1 TITLE OPEN - CHANNEL OPENER FOR MUDDLE
17 ;THIS PROGRAM HAS ENTRIES: FOPEN, FCLOSE, RENAME, READB, PRINTB, FILECOPY, READSTRING,
18 ; PRINTSTRING, NETSTATE, NETACC, NETS, ACCESS, AND FILE-EXISTS?
20 ;THESE SUBROUTINES HANDLE I/O STREAMS FOR THE MUDDLE SYSTEM.
22 ; FOPEN - OPENS A FILE FOR EITHER READING OR WRITING. IT TAKES
23 ; FIVE OPTINAL ARGUMENTS AS FOLLOWS:
25 ; FOPEN (<DIR>,<FILE NAME1>,<FILE NAME2>,<DEVICE>,<SYSTEM NAME>)
27 ; <DIR> - DIRECTION EITHER READ (INPUT) OR PRINT (OUPUT). DEFAULT IS READ
29 ; <FILE NAME1> - FIRST FILE NAME. DEFAULT INPUT OR OUTPUT.
31 ; <FILE NAME2> - SECOND FILE NAME. DEFAULT MUDDLE.
33 ; <DEVICE> - DEVICE FROM WHICH TO OPEN. DEFAULT IS DSK.
35 ; <SNAME> - SYSTEM (DIRECTORY) NAME. DEFAULT UNAME.
37 ; FOPEN RETURNS AN OBJECT OF TYPE CHANNEL IF IT SUCCEEDS OTHERWISE NIL
40 ; FCLOSE - CLOSES A FILE. TAKES A CHANNEL OBJECT AS ITS ARGUMENT. IT ALSO TAKES
41 ; ACCESS - DOES A .ACCESS ON A CHARACTER BASIS FOR CHARACTER FILES
44 ; A CHANNEL OBJECT IS A VECTOR CONTAINIG THE FOLLOWING INFORMATION
46 ; CHANNO ;ITS I/O CHANNEL NUMBER. 0 MEANS NOT A REAL CHANNEL.
47 ; DIRECT ;DIRECTION (EITHER READ OR PRINT)
48 ; NAME1 ;FIRST NAME OF FILE AS OPENED.
49 ; NAME2 ;SECOND NAME OF FILE
50 ; DEVICE ;DEVICE UPON WHICH THE CHANNEL IS OPEN
51 ; SNAME ;DIRECTORY NAME
52 ; RNAME1 ;REAL FIRST NAME (AS RETURNED BY READING CHANNEL STATUS)
53 ; RNAME2 ;REAL SECOND NAME
55 ; RSNAME ;SYSTEM OR DIRECTORY NAME
56 ; STATUS ;VARIOUS STATUS BITS
57 ; IOINS ;INSTRUCTION EXECUTED TO INPUT OR OUTPUT ONE CHARACTER
58 ; ACCESS ;ACCESS POINTER FOR RAND ACCESS (OR USED FOR DISPLAY INFO)
59 ; RADX ;RADIX FOR CHANNELS NUMBER CONVERSION
61 ; *** THE FOLLOWING FIELDS FOR OUTPUT ONLY ***
62 ; LINLN ;LENGTH OF A LINE IN CHARACTERS FOR THIS DEVICE
63 ; CHRPOS ;CURRENT POSITION ON CURRENT LINE
64 ; PAGLN ;LENGTH OF A PAGE
65 ; LINPOS ;CURRENT LINE BEING WRITTEN ON
67 ; *** THE FOLLOWING FILEDS FOR INPUT ONLY ***
68 ; EOFCND ;GETS EVALUATED ON EOF
69 ; LSTCH ;BACKUP CHARACTER
70 ; WAITNS ;FOR TTY INPUT, BECOMES A .SLEEP WHEN WAITING
71 ; EXBUFR ;FOR TTY INPUT, CONTAINS A WAITING BUFFER LIST
72 ; BUFSTR ;A CHARACTER STRING USED AS BUFFER FOR NON-TTY DEVICES
74 ; THIS DEFINES THE LENGTH OF THE NON-TTY BUFFER
77 ;THIS DEFINES BLOCK MODE BIT FOR OPENING
78 BLOCKM==2 ;DEFINED IN THE LEFT HALF
82 ;THIS IRP DEFINES THE FIELDS AT ASSEMBLY TIME
84 CHANLNT==4 ;INITIAL CHANNEL LENGTH
86 ; BUILD A PROTOTYPE CHANNEL AND DEFINE FILEDS
87 BUFRIN==-1 ;SPECIAL HACK SO LOSERS WON'T SEE TTY BUFFER
88 SCRPTO==-3 ;SPECIAL HACK FOR SCRIPT CHANNELS
91 IRP A,,[[CHANNO,FIX],[DIRECT,CHSTR]
92 [NAME1,CHSTR],[NAME2,CHSTR],[DEVICE,CHSTR],[SNAME,CHSTR]
93 [RNAME1,CHSTR],[RNAME2,CHSTR],[RDEVIC,CHSTR],[RSNAME,CHSTR]
94 [STATUS,FIX],[IOINS,FIX],[LINLN,FIX],[CHRPOS,FIX],[PAGLN,FIX],[LINPOS,FIX]
95 [ACCESS,FIX],[RADX,FIX],[BUFSTR,CHSTR]]
107 ; EQUIVALANCES FOR CHANNELS
113 DISINF==BUFSTR ;DISPLAY INFO
114 INTFCN==BUFSTR ;FUNCTION (OR SUBR, OR RSUBR) TO BE APPLIED FOR INTERNAL CHNLS
117 ;DEFINE VARIABLES ASSOCIATED WITH TTY BUFFERS
119 IRP A,,[IOIN2,ECHO,CHRCNT,ERASCH,KILLCH,BRKCH,ESCAP,SYSCHR,BRFCHR,BRFCH2,BYTPTR]
123 EXTBFR==BYTPTR+1+<100./5> ;LENGTH OF ADD'L BUFFER
128 .GLOBAL IPNAME,MOPEN,MCLOSE,MIOT,ILOOKU,6TOCHS,ICLOS,OCLOS,RGPARS,RGPRS
129 .GLOBAL OPNCHN,CHMAK,READC,TYO,SYSCHR,BRFCHR,LSTCH,BRFCH2,EXTBFR
130 .GLOBAL CHRWRD,STRTO6,TTYBLK,WAITNS,EXBUFR,TTICHN,TTOCHN,GETCHR,IILIST
131 .GLOBAL CHANNO,STATUS,LINPOS,PAGLN,CHRPOS,LINLN,IOINS,ACCESS,ADDNUL
132 .GLOBAL DIRECT,DISINF,RADX,EOFCND,BUFSTR,MODE1,MODE2,GCHACK,GMTYO,INMTYO
133 .GLOBAL T.CHAN,NAME1,BFCLOS,DOIOTI,DOIOTO,DOACCS,NOTTY,DEMFLG,BYTDOP,TNXIN
134 .GLOBAL DISOPN,DISROP,DISCLS,DCHAR,DISLNL,DISPGL,INSTAT,MTYO,CIREST
135 .GLOBAL ECHO,ERASCH,KILLCH,BRKCH,BYTPTR,SYSCHR,CHRCNT,ESCAP,N.CHNS
136 .GLOBAL REOPN,QUITTE,CHNL0,CHNL1,BUFRIN,IOIN2,IFALSE,GFALS,IDVAL,PVSTOR,SPSTOR
137 .GLOBAL BADCHN,WRONGD,CHNCLS,GSNAME,GIBLOK,APLQ,NAPT,ICONS,INCONS,IBLOCK,IDVAL1
138 .GLOBAL GRB,GWB,R1CHAR,W1CHAR,BFCLS1,TTYOP2,MPOPJ,COMPER,R1C,W1C,WXCT,RXCT
139 .GLOBAL TMTNXS,TNXSTR,RDEVIC,CPCH1,RCYCHN,CGFALS,CISTNG,CFILLE,FRSTCH
153 ; DEFINITIONS OF THE OFFSETS INTO THE TP STACK FOR OPEN
155 T.SPDL==0 ; SAVES P STACK BASE
156 T.DIR==2 ; CONTAINS DIRECTION AND MODE
157 T.NM1==4 ; NAME 1 OF FILE
158 T.NM2==6 ; NAME 2 OF FILE
159 T.DEV==10 ; DEVICE NAME
161 T.XT==14 ; EXTRA CRUFT IF NECESSARY
162 T.CHAN==16 ; CHANNEL AS GENERATED
164 ; OFFSETS FROM PSTACK BASE (USED FOR OPENS, .RCHST AND .FDELES)
166 S.DIR==0 ; CODE FOR DIRECTION 0-IN, 1-OUT, 2-BIN, 3-BOUT,4-DISPLAY
167 ; S.DIR(P) = <control word>,,<direction>
169 S.DEV==1 ; SIXBIT DEVICE RIGHT JUSTIFIED
170 S.NM1==2 ; SIXBIT NAME1
171 S.NM2==3 ; SIXBIT NAME2
172 S.SNM==4 ; SIXBIT SNAME
186 ; FLAGS SPECIFYING STATE OF THE WORLD AT VARIOUS TIMES
188 NOSTOR==400000 ; ON MEANS DONT BUILD NEW STRINGS
189 MSTNET==200000 ; ON MEANS ONLY THE "NET" DEVICE CAN WIN
190 SNSET==100000 ; FLAG, SNAME SUPPLIED
191 DVSET==040000 ; FLAG, DEV SUPPLIED
192 N2SET==020000 ; FLAG, NAME2 SET
193 N1SET==010000 ; FLAG, NAME1 SET
194 4ARG==004000 ; FLAG, CONSIDER ARGS TO BE 4 STRINGS
196 RMT [EXPUNGE N1SET,N2SET,DVSET,SNSET,MSTNET,NOSTOR
199 ; TABLE OF LEGAL MODES
201 MODES: IRP A,,[READ,PRINT,READB,PRINTB,PRINTO,PRINAO]
207 ; TABLE OF KNOWN DEVICES AND A POINTER TO THEIR OPENERS
210 DEVSTB: IRP A,,[DSK,TTY,USR,STY,ST,NET,INT,PTP,PTR,UT,T,NUL]
211 SIXBIT /A/ ; DEVICE NAMES
214 DEVS: IRP B,,[ODSK,OTTY,OUSR,OSTY,OSTY,ONET,OINT,OPTP,OPTP,OUTN,OTTY,ONUL]
220 DEVSTB: IRP A,,[PS,SS,SRC,DSK,TTY,INT,NET]
224 DEVS: IRP B,,[ODSK,ODSK,ODSK,ODSK,OTTY,OINT,ONET]
232 ;SUBROUTINE TO DO OPENING BEGINS HERE
234 MFUNCTION NFOPEN,SUBR,[OPEN-NR]
238 MFUNCTION FOPEN,SUBR,[OPEN]
241 PUSHJ P,MAKCHN ;MAKE THE CHANNEL
242 PUSHJ P,OPNCH ;NOW OPEN IT
244 SUB D,[4,,4] ; TOP THE CHANNEL
245 MOVEM D,RCYCHN+1 ; RECYCLE DEAD CHANNEL
252 ; SUBR TO JUST CREATE A CHANNEL
254 IMFUNCTION CHANNEL,SUBR
264 ; THIS ROUTINE PARSES ARGUMENTS TO FOPEN ETC. AND BUILDS A CHANNEL BUT DOESN'T OPEN IT
266 MAKCHN: PUSH TP,$TPDL
267 PUSH TP,P ; POINT AT CURRENT STACK BASE
270 MOVEI E,10 ; SLOTS OF TP NEEDED
274 EXCH E,(P) ; GET RET ADDR IN E
276 IRP ATM,,[DEV,NM1,NM2,SNM]MDF,,[DSK,INPUT,>,[ ]]TMDF,,[DSK,INPUT,MUD,[ ]]
285 IFN ITS, MOVE B,CHQUOTE MDF
286 IFE ITS, MOVE B,CHQUOTE TMDF
292 PUSHJ P,STRTO6 ; RESULT LEFT ON P STACK AS DESIRED
295 PUSH TP,[0] ; PUSH SLOTS
298 PUSH P,[0] ; EXT SLOTS
301 PUSH P,E ; PUSH RETURN ADDRESS
304 JUMPGE AB,MAKCH0 ; NO ARGS, ALREADY DONE
305 GETYP 0,(AB) ; 1ST ARG MUST BE A STRING
308 MOVE A,(AB) ; GET ARG
310 PUSHJ P,CHMODE ; CHECK OUT OPEN MODE
312 PMOVEM (AB),T.DIR(TB) ; SAVE MODE NAME IN TEMPS
313 ADD AB,[2,,2] ; BUMP PAST DIRECTION
315 JUMPGE AB,MAKCH0 ; CHECK NAME1 BASED ON JUST MODE
317 MOVEI 0,0 ; FLAGS PRESET
318 PUSHJ P,RGPARS ; PARSE THE STRING(S)
321 ; ARGUMENTS PARSED, DO FINAL CHECKS AND BUILD CHANNEL
326 MOVE D,S.DEV(C) ; GET DEV
337 IFE ITS, CAIE D,(SIXBIT /INT/);INTERNAL?
338 IFN ITS, CAME D,[SIXBIT /INT /]
339 JRST CHNET ; NO, MAYBE NET
340 SKIPN T.XT+1(TB) ; WAS FCN SUPPLIED?
343 ; FALLS TROUGH IF SKIP
347 ; NOW BUILD THE CHANNEL
349 ARGSOK: MOVEI A,CHANLNT ; GET LENGTH
350 SKIPN B,RCYCHN+1 ; RECYCLE?
351 PUSHJ P,GIBLOK ; GET A BLOCK OF STUFF
353 ADD B,[4,,4] ; HIDE THE TTY BUFFER SLOT
356 HRLI C,PROCHN ; POINT TO PROTOTYPE
357 HRRI C,(B) ; AND NEW ONE
358 BLT C,CHANLN-5(B) ; CLOBBER
359 MOVSI C,TLIST ; TO GIVE HIM A CLEAN LIST OF SCRIPT CHANS
362 ; NOW BLT IN STUFF FROM THE STACK
364 MOVSI C,T.DIR(TB) ; DIRECTION
367 MOVEI C,RNAME1-1(B) ; NOW "REAL" SLOTS
372 ; HERE TO VALIDIFY ARGUMENTS FOR A NET OPEN
376 CAME D,[SIXBIT /NET /] ; IS IT NET
379 CAIE D,(SIXBIT /NET/) ; IS IT NET
381 MOVSI D,TFIX ; FOR TYPES
382 MOVEI B,T.NM1(TB) ; MAKE SURE ALL ARE FIXED
387 LSH A,-1 ; SKIP DEV FLAG
391 MAKCH1: TRNN A,MSTNET ; CANT HAVE SEEN A FIX
396 CHFIX: TRNE A,N1SET ; SKIP IF NOT SPECIFIED
398 SETOM 1(B) ; SET TO -1
400 MOVEM D,(B) ; CORRECT TYPE
406 CHFIX1: ADDI C,1 ; POINT TO NEXT FIELD
407 LSH A,-1 ; AND NEXT FLAG
433 ; SUBROUTINE TO CHECK VALIDITY OF MODE AND SAVE A CODE
435 CHMODE: PUSHJ P,CHMOD ; DO IT
440 CHMOD: PUSHJ P,STRTO6 ; TO SIXBIT
441 POP P,B ; VALUE ENDSUP ON STACK, RESTORE IT
443 MOVSI A,-NMODES ; SCAN TO SEE IF LEGAL MODE
446 JUMPGE A,WRONGD ; ILLEGAL MODE NAME
452 ; RGPARS -- PARSE THE STRINGS COMPRISING FILE NAMES INTO STANDARD ITS GOODIES
454 RGPRS: MOVEI 0,NOSTOR ; DONT STORE STRINGS IF ENTER HERE
456 RGPARS: CAMGE AB,[-7,,] ; MULTI-STRING CASE POSSIBLE?
457 IORI 0,4ARG ; 4 STRING CASE
458 HRLM 0,(P) ; LH IS FLAGS FOR THIS PROG
459 MOVSI E,-4 ; FIELDS TO FILL
461 RPARGL: GETYP 0,(AB) ; GET TYPE
462 CAIE 0,TCHSTR ; STRING?
463 JRST ARGCLB ; NO, JUST CLOBBER IT IN RAW
464 JUMPGE E,CPOPJ ; DON'T DO ANY MORE
465 PUSH TP,(AB) ; GET AN ARG
468 FPARS: PUSH TP,-1(TP) ; ANOTHER COPY
472 PUSHJ P,FLSSP ; NO LEADING SPACES
473 MOVEI A,0 ; WILL HOLD SIXBIT
474 MOVEI B,6 ; CHARS PER 6BIT WORD
475 MOVE C,[440600,,A] ; BYTE POINTER INTO A
477 FPARSL: HRRZ 0,-1(TP) ; GET COUNT
480 ILDB 0,(TP) ; CHAR TO 0
482 CAIE 0,"
\11 ; FILE NAME QUOTE?
487 ILDB 0,(TP) ; USE THIS
495 JRST NDFLD ; YES, TERMINATE THIS FIELD
496 CAIN 0,": ; DEVICE ENDED?
498 CAIN 0,"; ; SNAME ENDED
502 PUSHJ P,A0TO6 ; CONVERT TO 6BIT AND CHECK
504 JUMPE B,FPARSL ; IGNORE IF AREADY HAVE 6
508 ; HERE IF SPACE ENCOUNTERED
510 NDFLD: MOVEI D,(E) ; COPY GOODIE
511 PUSHJ P,FLSSP ; FLUSH REDUNDANT SPACES
512 JUMPE 0,PARSD ; NO CHARS LEFT
514 NFL0: PUSH P,A ; SAVE SIXBIT WORD
515 SKIPGE -1(P) ; SKIP IF STRING TO BE STORED
517 PUSH TP,$TAB ; PREVENT AB LOSSAGE
519 PUSHJ P,6TOCHS ; CONVERT TO STRING
522 NFL1: HRRZ 0,-1(TP) ; RESTORE CHAR COUNT
524 NFL2: MOVEI C,(D) ; COPY REL PNTR
525 SKIPGE -1(P) ; SKIP IF STRINGS TO BE STORED
531 NFL3: MOVSI A,N1SET ; FLAG IT
533 IORM A,-1(P) ; AND CLOBBER
534 MOVE D,T.SPDL+1(TB) ; GET P BASE
535 POP P,@SIXTBL(C) ; AND STORE SIXBIT OF IT
537 POP TP,-2(TP) ; MAKE NEW STRING POINTER
539 JUMPE 0,.+3 ; SKIP IF NO MORE CHARS
540 AOBJN E,FPARS ; MORE TO PARSE?
541 CPOPJ: POPJ P, ; RETURN, ALL DONE
543 SUB TP,[2,,2] ; FLUSH OLD STRING
545 ADD AB,[2,,2] ; BUMP ARG
546 JUMPL AB,RPARGL ; AND GO ON
547 CPOPJ1: AOS A,(P) ; PREPARE TO WIN
553 ; HERE IF STRING HAS ENDED
555 PARSD: PUSH P,A ; SAVE 6 BIT
556 MOVE A,-3(TP) ; CAN USE ARG STRING
559 JRST NFL2 ; AND CONTINUE
561 ; HERE IF JUST READ DEV
563 GOTDEV: MOVEI D,2 ; CODE FOR DEVICE
564 JRST GOTFLD ; GOT A FIELD
566 ; HERE IF JUST READ SNAME
569 GOTFLD: PUSHJ P,FLSSP
573 ; HERE FOR NON STRING ARG ENCOUNTERED
575 ARGCLB: SKIPGE (P) ; IF NOT STORING, CONSIDER THIS THE END
578 MOVE C,T.SPDL+1(TB) ; GET P-BASE
579 MOVE A,S.DEV(C) ; GET DEVICE
580 CAME A,[SIXBIT /INT /]; IS IT THE INTERNAL DEVICE
581 JRST TRYNET ; NO, COUD BE NET
582 MOVE A,0 ; OFFNEDING TYPE TO A
583 PUSHJ P,APLQ ; IS IT APPLICABLE
586 ADD AB,[2,,2] ; MUST BE LAST ARG
588 JRST CPOPJ1 ; ELSE SUCCESSFUL RETURN
589 TRYNET: CAIE 0,TFIX ; FOR NET DEV, ARGS MUST BE FIX
590 JRST WRONGT ; TREAT AS WRONG TYPE
591 MOVSI A,MSTNET ; BETTER BE NET EVENTUALLY
592 IORM A,(P) ; STORE FLAGS
594 MOVE B,1(AB) ; GET NUMBER
595 MOVEI 0,(E) ; MAKE SURE NOT DEVICE
598 PUSH P,B ; SAVE NUMBER
599 MOVEI D,(E) ; SET FOR TABLE OFFSETS
602 JRST NFL2 ; GO CLOBBER IT AWAY
606 ; ROUTINE TO FLUSH LEADING SPACES FROM A FIELD
608 FLSSP: HRRZ 0,-1(TP) ; GET CHR COUNNT
609 JUMPE 0,CPOPJ ; FINISHED STRING
610 FLSS1: MOVE B,(TP) ; GET BYTR
612 CAIE C,^Q ; DONT FLUSH CNTL-Q
615 MOVEM B,(TP) ; UPDATE BYTE POINTER
618 FLSS2: HRRM 0,-1(TP) ; UPDATE STRING
622 ;TABLE FOR STFUFFING SIXBITS AWAY
640 ; TENEX VERSION OF FILE NAME PARSER (ONLY ACCEPT ARGS IN SINGLE STRING)
642 RGPRS: MOVSI 0,NOSTOR
644 RGPARS: IORM 0,(P) ; SAVE FOR STORE CHECKING
645 CAMGE AB,[-2,,] ; MULTI-STRING CASE POSSIBLE?
646 JRST TN.MLT ; YES, GO PROCESS
647 RGPRSS: GETYP 0,(AB) ; CHECK ARG TYPE
649 JRST WRONGT ; FOR NOW ONLY STRING ARGS WIN
652 PUSHJ P,FLSSP ; FLUSH LEADING SPACES
655 CHKLST: JUMPGE AB,CPOPJ1
656 SKIPGE (P) ; IF FROM OPEN, ALLOW ONE MORE
664 RGPRS1: PUSH P,[0] ; ALLOW A DEVICE SPEC
669 CAIE A,"< ; START "DIRECTORY" ?
670 JRST TN.N1 ; NO LOOK FOR NAME1
671 SETOM (P) ; DEV NOT ALLOWED
674 PUSHJ P,TN.CNT ; COUNT CHARS TO ">" OR "."
675 JUMPE B,ILLNAM ; RAN OUT
680 TN.SN1: PUSHJ P,TN.CNT ; COUNT CHARS TO ">"
681 JUMPE B,ILLNAM ; RAN OUT
687 TN.SN2: HRRZ B,-3(TP)
691 TN.SN3: CAIE A,"> ; SKIP IF WINS
693 PUSHJ P,TN.CPS ; COPY TO NEW STRING
697 TN.N1: PUSHJ P,TN.CNT
699 CAIE A,": ; GOT A DEVICE
707 JRST TN.SNM ; NOW LOOK FOR SNAME
712 MOVEM A,(P) ; SAVE END CHAR
713 PUSHJ P,TN.CPS ; GEN STRING
717 TN.N2: SKIPN A,(P) ; GET CHAR BACK
719 CAIN A,"; ; START VERSION?
721 CAIE A,". ; START NAME2?
722 JRST ILLNAM ; I GIVE UP!!!
723 HRRZ B,-1(TP) ; GET RMAINS OF STRING
724 PUSHJ P,TN.CPS ; AND COPY IT
727 RPDONE: SUB P,[1,,1] ; FLUSH TEMP
731 TN.CNT: HRRZ 0,-1(TP) ; CHAR COUNT
733 MOVEI B,0 ; INIT COUNT TO 0
735 TN.CN1: MOVEI A,0 ; IN CASE RUN OUT
736 SOJL 0,CPOPJ ; RUN OUT?
738 CAIE A,"
\16 ; TNEX FILE QUOTE?
741 IBP C ; SKIP QUOTED CHAT
756 TN.CPS: PUSH P,B ; # OF CHARS
757 MOVEI A,4(B) ; ADD 4 TO B IN A
759 PUSHJ P,IBLOCK ; GET BLOCK OF WORDS FOR STRING
761 POP P,C ; CHAR COUNT BACK
765 HRRI A,(C) ; CHAR STRING
766 MOVE D,B ; COPY BYTER
769 ILDB 0,(TP) ; GET CHAR
773 MOVNI C,(A) ; - LENGTH TO C
774 ADDB C,-1(TP) ; DECREMENT WORDS COUNT
775 TRNN C,-1 ; SKIP IF EMPTY
778 SOS -1(TP) ; ELSE FLUSH TERMINATOR
781 ILLNAM: ERRUUO EQUOTE ILLEGAL-TENEX-FILE-NAME
783 TN.MLT: MOVE A,AB ; AOBJN POINTER TO ARGS IN A
785 TN.ML1: GETYP 0,(A) ; IS THIS ARG OF RIGHT TYPE
789 JRST RGPRSS ; ASSUME SINGLE STRING
791 JUMPL A,TN.ML1 ; TRY NEXT ARG IF ANY LEFT
793 MOVEI 0,T.NM1(TB) ; 1ST WORD OF DESTINATION
794 HLRO A,AB ; MINUS NUMBER OF ARGS IN A
795 MOVN A,A ; NUMBER OF ARGS IN A
798 MOVEI A,7 ; IF MORE THAN 10 ARGS, PUT 7
799 ADD A,0 ; LAST WORD OF DESTINATION
801 BLT 0,(A) ; BLT 'EM IN
802 ADD AB,[10,,10] ; SKIP THESE GUYS
808 ; ROUTINE TO OPEN A CHANNEL FOR ANY DEVICE. NAMES ARE ASSUMED TO ALREADY
809 ; BE ON BOTH TP STACK AND P STACK
811 OPNCH: MOVE C,T.SPDL+1(TB) ; GET PDL BASE
813 ANDI A,1 ; JUST WANT I AND O
816 ; .TRANS S.DEV(C) ; UNDO ANY TRANSLATIONS
817 ; JRST TRLOST ; COMPLAIN
824 MOVE A,S.DEV(C) ; GET SIXBIT DEVICE CODE
827 IFE ITS,[HRLZS A,S.DEV(C)
830 MOVSI B,-NDEVS ; AOBJN COUNTER
832 MOVE 0,DEVSTB(B) ; GET ONE FROM TABLE
834 DEVLP1: AND E,D ; FLUSH POSSIBLE DIGITNESS
836 JRST CHDIGS ; MAKE SURE REST IS DIGITS
838 JUMPN D,DEVLP1 ; KEEP TRUCKING UNTIL DONE
840 ; WASN'T THAT DEVICE, MOVE TO NEXT
841 NXTDEV: AOBJN B,DEVLP
842 JRST ODSK ; UNKNOWN DEVICE IS ASSUMED TO BE DISK
845 OUSR: HRRZ A,S.DIR(C) ; BLOCK OR UNIT?
846 TRNE A,2 ; SKIP IF UNIT
848 PUSHJ P,OPEN1 ; OPEN IT
849 PUSHJ P,FIXREA ; AND READCHST IT
850 MOVE B,T.CHAN+1(TB) ; RESTORE CHANNEL
851 MOVE 0,[PUSHJ P,DOIOT] ; GET AN IOINS
861 OSTY: HLRZ A,S.DIR(C)
862 IORI A,10 ; THE DONT LOSE BIT (DONT HANG ON INPUT DO ON OUTPUT)
867 ; MAKE SURE DIGITS EXIST
870 JUMPE D,DISPA ; NO DIGITS, WIN IMMEDIATE
872 AND E,D ; LEAVES ONLY DIGITS, IF WINNING
875 JUMPG D,.-2 ; KEEP GOING TIL DIGITS LEFT SHIFTED
880 JRST NXTDEV ; NOT A DIGIT, LOSE
881 JUMPE E,DISPA ; IF THAT'S ALL THE CHARACTERS, WIN!
883 ROTC D,6 ; GET NEXT CHARACTER INTO D
884 JRST CHDIG1 ; GO TEST?
886 ; HERE TO DISPATCH IF SUCCESSFUL
893 ; DISK DEVICE OPNER COME HERE
895 ODSK: MOVE A,S.SNM(C) ; GET SNAME
896 .SUSET [.SSNAM,,A] ; CLOBBER IT
897 PUSHJ P,OPEN0 ; DO REAL LIVE OPEN
901 ; TENEX DISK FILE OPENER
903 ODSK: MOVE B,T.CHAN+1(TB) ; GET CHANNEL
904 PUSHJ P,STSTK ; EXPAND STRING ONTO STACK (E POINTS TO OLD P)
907 PUSHJ P,STRTO6 ; GET DIR NAME
911 CAME C,[SIXBIT /PRINAO/]
912 CAMN C,[SIXBIT /PRINTO/]
913 IORI D,100 ; TURN ON BIT TO SAY USE OLD FILE
914 MOVSI A,101 ; START SETTING UP BITS EXTRA BIT FOR MSB
915 TRNE D,1 ; SKIP IF INPUT
916 TRNE D,100 ; WITE OVER?
917 TLOA A,100000 ; FORCE NEW VERSION
918 TLO A,400000 ; FORCE OLD
919 HRROI B,1(E) ; POINT TO STRING
921 TDZA 0,0 ; SAVE FACT OF NO SKIP
922 MOVEI 0,1 ; INDICATE SKIPPED
923 POP P,C ; RECOVER OPEN MODE SIXBIT
924 MOVE P,E ; RESTORE PSTACK
925 JUMPE 0,GTJLOS ; FIND OUT WHAT HAPPENED
927 MOVE B,T.CHAN+1(TB) ; GET CHANNEL
928 HRRZM A,CHANNO(B) ; SAVE IT
929 ANDI A,-1 ; READ Y TO DO OPEN
930 MOVSI B,440000 ; USE 36. BIT BYES
933 HRRI B,200000 ; ASSUME READ
934 CAMN C,[SIXBIT /READB/]
935 TRO B,2000 ; TURN ON THAWED IF READB
936 TRNE D,1 ; SKIP IF READ
937 HRRI B,300000 ; WRITE BIT
938 HRRZ 0,FSAV(TB) ; SEE IF REF DATE HACK
940 TRO B,400 ; SET DON'T MUNG REF DATE BIT
941 MOVE E,B ; SAVE BITS FOR REOPENS
944 MOVEI 0,C.OPN+C.READ+C.DISK
945 TRNE D,1 ; SKIP FOR READ
946 MOVEI 0,C.OPN+C.PRIN+C.DISK
947 TRNE D,2 ; SKIP IF NOT BINARY FILE
949 CAME C,[SIXBIT /PRINAO/]
950 CAMN C,[SIXBIT /PRINTO/]
951 TRO 0,C.RAND ; INDICATE RANDOM ACCESSING
954 HRRM 0,-2(B) ; MUNG THOSE BITS
955 ASH A,1 ; POINT TO SLOT
956 ADDI A,CHNL0 ; TO REAL SLOT
957 MOVEM B,1(A) ; SAVE CHANNEL
958 PUSHJ P,TMTNXS ; GET STRING FROM TENEX
959 MOVE B,CHANNO(B) ; JFN TO A
960 HRROI A,1(E) ; BASE OF STRING
961 MOVE C,[111111,,140001] ; WEIRD CONTROL BITS
963 MOVEI B,1(E) ; POINT TO START OF STRING
964 SUBM P,E ; RELATIVIZE E
965 PUSHJ P,TNXSTR ; MAKE INTO A STRING
966 SUB P,E ; BACK TO NORMAL
969 PUSHJ P,RGPRS1 ; PARSE INTO FIELDS
975 OPFLOS: MOVEI C,(A) ; SAVE ERROR CODE
977 HRRZ A,CHANNO(B) ; JFN BACK TO A
978 RLJFN ; TRY TO RELEASE IT
980 MOVEI A,(C) ; ERROR CODE BACK TO A
982 GTJLOS: MOVE B,T.CHAN+1(TB)
983 PUSHJ P,TGFALS ; GET A FALSE WITH REASON
986 STSTK: PUSH TP,$TCHAN
988 MOVEI A,4+5 ; COUNT CHARS NEEDED (NEED LAST 0 BYTE)
994 ANDI A,-1 ; TO 18 BITS
996 IDIVI A,5 ; TO WORDS NEEDED
997 POP P,C ; SAVE RET ADDR
998 MOVE E,P ; SAVE POINTER
999 PUSH P,[0] ; ALOCATE SLOTS
1001 PUSH P,C ; RET ADDR BACK
1002 INTGO ; IN CASE OVERFLEW
1004 MOVE B,(TP) ; IN CASE GC'D
1005 MOVE D,[440700,,1(E)] ; BYTE POINTER TO IT
1007 PUSHJ P,MOVSTR ; FLUSH IT ON
1010 MOVEI A,0 ; HERE TO SEE IF THIS IS REALLY L.N.
1013 LNMST ; LOOK UP LOGICAL NAME
1014 MOVNI A,1 ; NOT A LOGICAL NAME
1019 JUMPE A,ST.NM1 ; LOGICAL NAME, FLUSH SNAME
1020 HRRZ A,RSNAME-1(B) ; ANY SNAME AT ALL?
1021 JUMPE A,ST.NM1 ; NOPE, CANT HACK WITH IT
1025 PUSHJ P,MOVSTR ; SNAME UP
1028 ST.NM1: MOVEI A,RNAME1-1(B)
1038 MOVSTR: HRRZ 0,(A) ; CHAR COUNT
1039 MOVE A,1(A) ; BYTE POINTER
1042 IDPB C,D ; MUNG IT UP
1045 ; MAKE A TENEX ERROR MESSAGE STRING
1047 TGFALS: PUSH TP,$TCHAN
1049 PUSH P,A ; SAVE ERROR CODE
1050 PUSHJ P,TMTNXS ; STRING ON STACK
1051 HRROI A,1(E) ; POINT TO SPACE
1052 MOVE B,(E) ; ERROR CODE
1053 HRLI B,400000 ; FOR ME
1054 MOVSI C,-100. ; MAX CHARS
1055 ERSTR ; GET TENEX STRING
1059 MOVEI B,1(E) ; A AND B BOUND STRING
1060 SUBM P,E ; RELATIVIZE E
1061 PUSHJ P,TNXSTR ; BUILD STRING
1062 SUB P,E ; P BACK TO NORMAL
1064 IFE FNAMS, SUB P,[1,,1] ; FLUSH ERROR CODE SLOT
1094 PUSHJ P,IILIST ; BUILD LIST
1095 MOVSI A,TFALSE ; MAKE IT FALSE
1099 TGFLS1: MOVE P,E ; RESET STACK
1101 MOVE B,CHQUOTE UNKNOWN PROBLEM IN I/O
1105 ; OTHER BUFFERED DEVICES JOIN HERE
1109 PUSHJ P,FIXREA ; STORE THE "REAL" NAMES INTO THE CHANNEL
1111 OPBASC: MOVE C,T.SPDL+1(TB) ; C WAS CLOBBERED, GET IT BACK
1112 HRRZ A,S.DIR(C) ; FIND OUT IF OPEN IS ASCII OR WORD
1113 TRZN A,2 ; SKIP IF BINARY
1114 PUSHJ P,OPASCI ; DO IT FOR ASCII
1116 ; NOW SET UP IO INSTRUCTION FOR CHANNEL
1118 MAKION: MOVE B,T.CHAN+1(TB)
1120 JUMPE A,MAKIO1 ; JUMP IF INPUT
1121 MOVEI C,PUTCHR ; ELSE GET INPUT
1122 MOVEI 0,80. ; DEFAULT LINE LNTH
1128 MOVEM C,IOINS(B) ; STORE IT
1129 JUMPN A,OPNWIN ; GET AN EOF FORM FOR INPUT CHANNEL
1131 ; HERE TO CONS UP <ERROR END-OF-FILE>
1133 EOFMAK: MOVSI C,TATOM
1134 MOVE D,EQUOTE END-OF-FILE
1138 MOVE D,IMQUOTE ERROR
1140 MOVE D,T.CHAN+1(TB) ; RESTORE CHANNEL
1145 OPNWIN: MOVEI 0,10. ; SET UP RADIX
1146 MOVSI A,TCHAN ; OPEN SUCCEEDED, RET CHANNEL
1150 OPNRET: MOVE D,T.CHAN+1(TB) ; IN CASE WE RECYCLE IT
1151 MOVE C,(P) ; RET ADDR
1152 SUB P,[S.X3+2,,S.X3+2]
1153 SUB TP,[T.CHAN+2,,T.CHAN+2]
1157 ; HERE TO CREATE CHARACTER BUFFERS FOR ASCII I/O
1159 OPASCI: PUSH P,A ; CONTAINS MODE, SAVE IT
1160 MOVEI A,BUFLNT ; GET SIZE OF BUFFER
1161 PUSHJ P,IBLOCK ; GET STORAGE
1162 MOVSI 0,TWORD+.VECT. ; SET UTYPE
1163 MOVEM 0,BUFLNT(B) ; AND STORE
1165 SKIPE (P) ; SKIP IF INPUT
1167 MOVEI D,BUFLNT-1(B) ; REST BYTE POINTER
1168 OPASCA: HRLI D,010700
1169 MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK
1171 IORM 0,-2(B) ; TURN ON BUFFER BIT
1173 MOVEM D,BUFSTR(B) ; CLOBBER
1177 OPASCO: HRROI C,777776
1178 MOVEM C,(B) ; -1 THE BUFFER (LEAVE OFF LOW BIT)
1180 HRRI C,1(B) ; BUILD BLT POINTER
1181 BLT C,BUFLNT-1(B) ; ZAP
1182 MOVEI D,-1(B) ; START MAKING STRING POINTER
1183 HRRI A,BUFLNT*5 ; SET UP CHAR COUNT
1187 ; OPEN NON FILE ORIENTED DEVICES (NUL, PTR, PTP ETC.)
1192 OPTR: PUSHJ P,OPEN0 ; SET UP MODE AND OPEN
1193 SETZM S.NM1(C) ; CLOBBER UNINTERESTING FIELDS
1198 ; OPEN DEVICES THAT IGNORE SNAME
1206 ; INTERNAL CHANNEL OPENER
1208 OINT: HRRZ A,S.DIR(C) ; CHECK DIR
1209 CAIL A,2 ; READ/PRINT?
1210 JRST WRONGD ; NO, LOSE
1212 MOVE 0,INTINS(A) ; GET INS
1213 MOVE D,T.CHAN+1(TB) ; AND CHANNEL
1214 MOVEM 0,IOINS(D) ; AND CLOBBER
1215 MOVEI 0,C.OPN+C.READ
1217 MOVEI 0,C.OPN+C.PRIN
1219 SETOM STATUS(D) ; MAKE SURE NOT AA TTY
1220 PMOVEM T.XT(TB),INTFCN-1(D)
1222 ; HERE TO SAVE PSEUDO CHANNELS
1224 SAVCHN: HRRZ E,CHNL0+1 ; POINT TO CURRENT LIST
1226 PUSHJ P,ICONS ; CONS IT ON
1230 ; INT DEVICE I/O INS
1232 INTINS: PUSHJ P,GTINTC
1236 ; HERE TO OPEN THE NET DEVICE (I.E. THE ARPA NET)
1239 ONET: HRRZ A,S.DIR(C) ; DIRECTION CODE
1241 IORI A,4 ; TURN ON IMAGE BIT
1242 SKIPGE S.NM1(C) ; NAME1 I.E. LOCAL HOST GIVEN
1243 IORI A,10 ; NO, WE WILL LET ITS GIVE US ONE
1244 SKIPGE S.NM2(C) ; NORMAL OR "LISTEN"
1245 IORI A,20 ; TURN ON LISTEN BIT
1246 MOVEI 0,7 ; DEFAULT BYTE SIZE
1248 MOVEI 0,36. ; IMAGE WHICH IS 36
1249 SKIPN T.XT(TB) ; BYTE SIZE GIVEN?
1250 MOVEM 0,S.X1(C) ; NO, STORE DEFAULT
1251 SKIPG D,S.X1(C) ; BYTE SIZE REASONABLE?
1252 JRST RBYTSZ ; NO <0, COMPLAIN
1253 TRNE A,2 ; SKIP TO CHECK ASCII
1254 JRST ONET2 ; CHECK IMAGE
1255 CAIN D,7 ; 7-BIT WINS
1257 CAIE D,44 ; 36-BIT INDICATES BLOCK ASCII MODE
1259 IORI A,2 ; SET BLOCK FLAG
1261 IORI A,40 ; USE 8-BIT MODE
1262 CAIN D,10 ; IS IT RIGHT
1266 RBYTSZ: ERRUUO EQUOTE BYTE-SIZE-BAD
1269 ONET2: CAILE D,36. ; IMAGE SIZE REASONABLE?
1272 JRST ONET1 ; YES, DONT SET FIELD
1274 ASH D,9. ; POSITION FOR FIELD
1275 IORI A,40(D) ; SET IT AND ITS BIT
1277 ONET1: HRLM A,S.DIR(C) ; CLOBBER OPEN BLOCK
1278 MOVE E,A ; SAVE BLOCK MODE INFO
1279 PUSHJ P,OPEN1 ; DO THE OPEN
1282 ; CLOBBER REAL SLOTS FOR THE OPEN
1284 MOVEI A,3 ; GET STATE VECTOR
1290 MOVSI A,TFIX+.VECT. ; SET U TYPE
1295 PUSHJ P,INETST ; GET STATE
1297 POP P,A ; IS THIS BLOCK MODE
1298 MOVEI 0,80. ; POSSIBLE LINE LENGTH
1299 TRNE A,1 ; SKIP IF INPUT
1301 TRNN A,2 ; BLOCK MODE?
1303 TRNN A,4 ; ASCII MODE?
1304 JRST OPBASC ; GO SETUP BLOCK ASCII
1305 MOVE 0,[PUSHJ P,DOIOT]
1310 ; INTERNAL ROUTINE TO GET THE CURRENT STATE OF THE NETWROK CHANNEL
1312 INETST: MOVE A,S.NM1(C)
1316 LDB A,[1100,,S.SNM(C)]
1319 MOVE E,BUFRIN(B) ; GET STATE BLOCK
1320 INTST1: HRRE 0,S.X1(C)
1328 ; ACCEPT A CONNECTION
1330 MFUNCTION NETACC,SUBR
1332 PUSHJ P,ARGNET ; CHECK THAT ARG IS AN OPEN NET CHANNEL
1333 MOVE A,CHANNO(B) ; GET CHANNEL
1334 LSH A,23. ; TO AC FIELD
1337 JRST IFALSE ; RETURN FALSE
1342 ; FORCE SYSTEM NETWORK BUFFERS TO BE SENT
1349 SKIPA A,CHANNO(B) ; GET CHANNEL
1356 ; SUBR TO RETURN UPDATED NET STATE
1358 MFUNCTION NETSTATE,SUBR
1360 PUSHJ P,ARGNET ; IS IT A NET CHANNEL
1364 ; INTERNAL NETSTATE ROUTINE
1366 INSTAT: MOVE C,P ; GET PDL BASE
1367 MOVEI 0,S.X3 ; # OF SLOTS NEEDED
1370 ; RESTORED FROM MUDDLE 54. IT SEEMED TO WORK THERE, AND THE STUFF
1371 ; COMMENTED OUT HERE CERTAINLY DOESN'T.
1375 ; HRR D,CHANNO(B) ; SETUP FOR RFNAME CALL
1376 ; DOTCAL RFNAME,[D,[2003,,S.DEV],[2003,,S.NM1],[2003,,S.NM2],[2003,,S.SNM]]
1377 ; .LOSE %LSFIL ; THIS MAY NOT BE DESIRABLE, BUT I ASSUME WE CARE IF
1379 PUSHJ P,INETST ; INTO VECTOR
1385 ; INTERNAL ROUTINE TO CHECK FOR CORRECT CHANNEL TYPE
1391 MOVE B,1(AB) ; GET CHANNEL
1392 SKIPN CHANNO(B) ; OPEN?
1394 MOVE A,RDEVIC-1(B) ; GET DEV NAME
1398 CAME A,[SIXBIT /NET /]
1401 MOVE A,DIRECT-1(B) ; CHECK FOR A READ SOCKET
1404 MOVE B,1(AB) ; RESTORE CHANNEL
1410 ; TENEX NETWRK OPENING CODE
1412 ONET: MOVE B,T.CHAN+1(TB) ; GET CHANNEL
1416 PUSH P,[ASCII /NET:/] ; FOR STRINGS
1417 GETYP 0,RNAME1-1(B) ; CHECK TYPE
1418 CAIE 0,TFIX ; SKIP IF # SUPPLIED
1420 MOVE 0,RNAME1(B) ; GET IT
1424 ONET1: CAIE 0,TCHSTR
1451 ONET3: CAIE 0,TCHSTR
1461 ONET5: MOVE B,T.CHAN+1(TB)
1470 HRROI B,1(E) ; STRING POINTER
1471 GTJFN ; GET THE G.D JFN
1472 TDZA 0,0 ; REMEMBER FAILURE
1474 MOVE P,E ; RESTORE P
1475 JUMPE 0,GTJLOS ; CONS UP ERROR STRING
1478 HRRZM A,CHANNO(B) ; SAVE THE JFN
1493 TRNE D,1 ; SKIP FOR INPUT
1495 ANDI A,-1 ; ISOLATE JFCN
1497 JRST OPFLOS ; REPORT ERROR
1499 ASH A,1 ; POINT TO SLOT
1500 ADDI A,CHNL0 ; TO REAL SLOT
1501 MOVEM B,1(A) ; SAVE CHANNEL
1502 MOVE C,T.SPDL+1(TB) ; POINT TO P BASE
1503 HRRZ A,S.DIR(C) ; 0/ 0 FOR READ 0/ 1 FOR PRINT
1504 MOVEI 0,C.OPN+C.READ
1506 MOVEI 0,C.OPN+C.PRIN
1511 CVSKT ; GET ABS SOCKET #
1512 FATAL NETWORK BITES THE BAG!
1524 MOVE 0,[PUSHJ P,DONETO]
1525 TRNN C,1 ; SKIP FOR OUTPUT
1526 MOVE 0,[PUSHJ P,DONETI]
1528 MOVEI 0,80. ; LINELENGTH
1529 TRNE C,1 ; SKIP FOR INPUT
1531 MOVEI A,3 ; GET STATE UVECTOR
1540 MOVE A,CHANNO(B) ; GET JFN
1546 MOVEM B,(C) ; INITIAL STATE STORED
1550 ; DOIOT FOR TENEX NETWRK
1561 MOVEI 0,(A) ; POSSIBLE OUTPUT CHAR TO 0
1567 MOVEI A,(B) ; RET CHAR IN A
1590 JFFO 0,FIXS3 ; PUT OCTAL DIGITS INTO STIRNG
1602 ROTC 0,3 ; NEXT DIGIT
1611 TLNE C,760000 ; SKIP IF NEW WORD
1620 MOVEM D,RNAME2(E) ; UPDATE FOREIGN SOCHKET
1621 MOVEM C,RSNAME(E) ; AND HOST
1623 XCT ITSTRN(B) ; XLATE TO LOOK MORE LIKE ITS
1624 MOVEM B,(C) ; STORE STATE
1644 NLOSS: FATAL ILLEGAL NETWORK STATE
1646 NOPND: MOVE B,DIRECT(E) ; SEE IF READ OR PRINT
1647 ILDB B,B ; GET 1ST CHAR
1648 CAIE B,"R ; SKIP FOR READ
1650 SIBE ; SEE IF INPUT EXISTS
1654 MOVEM B,2(C) ; STORE BYTES IN STATE VECTOR
1655 MOVEI B,11 ; RETURN DATA PRESENT STATE
1658 NOPNDW: SOBE ; SEE IF OUTPUT PRESENT
1666 NCLSD: MOVE B,DIRECT(E)
1680 MFUNCTION NETSTATE,SUBR
1691 CAME A,MODES+1 ; PRINT OR PRINTB?
1697 NETRET: MOVE B,1(AB)
1701 MFUNCTION NETACC,SUBR
1711 ; HERE TO OPEN TELETYPE DEVICES
1713 OTTY: HRRZ A,S.DIR(C) ; GET DIR CODE
1714 TRNE A,2 ; SKIP IF NOT READB/PRINTB
1715 JRST WRONGD ; CANT DO THAT
1718 MOVE A,S.NM1(C) ; CHECK FOR A DIR
1720 CAMN A,[SIXBIT /.FILE./]
1721 CAME 0,[SIXBIT /(DIR)/]
1723 JRST OUTN ; DO IT THAT WAY
1725 HRRZ A,S.DIR(C) ; CHECK DIR
1729 PUSH P,S.DEV(C) ; SAVE THE SIXBIT DEV NAME
1730 ; HRLZS (P) ; POSTITION DEVICE NAME
1732 TTYLP: SKIPN D,1(E) ; CHANNEL OPEN?
1733 JRST TTYLP1 ; NO, GO TO NEXT
1734 MOVE A,RDEVIC-1(D) ; GET DEV NAME
1736 PUSHJ P,STRTO6 ; TO 6 BIT
1737 POP P,A ; GET RESULT
1739 JRST SAMTYQ ; COULD BE THE SAME
1740 TTYLP1: ADD E,[2,,2]
1742 SUB P,[1,,1] ; THIS ONE MUST BE UNIQUE
1743 TTYLP2: MOVE C,T.SPDL+1(TB) ; POINT TO P BASE
1744 HRRZ A,S.DIR(C) ; GET DIR OF OPEN
1745 SKIPE A ; IF OUTPUT,
1746 IORI A,20 ; THEN USE DISPLAY MODE
1747 HRLM A,S.DIR(C) ; STORE IN OPEN BLOCK
1748 PUSHJ P,OPEN2 ; OPEN THE TTY
1749 MOVE A,S.DEV(C) ; GET DEVICE NAME
1750 PUSHJ P,6TOCHS ; TO A STRING
1751 MOVE D,T.CHAN+1(TB) ; POINT TO CHANNEL
1754 MOVE C,T.SPDL+1(TB) ; RESTORE PDL BASE
1755 MOVE B,D ; CHANNEL TO B
1756 HRRZ 0,S.DIR(C) ; AND DIR
1758 TTY1: DOTCAL TTYGET,[CHANNO(B),[2000,,0],[2000,,A],[2000,,D]]
1760 DOTCAL TTYSET,[CHANNO(B),MODE1,MODE2,D]
1762 MOVE A,[PUSHJ P,GMTYO]
1764 DOTCAL RSSIZE,[CHANNO(B),[2000,,A],[2000,,D]]
1772 IOTMAK: HRLZ A,CHANNO(B) ; GET CHANNEL
1774 IOR A,[.IOT A] ; BUILD IOT
1775 MOVEM A,IOINS(B) ; AND STORE IT
1779 ; HERE IF POSSIBLY OPENING AN ALREADY OPEN TTY
1781 SAMTYQ: MOVE D,1(E) ; RESTORE CURRENT CHANNEL
1782 MOVE A,DIRECT-1(D) ; GET DIR
1785 POP P,A ; GET SIXBIT
1788 CAME A,MODES(C) ; SKIP IF DIFFERENT DIRECTION
1791 ; HERE IF A RE-OPEN ON A TTY
1793 HRRZ 0,FSAV(TB) ; IS IT FROM A FOPEN
1795 JRST RETOLD ; RET OLD CHANNEL
1798 PUSH TP,1(E) ; PUSH OLD CHANNEL
1800 PUSH TP,T.CHAN+1(TB)
1801 MOVE A,[PUSHJ P,CHNFIX]
1802 MOVEI PVP,0 ; SAY MIGHT BE NON-ATOMS
1806 RETOLD: MOVE B,1(E) ; GET CHANNEL
1807 AOS CHANNO-1(B) ; AOS REF COUNT
1809 SUB P,[1,,1] ; CLEAN UP STACK
1810 JRST OPNRET ; AND LEAVE
1813 ; ROUTINE TO PASS TO GCHACK TO FIX UP CHANNEL POINTER
1815 CHNFIX: CAIN C,TCHAN
1818 MOVE D,-2(TP) ; GET REPLACEMENT
1820 MOVEM D,1(B) ; CLOBBER IT AWAY
1825 MOVE C,T.SPDL+1(TB) ; POINT TO P BASE
1826 HRRZ 0,S.DIR(C) ; 0/ 0 FOR READ 0/ 1 FOR PRINT
1827 MOVE A,[PUSHJ P,INMTYO]
1830 MOVEI A,100 ; PRIM INPUT JFN
1832 MOVEI E,C.OPN+C.READ
1834 MOVEM B,CHNL0+2*100+1
1836 TNXTY1: MOVEM B,CHNL0+2*101+1
1837 MOVEI A,101 ; PRIM OUTPUT JFN
1838 MOVEI E,C.OPN+C.PRIN
1840 TNXTY2: MOVEM A,CHANNO(B)
1843 ; SETUP FUNNY BUFFER FOR TTY INPUT DEVICES
1845 TTYSPC: MOVEI A,EXTBFR ; GET EXTRA BUFFER
1846 PUSHJ P,IBLOCK ; GET BLOCK
1847 MOVE D,T.CHAN+1(TB) ;RESTORE CHANNEL POINTER
1859 MOVEM A,EXBUFR-1(D) ; FOR WAITING TTY BUFFERS
1860 SETZM EXBUFR(D) ; NIL LIST
1861 MOVEM B,BUFRIN(D) ;STORE IN CHANNEL
1862 MOVSI A,TUVEC ;MAKE SURE TYPE IS UNIFORM VECTOR
1864 MOVEI A,177 ;SET ERASER TO RUBOUT
1866 SETZM KILLCH(B) ;NO KILL CHARACTER NEEDED
1867 MOVEI A,33 ;BREAKCHR TO C.R.
1869 MOVEI A,"\ ;ESCAPER TO \
1871 MOVE A,[010700,,BYTPTR(E)] ;RELATIVE BYTE POINTER
1873 MOVEI A,14 ;BARF BACK CHARACTER FF
1878 ; SETUP DEFAULT TTY INTERRUPT HANDLER
1881 PUSH TP,MQUOTE CHAR,CHAR,INTRUP
1883 PUSH TP,[10] ; PRIORITY OF CHAR INT
1886 MCALL 3,EVENT ; 1ST MAKE AN EVENT EXIST
1890 PUSH TP,[QUITTER] ; DEFAULT HANDLER IS QUITTER
1893 ; BUILD A NULL STRING
1896 PUSHJ P,IBLOCK ; USE A BLOCK
1906 MOVE B,D ; CHANNEL TO B
1910 ; ROUTINE TO OPEN ITS CHANNEL WITHOUT .RCHST
1913 OPEN2: MOVEI A,S.DIR(C) ; POINT TO OPEN BLOCK
1914 PUSHJ P,MOPEN ; OPEN THE FILE
1916 MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK
1917 MOVEM A,CHANNO(B) ; SAVE THE CHANNEL
1920 ; FIX UP MODE AND FALL INTO OPEN
1922 OPEN0: HRRZ A,S.DIR(C) ; GET DIR
1923 TRNE A,2 ; SKIP IF NOT BLOCK
1924 IORI A,4 ; TURN ON IMAGE
1925 IORI A,2 ; AND BLOCK
1929 PUSH TP,C ; SAVE CRUFT TO CHECK FOR PRINTO, HA HA
1932 MOVE B,DIRECT(B) ; THIS KLUDGE THE MESS OF NDR
1935 POP P,D ; THE SIXBIT FOR KLUDGE
1936 POP P,A ; GET BACK THE RANDOM BITS
1938 CAME D,[SIXBIT /PRINAO/]
1939 CAMN D,[SIXBIT /PRINTO/]
1940 IORI A,100000 ; WRITEOVER BIT
1943 IORI A,10 ; DON'T CHANGE REF DATE
1944 OPEN9: HRLM A,S.DIR(C) ; AND STORE IT
1946 ; ROUTINE TO ATTEMPT TO OPEN A REAL ITS CHANNEL
1948 OPEN1: MOVEI A,S.DIR(C) ; POINT TO OPEN BLOCK
1951 MOVE B,T.CHAN+1(TB) ; GET CHANNEL BACK
1952 MOVEM A,CHANNO(B) ; CLOBBER INTO CHANNEL
1953 DOTCAL RFNAME,[A,[2003,,S.DEV],[2003,,S.NM1],[2003,,S.NM2],[2003,,S.SNM]]
1956 ; NOW CLOBBER THE TVP SLOT FOR THIS CHANNEL
1958 OPEN3: MOVE A,S.DIR(C)
1959 MOVEI 0,C.OPN+C.READ
1961 MOVEI 0,C.OPN+C.PRIN
1965 MOVE A,CHANNO(B) ; GET CHANNEL #
1967 ADDI A,CHNL0 ; POINT TO SLOT
1968 MOVEM B,1(A) ; NOT: TYPE ALREADY SETUP
1970 ; NOW GET STATUS WORD
1972 DOSTAT: HRRZ A,CHANNO(B) ; NOW GET STATUS WORD
1973 DOTCAL STATUS,[A,[2002,,STATUS]]
1978 ; HERE IF OPEN FAILS (CHANNEL IS IN A)
1980 OPNLOS: JUMPL A,NOCHAN ; ALL CHANNELS ARE IN USE
1981 LSH A,23. ; DO A .STATUS
1985 PUSHJ P,GFALS ; GET A FALSE WITH A MESSAGE
1986 SUB P,[1,,1] ; EXTRA RET ADDR FLUSHED
1987 JRST OPNRET ; AND RETURN
1992 IFN ITS, PUSHJ P,GFALS
1993 IFE ITS, PUSHJ P,TGFALS
1996 ; ROUTINE TO CONS UP FALSE WITH REASON
1998 GFALS: PUSH TP,$TCHAN
2000 PUSH P,[SIXBIT / ERR/] ; SET UP OPEN TO ERR DEV
2001 PUSH P,[3] ; SAY ITS FOR CHANNEL
2003 .OPEN 0,-2(P) ; USE CHANNEL 0 FOR THIS
2004 FATAL CAN'T OPEN ERROR DEVICE
2005 SUB P,[3,,3] ; DONT WANT OPEN BLOCK NOW
2007 MOVEI A,0 ; PREPARE TO BUILD STRING ON STACK
2008 EL1: PUSH P,[0] ; WHERE IT WILL GO
2009 MOVSI B,(<440700,,(P)>) ; BYTE POINTER TO TOP OF STACK
2010 EL2: .IOT 0,0 ; GET A CHAR
2011 JUMPL 0,EL3 ; JUMP ON -1,,3
2013 JRST EL3 ; YES, MAKE STRING
2014 CAIN 0,14 ; IGNORE FORM FEEDS
2015 JRST EL2 ; IGNORE FF
2016 CAIE 0,15 ; IGNORE CR & LF
2020 TLNE B,760000 ; SIP IF WORD FULL
2022 AOJA A,EL1 ; COUNT WORD AND GO
2036 MOVSI B,(<440700,,(P)>)
2038 IRP XX,,[RDEVIC,RSNAME,RNAME1,RNAME2]YY,,[0,72,73,40]
2049 SKIPN (P) ; ANY CHARS AT END?
2050 SUB P,[1,,1] ; FLUSH XTRA
2051 PUSH P,A ; PUT UP COUNT
2052 .CLOSE 0, ; CLOSE THE ERR DEVICE
2053 PUSHJ P,CHMAK ; MAKE STRING
2060 IFE FNAMS, MOVEI A,1
2067 MOVSI A,TFALSE ; MAKEIT A FALSE
2068 IFN FNAMS, SUB TP,[2,,2]
2075 MOVSI B,(<440700,,(P)>)
2086 ; ROUTINE TO FILL IN THE "REAL" SLOTS FOR THE CHANNEL
2089 IFE ITS, HRLZS S.DEV(C) ; KILL MODE BITS
2092 FIXRE1: MOVEI A,(D) ; COPY REL POINTER
2093 ADD A,T.SPDL+1(TB) ; POINT TO SLOT
2094 SKIPN A,(A) ; SKIP IF GOODIE THERE
2096 PUSHJ P,6TOCHS ; MAKE INOT A STRING
2097 MOVE C,RDTBL-S.DEV(D); GET OFFSET
2101 FIXRE2: AOBJN D,FIXRE1
2106 HRR A,CHANNO(B) ; GET CHANNEL
2107 DOTCAL OPEN,[A,-3(P),-2(P),-1(P),(P)]
2113 ;THIS ROUTINE CONVERTS MUDDLE CHARACTER STRINGS TO SIXBIT FILE NAMES
2116 PUSH P,E ;SAVE USEFUL FROB
2117 MOVEI E,(A) ; CHAR COUNT TO E
2119 CAIE A,TCHSTR ; IS IT ONE WORD?
2121 CAILE E,6 ; SKIP IF L=? 6 CHARS
2123 CHREAD: MOVEI A,0 ;INITIALIZE OUTPUT WORD
2124 MOVE D,[440600,,A] ;AND BYTE POINTER TO IT
2125 NEXCHR: SOJL E,SIXDON
2126 ILDB 0,B ; GET NEXT CHAR
2127 CAIN 0,^Q ; CNTL-Q, QUOTES NEXT CHAR
2129 JUMPE 0,SIXDON ;IF NULL, WE ARE FINISHED
2130 PUSHJ P,A0TO6 ; CONVERT TO SIXBIT
2131 IDPB 0,D ;DEPOSIT INTO SIX BIT
2132 JRST NEXCHR ; NO, GET NEXT
2133 SIXDON: SUB TP,[2,,2] ;FIX UP TP
2135 EXCH A,(P) ;LEAVE RESULT ON P-STACK
2136 JRST (A) ;NOW RETURN
2139 ;SUBROUTINE TO CONVERT SIXBIT TO ATOM
2143 MOVEI B,0 ;MAX NUMBER OF CHARACTERS
2144 PUSH P,[0] ;STRING WILL GO ON P SATCK
2145 JUMPE A,GETATM ; EMPTY, LEAVE
2146 MOVEI E,-1(P) ;WILL BE BYTE POINTER
2147 HRLI E,10700 ;SET IT UP
2148 PUSH P,[0] ;SECOND POSSIBLE WORD
2149 MOVE D,[440600,,A] ;INPUT BYTE POINTER
2150 6LOOP: ILDB 0,D ;START CHAR GOBBLING
2151 ADDI 0,40 ;CHANGET TOASCII
2152 IDPB 0,E ;AND STORE IT
2153 TLNN D,770000 ; SKIP IF NOT DONE
2155 TDNN A,MSKS(B) ; CHECK IF JUST SPACES LEFT
2156 AOJA B,GETATM ; YES, DONE
2157 AOJA B,6LOOP ;KEEP LOOKING
2158 6LOOP1: PUSH P,[6] ;IF ARRIVE HERE, STRING IS 2 WORDS
2160 GETATM: MOVEM B,(P) ;SET STRING LENGTH=1
2161 PUSHJ P,CHMAK ;MAKE A MUDDLE STRING
2175 A0TO6: CAIL 0,141 ;IF IT IS GREATER OR EQUAL TO LOWER A
2176 CAILE 0,172 ;BUT LESS THAN OR EQUAL TO LOWER Z
2178 SUBI 0,40 ;CONVERT TO UPPER CASE
2179 SUBI 0,40 ;NOW TO SIX BIT
2180 JUMPL 0,BAD6 ;CHECK FOR A WINNER
2185 ; SUBR TO TEST THE EXISTENCE OF FILES
2187 MFUNCTION FEXIST,SUBR,[FILE-EXISTS?]
2193 PUSH TP,P ; SAVE P-STACK BASE
2195 MOVSI E,-4 ; 4 THINGS TO PUSH
2197 IFN ITS, MOVE B,@RNMTBL(E)
2198 IFE ITS, MOVE B,@FETBL(E)
2203 CAIE 0,TCHSTR ; SKIP IF WINS
2206 IFN ITS, PUSHJ P,STRTO6 ; CONVERT TO SIXBIT
2211 PUSH TP,A ; DEFAULT TYPE AND VALUE GIVEN BY USER
2212 PUSH TP,B ; IN VALUE OF DEV, SNM, NM1, NM2
2218 IFN ITS, PUSH P,EXISTS(E) ; USE DEFAULT
2220 PUSH TP,FETYP(E) ; DEFAULT TYPE AND VALUE IF NO
2221 PUSH TP,FEVAL(E) ; DEFAULT GIVEN BY USER
2225 PUSHJ P,RGPRS ; PARSE THE ARGS
2226 JRST TMA ; TOO MANY ARGUMENTS
2229 MOVE 0,-3(P) ; GET SIXBIT DEV NAME
2231 CAMN 0,[SIXBITS /DSK /]
2232 MOVSI B,10 ; DONT SET REF DATE IF DISK DEV
2234 DOTCAL OPEN,[B,[17,,-3],[17,,-2],[17,,-1],[17,,0]]
2237 JRST FDLWON ; WON!!!
2238 .STATUS 0,A ; FIND THE STATUS OF CHANNEL BEFORE POPING
2244 SUBI B,10 ; GET B TO POINT CORRECTLY TO ARGS
2245 PUSHJ P,STSTK ; GET FILE NAME IN A STRING
2246 HRROI B,1(E) ; POINT B TO THE STRING
2249 JRST TDLLOS ; FILE DOES NOT EXIST
2250 RLJFN ; FILE EXIST SO RETURN JFN
2252 JRST FDLWON ; SUCCESS
2256 EXISTS: SIXBITS /DSK INPUT > /
2269 FEVAL: 440700,,[ASCIZ /INPUT/]
2270 440700,,[ASCIZ /MUD/]
2271 440700,,[ASCIZ /DSK/]
2275 ; SUBR TO DELETE AND RENAME FILES
2277 MFUNCTION RENAME,SUBR
2283 PUSH TP,P ; SAVE P-STACK BASE
2284 GETYP 0,(AB) ; GET 1ST ARG TYPE
2286 CAIN 0,TCHAN ; CHANNEL?
2287 JRST CHNRNM ; MUST BE RENAME WHILE OPEN FOR WRITING
2291 PUSH P,[377777,,377777]
2293 MOVSI E,-4 ; 4 THINGS TO PUSH
2294 RNMALP: MOVE B,@RNMTBL(E)
2299 CAIE 0,TCHSTR ; SKIP IF WINS
2302 IFN ITS, PUSHJ P,STRTO6 ; CONVERT TO SIXBIT
2311 RNMLP1: PUSH P,RNSTBL(E) ; USE DEFAULT
2315 PUSHJ P,RGPRS ; PARSE THE ARGS
2316 JRST RNM1 ; COULD BE A RENAME
2318 ; HERE TO DELETE A FILE
2320 DELFIL: MOVE A,(P) ; AND GET SNAME
2322 DOTCAL DELETE,[[17,,-3],[17,,-2],[17,,-1],[17,,0]]
2323 JRST FDLST ; ANALYSE ERROR
2325 FDLWON: MOVSI A,TATOM
2333 MOVE A,(TP) ; GET BASE OF PDL
2334 MOVEI A,1(A) ; POINT TO CRAP
2335 CAMGE AB,[-3,,] ; SKIP IF DELETE
2336 HLLZS (A) ; RESET DEFAULT
2342 ADD AB,[2,,2] ; PAST ARG
2343 JUMPL AB,RNM1 ; GO TRY FOR RENAME
2344 MOVE P,(TP) ; RESTORE P STACK
2345 MOVEI C,(A) ; FOR RELEASE
2346 DELF ; ATTEMPT DELETE
2348 RLJFN ; MAKE SURE FLUSHED
2351 FDLWON: MOVSI A,TATOM
2362 POP P,A ; ERR NUMBER BACK
2364 PUSHJ P,TGFALS ; GET FALSE WITH REASON
2367 DELLOS: PUSH P,A ; SAVE ERROR
2371 ;TABLE OF REANMAE DEFAULTS
2378 RNSTBL: SIXBIT /DSK _MUDS_> /
2386 RNSTBL: -1,,[ASCIZ /DSK/]
2388 -1,,[ASCIZ /_MUDS_/]
2391 ; HERE TO DO A RENAME
2393 RNM1: JUMPGE AB,TMA ; IF ARGS EXHAUSTED, MUST BE TOO MUCH STRING
2395 MOVE C,1(AB) ; GET ARG
2396 CAIN 0,TATOM ; IS IT "TO"
2398 JRST WRONGT ; NO, LOSE
2399 ADD AB,[2,,2] ; BUMP PAST "TO"
2402 MOVEM P,T.SPDL+1(TB) ; SAVE NEW P-BASE
2404 MOVEI 0,4 ; FOUR DEFAULTS
2405 PUSH P,-3(P) ; DEFAULT DEVICE IS CURRENT
2408 PUSHJ P,RGPRS ; PARSE THE NEXT STRING
2411 MOVE A,-7(P) ; FIX AND GET DEV1
2412 MOVE B,-3(P) ; SAME FOR DEV2
2416 POP P,A ; GET SNAME 2
2417 CAME A,(P)-3 ; SNAME 1
2420 POP P,-2(P) ; MOVE NAMES DOWN
2422 DOTCAL RENAME,[[17,,-4],[17,,-3],[17,,-2],A,[17,,-1],(P)]
2426 ; HERE FOR RENAME WHILE OPEN FOR WRITING
2428 CHNRNM: ADD AB,[2,,2] ; NEXT ARG
2430 MOVE B,-1(AB) ; GET CHANNEL
2431 SKIPN CHANNO(B) ; SKIP IF OPEN
2433 MOVE A,DIRECT-1(B) ; CHECK DIRECTION
2435 PUSHJ P,STRTO6 ; TO 6 BIT
2437 CAME A,[SIXBIT /PRINT/]
2438 CAMN A,[SIXBIT /PRINTB/]
2440 CAMN A,[SIXBIT /PRINAO/]
2442 CAME A,[SIXBIT /PRINTO/]
2445 ; SET UP .FDELE BLOCK
2449 MOVEM P,T.SPDL+1(TB)
2451 PUSH P,[SIXBIT /_MUDL_/]
2455 PUSHJ P,RGPRS ; PARSE THESE
2458 SUB P,[1,,1] ; SNAME/DEV IGNORED
2459 MOVE AB,ABSAV(TB) ; GET ORIG ARG POINTER
2461 MOVE A,CHANNO(B) ; ITS CHANNEL #
2462 DOTCAL RENMWO,[A,[17,,-1],(P)]
2464 MOVE A,CHANNO(B) ; ITS CHANNEL #
2465 DOTCAL RFNAME,[A,[2017,,-4],[2017,,-3],[2017,,-2],[2017,,-1]]
2467 MOVE A,-3(P) ; UPDATE CHANNEL
2468 PUSHJ P,6TOCHS ; GET A STRING
2486 MOVE A,(TP) ; PBASE BACK
2493 MOVEI C,(A) ; FOR RELEASE ATTEMPT
2499 MOVEI A,(C) ; MAKE SURR OTHER IS FLUSHED
2507 MOVEI A,(A) ; LNTH OF STRING
2509 JUMPN B,NONUAD ; DONT NEED TO ADD ONE
2514 PUSHJ P,CISTNG ; COPY OF STRING
2521 ; HERE FOR LOSING .FDELE
2524 FDLST: .STATUS 0,A ; GET STATUS
2526 PUSHJ P,GFALS ; ANALYZE IT
2530 ; SOME .FDELE ERRORS
2532 DEVDIF: ERRUUO EQUOTE DEVICE-OR-SNAME-DIFFERS
2534 \f; HERE TO RESET A READ CHANNEL
2536 MFUNCTION FRESET,SUBR,RESET
2542 MOVE B,1(AB) ;GET CHANNEL
2543 SKIPN IOINS(B) ; OPEN?
2544 JRST REOPE1 ; NO, IGNORE CHECKS
2546 MOVE A,STATUS(B) ;GET STATUS
2548 JUMPE A,REOPE1 ;IF IT CLOSED, JUST REOPEN IT, MAYBE?
2549 CAILE A,2 ;SKIPS IF TTY FLAVOR
2555 CAIN A,101 ; TTY-OUT
2562 REATT1: MOVEI B,DIRECT-1(B) ;POINT TO DIRECTION
2563 PUSHJ P,CHRWRD ;CONVERT TO A WORD
2565 CAME B,[ASCII /READ/]
2567 MOVE B,1(AB) ;RESTORE CHANNEL
2568 PUSHJ P,RRESET" ;DO REAL RESET
2571 REOPEN: PUSH TP,(AB) ;FIRST CLOSE IT
2574 MOVE B,1(AB) ;RESTORE CHANNEL
2576 ; SET UP TEMPS FOR OPNCH
2578 REOPE1: PUSH P,[0] ; WILL HOLD DIR CODE
2581 IRP A,,[DIRECT,RNAME1,RNAME2,RDEVIC,RSNAME,ACCESS]
2590 MOVE B,T.DIR+1(TB) ; GET DIRECTION
2591 PUSHJ P,CHMOD ; CHECK THE MODE
2592 MOVEM A,(P) ; AND STORE IT
2594 ; NOW SET UP OPEN BLOCK IN SIXBIT
2597 MOVSI E,-4 ; AOBN PNTR
2598 FRESE2: MOVE B,T.CHAN+1(TB)
2599 MOVEI A,@RDTBL(E) ; GET ITEM POINTER
2600 GETYP 0,-1(A) ; GET ITS TYPE
2603 MOVE B,(A) ; GET STRING
2606 FRESE3: AOBJN E,FRESE2
2612 PUSHJ P,STRTO6 ; RESULT ON STACK
2616 PUSH P,[0] ; PUSH UP SOME DUMMIES
2619 PUSHJ P,OPNCH ; ATTEMPT TO DO THEOPEN
2622 JRST FINIS ; LEAVE IF FALSE OR WHATEVER
2626 SETZM CHRPOS(B) ;INITIALIZE THESE PARAMETERS
2638 DOTCAL RSSIZE,[CHANNO(B),[2000,,C],[2000,,D]]
2652 ; INTERFACE TO REOPEN CLOSED CHANNELS
2654 OPNCHN: PUSH TP,$TCHAN
2659 REATTY: PUSHJ P,TTYOP2
2660 IFE ITS, SKIPN DEMFLG ; SKIP IF DEMONFLAG IS ON
2666 ; FUNCTION TO LIST ALL CHANNELS
2668 MFUNCTION CHANLIST,SUBR
2672 MOVEI A,N.CHNS-1 ;MAX # OF REAL CHANNELS
2674 MOVEI B,CHNL1 ;POINT TO FIRST REAL CHANNEL
2676 CHNLP: SKIPN 1(B) ;OPEN?
2677 JRST NXTCHN ;NO, SKIP
2678 HRRE E,(B) ; ABOUT TO FLUSH?
2679 JUMPL E,NXTCHN ; YES, FORGET IT
2680 MOVE D,1(B) ; GET CHANNEL
2681 HRRZ E,CHANNO-1(D) ; GET REF COUNT
2684 ADDI C,1 ;COUNT WINNERS
2685 SOJGE E,.-3 ; COUNT THEM
2689 SKIPN B,CHNL0+1 ;NOW HACK LIST OF PSUEDO CHANNELS
2697 MAKLST: ACALL C,LIST
2700 \f; ROUTINE TO RESTORE A CLOSED CHANNEL TO ITS PREVIOUS STATE
2703 REOPN: PUSH TP,$TCHAN
2705 SKIPN CHANNO(B) ; ONLY REAL CHANNELS
2709 MOVSI E,-4 ; SET UP POINTER FOR NAMES
2711 GETOPB: MOVE B,(TP) ; GET CHANNEL
2712 MOVEI A,@RDTBL(E) ; GET POINTER
2713 MOVE B,(A) ; NOW STRING
2715 PUSHJ P,STRTO6 ; LEAVES SIXBIT ON STACK
2721 PUSHJ P,STRTO6 ; GET DEV NAME IN SIXBIT
2723 MOVE B,(TP) ; RESTORE CHANNEL
2726 PUSHJ P,CHMOD ; CHECK FOR A VALID MODE
2728 IFN ITS, MOVE E,-3(P) ; GET DEVICE IN PROPER PLACE
2729 IFE ITS, HLRZS E,(P)
2730 MOVE B,(TP) ; RESTORE CHANNEL
2731 IFN ITS, CAMN E,[SIXBIT /DSK /]
2733 CAIE E,(SIXBIT /PS /)
2734 CAIN E,(SIXBIT /DSK/)
2735 JRST DISKH ; DISK WINS IMMEIDATELY
2736 CAIE E,(SIXBIT /SS /)
2737 CAIN E,(SIXBIT /SRC/)
2738 JRST DISKH ; DISK WINS IMMEIDATELY
2740 IFN ITS, CAMN E,[SIXBIT /TTY /] ; NO NEED TO RE-OPEN THE TTY
2741 IFE ITS, CAIN E,(SIXBIT /TTY/)
2744 AND E,[777700,,0] ; COULD BE "UTn"
2745 MOVE D,CHANNO(B) ; GET CHANNEL
2747 ADDI D,CHNL0 ; DON'T SEEM TO BE OPEN
2750 CAMN E,[SIXBIT /UT /]
2751 JRST REOPD ; CURRENTLY, CANT RESTORE UTAPE CHANNLES
2752 CAMN E,[SIXBIT /AI /]
2753 JRST REOPD ; CURRENTLY CANT RESTORE AI CHANNELS
2754 CAMN E,[SIXBIT /ML /]
2755 JRST REOPD ; CURRENTLY CANT RESTORE ML CHANNELS
2756 CAMN E,[SIXBIT /DM /]
2757 JRST REOPD ; CURRENTLY CANT RESTORE DM CHANNELS
2759 PUSH TP,$TCHAN ; TRY TO RESET IT
2771 REOPD0: SUB TP,[2,,2]
2775 DISKH: MOVE C,(P) ; SNAME
2779 DISKH: MOVEM A,(P) ; SAVE MODE WORD
2780 PUSHJ P,STSTK ; STRING TO STACK
2781 MOVE A,(E) ; RESTORE MODE WORD
2783 PUSH TP,E ; SAVE PDL BASE
2784 MOVE B,-2(TP) ; CHANNEL BACK TO B
2786 MOVE C,ACCESS(B) ; GET CHANNELS ACCESS
2787 TRNN A,2 ; SKIP IF NOT ASCII CHANNEL
2789 HRRZ D,ACCESS-1(B) ; IF PARTIAL WORD OUT
2790 IMULI C,5 ; TO CHAR ACCESS
2791 JUMPE D,DISKH1 ; NO SWEAT
2794 DISKH1: HRRZ D,BUFSTR-1(B) ; ANY CHARS IN MUDDLE BUFFER
2796 TRNN A,1 ; SKIP IF OUTPUT CHANNEL
2801 PUSHJ P,BYTDOP ; FIND LENGTH OF WHOLE BUFFER
2802 HLRZ D,(A) ; LENGTH + 2 TO D
2804 IMULI D,5 ; TO CHARS
2808 DISKH2: SUBI C,(D) ; UPDATE CHAR ACCESS
2809 IDIVI C,5 ; BACK TO WORD ACCESS
2810 IORI A,6 ; BLOCK IMAGE
2813 IORI A,100000 ; WRITE OVER BIT
2816 MOVE A,C ; ACCESS TO A
2817 PUSHJ P,GETFLN ; CHECK LENGTH
2818 CAIGE 0,(A) ; CHECK BOUNDS
2820 PUSHJ P,DOACCS ; AND ACESS
2821 JRST REOPD1 ; SUCCESS
2823 MOVE A,CHANNO(B) ; CLOSE THE G.D. CHANNEL
2829 DOTCAL ACCESS,[A,(P)]
2840 MOVEM 0,BSTO(PVP) ; IN CASE OF INTERRUPT
2851 GETFLN: MOVE 0,CHANNO(B) ; GET CHANNEL
2852 .CALL FILBLK ; READ LNTH
2859 402000,,0 ; STUFF RESULT IN 0
2865 SETZM 1(A) ; MAY GET A DIFFERENT JFN
2866 HRROI B,1(E) ; TENEX STRING POINTER
2867 MOVSI A,400001 ; MAKE SURE
2869 JRST RGTJL ; COMPLAIN
2870 HRRZM B,CHANNO(D) ; COULD HAVE CHANGED
2871 MOVE P,(TP) ; RESTORE P
2873 ASH A,1 ; MUNG ITS SLOT
2876 HLLOS (A) ; MARK CHANNEL NOT TO BE RELOOKED AT
2877 MOVE A,(P) ; MODE WORD BACK
2878 MOVE B,[440000,,200000] ; FLAG BITS
2879 TRNE A,1 ; SKIP FOR INPUT
2880 TRC B,300000 ; CHANGE TO WRITE
2881 MOVE A,CHANNO(D) ; GET JFN
2884 MOVE E,C ; LENGTH TO E
2885 SIZEF ; GET CURRENT LENGTH
2887 CAMGE B,E ; STILL A WINNER
2889 MOVE A,-2(TP) ; CHANNEL
2890 MOVE A,CHANNO(A) ; JFN
2894 SUB TP,[2,,2] ; FLUSH PDL POINTER
2897 ROPFLS: MOVE A,-2(TP)
2899 CLOSF ; ATTEMPT TO CLOSE
2900 JFCL ; IGNORE FAILURE
2915 PSUEDO: AOS (P) ; ASSUME SUCCESS FOR NOW
2916 MOVEI B,RDEVIC-1(B) ; SEE WHAT DEVICE IS
2919 JRST REOPD0 ; NO, RETURN HAPPY
2920 IFN 0,[ CAME B,[ASCII /E&S/] ; DISPLAY ?
2921 CAMN B,[ASCII /DIS/]
2922 SKIPA B,(TP) ; YES, REGOBBLE CHANNEL AND CONTINUE
2923 JRST REOPD0 ; NO, RETURN HAPPY
2925 SOS (P) ; DISPLAY DID NOT REOPEN, UNDO ASSUMPTION OF SUCCESS
2928 \f;THIS PROGRAM CLOSES THE SPECIFIED CHANNEL
2930 MFUNCTION FCLOSE,SUBR,[CLOSE]
2932 ENTRY 1 ;ONLY ONE ARG
2933 GETYP A,(AB) ;CHECK ARGS
2934 CAIE A,TCHAN ;IS IT A CHANNEL
2936 MOVE B,1(AB) ;PICK UP THE CHANNEL
2937 HRRZ A,CHANNO-1(B) ; GET REF COUNT
2938 SOJGE A,CFIN5 ; NOT READY TO REALLY CLOSE
2939 CAME B,TTICHN+1 ; CHECK FOR TTY
2942 MOVE A,[JRST CHNCLS]
2943 MOVEM A,IOINS(B) ;CLOBBER THE IO INS
2944 MOVE A,RDEVIC-1(B) ;GET THE NAME OF THE DEVICE
2948 IFE ITS, HLRZS A,(P)
2949 MOVE B,1(AB) ; RESTORE CHANNEL
2951 CAME A,[SIXBIT /E&S /]
2952 CAMN A,[SIXBIT /DIS /]
2954 MOVE B,1(AB) ; IN CASE CLOBBERED BY DISCLS
2955 SKIPN A,CHANNO(B) ;ANY REAL CHANNEL?
2956 JRST REMOV ; NO, EITHER CLOSED OR PSEUDO CHANNEL
2958 MOVE A,DIRECT-1(B) ; POINT TO DIRECTION
2960 PUSHJ P,STRTO6 ; CONVERT TO WORD
2962 IFN ITS, LDB E,[360600,,(P)] ; FIRST CHAR OD DEV NAME
2963 IFE ITS, LDB E,[140600,,(P)] ; FIRST CHAR OD DEV NAME
2964 CAIE E,'T ; SKIP IF TTY
2966 CAME A,[SIXBIT /READ/] ; SKIP IF WINNER
2969 MOVE B,1(AB) ; IN ITS CHECK STATUS
2970 LDB A,[600,,STATUS(B)]
2975 PUSH TP,CHQUOTE CHAR
2978 MCALL 2,OFF ; TURN OFF INTERRUPT
2985 TLZ A,400000 ; FOR JFN RELEASE
2986 CLOSF ; CLOSE THE FILE AND RELEASE THE JFN
2991 ADDI A,CHNL0+1 ;POINT TO THIS CHANNELS LSOT
2993 SETZM (A) ;AND CLOBBER IT
2998 MOVSI A,TCHAN ;RETURN THE CHANNEL
3001 CLSTTY: ERRUUO EQUOTE ATTEMPT-TO-CLOSE-TTY-CHANNEL
3004 REMOV: MOVEI D,CHNL0+1 ;ATTEMPT TO REMOVE FROM PSUEDO CHANNEL LIST
3005 REMOV0: SKIPN C,D ;FOUND ON LIST ?
3006 JRST CFIN2 ;NO, JUST IGNORE THIS CLOSED CHANNEL
3007 HRRZ D,(C) ;GET POINTER TO NEXT
3008 CAME B,(D)+1 ;FOUND ?
3010 HRRZ D,(D) ;YES, SPLICE IT OUT
3015 ; CLOSE UP ANY LEFTOVER BUFFERS
3018 ; CAME A,[SIXBIT /PRINTO/]
3019 ; CAMN A,[SIXBIT /PRINTB/]
3021 ; CAME A,[SIXBIT /PRINT/]
3023 MOVE B,1(AB) ; GET CHANNEL
3024 HRRZ A,-2(B) ;GET MODE BITS
3027 GETYP 0,BUFSTR-1(B) ; IS THERE AN OUTPUT BUFFER
3032 IFE ITS, PUSH P,ACCESS-1(B) ; SAVE MODE
3035 HRRZS A,(P) ; RESTORE MODE
3036 HRRZ 0,-2(B) ; GET BITS
3040 MOVE A,CHANNO(B) ; GET JFN
3041 TLO A,400000 ; BIT MEANS DONT RELEASE JFN
3042 CLOSF ; CLOSE THE FILE
3044 MOVE E,B ; SAVE CHANNEL
3048 MOVSI C,700 ; MAKE NEW SIZE 7
3052 MOVE C,ACCESS(E) ; LENGTH IN CHARS
3061 RLJFN ; FLUSH THE GD JFN
3066 CFINX1: HLLZS ACCESS-1(B)
3069 CFIN5: HRRM A,CHANNO-1(B)
3072 \f;SUBR TO DO .ACCESS ON A READ CHANNEL
3073 ;FORM: <ACCESS CHANNEL FIX-NUMBER>
3074 ;POSITIONS CHANNEL AT CHARACTER POSN FIX-NUMBER
3077 MFUNCTION MACCESS,SUBR,[ACCESS]
3078 ENTRY 2 ;ARGS: CHANNEL AND FIX-NUMBER
3080 ;CHECK ARGUMENT TYPES
3082 CAIE A,TCHAN ;FIRST ARG SHOULD BE CHANNEL
3084 GETYP A,2(AB) ;TYPE OF SECOND
3085 CAIE A,TFIX ;SHOULD BE FIX
3088 ;CHECK DIRECTION OF CHANNEL
3089 MOVE B,1(AB) ;B GETS PNTR TO CHANNEL
3090 ; MOVEI B,DIRECT-1(B) ;GET DIRECTION OF CHANNEL
3091 ; PUSHJ P,CHRWRD ;GRAB THE CHAR STRNG
3093 ; CAME B,[<ASCII /PRINT/>+1]
3094 HRRZ A,-2(B) ; GET MODE BITS
3098 SKIPE C,BUFSTR(B) ;SEE IF WE MUST FLUSH PART BUFFER
3102 ; CAMN B,[ASCIZ /READ/]
3104 ; CAME B,[ASCIZ /READB/] ; READB CHANNEL?
3106 ; AOS (P) ; SET INDICATOR FOR BINARY MODE
3108 ;CHECK THAT THE CHANNEL IS OPEN
3109 MACC: MOVE B,1(AB) ;GET BACK PTR TO CHANNEL
3112 JRST CHNCLS ;IF CHNL CLOSED => ERROR
3116 ;COMPUTE ACCESS PNTR TO ACCESS WORD CHAR IS IN
3117 ;REMAINDER IS NUMBER OF TIMES TO INCR BYTE POINTER
3118 ADEVOK: SKIPGE C,3(AB) ;GET CHAR POSN
3119 ERRUUO EQUOTE NEGATIVE-ARGUMENT
3126 MOVE A,CHANNO(B) ;A GETS REAL CHANNEL NUMBER
3129 .LOSE %LSFIL ;PRESUMABLY LOSSAGE MATTERS
3134 SFPTR ; DO IT IN TENEX
3136 MOVE B,1(AB) ; RESTORE CHANNEL
3138 ; POP P,E ; CHECK FOR READB MODE
3140 JRST ACCOUT ; PRINT TYPE CHANNEL, GO DO IT
3141 SKIPE BUFSTR(B) ; IS THERE A READ BUFFER TO FLUSH
3143 SETZM LSTCH(B) ; CLEAR OUT POSSIBLE EOF INDICATOR
3146 ;NOW FORCE GETCHR TO DO A .IOT FIRST THING
3147 MOVEI C,BUFSTR-1(B) ; FIND END OF STRING
3149 SUBI A,2 ; LAST REAL WORD
3152 HLLZS BUFSTR-1(B) ; CLOBBER CHAR COUNT
3153 SETZM LSTCH(B) ;CLOBBER READ'S HIDDEN CHARACTER
3155 ;NOW DO THE APPROPRIATE NUM OF BYTE ADVANCEMENTS
3158 ADVPTR: PUSHJ P,GETCHR
3159 MOVE B,1(AB) ;RESTORE IN CASE CLOBBERED
3162 DONADV: MOVE C,3(AB) ;FIXUP ACCESS SLOT IN CHNL
3165 MOVE A,$TCHAN ;TYPE OF RESULT = "CHANNEL"
3166 JRST FINIS ;DONE...B CONTAINS CHANNEL
3169 ACCFAI: ERRUUO EQUOTE ACCESS-FAILURE
3172 IFE ITS, JRST DONADV
3173 TRNE E,C.BIN ; FINISHED FOR BINARY CHANNELS
3176 JUMPE D,DONADV ; THIS CASE OK
3178 IFN ITS, ERRUUO EQUOTE CANT-ACCESS-ASCII-ON-ITS
3181 ;WRONG TYPE OF DEVICE ERROR
3182 WRDEV: ERRUUO EQUOTE NON-DSK-DEVICE
3184 ; BINARY READ AND PRINT ROUTINES
3186 MFUNCTION PRINTB,SUBR
3190 PBFL: PUSH P,. ; PUSH NON-ZERONESS
3193 MFUNCTION READB,SUBR
3203 BINI1: GETYP 0,(AB) ; SHOULD BE UVEC OR STORE
3207 JRST WTYP1 ; ELSE LOSE
3208 BINI2: MOVE B,1(AB) ; GET IT
3210 SUBI B,(C) ; POINT TO DOPE
3212 PUSHJ P,SAT" ; GET ITS ST.ALOC.TYPE
3216 CAIE 0,TCHAN ; BETTER BE A CHANNEL
3218 MOVE B,3(AB) ; GET IT
3219 ; MOVEI B,DIRECT-1(B) ; GET DIRECTION OF
3220 ; PUSHJ P,CHRWRD ; INTO 1 WORD
3223 ; CAMN B,[ASCII /READB/]
3225 ; CAMN B,[<ASCII /PRINT/>+1]
3226 HRRZ A,-2(B) ; MODE BITS
3227 TRNN A,C.BIN ; IF NOT BINARY
3232 ; JUMPL E,WRONGD ; LOSER
3233 CAME E,(P) ; CHECK WINNGE
3235 MOVE B,3(AB) ; GET CHANNEL BACK
3236 SKIPN A,IOINS(B) ; OPEN?
3237 PUSHJ P,OPENIT ; LOSE
3238 CAMN A,[JRST CHNCLS]
3239 JRST CHNCLS ; LOSE, CLOSED
3240 JUMPN E,BUFOU1 ; JUMP FOR OUTPUT
3241 CAML AB,[-5,,] ; SKIP IF EOF GIVEN
3247 BINI5: SKIPE LSTCH(B) ; INDICATES IF EOF HIT
3249 MOVE A,1(AB) ; GET VECTOR
3250 PUSHJ P,PGBIOI ; READ IT
3251 HLRE C,A ; GET COUNT DONE
3252 HLRE D,1(AB) ; AND FULL COUNT
3253 SUB C,D ; C=> TOTAL READ
3255 JUMPGE A,BINIOK ; NOT EOF YET
3258 MOVSI A,TFIX ; RETURN AMOUNT ACTUALLY READ
3261 BUFOU1: SKIPE BUFSTR(B) ; ANY BUFFERS AROUND?
3262 PUSHJ P,BFCLS1 ; GET RID OF SAME
3268 MOVE A,(AB) ; RET VECTOR ETC.
3273 BINEOF: PUSH TP,EOFCND-1(B)
3277 MCALL 1,FCLOSE ; CLOSE THE LOSER
3282 PUSHJ P,OPNCHN ;TRY TO OPEN THE LOSER
3283 JUMPE B,CHNCLS ;FAIL
3286 \f; THESE SUBROUTINES BY NDR 9/16/73 TO FACILITATE THE
3287 ; TYPES OF IO NECESSARY TO MAKE MORE EFFICIENT USE OF
3288 ; THE NETWORK AND DO RELATED FILE TRANSFER TYPE OF JOBS.
3290 R1CHAR: SKIPN A,LSTCH(B) ; CHAR READING ROUTINE FOR FCOPY
3292 TLO A,200000 ; ^@ BUG
3295 JUMPL A,.+2 ; IN CASE OF -1 ON STY
3296 TRZN A,400000 ; EXCL HACKER
3298 MOVEM A,LSTCH(B) ; SAVE DE-EXCLED CHAR
3304 CAIE C,5 ; IF DIRECTION IS 5 LONG THEN READB
3308 AOS ACCESS(B) ; EVERY FIFTY INCREMENT
3312 R1CH1: AOS ACCESS(B)
3316 W1CHAR: CAIE A,15 ; CHAR WRITING ROUTINE, TEST FOR CR
3320 CAIE A,12 ; TEST FOR LF
3321 AOS CHRPOS(B) ; IF NOT LF AOS CHARACTE5R POSITION
3322 CAIE A,14 ; TEST FOR FORM FEED
3324 SETZM CHRPOS(B) ; IF FORM FEED ZERO CHARACTER POSITION
3325 SETZM LINPOS(B) ; AND LINE POSITION
3326 CAIE A,11 ; IS THIS A TAB?
3331 IMULI C,8. ; FIX UP CHAR POS FOR TAB
3332 MOVEM C,CHRPOS(B) ; AND SAVE
3334 HRRZ C,-2(B) ; GET BITS
3335 TRNN C,C.BIN ; SIX LONG MUST BE PRINTB
3343 W1CH1: AOS ACCESS(B)
3350 R1C: SUBM M,(P) ;LITTLE ENTRY FOR COMPILED STUFF
3351 ; PUSH TP,$TCHAN ;SAVE THE CHANNEL TO BLESS IT
3353 ; MOVEI B,DIRECT-1(B)
3356 ; CAME B,[ASCIZ /READ/]
3357 ; CAMN B,[ASCII /READB/]
3360 HRRZ A,-2(B) ; GET MODE BITS
3363 SKIPN IOINS(B) ; IS THE CHANNEL OPEN
3364 PUSHJ P,OPENIT ; NO, GO DO IT
3365 PUSHJ P,GRB ; MAKE SURE WE HAVE A READ BUFFER
3366 PUSHJ P,R1CHAR ; AND GET HIM A CHARACTER
3367 JRST MPOPJ ; THATS ALL FOLKS
3376 PUSH P,A ; ASSEMBLER ENTRY TO OUTPUT 1 CHAR
3377 ; MOVEI B,DIRECT-1(B)
3378 ; PUSHJ P,CHRWRD ; INTERNAL CALL TO W1CHAR
3380 ; CAME B,[ASCII /PRINT/]
3381 ; CAMN B,[<ASCII /PRINT/>+1]
3389 SKIPN IOINS(B) ; MAKE SURE THAT IT IS OPEN
3392 POP P,A ; GET THE CHAR TO DO
3395 ; ROUTINES TO REPLACE XCT IOINS(B) FOR INPUT AND OUTPUT
3396 ; THEY DO THE XCT THEN CHECK OUT POSSIBLE SCRIPTAGE--BLECH.
3400 RXCT: XCT IOINS(B) ; READ IT
3404 DOSCPT: PUSH TP,$TCHAN
3406 PUSH P,A ; AND SAVE THE CHAR AROUND
3408 SKIPN SCRPTO(B) ; IF ZERO FORGET IT
3409 JRST SCPTDN ; THATS ALL THERE IS TO IT
3410 PUSH P,C ; SAVE AN ACCUMULATOR FOR CLEANLINESS
3411 GETYP C,SCRPTO-1(B) ; IS IT A LIST
3415 PUSH TP,[0] ; SAVE A SLOT FOR THE LIST
3416 MOVE C,SCRPTO(B) ; GET THE LIST OF SCRIPT CHANNELS
3417 SCPT1: GETYP B,(C) ; GET THE TYPE OF THIS SCRIPT CHAN
3419 JRST BADCHN ; IF IT ISN'T A CHANNEL, COMPLAIN
3420 HRRZ B,(C) ; GET THE REST OF THE LIST IN B
3421 MOVEM B,(TP) ; AND STORE ON STACK
3422 MOVE B,1(C) ; GET THE CHANNEL IN B
3423 MOVE A,-1(P) ; AND THE CHARACTER IN A
3424 PUSHJ P,W1CI ; GO TO INTERNAL W1C, IT BLESSES GOODIES
3425 SKIPE C,(TP) ; GET THE REST OF LIST OF CHANS
3426 JRST SCPT1 ; AND CYCLE THROUGH
3427 SUB TP,[2,,2] ; CLEAN OFF THE LIST OF CHANS
3428 POP P,C ; AND RESTORE ACCUMULATOR C
3429 SCPTDN: POP P,A ; RESTORE THE CHARACTER
3430 POP TP,B ; AND THE ORIGINAL CHANNEL
3432 POPJ P, ; AND THATS ALL
3435 ; SUBROUTINE TO COPY FROM INCHAN TO OUTCHAN UNTIL EOF HIT
3436 ; ON THE INPUT CHANNEL
3437 ; CALL IS <FILECOPY IN OUT> WHERE DEFAULTS ARE INCHAN AND OUTCHAN
3439 MFUNCTION FCOPY,SUBR,[FILECOPY]
3444 JRST WNA ; TAKES FROM 0 TO 2 ARGS
3446 JUMPE 0,.+4 ; NO FIRST ARG?
3448 PUSH TP,1(AB) ; SAVE IN CHAN
3451 MOVE B,IMQUOTE INCHAN
3455 HLRE 0,AB ; CHECK FOR SECOND ARG
3456 CAML 0,[-2] ; WAS THERE MORE THAN ONE ARG?
3458 PUSH TP,2(AB) ; SAVE SECOND ARG
3461 MOVE A,$TATOM ; LOOK UP OUTCHAN AS DEFAULT
3462 MOVE B,IMQUOTE OUTCHAN
3465 PUSH TP,B ; AND SAVE IT
3468 MOVE B,-2(TP) ; INPUT CHANNEL
3469 MOVEI 0,C.READ ; INDICATE INPUT
3470 PUSHJ P,CHKCHN ; CHECK FOR GOOD CHANNEL
3472 MOVE B,(TP) ; GET OUT CHAN
3473 MOVEI 0,C.PRIN ; INDICATE OUT CHAN
3474 PUSHJ P,CHKCHN ; CHECK FOR GOOD OUT CHAN
3476 PUSH P,[0] ; COUNT OF CHARS OUTPUT
3479 PUSHJ P,GRB ; MAKE SURE WE HAVE READ BUFF
3481 PUSHJ P,GWB ; MAKE SURE WE HAVE WRITE BUFF
3485 PUSHJ P,R1CHAR ; GET A CHAR
3486 JUMPL A,FCDON ; IF A NEG NUMBER WE GOT EOF
3487 MOVE B,(TP) ; GET OUT CHAN
3488 PUSHJ P,W1CHAR ; SPIT IT OUT
3489 AOS (P) ; INCREMENT COUNT
3492 FCDON: SUB TP,[2,,2] ; POP OFF OUTCHAN
3493 MCALL 1,FCLOSE ; CLOSE INCHAN
3495 POP P,B ; GET CHAR COUNT TO RETURN
3498 CHKCHN: PUSH P,0 ; CHECK FOR GOOD TASTING CHANNEL
3503 JRST CHKBDC ; GO COMPLAIN IN RIGHT WAY
3504 ; MOVEI B,DIRECT-1(B)
3507 ; MOVE C,(P) ; GET CHAN DIRECT
3508 HRRZ C,-2(B) ; MODE BITS
3513 ; ADDI C,2 ; TEST FOR READB OR PRINTB ALSO
3514 ; CAME B,CHKT(C) ; TEST FOR CORRECT DIRECT
3517 SKIPN IOINS(B) ; MAKE SURE IT IS OPEN
3518 PUSHJ P,OPENIT ; IF ZERO IOINS GO OPEN IT
3520 POP P, ; CLEAN UP STACKS
3532 CAMLE 0,D ; SEE IF THIS WAS HIS ARG OF DEFAULT
3537 \f; FUNCTIONS READSTRING AND PRINTSTRING WORK LIKE READB AND PRINTB,
3538 ; THAT IS THEY READ INTO AND OUT OF STRINGS. IN ADDITION BOTH ACCEPT
3539 ; AN ADDITIONAL ARGUMENT WHICH IS THE NUMBER OF CHARS TO READ OR PRINT, IF
3540 ; IT IS DESIRED FOR THIS TO BE DIFFERENT THAN THE LENGTH OF THE STRING.
3542 ; FORMAT IS <READSTRING .STRING .INCHANNEL .EOFCOND .MAXCHARS>
3543 ; AND BOTH SUBRS RETURN THE NUMBER OF CHARS READ OR WRITTEN
3545 ; FORMAT FOR PRINTSTRING IS <PRINTSTRING .STRING .OUTCHANNEL .MAXCHARS>
3547 ; THESE WERE CODED 9/16/73 BY NEAL D. RYAN
3549 MFUNCTION RSTRNG,SUBR,READSTRING
3552 PUSH P,[0] ; FLAG TO INDICATE READING
3556 JRST WNA ; CHECK THAT IT HAS FROM 1 TO 4 ARGS
3559 MFUNCTION PSTRNG,SUBR,PRINTSTRING
3562 PUSH P,[1] ; FLAG TO INDICATE WRITING
3566 JRST WNA ; CHECK THAT IT HAS FROM 1 TO 3 ARGS
3568 STRIO1: PUSH TP,[0] ; SAVE SLOT ON STACK
3571 CAIE 0,TCHSTR ; MAKE SURE WE GOT STRING
3573 HRRZ 0,(AB) ; CHECK FOR EMPTY STRING
3577 CAML 0,[-2] ; WAS A CHANNEL GIVEN
3580 SKIPN (P) ; SKIP IF PRINT
3582 CAIN 0,TTP ; SEE IF FLATSIZE HACK
3584 TESTIN: CAIE 0,TCHAN
3585 JRST WTYP2 ; SECOND ARG NOT CHANNEL
3588 MOVNI E,1 ; CHECKING FOR GOOD DIRECTION
3589 TRNE B,C.READ ; SKIP IF NOT READ
3591 TRNE B,C.PRIN ; SKIP IF NOT PRINT
3594 JRST WRONGD ; MAKE SURE CHANNEL IS OPEN IN RIGHT MODE
3595 STRIO9: PUSH TP,2(AB)
3596 PUSH TP,3(AB) ; PUSH ON CHANNEL
3598 STRIO2: MOVE B,IMQUOTE INCHAN
3601 MOVE B,IMQUOTE OUTCHAN
3604 SKIPN (P) ; SKIP IF PRINTSTRING
3606 CAIN 0,TTP ; SKIP IF NOT FLATSIZE HACK
3608 TESTI2: CAIE 0,TCHAN
3609 JRST BADCHN ; MAKE SURE WE GOT A GOOD DEFAULT CHANNEL
3612 STRIO3: MOVE B,(TP) ; GET CHANNEL
3614 PUSHJ P,OPENIT ; IF NOT GO OPEN
3616 CAMN E,[JRST CHNCLS]
3617 JRST CHNCLS ; CHECK TO SEE THAT CHANNEL ISNT ALREADY CLOSED
3620 JRST STRIO5 ; NO COUNT TO WORRY ABOUT
3625 CAIN 0,TFIX ; BETTER BE A FIXED NUMBER
3628 HRRZ D,(AB) ; GET ACTUAL STRING LENGTH
3631 SKIPE (P) ; TEST FOR WRITING
3632 JRST .-7 ; IF WRITING WE GOT TROUBLE
3633 PUSH P,D ; ACTUAL STRING LENGTH
3634 MOVEM E,(TB) ; STUFF HIS FUNNY DELIM STRING
3637 CAML D,C ; MAKE SURE THE STRING IS LONG ENOUGH
3639 ERRUUO EQUOTE COUNT-GREATER-THAN-STRING-SIZE
3640 PUSH P,C ; PUSH ON MAX COUNT
3643 STRIO6: HRRZ C,(AB) ; GET CHAR COUNT
3644 PUSH P,C ; AND PUSH IT ON STACK AS NO MAX COUNT GIVEN
3648 MOVE B,(TP) ; GET THE CHANNEL
3650 MOVEM 0,EOFCND-1(B) ; STUFF IN SLOT IN CHAN
3653 PUSH TP,(AB) ; PUSH ON STRING
3655 PUSH P,[0] ; PUSH ON CURRENT COUNT OF CHARS DONE
3656 MOVE 0,-2(P) ; GET READ OR WRITE FLAG
3657 JUMPN 0,OUTLOP ; GO WRITE STUFF
3659 MOVE B,-2(TP) ; GET CHANNEL
3660 PUSHJ P,GRB ; MAKE SURE WE HAVE BUFF
3661 SKIPGE A,LSTCH(B) ; CHECK FOR EOF ALREADY READ PREVIOUSLY
3662 JRST SRDOEF ; GO DOES HIS EOF HACKING
3664 MOVE B,-2(TP) ; GET CHANNEL
3665 MOVE C,-1(P) ; MAX COUNT
3666 CAMG C,(P) ; COMPARE WITH COUNT DONE
3667 JRST STREOF ; WE HAVE FINISHED
3668 PUSHJ P,R1CHAR ; GET A CHAR
3669 JUMPL A,INEOF ; EOF HIT
3671 HRRZ E,(TB) ; DO WE HAVE A STRING TO WORRY US?
3672 SOJL E,INLNT ; GO FINISH STUFFING
3677 INLNT: IDPB A,(TP) ; STUFF IN STRING
3678 SOS -1(TP) ; DECREMENT STRING COUNT
3679 AOS (P) ; INCREMENT CHAR COUNT
3682 INEOF: SKIPE C,LSTCH(B) ; IS THIS AN ! AND IS THERE A CHAR THERE
3684 MOVEM A,LSTCH(B) ; NO SAVE THE CHAR
3690 HRRZ C,DIRECT-1(B) ; GET THE TYPE OF CHAN
3691 CAIN C,5 ; IS IT READB?
3693 SOS ACCESS(B) ; FIX UP ACCESS FOR READ CHANNEL
3694 JRST STREOF ; AND THATS IT
3695 HRRZ C,ACCESS-1(B) ; FOR A READB ITS WORSE
3698 HRRM D,ACCESS-1(B) ; CHANGE A 0 TO A FIVE
3701 SOS ACCESS(B) ; AND SOS THE WORD COUNT MAYBE
3704 SRDOEF: SETZM LSTCH(B) ; IN CASE OF -1, FLUSH IT
3705 AOJE A,INLOP ; SKIP OVER -1 ON PTY'S
3707 SUB P,[3,,3] ; POP JUNK OFF STACKS
3709 PUSH TP,EOFCND(B) ; WHAT WE NEED TO EVAL
3712 MCALL 1,FCLOSE ; CLOSE THE LOOSING CHANNEL
3713 MCALL 1,EVAL ; EVAL HIS EOF JUNK
3716 OUTLOP: MOVE B,-2(TP)
3718 MOVE A,-3(TP) ; GET CHANNEL
3720 MOVE C,-1(P) ; MAX COUNT TO DO
3721 CAMG C,(P) ; HAVE WE DONE ENOUGH
3723 ILDB D,(TP) ; GET THE CHAR
3724 SOS -1(TP) ; SUBTRACT FROM STRING LENGTH
3725 AOS (P) ; INC COUNT OF CHARS DONE
3726 PUSHJ P,CPCH1 ; GO STUFF CHAR
3729 STREOF: MOVE A,$TFIX
3730 POP P,B ; RETURN THE LOOSER A COUNT OF WHAT WAS DONE
3736 GWB: SKIPE BUFSTR(B)
3739 PUSH TP,B ; GET US A WRITE BUFFER ON PRINTB CHAN
3742 MOVSI A,TWORD+.VECT.
3754 MOVE C,[TCHSTR,,BUFLNT*5]
3760 GRB: SKIPE BUFSTR(B)
3763 PUSH TP,B ; GET US A READ BUFFER
3777 MTSTRN: ERRUUO EQUOTE EMPTY-STRING
3779 \f; INPUT UNBUFFERING ROUTINE. THIS DOES THE CHARACTER UNBUFFERING
3780 ; FOR INPUT. THE OPEN ROUTINE SETUPS A PUSHJ P, TO
3781 ; THIS ROUTINE AS THE IOINS FOR A CHANNEL OPEN TO A NON-TTY DEVICE.
3787 ; B/ AOBJN PNTR TO CHANNEL VECTOR
3788 ; RETURNS NEXT CHARACTER IN AC A.
3789 ; ON ENCOUNTERING EITHER ^C OR NUL(^@) IT ASSUMES EOF AND
3790 ; TRANSMITS ONLY ^C ON SUCCESSIVE CALLS
3794 ; FIRST GRAB THE BUFFER
3795 ; GETYP A,BUFSTR-1(B) ; GET TYPE WORD
3796 ; CAIN A,TCHSTR ; SKIPS IF NOT CHSTR (I.E. IF BAD BUFFER)
3797 ; JRST GTGBUF ; IS GOOD BUFFER...SKIP ERROR RETURN
3798 GTGBUF: HRRZ A,BUFSTR-1(B) ; GET LENGTH OF STRING
3799 SOJGE A,GTGCHR ; JUMP IF STILL MORE
3801 ; HERE IF THE BUFFER WAS EXHAUSTED (BYTE PNTR POINTS INTO DOPE WDS)
3802 ; GENERATE AN .IOT POINTER
3803 ;FIRST SAVE C AND D AS I WILL CLOBBER THEM
3807 LDB C,[600,,STATUS(B)] ; GET TYPE
3808 CAIG C,2 ; SKIP IF NOT TTY
3813 JRST GETTTY ; GET A TTY BUFFER
3815 PUSHJ P,PGBUFI ; RE-FILL BUFFER
3817 JUMPGE A,BUFGOO ;SKIPS IF IOT COMPLETED...FIX UP CHANNEL
3818 MOVEI C,1 ; MAKE SURE LAST EOF REALLY ENDS IT
3820 MOVSI C,014000 ; GET A ^C
3821 MOVEM C,(A) ;FAKE AN EOF
3823 ; RESET THE BYTE POINTER IN THE CHANNEL.
3824 ; BUILD ONE USING THE PTR TO BEG OF BUFFER SAVED IN D
3825 BUFGOO: HRLI D,010700 ; GENERATE VIRGIN LH
3828 MOVEM D,BUFSTR(B) ; STASH IN THE BUFFER BYTE PNTR SLOT
3830 BUFROK: POP P,D ;RESTORE D
3834 ; HERE IF THERE ARE CHARS IN BUFFER
3835 GTGCHR: HRRM A,BUFSTR-1(B)
3836 ILDB A,BUFSTR(B) ; GET A CHAR FROM BUFFER
3840 POPJ P, ; AND RETURN
3841 LDB A,[600,,STATUS(B)] ; CHECK FOR TTY
3842 CAILE A,2 ; SKIP IF TTY
3860 HRRZ A,@BUFSTR(B) ; SEE IF RSUBR START BIT IS ON
3870 PGBUFO: SKIPA D,[SOUT]
3871 PGBUFI: MOVE D,[SIN]
3873 SKIPGE A,BUFSTR(B) ; POINT TO CURRENT BUFFER POSIT
3874 SUBI A,1 ; FOR 440700 AND 010700 START
3876 HRRZ C,-2(B) ; GET BITS
3880 SUBI A,BUFLNT-1 ; CALCULATE PNTR TO BEG OF BUFFER
3881 HRLI A,-BUFLNT ; IOT (AOBJN) PNTR IN A
3884 PGBIOI: MOVE D,A ; COPY FOR LATER
3885 MOVSI C,TUVEC ; PREPARE TO HANDDLE INTS
3893 MOVE C,CHANNO(B) ; CHANNEL NUMBER IN C
3894 ROT C,23. ; MOVE INTO AC FIELD
3895 IOR C,[.IOT 0,A] ; IOR IN SKELETON .IOT
3899 XCT C ; EXECUTE THE .IOT INSTR
3912 MOVEI C,-1(A) ; POINT TO BUFFER
3916 HLRE C,A ; - COUNT TO C
3921 MOVE D,[PUSHJ P,FIXCNT]
3923 MOVE D,A ; XTRA POINTER
3926 XCT (P) ; DO IT TO IT
3935 JUMPGE C,CPOPJ ; NO EOF YET
3936 HRLI A,(C) ; LOOK LIKE AN AOBJN PNTR
3943 IFE ITS, MOVNI C,BUFLNT*5
3944 IFN ITS, MOVEI C,BUFLNT*5
3951 MOVE D,[PUSHJ P,FIXCNT]
3972 CPOPTP: SUB TP,[2,,2]
3984 PGBIOO: SKIPA D,[SOUT]
3985 PGBIOI: MOVE D,[SIN]
3999 ; OUTPUT BUFFERING ROUTINES SIMILAR TO INPUT BUFFERING ROUTINES OF PREV PAGE
4002 GETYP A,BUFSTR-1(B) ; CHECK TYPE OF ARG
4003 CAIE A,TCHSTR ; MUST BE STRING
4006 HRRZ A,BUFSTR-1(B) ; GET CHAR COUNT
4007 JUMPE A,REBUFF ; PREV RESET BUFF, UNDO SAME
4009 PUTCH1: POP P,A ; RESTORE CHAR
4010 CAMN A,[-1] ; SPECIAL HACK?
4011 JRST PUTCH2 ; YES GO HANDLE
4012 IDPB A,BUFSTR(B) ; STUFF IT
4013 PUTCH3: SOS A,BUFSTR-1(B) ; COUNT DOWN STRING
4014 TRNE A,-1 ; SKIP IF FULL
4017 ; HERE TO FLUSH OUT A BUFFER
4021 PUSHJ P,PGBUFO ; SETUP AND DO IOT
4022 HRLI D,010700 ; POINT INTO BUFFER
4024 MOVEM D,BUFSTR(B) ; STORE IT
4025 MOVEI A,BUFLNT*5 ; RESET COUNT
4031 ;HERE TO DA ^C AND TURN ON MAGIC BIT
4034 IDPB A,BUFSTR(B) ; ZAP OUT THE ^C
4036 IORM A,@BUFSTR(B) ; ON GOES THE BIT
4041 REBUFF: MOVEI A,BUFLNT*5 ; 1ST COUNT
4043 HRRZ A,BUFSTR(B) ; NOW POINTER
4046 MOVEM A,BUFSTR(B) ; STORE BACK
4050 ; HERE TO FLUSH FINAL BUFFER
4052 BFCLOS: PUSH TP,$TCHAN
4053 PUSH TP,B ; SAVE CHANNEL
4054 HRRZ A,-2(B) ; GET BITS
4057 PUSHJ P,INSTAT ; GET CURRENT NETWORK STATE
4058 MOVE A,(B) ; GET FIRST ELEMENT OF STATE UVECTOR WHICH IS CUR STATE
4059 POP TP,B ; RESTORE B
4061 CAIE A,5 ; IS NET IN OPEN STATE?
4062 CAIN A,6 ; OR ELSE IS IT IN RFNM WAIT STATE
4063 JRST BFCLNN ; IF SO TO THE IOT
4064 POP P, ; ELSE FLUSH CRUFT AND DONT IOT
4065 POPJ P, ; RETURN DOING NO IOT
4066 BFCLNN: MOVEI C,BUFLNT*5 ; NEW BUFFER FLUSHER BY NDR
4067 HRRZ D,BUFSTR-1(B) ; SO THAT NET ALSO WORKS RIGHT
4068 SUBI C,(D) ; GET NUMBER OF CHARS
4069 IDIVI C,5 ; NUMBER OF FULL WORDS AND REST
4070 PUSH P,D ; SAVE NUMBER OF ODD CHARS
4071 SKIPGE A,BUFSTR(B) ; GET CURRENT BUF POSITION
4072 SUBI A,1 ; FIX FOR 440700 BYTE POINTER
4073 PUSH P,(A) ; SAVE THE ODD WORD OF BUFFER
4078 ADDI D,1(A) ; FIX UP FOR POSSIBLE ODD CHARS
4080 PUSH TP,D ; PUSH THE DOPE VECTOR ONTO THE STACK
4081 JUMPE C,BFCLSR ; IN CASE THERE ARE NO FULL WORDS TO DO
4084 SUBI E,(C) ; FIX UP FOR BACKWARDS BLT
4085 POP A,@E ; AMAZING GRACE
4088 HRRO A,D ; SET UP AOBJN POINTER
4091 PUSHJ P,PGBIOO ; DO THE IOT OF ALL THE FULL WORDS
4092 BFCLSR: HRRO A,(TP) ; GET IOT PTR FOR REST OF JUNK
4093 SUBI A,1 ; POINT TO WORD BEFORE DOPE WORDS
4094 POP P,0 ; GET BACK ODD WORD
4095 POP P,C ; GET BACK ODD CHAR COUNT
4096 JUMPE C,BFCLSD ; IF NO ODD CHARS FINISH UP
4098 IMULI D,(C) ; FIND NO OF BITS TO SHIFT
4099 LSH 0,-43(D) ; SHIFT BITS TO RIGHT PLACE
4100 MOVEM 0,(A) ; STORE IN STRING
4101 SUBI C,5 ; HOW MANY CHAR POSITIONS TO SKIP
4102 MOVNI C,(C) ; MAKE C POSITIVE
4104 TLC A,(C) ; MUNG THE AOBJN POINTER TO KLUDGE
4105 PUSHJ P,PGBIOO ; DO IOT OF ODD CHARS
4106 BFCLSD: HRRZ A,(TP) ; GET PTR TO DOPE WORD
4108 HRLI A,010700 ; AOBJN POINTER TO FIRST OF BUFFER
4112 BFCLSY: MOVE A,CHANNO(B)
4114 BFCLSZ: SUB TP,[2,,2]
4117 BFCDSK: MOVE A,[PUSHJ P,BFFIX]
4178 BFCLS1: HRRZ C,-2(B)
4181 MOVE 0,[AOS ACCESS(B)]
4186 MOVEI A,40 ; PAD WITH SPACES
4188 XCT (P) ; AOS ACCESS IF NECESSARY
4189 SOJG D,.-3 ; TO END OF WORD
4198 ; HERE TO GET A TTY BUFFER
4200 GETTTY: SKIPN C,EXBUFR(B) ; SKIP IF BUFFERS BACKED UP
4202 HRRZ D,(C) ; CDR THE LIST
4203 GETYP A,(C) ; CHECK TYPE
4204 CAIE A,TDEFER ; MUST BE DEFERRED
4206 MOVE C,1(C) ; GET DEFERRED GOODIE
4207 GETYP A,(C) ; BETTER BE CHSTR
4210 MOVE A,(C) ; GET FULL TYPE WORD
4212 MOVEM D,EXBUFR(B) ; STORE CDR'D LIST
4213 MOVEM A,BUFSTR-1(B) ; MAKE CURRENT BUFFER
4218 TTYWAI: PUSHJ P,TTYBLK ; BLOCKED FOR TTY I/O
4219 JRST GETTTY ; SHOULD ONLY RETURN HAPPILY
4221 \f;INTERNAL DEVICE READ ROUTINE.
4223 ;FOR INTERNAL DEVICES THIS ROUTINE APPLIES THE GIVEN OBJECT,
4224 ;CHECKS THAT THE RETURNED VALUE IS OF TYPE CHARACTER,
4225 ;AND RETURNS THAT AS THE NEXT CHARACTER IN THE "FILE"
4229 GTINTC: PUSH TP,$TCHAN ;SAVE THE CHANNEL...WE'LL CLOBBER B
4231 PUSH P,C ;AND SAVE THE OTHER ACS
4242 INTRET: POP P,0 ;RESTORE THE ACS
4246 POP TP,B ;RESTORE THE CHANNEL
4247 SUB TP,[1,,1] ;FLUSH $TCHAN...WE DON'T NEED IT
4251 BADRET: ERRUUO EQUOTE INT-DEVICE-WRONG-TYPE-EVALUATION-RESULT
4253 ;INTERNAL DEVICE PRINT ROUTINE.
4255 ;FOR INTERNAL DEVICES THIS ROUTINE APPLIES THE GIVEN OBJECT,(FUNCTION, SUBR, OR RSUBR)
4256 ;TO THE CURRENT CHARACTER BEING "PRINTED".
4258 PTINTC: PUSH TP,$TCHAN ;SAVE THE CHANNEL...WE'LL CLOBBER B
4260 PUSH P,C ;AND SAVE THE OTHER ACS
4264 PUSH TP,INTFCN-1(B) ;PUSH TYPE OF GIVEN OBJ
4265 PUSH TP,INTFCN(B) ;PUSH THE SUPPLIED FUNCTION (OR SUBR ETC.)
4266 PUSH TP,$TCHRS ;PUSH THE TYPE "CHARACTER"
4267 PUSH TP,A ;PUSH THE CHAR
4268 MCALL 2,APPLY ;APPLY THE FUNCTION TO THE CHAR
4273 ; ROUTINE TO FLUSH OUT A PRINT BUFFER
4275 MFUNCTION BUFOUT,SUBR
4284 ; MOVEI B,DIRECT-1(B)
4285 ; PUSHJ P,CHRWRD ; GET DIR NAME
4287 ; CAMN B,[ASCII /PRINT/]
4289 ; CAME B,[<ASCII /PRINT/>+1]
4291 ; TRNE B,1 ; SKIP IF PRINT
4293 ; TRNN B,1 ; SKIP IF PRINTB
4294 ; PUSH P,[AOS ACCESS(B)]
4298 ; TRNE 0,C.BIN ; SKIP IF PRINT
4300 ; TRNN 0,C.BIN ; SKIP IF PRINTB
4301 ; PUSH P,[AOS ACCESS(B)]
4303 ; GETYP 0,BUFSTR-1(B)
4305 ; SKIPN A,BUFSTR(B) ; BYTE POINTER?
4307 ; HRRZ C,BUFSTR-1(B) ; CHARS LEFT
4308 ; IDIVI C,5 ; MULTIPLE OF 5?
4309 ; JUMPE D,BFIN2 ; YUP NO EXTRAS
4311 ; MOVEI A,40 ; PAD WITH SPACES
4312 ; PUSHJ P,PUTCHR ; OUT IT GOES
4313 ; XCT (P) ; MAYBE BUMP ACCESS
4316 BFIN2: PUSHJ P,BFCLOS ; WRITE OUT BUFFER
4318 BFIN1: MOVSI A,TCHAN
4323 ; FUNCTION TO GET THE FILE LENGTH OF A READ CHANNEL
4325 MFUNCTION FILLNT,SUBR,[FILE-LENGTH]
4337 MOVEI B,DIRECT-1(B) ; GET CHANNEL TYPE
4340 CAME B,[ASCIZ /READ/]
4342 PUSH P,[5] ; MULTIPLICATIVE FACTOR FOR READ
4344 CAME B,[ASCII /READB/]
4346 PUSH P,[1] ; MULTIPLICATIVE FACTOR FOR READ
4348 MOVE C,-2(B) ; GET BITS
4349 MOVEI D,5 ; ASSUME ASCII
4350 TRNE C,C.BIN ; SKIP IF NOT BINARY
4356 JRST FILLOS ; GIVE HIM A NICE FALSE
4362 MOVE B,[1,,11] ; READ WORD CONTAINING BYTE SIZE
4364 LDB D,[300600,,(P)] ; GET BYTE SIZE
4366 MOVEI D,36. ; HANDLE "0" BYTE SIZE
4378 YESASC: MOVE A,$TFIX
4383 IDIV 0,D ; BYTES PER WORD
4391 FILL1: SETZ ; BLOCK FOR .CALL TO FILLEN
4396 FILLOS: MOVE A,CHANNO(C)
4397 MOVE B,[.STATUS A] ;MAKE A CALL TO STATUS TO FIND REASON
4398 LSH A,23. ;SHIFT THE CHANNEL NUMBER INTO RIGHT PLACE
4399 IOR B,A ;FIX UP .STATUS
4414 \f; MCHAN LOW-LEVEL I/O GARBAGE (PDL)-ORIGINAL (LIM)-ADDITIONS
4416 ;CALLING ROUTINE: AC-A contains pointer to block of SIXBIT data
4417 ; DIR ? DEV ? FNM1 ? FNM2 ? SNM
4418 ;RETURNED VALUE : AC-A = <channel #, or -1 if no channel available>
4422 MOVE C,FRSTCH ; skip gc and tty channels
4423 CNLP: DOTCAL STATUS,[C,[2000,,B]]
4426 JUMPE B,CHNFND ; found unused channel ?
4427 ADDI C,1 ; try another channel
4428 CAIG C,17 ; are all the channels used ?
4430 SETO C, ; all channels used so C = -1
4433 HLL B,(A) ; M.DIR slot
4434 DOTCAL OPEN,[B,1(A),2(A),3(A),4(A)]
4436 AOS -2(P) ; successful skip when returning
4442 MIOT: DOTCAL IOT,[A,B]
4446 MCLOSE: DOTCAL CLOSE,[A]
4456 \f;THREE GENERALLY USEFUL ERROR ROUTINES FOR I/O
4459 BADCHN: ERRUUO EQUOTE BAD-CHANNEL
4460 BDCHAN: ERRUUO EQUOTE BAD-INPUT-BUFFER
4462 WRONGD: ERRUUO EQUOTE WRONG-DIRECTION-CHANNEL
4464 CHNCLS: ERRUUO EQUOTE CHANNEL-CLOSED
4466 BAD6: ERRUUO EQUOTE NON-6-BIT-CHARACTER-IN-FILE-NAME
4468 DISLOS: MOVE C,$TCHSTR
4469 MOVE D,CHQUOTE [DISPLAY NOT AVAILABLE]
4474 NOCHAN: ERRUUO EQUOTE ITS-CHANNELS-EXHAUSTED
4476 MODE1: 232020,,202020
4477 MODE2: 232023,,330320