diff --git a/build/pdp10-ka/boot b/build/pdp10-ka/boot
index fdcdc7f4..8d6b48d8 100644
--- a/build/pdp10-ka/boot
+++ b/build/pdp10-ka/boot
@@ -8,7 +8,7 @@ set fha dis
 set dpb dis
 set lpt dis
 set cr dis
-set dc dis
+set dc disable
 set dtc dis
 set dk dis
 at ptr bin/ka10/boot/dskdmp.rim
diff --git a/build/pdp10-ka/boot2 b/build/pdp10-ka/boot2
index ee548775..f0e78777 100644
--- a/build/pdp10-ka/boot2
+++ b/build/pdp10-ka/boot2
@@ -2,7 +2,6 @@ set console wru=034
 set cpu its
 set cpu 1024k
 set cpu mpx
-set cpu ten11
 set rpa dis
 set rpb dis
 set tua dis
@@ -10,7 +9,7 @@ set fha dis
 set dpb dis
 set lpt dis
 set cr dis
-set dc dis
+set dc disable
 set dtc dis
 set dk dis
 set pd ena
diff --git a/build/pdp10-ka/init b/build/pdp10-ka/init
index e9bf9476..cd70da92 100644
--- a/build/pdp10-ka/init
+++ b/build/pdp10-ka/init
@@ -8,7 +8,7 @@ set fha dis
 set dpb dis
 set lpt dis
 set cr dis
-set dc dis
+set dc disable
 set dtc dis
 set dk dis
 at mta0 out/pdp10-ka/magdmp.tap
diff --git a/build/pdp10-ka/run b/build/pdp10-ka/run
index 851efa8e..e4a5a645 100644
--- a/build/pdp10-ka/run
+++ b/build/pdp10-ka/run
@@ -10,7 +10,7 @@ set fha dis
 set dpb dis
 set lpt dis
 set cr dis
-set dc dis
+set dc disable
 set dtc dis
 set dk dis
 set pd enabled