--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/alib/is_cntrl.a	Tue Mar 30 02:44:42 2010 +0000
@@ -0,0 +1,32 @@
+*****************************************
+
+* See if character in "B" is a control character
+* controls are defined as $00..$1F and $7F+
+
+* OTHER MODULES NEEDED: none
+
+* ENTRY: B=character to test
+
+* EXIT: CC zero=1 if control, 0 if not
+
+ nam Is Char a Control?
+ ttl Assembler Library Module
+
+
+ psect IS_CNTRL,0,0,0,0,0
+
+
+IS_CNTRL:
+ cmpb #$7f
+ bhs yes
+ cmpb #$1f
+ bhi exit not control, zero cleared
+
+yes
+ orcc #%00000100 set zero
+
+exit
+ rts
+
+ endsect
+