REP 21/170 ;C101 UINITC: TLZ F,-1 ;CLEAR BITS FROM OTHER CHANNELS/DDBS WIT UINITC: TLZ F,^-SYSDEV ;CLEAR BITS FROM OTHER CHANNELS/DDBS INS 62/170 ;C102 PUSHJ P,TTYKLQ## ;KILL OFF TTY DDB IF NECESSARY REP 35/257 ;C103 PJRST TTYKLQ## ;ILL DATA MODE, DISCARD DDB IF FREE TTY WIT POPJ P, ;ILLEGAL DATA MODE SUM 83004