diff --git a/build/pdp10-ka/run b/build/pdp10-ka/run
index 1dd0f6fa..10c2cfe4 100644
--- a/build/pdp10-ka/run
+++ b/build/pdp10-ka/run
@@ -48,4 +48,16 @@ set dpa noheaders
 set wcnsls enabled joystick
 set ocnsls enabled
 set imx enabled mpx=3
+set imx channel=2;unit0;axis0;negate
+set imx channel=3;unit0;axis1
+set imx channel=10;unit0;axis3;negate
+set imx channel=5;unit1;axis0;negate
+set imx channel=6;unit1;axis1
+set imx channel=30;unit1;axis3;negate
+set imx channel=70;unit2;axis0
+set imx channel=71;unit2;axis1;negate
+set imx channel=73;unit2;axis3
+set imx channel=77;unit3;axis0
+set imx channel=76;unit3;axis1;negate
+set imx channel=74;unit3;axis3
 b ptr