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monitor-sources/device.mac
There are 53 other files named device.mac in the archive. Click here to see a list.
;Edit 2956 by LOMARTIRE on Fri 29-Apr-83, for SPR #19091
; Prevent ILMNRF when searching for dispatch table and FILDEV=0
;<4-1-FIELD-IMAGE.MONITOR>DEVICE.MAC.2, 25-Feb-82 20:16:57, EDIT BY DONAHUE
;UPDATE COPYRIGHT DATE
; UPD ID= 795, FARK:<4-WORKING-SOURCES.MONITOR>DEVICE.MAC.5, 15-Sep-81 11:33:16 by MOSER
;EDIT 1941 - MOVE 1940 TO SIN CODE IN IO SO THAT IT DOESN'T CAUSE PROBLEMS
; WHEN JFN IS A BYTE POINTER.
; UPD ID= 788, FARK:<4-WORKING-SOURCES.MONITOR>DEVICE.MAC.4, 9-Sep-81 15:39:04 by MOSER
;EDIT 1940 - CORRECT FILCNT AT BIOINP WHEN SWITCHING FROM READ TO WRITE SO
; EOF WILL BE SEEN BY READ.
; UPD ID= 271, FARK:<4-WORKING-SOURCES.MONITOR>DEVICE.MAC.3, 27-Oct-80 15:43:59 by DONAHUE
;EDIT 1803 - DELETE EDIT 1793 WHICH CHANGED CODE AT DEVLKE
; UPD ID= 231, FARK:<4-WORKING-SOURCES.MONITOR>DEVICE.MAC.2, 2-Oct-80 11:28:30 by DONAHUE
;<4.MONITOR>DEVICE.MAC.110, 3-Jan-80 08:08:27, EDIT BY R.ACE
;UPDATE COPYRIGHT DATE
;<OSMAN.MON>DEVICE.MAC.1, 10-Sep-79 15:21:02, EDIT BY OSMAN
;TCO 4.2412 - Move definition of BUGHLTs, BUGCHKs, and BUGINFs to BUGS.MAC
;<4.MONITOR>DEVICE.MAC.108, 27-Jul-79 15:00:52, EDIT BY HELLIWELL
;FIX BUG AT DEVLK7 WHICH SCREWED UP DEVICE DESIGNATOR FOR MOUNTABLE DEVICES (DECTAPE)
;<4.MONITOR>DEVICE.MAC.107, 26-Apr-79 10:51:57, Edit by KONEN
;<4.MONITOR>DEVICE.MAC.106, 22-Apr-79 21:29:01, Edit by KONEN
;CHANGE INITING JOB IN SDB TO INITING FORK
;<4.MONITOR>DEVICE.MAC.105, 4-Mar-79 15:00:49, EDIT BY KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
; OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
;COPYRIGHT (C) 1976,1977,1978,1979,1980,1981,1982 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
SEARCH PROLOG
TTITLE DEVICE
SWAPCD
;SPECIAL AC DEFINITIONS
DEFAC (STS,P1)
DEFAC (JFN,P2)
DEFAC (DEV,P4) ;DEVICE PTR
DEFAC (F1,P5)
; Initialize device tables
;CALLED AT SYSTEM STARTUP TO INITIALIZE DEVNAM,ETC.
;ACCEPTS: NONE
;RETURNS +1: ALWAYS
; CALL DEVINI
;USE OF REGISTERS
;C/ POINTER TO DEVXXX TABLES, INCREMENTED ONCE FOR EACH UNIT
;D/ POINTER TO INIDVT, INCREMENTED ONCE PER DEVICE TYPE
DEVINI::SE1CAL
SETOM DEVLCK
SETOM STRLOK ;INITIALIZE STRUCTURE DISMOUNTING LOCK
MOVSI C,-NDEV
MOVSI D,-NINIDV
INIDVL: HRRZ A,INIDVT+3(D) ;GET NUMBER OF UNITS FOR THIS DEVICE
ANDI A,DV%UNT ;MASK OFF UNIT BITS
PUSH P,A ;SAVE COUNT OF UNITS
;HERE ON NEXT UNIT FOR A MULTI-UNIT DEVICE
INIDV0: MOVE A,INIDVT+1(D) ;GET NUMBER OF DEVICES AND DISPATCH
MOVEM A,DEVDSP(C) ;SET UP DISPATCH TABLE
MOVE A,INIDVT+2(D) ;GET MODES AND CHAR1
MOVEM A,DEVCHR(C) ;SET UP DEVCHR WORD FOR THIS DEVICE
HLLZ A,INIDVT+3(D) ;GET CHAR2 BITS
MOVEM A,DEVCH1(C) ;STORE IN SECOND CHARACTERISTICS TABLE
MOVE A,INIDVT(D) ;GET DEVICE NAME
MOVEM A,DEVNAM(C) ;STORE SIXBIT NAME (WITHOUT UNIT #)
SKIPG 0(P) ;THIS A MULTIPLE UNIT DEVICE?
JRST INIDV2 ;NO, SET UNIT # TO -1
;DEVICE HAS UNITS
SOS B,0(P) ;GET UNIT # OF THIS DEVICE
HRRZ A,INIDVT+3(D) ;GET TOTAL # OF UNITS
SUBI A,1(B) ;GET UNIT # TO PUT IN TABLE
HRRZ B,C ;GET INDEX INTO DEVXXX TABLES
CAIL B,DVXST0 ;ARE WE WITHIN THE 'STR' DEFINITIONS?
CAIL B,DVXSTN
JRST INIDV6 ;NO.
MOVX B,D1%NIU ;YES. INDICATE SLOT NOT IN USE BECAUSE
IORM B,DEVCH1(C) ; NOT YET ASSIGNED TO A STRUCTURE
HRRZM A,DEVUNT(C) ;SET OWNING JOB TO 0 SO EXEC WON'T THINK
; IT IS AVAILABLE, ALSO SET UNIT NUMBER
JRST INIDV7 ;DON'T MESS AROUND WITH DEVUNT
INIDV6: HRROM A,DEVUNT(C) ;MARK THAT DEVICE IS FREE ALSO
MOVE B,DEVCH1(C) ;SEE IF THIS IS A SPOOLED DEVICE
TLNE B,(D1%SPL) ;...
SETOM DEVUNT(C) ;YES, NO UNIT NUMBER FOR SPOOLED DEV'S
INIDV7: CALL NUMSIX ;CONVERT UNIT # TO SIXBIT
MOVSI B,770000 ;NOW SET UP TO BUILD DEVICE NAME
INIDV1: LSH B,-6 ;SHIFT MASK TO NEXT SIXBIT CHAR POSITION
LSH A,-6 ;SHIFT SIXBIT UNIT NUMBER ALSO
TDNE B,INIDVT(D) ;SEE IF AT FIRST BLANK CHAR YET
JRST INIDV1 ;NO, LOOP BACK TIL BLANK CHAR FOUND
IORM A,DEVNAM(C) ;CREATE FULL DEVICE NAME PLUS UNIT #
AOBJN C,.+1 ;STEP TO NEXT DEVICE ENTRY IN TABLES
SKIPLE 0(P) ;ANY MORE UNITS FOR THIS DEVICE?
JRST INIDV0 ;YES, LOOP BACK AND SET UP TABLES
JRST INIDV3 ;NO, GO ON TO NEXT DEVICE TYPE
;DEVICE HAS NO UNITS
INIDV2: SETOM DEVUNT(C) ;MARK THAT THIS IS A NO UNIT DEVICE
AOBJN C,INIDV3 ;AND GO TO NEXT DEVICE
;HERE WHEN DONE WITH A PARTICULAR DEVICE (ALL UNITS DONE)
INIDV3: ADD D,BHC+DVTSTP ;STEP TO NEXT DEVICE IN INIDVT TABLE
POP P,0(P) ;CLEAR OUT STACK
JUMPL D,INIDVL ;LOOP BACK FOR ALL DEVICES
;ADD DEVICES ARE DONE. CLEAR UNUSED ENTRIES IF THERE ARE ANY
JUMPGE C,INIDV5 ;ANY MORE ENTRIES IN TABLE?
INIDV4: SETZM DEVNAM(C) ;YES, ZERO ALL UNUSED ENTRIES
SETZM DEVCHR(C)
SETZM DEVCH1(C)
SETZM DEVUNT(C)
SETZM DEVDSP(C)
AOBJN C,INIDV4 ;LOOP BACK TILL ALL ENTRIES CLEARED
INIDV5: MOVE A,JOBNO
MOVE B,CTRLTT
CALL TTYASN ;ASSIGN CTRLTT NOW THAT DEV TABLES EXIST
BUG(TTNAC8)
RET
; Device lookup
;ACCEPTS:
; A/ADDRESS OF STRING BLOCK CONTAINING DEVICE NAME IN ASCIZ,
; STARTING AT C(A)+1
;RETURNS +1: DEVICE NAME NOT FOUND IN DEVNAM
; A/ERROR CODE
; +2: DEVICE FOUND
; A/FIRST WORD OF DEVICE CHARACTERISTICS
; B/OFFSET IN DEVXXX TABLES FOR THIS DEVICE
; C/ UNIQUE CODE IF STRUCTURE
;LOOKS IN DEVNAM FOR NAME MATCHING THAT POINTED TO BY AC1
;SUCCESS INDICATES ONLY THAT DEVICE EXISTS. NOTE THAT FOR
;STRUCTURES, UNUSED SLOTS HAVE ENTRIES IN DEVNAM OF THE FORM STRN AND
;BIT D1%NIU SET IN DEVCH1
DEVLUX:: SE1CAL
HRRZ B,A ;ONLY ADDRESS FOR EXADR
MOVE B,1(B) ;GET FIRST WORD OF STRING
TLNN B,774000 ;SEE IF FIRST CHARACTER IS NULL
JRST DEVLK5 ; Null name not ok
ANDCMI B,377 ;CLEAR 5TH BYTE TO LOOK FOR EXACTLY
CAMN B,[ASCIZ /CTY/] ; 'CTY' (4TH BYTE MUST BE NULL)
JRST [ MOVE A,CTYLNO ;FOUND 'CTY'
JRST DEVLK4]
CAME B,[ASCIZ /TTY/] ;IS IT 'TTY'?
JRST DEVLK0 ;NO.
MOVE B,JOBNO ;YES
HLRZ A,JOBPT(B)
CAIN A,777777
JRST DEVLK5
;FOUND CTY
DEVLK4: ADD A,DEVTT0 ;ADD INDEX OF TTY0
MOVE B,A
JRST DEVLK3
;FOUND NOTHING SPECIAL
DEVLK0: CALL ASCSIX ; Convert to sixbit
JRST DEVLK5 ; Non-sixbit or too many
MOVSI B,-NDEV
;SEARCH FOR MATCHING DEVNAM
DEVLK1: CAME A,DEVNAM(B) ;IS THIS THE DEVICE?
DEVLK2: AOBJN B,DEVLK1 ;NO. KEEP LOOKING
JUMPGE B,DEVLK5 ;DID WE FIND IT?
MOVE A,DEVCH1(B) ;YES. GET 2ND CHARACTERISTICS WORD
TXNE A,D1%NIU ;IS SLOT IN USE?
JRST DEVLK2 ;NO. NO MATCH
HRRZ C,B ;GET INDEX ONLY
CAIL C,DVXST0 ;IS IT A STRUCTURE
CAIL C,DVXSTN
JRST DEVLK3 ;NO - PROCEED
PUSH P,B ;SAVE INDEX
HRRZ A,DEVUNT(B) ;GET STR # (TEMP)
ANDI A,DV%UNT
CAIN A,DV%UNT
MOVEI A,-1 ;SET TO -1
CALL STRCNV ;GET STR UNIQUE CODE (TEMP)
JRST [ POP P,B ;FAILED - NO MATCH
JRST DEVLK2]
MOVE C,A ;RETURN IN C
POP P,B ;RESTORE B
DEVLK3: MOVE A,DEVCHR(B) ;YES. RETURN CHARACTERISTICS
RETSKP
DEVLK5: MOVEI A,GJFX16 ;RETURN NO SUCH DEVICE
RET
;LOOKUP DEVICE AND CHECK ASSIGNMENT, MOUNT IF NECESSARY
;ACCEPTS:
; A/ADDRESS OF STRING BLOCK CONTAINING DEVICE NAME IN ASCIZ,
; STARTING AT C(A)+1
; CALL DEVLUX
; RETURN +1: IF NOT FOUND, OR NOT MOUNTABLE
; RETURN +2: SUCCESS,
; A/ DEVICE CHARACTERISTICS
; B/ DEV TABLE INDEX
; C/ UNIQUE CODE IF STRUCTURE
; DEV/ UNIT #,,DISPATCH TABLE
DEVLUK::SE1CAL
STKVAR <DVLKIN,DVLKUC>
SETZ DEV, ;INIT DEV IN CASE OF FAILURE
CALL DEVLUX ;LOOKUP NAME
;RETURNS: 1/CHARACTERISTICS, 2/INDEX TO DEVXXX
JRST DEVLKE ;NOT FOUND
MOVE DEV,DEVDSP(B) ;DEV/(UNIT,,DISPATCH ADDRESS)
HRRZ D,DEVUNT(B) ;SET UP UNIT NUMBER IN DEV
ANDI D,DV%UNT
CAIN D,DV%UNT ;CHECK FOR -1
SETO D,0 ;MAKE IT -1
HRL DEV,D
HRRZ D,B ;GET INDEX INTO DEVICE TABLES
CAIL D,DVXST0 ;IS IT A STRUCTURE?
CAIL D,DVXSTN
JRST DEVLK7 ;NO - GO ON
MOVEM B,DVLKIN ;SAVE INDEX
MOVEM C,DVLKUC ;SAVE UNIQUE CODE
MOVE A,C ;GET UNIQUE CODE
CALL CNVSTR ;LOCK STR AND VALIDATE CODE
JRST DEVLK9 ;RETURN NO SUCH DEVICE
MOVE B,DVLKIN ;RESTORE INDEX
MOVX D,D1%INI ;SEE IF BEING INITED
TDNN D,DEVCH1(B) ;...
JRST DEVLK6 ;NO - OK THEN
MOVE D,STRTAB(A) ;GET SDB ADDRESS
LOAD D,STRJB,(D) ;GET FORK INITING STR
CAMN D,FORKX ;THIS FORK?
JRST DEVLK6 ;YES - OK
CALL ULKSTR ;NO - ULKOCK STR
JRST DEVLK9 ;RETURN ERROR
DEVLK6: CALL ULKSTR ;UNLOCK STRUCTURE
MOVE C,DVLKUC ;RESTOR UNIQUE CODE
MOVE A,DEVCHR(B) ;RETURN DEVICE CHARACTERISTICS
RETSKP
DEVLK7: CALL DEVAV ;IS DEVICE AVAILABLE?
RETSKP ;NO SO DON'T MOUNT
TLNE A,(DV%MDV) ;DEVICE MOUNTABLE BUT NOT MOUNTED?
TLNE A,(DV%MNT)
RETSKP
TLZ A,777000 ;YES. CONSTRUCT DEV DESIG
TLO A,.DVDES
HRR A,DEVUNT(B)
TRC A,DV%UNT ;TOGGLE UNIT NUMBER
TRCN A,DV%UNT ;TOGGLE BACK, TEST FOR ALL 1'S
TRO A,-1 ;AND MAKE ENTIRE HW 1'S
MOUNT ;MOUNT IT
JRST DEVLKE ;FAILED, RETURN ERROR CODE
MOVE A,DEVCHR(B) ;A/CHARACTERISTICS
RETSKP
DEVLK9: MOVEI A,GJFX16 ;DEVICE NOT KNOWN
;**;[1803] CHANGE 3 LINES AT DEVLKE:+0L PED 27-OCT-80
DEVLKE:TQNE <ASTF> ;OUTPUT STARS ON?
RETSKP ;YES, ALWAYS SUCCEED THEN
RETBAD ;NO, GIVE ERROR RETURN
;CHKDEV AND CHKDES - Check device designator
;ACCEPTS:
; A/ Device designator
; CALL CHKDEV ;THIS CHECKS IF DEVICE IS AVAILABLE
; OR
; CALL CHKDES ;JUST CHECKS IF DESIGNATOR IS LEGAL
;ReturnS +1: Error, number in a
; +2:Ok,
; A/ Unit number
; B/ Index into device tables
; C/ Device characteristics word (DEVCHR)
; DEV/ (UNIT NUMBER,,DISPATCH ADDRESS)
CHKDEV::TRVAR <STRNXX>
SETOM STRNXX ;ASSUME NO STR YET
CALL CHKDSS ;SEE IF DESIGNATOR IS VALID
RETBAD () ;ILLEGAL DESIGNATOR
SE1CAL
MOVX D,D1%INI ;SEE IF DEVICE IS BEING INITIALIZED
TDNN D,DEVCH1(B) ; (CURRENTLY FOR STRUCTURES ONLY)
JRST CHKDV2 ;NO. PROCEED AS USUAL
HRRZ D,DEVUNT(B) ;YES. GET UNIT NUMBER
ANDI D,DV%UNT
CAIN D,DV%UNT ;CHECK FOR -1
SETO D,0 ;MAKE IT -1
MOVE D,STRTAB(D) ;POINT TO START OF SDB FOR THIS STRUCTURE
LOAD D,STRJB,(D) ;GET FORK THAT IS ININIALIZING
CAMN D,FORKX ;IS IT THIS FORK?
JRST CHKDEX ;YES - SUCCESS
JRST CHKDV3 ;NO. TAKE ERROR RETURN
CHKDV2: CALL DEVAV ;DEVICE AVAILABLE?
CAIA ;NO
JRST CHKDEX ;DEVICE IS AVAILABLE
CHKDV3: SKIPL A,STRNXX ;SEE IF STR #
CALL ULKSTR ;UNLOCK IF HAVE ONE
MOVEI A,DEVX2 ;NOT AVAILABLE
RET ;GIVE ERROR RETURN
;CHKDES - CHECK FOR EXISTING DEVICE
;SEARCHES DEVXXX TABLES FOR MATCHING DEVICE TYPE AND UNIT NUMBER.
;NOTE THAT FOR STRUCTURES, UNUSED SLOTS HAVE ENTRIES IN DEVNAM OF THE
;FORM STRN AND BIT D1%NIU SET IN DEVCH1
CHKDES::TRVAR <STRNXX>
SETOM STRNXX ;MARK NONE SEEN YET
CALL CHKDSS ;CHECK DESIGNATOR AND LOCK STR
RETBAD () ;NO SUCH DEVICE
SE1CAL
CHKDEX: SKIPGE STRNXX ;IF .GE. 0 THEN UNLOCK STR
RETSKP ;GOOD RETURN
MOVE T1,STRNXX ;GET STR #
MOVE T1,STRTAB(T1) ;GET SDB PNTR
LOAD T1,STRUC,(T1) ;GET UNIQUE CODE
EXCH T1,STRNXX ;SAVE IT A GET STR # BACK
CALL ULKSTR ;UNLOCK STRUCTURE
MOVE T1,STRNXX ;RETURN UNIQUE CODE
HRL DEV,T1 ;...
RETSKP ;GOOD RETURN
;CHKDSS - INTERNAL ROUTINE TO CHECK DEVICE DESIGNATOR. ASSUMES THAT
;A TRVAR NAMED "STRNXX" EXISTS IN THE CALLING ROUTINE.
;ACCEPTS:
; A/ DEVICE DESIGNATOR
; CALL CHKDSS
;RETURNS +1: INVALID DEVICE DESIGNATOR
; A/ ERROR CODE
; +2: VALID DEVICE DESIGNATOR
; A/ UNIT NUMBER
; B/ INDEX INTO DEVICE TABLES
; C/ DEVICE CHARACTERISTICS (DEVCHR)
; DEV/ (UNIT NUMBER,,DISPATCH ADDRESS)
;VALID DESIGNATORS ARE:
; (0,,-1) -- CONTROLLING TERMINAL
; (0,,.TTDES+N) -- TERMINAL N
; (.DVDES+.DVDSK,,UNIQUE CODE) -- STRUCTURE MOUNTED WITH THIS UNIQUE CODE
; (.DVDES+.DVDSK,,-1) -- CONNECTED STRUCTURE
; (.DVDES+M,,N) -- UNIT N OF DEVICE TYPE M
; (.DVDES+M,,-1) -- DEVICE TYPE M (NON-UNIT DEVICE)
CHKDSS: STKVAR <CHKDVD,CHKDVU,CHKCSZ>
CHKDS1: TLNN A,777777 ; Left half zero means tty designator
JRST TTYDEV
TLZN A,.DVDES ; These bits always on
RETBAD (DEVX1) ;NOT ON - INVALID DESIGNATOR
TLNN A,777777 ;THIS WILL BE ZERO IF A DISK TYPE
;DEVICE TYPE IS .DVDSK. IF RH IS -1, GET CONNECTED STRUCTURE.
;IN EITHER CASE, CONVERT UNIQUE CODE TO STRUCTURE NUMBER, WHICH IS
;THE UNIT NUMBER FOR THE DEVICE TABLES. LEAVE THE STRUCTURE LOCKED
JRST [ CAIN A,-1 ;CHECK SPECIAL
CALL [CALL GTCSCD ;GET CONNECTED DIR #
HLRZS A ;UNIQUE CODE ONLY
RET]
CALL CNVSTR ;GET STR #
RETBAD (DEVX1)
MOVEM A,STRNXX ;SAVE STR # FOR RELEASE
JRST .+1]
;SEARCH THE DEVICE TABLES FOR THE UNIT SPECIFIED BY THE DEVICE DESIGNATOR
;(IF NON-UNIT DEVICE, DEVUNT WILL CONTAIN -1)
MOVSI D,-NINIDV ;NUMBER OF DEVICES
MOVEM A,CHKDVD ;SAVE DEVICE DESCRIPTOR
ANDI A,DV%UNT ;GET UNIT
CAIN A,DV%UNT ;CHECK FOR -1
SETZ A,0 ;SET TO UNIT 0
HRRZM A,CHKDVU ;SAVE UNIT REQUESTED
SETZB B,CHKCSZ ;GET SIZE
CHKDVL: HLLZ A,CHKDVD ;GET DESCRIPTOR
ADD B,CHKCSZ ;POINT TO NEXT UNIT SET
HRRZ C,INIDVT+3(D) ;GET COUNT OF UNITS
ANDI C,DV%UNT ;MASK OFF UNIT BITS
CAIE C,DV%UNT ;CHECK FOR DV%UNT (-1)
SKIPN C ;CHECK FOR 0
MOVEI C,1 ;SET FOR 1 UNIT
MOVEM C,CHKCSZ ;SAVE SIZE
CAMG C,CHKDVU ;GGAL UNIT SIZE?
JRST CHKDV1 ;NOT LEGAL UNIT
HLLZ C,INIDVT+2(D) ;GET DEVICE DESCRIPTOR
TLZ C,777000 ;MASK UNITS
CAME A,C ;MATCH?
CHKDV1: JRST [ ADD D,BHC+DVTSTP-1 ;UPDATE COUNT
AOBJN D,CHKDVL ;TRY NEXT UNIT
JRST CHKDV4] ;NONE FOUND
MOVE C,B ;GET UNIT REQUESTED
ADD C,CHKDVU ;GET CURRENT UNIT
HRR A,DEVUNT(C) ;GET CURRENT UNIT AND FLAGS
HLL A,DEVCHR(C) ;GET CHARACTERISTICS
TLZ A,777000 ;GET RID OF .DV BITS
CAME A,CHKDVD ;CHECK TO SEE IF DEVICE MATCH
JRST CHKDV1 ;NO TRY NEXT ONE
;DEVICE HAS BEEN FOUND. LOAD DEV AND C TO RETURN TO CALLER
MOVE B,C ;GET OFFSET INTO TABLES
MOVE A,DEVCH1(B) ;GET SECOND CHARACTERISTICS WORD
TXNE A,D1%NIU ;IS SLOT IN USE?
JRST CHKDV4 ;NO
HRRZ A,CHKDVU ; Leave unit in a
MOVE DEV,DEVDSP(B) ;GET DISPATCH ADDRESS
HRL DEV,A ;DEV/ (UNIT,,DISPATCH ADDRESS)
MOVE C,DEVCHR(B) ;C/ CHARACTERISTICS
RETSKP
;LEFT HALF IS ZERO. THIS IS EITHER (0,,-1) FOR CONTROLLING TERMINAL
;OR 400000+TERMINAL NUMBER. IF THE LATTER, MAKE UP 600012,,TERMINAL NUMBER AND
;TRY IT AGAIN
TTYDEV: CAIN A,.CTTRM ;WANT CONTROLLING TERMINAL
JRST CTTYDV ;YES - GET IT
TRZN A,.TTDES ;NO. GET TERMINAL NUMBER
RETBAD (DEVX1) ;RETURN INVALID DESIGNATOR
HRLI A,.DVDES+.DVTTY ;GENERATE ordinary device designator
JRST CHKDS1 ; And try again
;GET CONTROLLING TERMINAL AND GO TRY AGAIN
CTTYDV: MOVE B,JOBNO
HRLZI A,JOBPT(B)
HRRI A,DISGET
SKIPGE B,JOBPT(B)
MDISMS
HLRZ A,B ;GET CONTROLLING TERMINAL (MAY BE -1 AGAIN)
TXO A,.TTDES ;MAKE IT A TERMINAL DESIGNATOR
JRST TTYDEV
;DEVICE NOT KNOWN
CHKDV4: SKIPL A,STRNXX ;IF STR FOUND - RELEASE IT
CALL ULKSTR ;UNLOCK STRUCTURE
MOVEI A,DEVX1
RET ; Illegal designator
;FIND INDEX FOR SPECIFIC UNIT
; JFN/ A JFN, SHIFTED TO POINT TO JFN BLOCK
; RETURN +1: A/ INDEX TO DEVICE TABLES
;FILDEV AND INIDVT+3 HAVE (UNIT NUMBER,,DISPATCH ADDRESS)
;IF THERE ARE NO UNITS, FILDEV HAS -1; INIDVT HAS 0
FNDUNT::MOVSI B,-NINIDV ;SETUP TO SCAN INITIAL DEVICE TABLE
FNDU1: HRRZ C,FILDEV(JFN) ;GET DISPATCH TABLE ADDRESS FOR JFN
;**;[2956] Add 2 lines after FNDU1:+0 DML 29-APR-83
SKIPN C ;[2956] IS THE ENTRY IN JFN BLOCK ZERO?
HRRZ C,DEV ;[2956] YES, USE DEV INSTEAD
HRRZ A,INIDVT+1(B) ;GET DISPATCH TABLE ADDRESS FOR DEVICE
CAMN A,C ;SAME AS JFN?
JRST FNDU2 ;YES, HAVE FOUND PROPER DEVICE
FNDU3: ADDI B,DVTSTP-1 ;SKIP TO NEXT DEVICE
AOBJN B,FNDU1
BUG(NOFNDU)
;DISPATCH ADDRESSES MATCH. SEE IF AGREE ON UNIT VS NON-UNIT DEVICE
FNDU2: HLRZ A,FILDEV(JFN) ;GET UNIT NUMBER FOR JFN
HLRZ C,INIDVT+1(B) ;GET OFFSET IN DEVXXX TABLES FOR FIRST UNIT
HRRZ D,INIDVT+3(B) ;GET UNIT NUMBER FOR DEVICE IN TABLE
CAIN A,-1 ;DOES DEVICE IN JFN BLOCK HAVE UNITS?
JRST FNDU4 ;NO.
JUMPE D,FNDU3 ;YES. DOES THIS DEVICE HAVE UNITS?
ADD A,C ;YES. GET OFFSET IN DEVXXX TABLES FOR THIS UNIT
RET
;NOT A UNIT DEVICE
FNDU4: JUMPN D,FNDU3 ;DOES THIS DEVICE HAVE UNITS?
MOVE A,C ;NO. POINT TO ENTRY IN DEVXXX TABLES
RET
; Convert number to sixbit characters
NUMSIX: PUSH P,C
PUSH P,B
PUSH P,D
MOVE C,[POINT 6,D]
MOVEI D,0
ANDI A,777
CALL NUMSI1
MOVE A,D
POP P,D
POP P,B
POP P,C
RET
NUMSI1: IDIVI A,8
HRLM B,(P)
SKIPE A
CALL NUMSI1
HLRZ A,(P)
ADDI A,20
IDPB A,C
RET
;ROUTINE TO MAKE SURE DEVICE IS AVAILABLE TO THE JOB. IT PRESERVES
;A,B,C,D (T1,T2,T3,T4).
;CALL: B ;AS SET UP BY CHKDES
; DEV ;"
; CALL DEVAV ;IS DEVICE AVAILABLE TO THIS JOB ?
;RETURN:
; +1 ;NO.
; +2 ;YES
DEVAV:: SAVET ;PRESERVE TEMPS FOR CALLER
SE1CAL
HLRZ D,DEVUNT(B);GET ASSIGNER'S JOB #
CAMN D,JOBNO ;ASSIGNED BY THIS JOB ?
RETSKP ;YES, SO DEVICE IS AVAILABLE.
CAIE D,-1 ;IS DEVICE UNASSIGNED ?
JRST DEVAV9 ;ASSIGNED TO SOMEONE ELSE, INVESTIGATE PTY POSSIBILITY
MOVEI B,0(DEV) ;GET DEVICE TYPE OF UNASSIGNED DEVICE
CAIN B,PTYDTB ;A PTY?
JRST DEVAV1 ;YES.
CAIN B,TTYDTB ;TTY?
JRST DEVAV2 ;YES, MAYBE A PTY.
CAIN B,MTADTB ;IS THIS A MAGTAPE?
JRST [ HLRZ B,DEV ;YES, SEE IF IT IS REALLY THERE
SKIPN MTCUTB(B) ;IS THERE A DRIVE PHYSICALLY THERE?
RET ;NO
JRST .+1] ;YES
RETSKP ;DEVICE IS O.K.
DEVAV1: HLRZ B,DEV ;GET UNIT # OF PTY
CALL PTYTTY ;CONVERT TO TTY NUMBER
MOVEI A,.TTDES(B) ;GET TERMINAL DESIGNATOR (400000+N)
DEVAV3: PUSH P,DEV ;SAVE ORIGINAL DEVICE
CALL CHKDES ;GET INDEX FOR TABLES
BUG(DEVUCF)
POP P,DEV ;RESTORE ORIGINAL DEVICE
HLRZ A,DEVUNT(B) ;SEE WHO ASSIGNED THE TTY
CAME A,JOBNO ;THIS JOB?
CAIN A,-1 ;OR NOONE?
RETSKP ;YES, SO IT'S AVAILABLE
RET ;DEVICE NOT AVAILABLE
DEVAV2: HLRZ A,DEV ;GET TTY UNIT #
CALL CHKPTY ;IS IT A PTY?
RETSKP ;NO, SO IT'S AVAILABLE
HRLI A,.DVDES+.DVPTY ;MAKE PTY DEVICE DESIGNATOR
JRST DEVAV3 ;GO CHECK FOR PTY AVAILABILITY
DEVAV9: MOVEI A,TTYDTB
CAIE A,(DEV) ;IS THIS DEVICE A TERMINAL?
RET ;NO SO DEVICE IS DEFINITELY NOT AVAILABLE
HLRZ A,DEV ;YES, GET ITS LINE NO
CALL PTCHKA ;SEE IF THIS TTY CONTROLLED BY OUR OWN PTY
JUMPGE A,R ;NO, SO IT'S UNAVAILABLE
RETSKP ;YES SO IT'S AVAILABLE
; Routine to convert ascii to sixbit
; Call: A ; Lookup pointer
; CALL ASCSIX ; For six characters
; Or
; CALL ASC3SX ; For three characters
;RETURNS +1: ERROR, TOO MANY CHARS OR NON-SIXBIT CHAR ENCOUNTERED
; +2: SUCCESS, A/ SIXBIT, B/ MASK
ASCSIX::SKIPA C,[6]
ASC3SX::MOVEI C,3
HRLI A,(<POINT 7,0,35>)
PUSH P,A
SETZB A,B
PUSH P,D
ASCSX1: ILDB D,-1(P)
JUMPE D,ASCSX3 ; Null, done
SOJL C,ASCSXR ; Too many characters, error
SUBI D,40
JUMPL D,ASCSXR ; Not sixbit
CAIL D,100
JRST ASCSXR
ROTC A,6
IOR A,D
IORI B,77
JRST ASCSX1
ASCSX4: ROTC A,6
ASCSX3: TLNN B,770000 ;TEST MASK FOR COMPLETION
JUMPN A,ASCSX4
AOS -2(P)
ASCSXR: POP P,D
POP P,C
RET
;DUMMY ROUTINES FOR BIDIRECTIONAL I/O
BIOINP::TQOE <FILINP> ;ALREADY DOING INPUT?
RET ;YES. ALL DONE THEN
TQZ <FILOUP> ;NO. SO NOT DOING OUTPUT ANYMORE
;**;[1941] REMOVE 4 LINES FROM EDIT 1940 AT BIOINP: + 3L TAM 15-SEP-81
;**;[1940] ADD 4 LINES AT BIOINP: + 3L TAM 9-SEP-81
RET ;AND DONE
;FO OUTPUT NOW
BIOOUT::TQOE <FILOUP> ;NOW DOING OUTPUT?
RET ;YES. DONE
TQZ <FILINP> ;NO. SO NOT DOING OUTPUT ANYMORE
RET ;AND DONE
TNXEND
END