fix example of vcsa creation

diff --git a/examples/bootfloppy/mkdevs.sh b/examples/bootfloppy/mkdevs.sh
index 03a1a85..8e9512f 100755
--- a/examples/bootfloppy/mkdevs.sh
+++ b/examples/bootfloppy/mkdevs.sh
@@ -57,6 +57,6 @@
 
 # virtual console screen w/ attributes devs
 for i in `seq 0 9`; do
-	mknod vcsa$i b 7 $i
+	mknod vcsa$i b 7 $((128 + i))
 done
 ln -s vcsa0 vcsa