZRC Disk Layout.txt
new file mode 100644
index 00000000..7f8e3975
--- /dev/null
+++ b/Source/ZRC/ZRC Disk Layout.txt	
@@ -0,0 +1,16 @@
+CF Boot Loader: Sector 0 (bytes 0-255)
+RomWBW Partition Table: Sector 0 (bytes 256-511)
+ZRC Monitor: Sectors 0xF8-0xFF (bytes 0x1F000-0x1FFFF)
+RomWBW: Sectors 0x120-0x51F (bytes 0x24000-0xA3FFF)
+Start of Slices (0x1E partition): Sector 0x800 (byte 0x100000)
+
+Start	Length	Description
+-------	-------	---------------------------
+0x00000 0x00100	CF Boot Loader
+0x00100 0x00100	RomWBW Partition Table
+0x00200 0x1EE00	Filler
+0x1F000 0x01000	ZRC Monitor
+0x20000 0x04000	Filler
+0x24000 0x80000	RomWBW
+0xA4000 0x5C000	Filler
+0x100000: Start of slices (partition 0x1E)
\ No newline at end of file