Several files need to be modified to make the kernel aware of wstablet:

------------------
sys/dev/DEVNAMES:

wstablet                MI
wstabletdev             MI              Attribute

------------------
sys/conf/files:

define  wstabletdev             {[mux = 0]}

------------------
sys/arch/i386/conf/majors.i386

device-major    wstablet        char 108                wstablet

========================================================================

To actually building the kernel:

copy over any wscons files that have been updated:

	# cd /usr/src/sys/dev/wscons 
	# cp /usr/gsoc/wscons/code/ ./

------------------
config the kernel, then build:

	# cd ../../arch/i386/conf 
	# config WSTABLET 
	# cd ../compile/WSTABLET 
	# make depend 
	# make 2>fix_me

or all at once:

cd /usr/src/sys/arch/i386/conf && config WSTABLET && \
cd ../compile/WSTABLET && make depend && make 2>fix_me

------------------
now copy over the new kernel:

	# cp netbsd /wstablet_rX

reboot and test!

========================================================================

to actually get output.. we need a character device in /dev
thus.. we need to modify the /dev/MAKEDEV script

we'll then need to run:

	cd /dev && ./MAKEDEV wstablet
	

here's the MAKEDEV diff:

Index: MAKEDEV
===================================================================
RCS file: /cvsroot/netbsd-soc/wscons/tests/dev/MAKEDEV,v
retrieving revision 1.1
diff -u -p -r1.1 MAKEDEV
--- MAKEDEV	15 Aug 2008 00:17:38 -0000	1.1
+++ MAKEDEV	15 Aug 2008 00:22:38 -0000
@@ -667,9 +667,10 @@ ugen*)
 wscons)
 	makedev ttyE0 ttyE1 ttyE2 ttyE3 ttyE4 ttyE5 ttyE6 ttyE7
 	makedev wsmouse0 wsmouse1 wsmouse2 wsmouse3
+	makedev wstablet0 wstablet1 wstablet2 wstablet3
 	makedev wskbd0 wskbd1 wskbd2 wskbd3
 	makedev wsmux0 wsmux1 wsmux2 wsmux3
-	makedev wsmouse wskbd
+	makedev wsmouse wstablet wskbd
 	makedev ttyEcfg ttyEstat
 	makedev wsfont
 	;;
@@ -678,6 +679,10 @@ wsmouse)
 	mkdev wsmouse c 65 0
 	;;
 
+wstablet)
+	mkdev wstablet c 65 0
+	;;
+
 wskbd)
 	mkdev wskbd c 65 1
 	;;
@@ -718,6 +723,10 @@ wsmouse*)
 	mkdev wsmouse$unit c 49 $unit
 	;;
 
+wstablet*)
+	unit=${i#wstablet}
+	mkdev wstablet$unit c 108 $unit
+	;;
 wskbd*)
 	unit=${i#wskbd}
 	mkdev wskbd$unit c 48 $unit

========================================================================

if wstablet was compiled with WST_DEBUG enabled, values for x/y/etc
(sent to wstablet_input) will be printed to the console.

to see any of this, we need a read() on the device:

 tail -f /dev/wstablet

will work well.


Happy hacking!