diff --git a/build/unixv0.simh b/build/unixv0.simh
index 4cc7d68..bde540d 100644
--- a/build/unixv0.simh
+++ b/build/unixv0.simh
@@ -3,11 +3,29 @@ set cpu eae
 set cpu history=100
 show cpu
 
+# set up SIMH devices:
+
+# UNIX character translations (CR to NL, ESC to ALTMODE):
 set tti unix
+
+# RB09 fixed head disk:
 set rb ena
 att rb image.fs
+
+# uncomment to TELNET in GRAPHICS-2 keyboard/display(!!)
+# (requires github.com/philbudne/simh)
+#set g2in ena
+#att -U g2in 12345
+
+# disable hardware UNIX-7 doesn't know about:
+set lpt disa
+set drm disa
+set dt disa
+
+# show device settings:
 show dev
 
+# load and start the system:
 load -S a.rim
 dep pc 0100
-cont
+go