diff --git a/sys/msdos/schema2 b/sys/msdos/schema2
new file mode 100644
index 000000000..33616f306
--- /dev/null
+++ b/sys/msdos/schema2
@@ -0,0 +1,669 @@
+SCCS Id: @(#)schema2		3.3	 95/10/25
+Copyright (c) NetHack PC Development Team 1993, 1994, 1995
+#
+# NetHack Overlay Schema
+# Small Root footprint, with extended memory available for caching.
+# Almost everything is overlaid.
+#
+
+[ root ]
+pcmain.0   sound.o    tile.o     pctiles.0  pctiles.b
+vidvga.1   vidvga.0   vidvga.b   video.0   video.1   video.b
+hack.3     vidtxt.0   vidtxt.b   alloc.o   ovlinit.o
+
+[ ]
+allmain.0
+
+[ ]
+allmain.1
+
+[ ]
+allmain.b
+
+[ ]
+apply.0    
+
+[ ]
+apply.1    
+
+[ ]
+apply.b    
+
+[ ]
+artifact.0 
+
+[ ]
+artifact.1 
+
+[ ]
+artifact.b 
+
+[ ]
+attrib.0   
+
+[ ]
+attrib.1
+
+[ ]
+attrib.2   
+
+[ ]
+attrib.b   
+
+[ ]
+ball.o     
+
+[ ]
+bones.o    
+
+[ ]
+botl.0     
+
+[ ]
+botl.1     
+
+[ ]
+botl.b     
+
+[ ]
+cmd.0      
+
+[ ]
+cmd.1      
+
+[ ]
+cmd.b      
+
+[ ]
+dbridge.0  
+
+[ ]
+dbridge.1  
+
+[ ]
+dbridge.b  
+
+[ ]
+decl.o     
+
+[ ]
+detect.o
+
+[ ]
+dig.o
+
+[ ]
+display.o
+
+[ ]
+dlb.o
+
+[ ]
+do.0
+
+[ ]
+do.1
+
+[ ]
+do.2
+
+[ ]
+do.3
+
+[ ]
+do.b
+
+[ ]
+do_name.0  
+
+[ ]
+do_name.2  
+
+[ ]
+do_name.b  
+
+[ ]
+do_wear.0  
+
+[ ]
+do_wear.1  
+
+[ ]
+do_wear.2  
+
+[ ]
+do_wear.b  
+
+[ ]
+dog.1      
+
+[ ]
+dog.2
+
+[ ]
+dog.b
+
+[ ]
+dogmove.0
+
+[ ]
+dogmove.b
+
+[ ]
+dokick.o
+
+[ ]
+dothrow.o
+
+[ ]
+drawing.o
+
+[ ]
+dungeon.0
+
+[ ]
+dungeon.1
+
+[ ]
+eat.0      
+
+[ ]
+eat.1      
+
+[ ]
+eat.b      
+
+[ ]
+end.o      
+
+[ ]
+engrave.0  
+
+[ ]
+engrave.1  
+
+[ ]
+engrave.2
+
+[ ]
+engrave.b  
+
+[ ]
+exper.o    
+
+[ ]
+explode.0
+
+[ ]
+explode.1
+
+[ ]
+extralev.o 
+
+[ ]
+files.o    
+
+[ ]
+fountain.o 
+
+[ ]
+getline.1  
+
+[ ]
+getline.2  
+
+[ ]
+hack.1     
+
+[ ]
+hack.2     
+
+[ ]
+hack.b     
+
+[ ]
+hacklib.0
+
+[ ]
+hacklib.1
+
+[ ]
+hacklib.2
+
+[ ]
+hacklib.b
+
+[ ]
+invent.0
+
+[ ]
+invent.1
+
+[ ]
+invent.2
+
+[ ]
+invent.3
+
+[ ]
+invent.b   
+
+[ ]
+light.3
+
+[ ]
+lock.0     
+
+[ ]
+lock.b     mail.0     
+
+[ ]
+mail.b
+
+[ ]
+makemon.0
+
+[ ]
+makemon.1
+
+[ ]
+makemon.2
+
+[ ]
+makemon.b
+
+[ ]
+mcastu.0
+
+[ ]
+mcastu.b
+
+[ ]
+mhitm.0    
+
+[ ]
+mhitm.b    
+
+[ ]
+mhitu.0    
+
+[ ]
+mhitu.1    
+
+[ ]
+mhitu.b    
+
+[ ]
+minion.o   
+
+[ ]
+mklev.o    
+
+[ ]
+mkmap.o    
+
+[ ]
+mkmaze.o   
+
+[ ]
+mkobj.0    
+
+[ ]
+mkobj.1    
+
+[ ]
+mkobj.b    
+
+[ ]
+mkroom.0   
+
+[ ]
+mkroom.b
+
+[ ]
+mon.0
+
+[ ]
+mon.1      
+
+[ ]
+mon.2      
+
+[ ]
+mon.b      
+
+[ ]
+mondata.0  
+
+[ ]
+mondata.1  
+
+[ ]
+mondata.2  
+
+[ ]
+mondata.b  
+
+[ ]
+monmove.0  
+
+[ ]
+monmove.1  
+
+[ ]
+monmove.2  
+
+[ ]
+monmove.b  
+
+[ ]
+monst.o    
+
+[ ]
+monstr.o   
+
+[ ]
+mplayer.o
+
+[ ]
+msdos.0 pckeys.o
+
+[ ]
+msdos.b
+
+[ ]
+mthrowu.0  
+
+[ ]
+mthrowu.1  
+
+[ ]
+mthrowu.b  
+
+[ ]
+muse.o     
+
+[ ]
+music.o    
+
+[ ]
+o_init.o   
+
+[ ]
+objects.o  
+
+[ ]
+objnam.0   
+
+[ ]
+objnam.1   
+
+[ ]
+objnam.b   
+
+[ ]
+options.o  
+
+[ ]
+pager.o    
+
+[ ]
+pcmain.1 role.o
+
+[ ]
+pcmain.b
+
+[ ]
+pcunix.b
+
+[ ]
+pickup.o
+
+[ ]
+pline.b
+
+[ ]
+polyself.0
+
+[ ]
+polyself.1 
+
+[ ]
+polyself.b 
+
+[ ]
+potion.b   
+
+[ ]
+pray.o
+
+[ ]
+priest.0
+
+[ ]
+priest.b
+
+[ ]
+quest.o
+
+[ ]
+questpgr.o
+
+[ ]
+random.o
+
+[ ]
+read.b
+
+[ ]
+rect.o
+
+[ ]
+region.o
+
+[ ]
+restore.o
+
+[ ]
+rip.o
+
+[ ]
+rnd.0      
+
+[ ]
+rnd.1      
+
+[ ]
+rnd.b      
+
+[ ]
+rumors.o
+
+[ ]
+save.o
+
+[ ]
+shk.0
+
+[ ]
+shk.1
+
+[ ]
+shk.2
+
+[ ]
+shk.3
+
+[ ]
+shk.b
+
+[ ]
+shknam.0
+
+[ ]
+shknam.b
+
+[ ]
+sit.o
+
+[ ]
+sounds.0
+
+[ ]
+sounds.b
+
+[ ]
+sp_lev.o
+
+[ ]
+spell.o    
+
+[ ]
+steal.0    
+
+[ ]
+steal.1    
+
+[ ]
+steal.b
+
+[ ]
+steed.o worn.o
+
+[ ]
+sys.o      
+
+[ ]
+teleport.o
+
+[ ]
+termcap.0  
+
+[ ]
+termcap.1  
+
+[ ]
+termcap.b  
+
+[ ]
+timeout.0  
+
+[ ]
+timeout.1  
+
+[ ]
+timeout.b  
+
+[ ]
+topl.1
+
+[ ]
+topl.2
+
+[ ]
+topl.b
+
+[ ]
+topten.o
+
+[ ]
+track.0
+
+[ ]
+track.1
+
+[ ]
+track.b
+
+[ ]
+trap.0
+
+[ ]
+trap.1
+
+[ ]
+trap.2
+
+[ ]
+trap.3
+
+[ ]
+trap.b
+
+[ ]
+tty.o      
+
+[ ]
+u_init.o   
+
+[ ]
+uhitm.o    
+
+[ ]
+vault.0
+
+[ ]
+vault.b    
+
+[ ]
+version.o  
+
+[ ]
+vidvga.2
+
+[ ]
+vis_tab.o  
+
+[ ]
+vision.o   
+
+[ ]
+weapon.0   
+
+[ ]
+weapon.1   
+
+[ ]
+weapon.b   
+
+[ ]
+were.0
+
+[ ]
+were.b     
+
+[ ]
+wield.o    
+
+[ ]
+windows.o  
+
+[ ]
+wintty.o   
+
+[ ]
+wizard.0
+
+[ ]
+wizard.b   
+
+[ ]
+worm.o     
+
+[ ]
+write.o    
+
+[ ]
+zap.0      
+
+[ ]
+zap.1      
+
+[ ]
+zap.2      
+
+[ ]
+zap.3      
+
+[ ]
+zap.b