SEARCH HDRFIL
COMPIL(TTY,<INCHRW,INCHRS,INCHWL,INCHSL,INSTR,OUTCHR,OUTSTR,TTYUP
ENTINT	<INSTRL,INSTRS,CLRBUF,TTYIN,TTYINS,TTYINL>>
  ,<SAVE,RESTR,X11,X22,X33,INSET,CAT,STRNGC,GOGTAB,BRKMSK,BKTCHK,.SKIP.,.SONTP>
	  ,<TELETYPE FUNCTIONS>)
EXPO <
IFE ALWAYS,<
EXTERN OTSTRBF
NOTENX<
ENTRY BACKUP
>;NOTENX
>;IFE ALWAYS
>;EXPO
DEFINE KONVERT(AC) <
	SKIPN	TTYCVT(USER)
	JRST	.+5
	CAIL	AC,"a"
	CAILE	AC,"z"
	JRST	.+2
	TRZ	AC,40	;FORCE TO BE LOWER CASE
>
HERE (INCHRW)	TTCALL	A
	MOVE	USER,GOGTAB
	KONVERT	(A)
	POPJ	P,
HERE (INCHRS)	TTCALL	2,A		;SKIP IF CHAR WAITING
	MOVNI	A,1		;ELSE RETURN -1
	MOVE	USER,GOGTAB
	KONVERT(A)
	POPJ	P,
HERE (OUTCHR)	TTYUUO	1,-1(P)		;OUTPUT THE PARAMETER
	SUB	P,X22		;REMOVE PARAMETER
	JRST	@2(P)
HERE (OUTSTR)
EXPO <
	MOVE 	USER,GOGTAB
	EXCH	A,-1(SP)		;LENGTH OF STRING
	HRRZS	A			; REALLY
	EXCH	B,(SP)			;PTR TO THE STRING
	PUSH	P,C			;NEED ANOTHER AC
	JUMPLE	A,OU.OUT		;DON'T DO ANYTHING
OSLOOP:	MOVE	C,A
	SUBI	A,14*5-1		;# CHARS/CHOMP
	SKIPLE	A			;LOTS LEFT??
	MOVEI	C,14*5-1		; YES,
	MOVE	LPSA,[POINT 7,OTSTRBF];AS GOOD A PLACE AS ANY
	ILDB	TEMP,B
	SKIPE	TEMP			;NULL??
	IDPB	TEMP,LPSA		; NO
	SOJG	C,.-3
	MOVEI	TEMP,0			;A NULL FOR THE END
	IDPB	TEMP,LPSA
	TTCALL	3,OTSTRBF		;RAISON D'ETRE
	JUMPG	A,OSLOOP
OU.OUT:	POP	SP,B
	POP	SP,A
	POP	P,C
	POPJ	P,
>;EXPO
NOEXPO <
	HLRZ	TEMP,(SP)		;SIZE/POSITION FIELDS OF BP
	TRZ	TEMP,7777		;CLEAR SIZE FIELD
	OR	TEMP,-1(SP)		;POSITION, COUNT IN RH FOR DDTOUT
	TRNN	TEMP,7777		;IF NULL STRING, QUIT
	 JRST	 QUIT
	HRLM	TEMP,(SP)
	MOVE	TEMP,[SIXBIT /TTY/]	;DEVICE FOR TTYMES
	MOVEM	TEMP,-1(SP)
	MOVEI	TEMP,-1(SP)		;POINT AT SPEC
	CALLI	TEMP,400047		;WRITE FIRST CHAR FOR LENGTH CHARS
	 JFCL				;IT HAS BEEN KNOW TO SKIP-RETURN
QUIT:	SUB	SP,X22			;REMOVE THE ARGUMENT
>;NOEXPO
	POPJ	P,			;DONE
TTWCHR←←=100	;MAX NUMBER OF CHARS ON TTY INPUT
CMU <		;EXCEPT WE HAVE LARGER INPUT BUFFERS
TTWCHR←←=140
>;CMU
REDSTR:	SKIPE	SGLIGN(USER)
	PUSHJ	P,INSET
	MOVEI	A,TTWCHR
	ADDM	A,REMCHR(USER)
	SKIPLE	REMCHR(USER)
	PUSHJ	P,STRNGC
	MOVNI	A,TTWCHR
	PUSH	SP,[0]		;NULL STRING IF NOTHING DONE
	PUSH	SP,TOPBYTE(USER)
	POPJ	P,
FINSTR:	CAIN	TEMP,15	;REMOVE LFD IF CR BROKE IT
	TTCALL	TEMP
FINS1:	ADDM	A,REMCHR(USER)	;NUMBER NOT USED
	ADDI	A,TTWCHR		;NUMBER USED
	HRROS  -1(SP)		; TO STRING COUNT WORD
	ADDM	A,-1(SP)	;UPDATE COUNT WORD
	JRST	RESTR
HERE (INSTR) PUSHJ	P,SAVE
	PUSHJ	P,REDSTR
	MOVE	B,-1(P)		;BREAK CHAR
	MOVE	LPSA,X22	;# TO REMOVE
INS1:	PUUO	0,TEMP		;NEXT CHAR
	KONVERT	(TEMP)		;**** CONVERT BEFORE TEST BREAKEDNESS *****
INS2:	CAMN	TEMP,B		;BREAK?
	 JRST	 FINSTR		; YES, ALL DONE
	IDPB	TEMP,TOPBYTE(USER) ;PUT IT AWAY AND
	AOJL	A,INS1		; IF ROOM, GO BACK FOR MORE
	PUSHJ	P,CHRMOR	;MAKE ROOM, THEN GO BACK
	JRST	INS1		;
HERE (INCHWL)	PUSHJ	P,SAVE
	PUSHJ	P,REDSTR
	MOVE	LPSA,X11
	TTCALL	4,TEMP
INS3:	CAIE	TEMP,12
NOCMU <	;WE WILL JUST BREAK ON CR OR LF, THANK YOU
EXPO <
	CAIN	TEMP,33		;NORMAL ALTMODE.
>;EXPO
NOEXPO <
	CAIN	TEMP,175
>;NOEXPO
	 JRST	 DNSTR
	CAIE	TEMP,15		;CR?
	TRNE	TEMP,600	;CONTROL BITS ON?
>;NOCMU
CMU <	CAIE	TEMP,15		;CR?
	CAIN	TEMP,12		; OR LF?
>;CMU
	 JRST	 DNSTR		;YES
	KONVERT(TEMP)
	IDPB	TEMP,TOPBYTE(USER) ;PUT IT AWAY
	TTCALL	TEMP		;GET ANOTHER AND
	AOJL	A,INS3		;GO HANDLE IT (IF STILL HAVE ROOM)
	PUSHJ	P,CHRMOR	;GET ROOM FOR MORE CHARS
	JRST	INS3		;GO HANDLE
DNSTR:	MOVEM	TEMP,.SKIP.	;SET BREAK CHAR
	JRST	FINSTR
HERE (INCHSL)	PUSHJ	P,SAVE
	MOVE	LPSA,X22	;PARAM (FLAG) AND RETURN
	PUSHJ	P,REDSTR
	SETOM	@-1(P)		;ASSUME FAILED
	TTCALL	5,TEMP		;ARE THERE CHARS?
	JRST	FINSTR		;NO
	SETZM	@-1(P)		;YES, GET THEM
	JRST	INS3		;USE INCHWL'S LOOP, NOT INSTR'S
HERE (INSTRL)	PUSHJ	P,SAVE
	MOVE	LPSA,X22
	PUSHJ	P,REDSTR
	TTCALL	4,TEMP
	MOVE	B,-1(P)
	JRST	INS2
HERE (INSTRS)	PUSHJ	P,SAVE
	MOVE	LPSA,X33
	PUSHJ	P,REDSTR
	SETOM	@-2(P)
	TTCALL	5,TEMP
	JRST	FINSTR
	SETZM	@-2(P)
	MOVE	B,-1(P)
	JRST	INS2
HERE (CLRBUF)	TTCALL	11,
	POPJ	P,
HERE (TTYINS) PUSHJ	P,SAVE
	PUSHJ	P,REDSTR	;PREPARE TO MAKE A STRING
	MOVE	LPSA,X33
	SETOM	@-1(P)		;ASSUME NO CHARS
	TTCALL	5,D		;SEE IF LINES WAITING
	 JRST	FINS1		;NONE WAINTING
	MOVE	B,[TTCALL D]
	JRST	TYIN1		;GO AHEAD
HERE (TTYINL)
	PUSHJ	P,SAVE
	TTCALL	4,D		;WAIT FOR A LINE
	MOVE	B,[ TTCALL 4,D]
	JRST	TYIN
HERE (TTYIN)	PUSHJ	P,SAVE
	TTCALL	D		;GET A CHAR
	MOVE	B,[TTCALL D]	;FOR LOOP
TYIN:	PUSHJ	P,REDSTR	;PREPARE STACK,A,STRNGC FOR A STRING
	MOVE	LPSA,X33	;PREPARE TO RETURN
TYIN1:	SETZM	@-1(P)		;ASSUME NO BREAK CHAR
	MOVE	X,-2(P)		;TABLE #
	MOVEI	TEMP,-1		;BLOCK MUST BE THERE AND TABLE MUST BE INIT'ED
	PUSHJ	P,BKTCHK	;CHECK TABLE #
	 JRST	FINS1		;ERROR OF SOME SORT
	MOVE	FF,BRKMSK(CHNL)	;GET MASK FOR THIS TABLE
	ADD	CHNL,CDB	;RELOCATE RANGE 1 TO 18
	MOVEI	Z,1		;FOR TESTING LINE NUMBERS
	SKIPN	LINTBL(CHNL)	;DON'T LET TEST SUCCEED IF
	 MOVEI	 Z,0		;WE'RE TO LET LINE NUMBERS THRU
	TRNE	FF,@BRKCVT(CDB)	 ;SPECIFY UC COERCION
	TLOA	C,400000	;YES
	TLZ	C,400000	;NO
	MOVE	Y,CDB
	ADD	Y,[XWD D,BRKTBL] ;BRKTBL+RLC(CDB)
	JRST	TTYN1
TTYN:	XCT	B		;1 CHAR
TTYN1:
	JUMPGE	C,TT.NUC	;COERCE BECAUSE OF BRK TBL ?
	CAIL	D,"a"		;ONLY IF LC
	CAILE	D,"z"
	JRST	TT.TSB		;GO TEST BREAK
	TRZ	D,40		;MAKE UC
	JRST	TT.TSB
TT.NUC:	KONVERT(D)		;MAY TURN TO UC BECAUSE OF TTY
TT.TSB:
	TDNE	FF,@Y		;BREAK OR OMIT?
	JRST	TTYSPC		; YES, FIND OUT WHICH
TTYC:	IDPB	D,TOPBYTE(USER)	;PUT IT AWAY
	AOJL	A,TTYN		;COUNT AND CONTINUE
TTNMOR:	PUSHJ	P,CHRMOR	;ALLOW FOR MORE CHARS
	JRST	TTYN		;GO GO GO
TTYSPC:	HLLZ	TEMP,@Y		;WHICH?
	TDNN	TEMP,FF
	JRST	TTYN		;OMIT
	MOVEM	D,@-1(P)
	SKIPN	Y,DSPTBL(CHNL)	;GET DISPOSITION WORDD FOR THIS TABLE
	JRST	FINS1		;DONE, NO SAVE
	JUMPL	Y,TTYAPP	;APPEND
	ERR	<TTYIN: cannot retain break char>,1,FINS1
TTYAPP:	IDPB	D,TOPBYTE(USER)	;COUNT THE BREAK CHAR
	ADDI	A,1		;ONE MORE HAPPY CHAR
	JRST	FINS1
CHRMOR:	ADDI	A,TTWCHR	;A ← NUMBER CHARS USED
	ADDM	A,-1(SP)	;UPDATE COUNT
	PUSH	P,TEMP		;SOME PEOPLE HAVE A CHARACTER HERE
	PUSH	P,[TTWCHR]	;GET SOME MORE
	PUSHJ	P,.SONTP	;BE SURE ROOM & ALIGNED
	POP	P,TEMP		;WE JUST SAVED THIS
	MOVNI	A,TTWCHR	;REFRESH THE COUNT
	POPJ	P,
HERE(TTYUP)
	MOVE 	USER,GOGTAB
	MOVE	A,-1(P)
	EXCH	A,TTYCVT(USER)
	SUB	P,X22
	JRST	@2(P)		;RETURN
NOTENX<
NOSTANFORD<
HEREFK(BACKUP,BACKU.)
	TTYUUO	10,0
	 JFCL		;THIS CAN SKIP?
	POPJ	P,
>;NOSTANFORD
>;NOTENX
ENDCOM(TTY)
END