KVC@BUSTER.NRC.COM (Kevin Carosso) (07/31/88)
+-+-+-+ Beginning of part 5 +-+-+-+ X`009JMP`009G^EXE$FINISHIO`009`009; COMPLETE REQUEST IOSB WORD 0,1 X`012 X;`009This routine verifies that the user buffer is accessable X XVERIFY_SENSE:`009`009`009`009; X`009MOVL`009P1(AP),R1`009`009; ADDRESS USER BUFFER X`009IFNOWRT`009#8,(R1),20$`009`009; BR IF NO ACCESS TO QUADWORD BUFFER X`009MOVL`009#8,R0`009`009`009; INIT DEFAULT ARGUMENT SIZE X`009CLRQ`009(R1)`009`009`009; INIT RETURN DATA X`009MOVZWL`009P2(AP),R2`009`009; GET SIZE ARGUMENT X`009CMPL`009R2,#12`009`009`009; ROOM FOR SECOND DEVDEPEND SPECIFIED? X`009BLSSU`00910$`009`009`009; NO X`009IFNOWRT`009#12,(R1),20$`009`009; CHECK IF WRITE ACCESS X`009MOVW`009#12,R0`009`009`009; SAVE ARGUMENT SIZE X`009CLRL`0098(R1)`009`009`009; INIT RETURN FIELD X10$: X`009RSB X20$: X`009MOVZWL`009#SS$_ACCVIO,R0`009`009; SET ERROR STATUS X`009JMP`009G^EXE$ABORTIO`009`009; ABORT THE IO X`012 X`009.SBTTL`009PY$END - End of driver XPY$END: X`009`009`009`009`009; End of driver X`009.END $ GOSUB UNPACK_FILE $ FILE_IS = "TWDRIVER.MAR" $ CHECKSUM_IS = 1332422334 $ COPY SYS$INPUT VMS_SHARE_DUMMY.DUMMY X`009.TITLE`009TWDRIVER - Pseudo terminal driver for Front End and ethernet X`009.IDENT`009'V05-005A' X X;++ X; FACILITY: X; X;`009VAX/VMS TERMINAL DRIVER X; X; ABSTRACT: X; X;`009PSEUDO TERMINAL ROUTINES. X; X; AUTHOR: X; X;`00919-NOV-1982`009Dale Moore (dwm) at CMU X;`009`009Redone for VMS V3.0 X; X;`009This program has been granted to the public domain by the author. X; X; MODIFICATIONS: X; X;`009Version V05-005A Kevin Carosso @ Network Research Co. X;`009`009Make the conditional assembly for VMS V5 automatic X;`009`009driven off existence of SS$_INVLICENSE. X; X;`009V05-004A Kevin Carosso @ Network Research Co. X;`009`009Conditionalize assembly for VMS V4 or V5. There X;`009`009is a magic symbol at the top that is commented X;`009`009out for VMS V5. X; X;`009V05-004`009Digital Equipment Corp.`00924-May-1988 X;`009`009Add code to delivered ASTs if PORT XON, PORT XOFF, or X;`009`009PORT SET_LINE routines are called. X; X;`009V05-003`009Digital Equipment Corp.`00913-May-1988 X;`009`0091) Add hooks to indicate if line is XOFFed. X;`009`0092) Set TTY$M_PC_NOMODEM bit in UCB$W_TT_PRTCTL. X;`009`0093) Set device to HOSTSYNC. X; X;`009V05-002`009Digital Equipment Corp.`00915-Feb-1988 X;`009`009Add TTY$M_PC_MULTISESSION bit to UCB$W_TT_PRTCTL so that X;`009`009this device is not counted as a user in LOGIN. X; X;---------- Previous history --------------------- X; X;`009`009DWM`009- Added .Page above each .sbttl X;`009`009`009- added modem transition routines in disco and init X;`009`009`009- removed $ACBDEF external def's X;`009`009`009- restored timeout to resume X;`009`009`009- added ioc$initiate call in xoff and xon routines. X;`009Version V03-002 - Changed TP startio to clear TIM in UCB$W_STS X;`009Version V03-003 - Changed TW$RESUME to not set timeout bit in sts X; X;`009Version V03-004 (Thu Dec 9 12:43:17 1982) D. Kashtan X;`009`009`009 Made into a TEMPLATE driver. X;`009`009`009 (***WARNING*** -- LOOK AT COMMENTS FOR ROUTINE X;`009`009`009 TW$SET_LINE. THERE IS IMPORTANT INFORMATION X;`009`009`009 ABOUT CHANGES TO VMS THAT WILL AFFECT THE TWDRIVER) X;`009Version V03-005 - (14-Jun-1983 )Dale Moore X;`009`009`009 Add R4 to masks on calls to ioc$initiate. X;`009`009`009 TTY$STARTIO clobber R4. X;`009Version V03-006`009- Change TW$XON and TW$XOFF routines from X;`009`009`009 unconditionally calling IOC$INITIATE. X;`009`009`009 IOC$INITIATE will branch to PY$STARTIO, X;`009`009`009 Which will call TTY$GETNEXTCHAR (UCB$L_TT_GETNEXT), X;`009`009`009 Which will branch to EOLSEEN, X;`009`009`009 which calls TTY$READONE, X;`009`009`009 which calls the PORT_XOFF routine which is TW$XOFF. X;`009`009`009 This cycle was eating up all of the kernel stack. X;`009Version V03-007 - (12-Jul-1983) Mark London X;`009`009`009 Set default of TW to TERM to allow REPLY/USERS. X;`009`009`009 Make TW owned and not a TEMPLATE in order that X;`009`009`009 SHO TERM TWA0 does not cause a crash (SHOW attempts X;`009`009`009 an ASSIGN to the device.) X;`009Verison V04-001 - ( 9-Nov-1984 ) L. Bellamy and D. Davis X;`009`009`009 In order of appearance: X; X;`009`009`009 Added Object Rights Block offset definitions. X;`009`009`009 Add TEMPLATE bit to UCB$W_STS. X;`009`009`009 Add ORB definitions in prologue. X;`009`009`009 Modify to allow vector definitions using VEC macro. X;`009`009`009 Use CLASS_CTRL_INIT and CLASS_UNIT_INIT to locate X;`009`009`009 vector table. X;`009`009`009 Update powerfail routines. X;`009`009`009 Use new methodology for XON/XOFF flow control. X;`009`009`009 Get rid of all the SET_LINE stack manipulation X;`009`009`009 since the terminal driver does not do anything X;`009`009`009 malicious as suggested. X; X;`009`009`009 NOTE - Comments in subroutine preambles not altered X;`009`009`009 to reflect changes in most places. X; X;`009Version V04-003 (24-Jun-1985) Kevin Carosso, Hughes Aircraft Co., S&CG X;`009`009`009Cleaned this thing up quite a bit. X;`009`009`009- Got rid of MBX characteristic on the devices. This X;`009`009`009 was a holdover to before cloned devices really X;`009`009`009 existed. X;`009`009`009- Leave the TW template device OFFLINE. This is what X;`009`009`009 other TEMPLATE devices do, to indicate that you X;`009`009`009 really cannot do I/O to the template. Also left X;`009`009`009 it UNAVAILABLE, since the only way it is supposed to X;`009`009`009 get used is by cloning in the PY device. X;`009`009`009- Got rid of all modem operations. Improper use tended X;`009`009`009 to crash the system and they are not necessary. TW X;`009`009`009 device is always NOMODEM. HANGUP works as you want X;`009`009`009 it to without the modem stuff. X;`009`009`009- Setup forced characteristics and default permanent X;`009`009`009 characteristics. Forced are: NOAUTOBAUD, and NODMA. X;`009`009`009 Default is HANGUP. X;`009`009`009- Fixed up TW$DISCONNECT to properly send a message X;`009`009`009 to PY device's associated mailbox only if we are X;`009`009`009 actually doing a hangup. It used to do it every X;`009`009`009 time. Changed the message to MSG$_TRMHANGUP. X;`009`009`009- Got rid of the BRDCST on/off stuff. It doesn't seem X;`009`009`009 to be necessary any more. It also had a bug in it X;`009`009`009 somewhere that caused the terminal to start off X;`009`009`009 NOBRDCST when it shouldn't. X;`009`009`009- General house-cleaning. Got rid of commented out X;`009`009`009 lines from VMS V3 version. Fixed up typos in X;`009`009`009 comments. X; X;`009Version V04-004 (10-Feb-1986) Kevin Carosso, Hughes Aircraft Co., S&CG X;`009`009`009Changed all references to PTDRIVER to TPDRIVER because X;`009`009`009DEC (bless their little hearts) invented the %*%#$% X;`009`009`009TU81 and use PTA0: now. X; X;`009Version V04-005 (3-Sep-1986) Kevin Carosso, Hughes Aircraft Co., S&CG X;`009`009`009Fixed bug whereby the sequence ^S followed by ^Y X;`009`009`009would cause a system hang. Apparently the class X;`009`009`009driver calls the port RESUME routine when doing X;`009`009`009an ABORT and again when canceling the ^S. Calling X;`009`009`009RESUME twice like this is bad. In general, the X;`009`009`009port RESUME routine should not restart the output. X;`009`009`009In this driver, the RESUME and STOP routines aren't X;`009`009`009needed, so I got rid of them completely. X; X;`009`009`009Now on ^Y the ^S state is not cleared. You still X;`009`009`009need to type ^Q to get your output (including the X;`009`009`009*INTERRUPT* echo string. I thought this was another X;`009`009`009bug, but it's how my DHU-11 based terminals act X;`009`009`009and makes sense, because only a ^Q should really X;`009`009`009cancel a ^S. X; X;`009`009`009Also removed the TEMPLATE bit from the TWA0: template X;`009`009`009device since it was allowing people to $ASSIGN channels X;`009`009`009and get unhappy (lonely) TW devices that could crash X;`009`009`009the system. Now, the only way to clone TW devices X;`009`009`009is through the code in PYDRIVER, hence by assigning X;`009`009`009a channel to PYA0:. You can still $ASSIGN to TWA0:, X;`009`009`009but since the device is offline that shouldn't hurt X;`009`009`009anything. This fixed crashes caused by KERMIT and X;`009`009`009other things attempting to use TWA0:. You now get X;`009`009`009an error "DEVOFFLINE". X; X;`009`009`009Fixed a bug that caused a system crash from SHOW X;`009`009`009DEVICE/FULL of TWA0:. The ACL_QUEUE bit was set X;`009`009`009in the ORB but the ACL queue was invalid (was zeroed). X;`009`009`009I got rid of the bit, now all is well. X; X;`009Version V04-006 (5-Dec-1986) Kevin Carosso, Hughes Aircraft Co., S&CG X;`009`009`009Fixed the infamous character munging bug. The fix X;`009`009`009is really in PYDRIVER. X; X;`009Version V04-007 (10-JUL-1987) Kevin Carosso, Hughes Aircraft Co., S&CG X;`009`009`009In TW$INITLINE make sure to tell the class driver X;`009`009`009never to time out. This fix from Forrest Kenney X;`009`009`009at DEC. X; X;`009`009`009Also, while we're in here, lets make the device X;`009`009`009acquire "NODE$" prefixes, since all the other X;`009`009`009terminal drivers do. X; X;`009Version V04-008`009(2-NOV-1987) Kevin Carosso, Network Research Co. X;`009`009`009Only a version change here to keep in sync with X;`009`009`009TWDRIVER which has the real change. X; X;`009`009`009Fix thanks to Gerard K Newman @ San Diego X;`009`009`009Supercomputer Center. X; X;`009Version V05-001 (21-Dec-1987) Digital Equipment Corp. X;`009`009`009Add support for Symmetric Multiprocessing. X; X;`009Version V05-002 Digital Equipment Corp. X;`009`009`009Change TP driver names to TW. (TP driver it turns X;`009`009`009out, conflicted with the VAX/PSI terminal driver.) X;`009`009`009TWDRIVER and PYDRIVER are now registered with SQM X;`009`009`009so there will be no more conflicts. X;-- X`012 X`009.PAGE X`009.SBTTL`009Declarations X X`009.LIBRARY`009/SYS$LIBRARY:LIB.MLB/ X X; X; EXTERNAL DEFINITIONS: X; X.NOCROSS X`009$ACBDEF`009`009`009`009; AST control block definitions X`009$CRBDEF`009`009`009`009; DEFINE CRB X`009$DCDEF`009`009`009`009; DEVICE CLASSES AND TYPES X`009$DDBDEF`009`009`009`009; DEFINE DDB X`009$DDTDEF`009`009`009`009; DEFINE DDT X`009$DEVDEF`009`009`009`009; DEVICE CHARACTERISTICS X`009$DYNDEF`009`009`009`009; Dynamic structure definitions X`009$IDBDEF`009`009`009`009; DEFINE IDB OFFSETS X`009$IODEF`009`009`009`009; I/O Function Codes X`009$IRPDEF`009`009`009`009; IRP definitions X`009$MSGDEF`009`009`009`009; Message types X`009$ORBDEF`009`009`009`009; Define Object's Rights Block offsets X`009$SSDEF`009`009`009`009; DEFINE System Status X; X; If SS$_INVLICENSE exists, we must be building on V5. Go ahead and X; define our conditionals so we can build a V5 driver. X; X.IF`009DEFINED`009SS$_INVLICENSE X`009VMS_V5 = 1 X`009.PRINT`009`009; TWDRIVER -- Building VMS V5 compatible driver X.IF_FALSE X`009.PRINT`009`009; TWDRIVER -- Building VMS V4 compatible driver X.ENDC X X.IF`009DEFINED`009VMS_V5 X`009$SPLCODDEF`009`009`009; Spin lock code definitions X.ENDC X X`009$TTDEF`009`009`009`009; DEFINE TERMINAL TYPES X`009$TT2DEF`009`009`009`009; Define Extended Characteristics X`009$TTYDEF`009`009`009`009; DEFINE TERMINAL DRIVER SYMBOLS X`009$TTYDEFS`009`009`009; DEFINE TERMINAL DRIVER SYMBOLS X`009$TTYMACS`009`009`009; DEFINE TERMINAL DRIVER MACROS X`009$UCBDEF`009`009`009`009; DEFINE UCB X`009$VECDEF`009`009`009`009; DEFINE VECTOR FOR CRB X.CROSS X X; X; LOCAL DEFINITIONS X; XDT$_TW = ^XFF X; X; Definitions that follow the standard UCB fields for TW driver X; This will all probably have to be the same as the standard term X X`009$DEFINI`009UCB`009`009`009; Start of UCB definitions X X`009.=UCB$K_TT_LENGTH`009`009; Position at end of UCB X X$DEF`009UCB$L_TW_XUCB`009.BLKL`0091`009; UCB of corresponding X`009`009`009`009`009; control/application unit X$DEF`009UCB$L_TW_XON_AST .BLKL`0091`009; AST list for XON event notification X$DEF`009UCB$L_TW_XOFF_AST .BLKL`0091`009; AST list for XOFF event notification X$DEF`009UCB$L_TW_SET_AST .BLKL`0091`009; AST list for notification of SET_LINE X$DEF`009UCB$K_TW_LEN`009`009`009; Size of UCB X X`009$DEFEND`009UCB`009`009`009; End of UCB definitions X; X; Definitions that follow the standard UCB fields in PY devices X; X XBUFFER_SIZE = 32 X X`009$DEFINI UCB`009`009`009; Start of UCB definitions X `009.=UCB$K_LENGTH`009`009`009; position at end of UCB V$DEF`009UCB$L_PY_XUCB`009.BLKL 1`009`009; UCB of terminal part of pseudo termin Xal V$DEF`009UCB$T_PY_BUFFER`009.BLKB`009BUFFER_SIZE ; Buffer to store characters to X be transmitted X$DEF`009UCB$K_PY_LEN`009`009`009; Size of UCB X X `009$DEFEND UCB`009`009`009; end of UCB definitions X X; X; LOCAL STORAGE X; X`009.PSECT`009$$$105_PROLOGUE X`012 X`009.PAGE X`009.SBTTL`009Standard Tables X X; X; Driver prologue table: X; XTW$DPT:: X`009DPTAB`009-`009`009`009; DRIVER PROLOGUE TABLE X`009`009END=TW_END,-`009`009; End and offset to INIT's vectors X`009`009UCBSIZE=UCB$K_TW_LEN,- `009; SIZE OF UCB X`009`009FLAGS=DPT$M_NOUNLOAD,-`009; Do not allow unload X`009`009ADAPTER=NULL,-`009`009; ADAPTER TYPE X`009`009NAME=TWDRIVER,-`009`009; NAME OF DRIVER X`009`009VECTOR=PORT_VECTOR X`009DPT_STORE INIT X`009DPT_STORE UCB,UCB$W_UNIT_SEED,W,0`009; SET UNIT # SEED TO ZERO X X.IF`009NOT_DEFINED`009VMS_V5 X`009DPT_STORE UCB,UCB$B_FIPL,B,8 `009`009; FORK IPL X.IF_FALSE X`009DPT_STORE UCB,UCB$B_FLCK,B,SPL$C_IOLOCK8 ; FORK LOCK X.ENDC X X`009DPT_STORE UCB,UCB$L_DEVCHAR,L,<-; CHARACTERISTICS X`009`009`009DEV$M_REC!-`009; X`009`009`009DEV$M_IDV!-`009; X`009`009`009DEV$M_ODV!-`009; X`009`009`009DEV$M_TRM!-`009; X`009`009`009DEV$M_CCL> X`009DPT_STORE UCB,UCB$L_DEVCHAR2,L, -`009`009; Device characteristics X`009`009`009<DEV$M_NNM>`009`009`009; prefix with "NODE$" X`009DPT_STORE UCB,UCB$B_DEVCLASS,B,DC$_TERM`009`009; X`009DPT_STORE UCB,UCB$B_TT_DETYPE,B,TT$_UNKNOWN`009; TYPE X`009DPT_STORE UCB,UCB$W_TT_DESIZE,@W,TTY$GW_DEFBUF`009; BUFFER SIZE X`009DPT_STORE UCB,UCB$L_TT_DECHAR,@L,TTY$GL_DEFCHAR`009; DEFAULT CHARACTERS X`009DPT_STORE UCB,UCB$L_TT_DECHA1,@L,TTY$GL_DEFCHAR2; DEFAULT CHARACTERS X`009DPT_STORE UCB,UCB$W_TT_DESPEE,@B,TTY$GB_DEFSPEED; DEFAULT SPEED X`009DPT_STORE UCB,UCB$W_TT_DESPEE+1,@B,TTY$GB_RSPEED; DEFAULT SPEED X`009DPT_STORE UCB,UCB$B_TT_DEPARI,@B,TTY$GB_PARITY`009; DEFAULT PARITY X`009DPT_STORE UCB,UCB$B_TT_PARITY,@B,TTY$GB_PARITY`009; DEFAULT PARITY X`009DPT_STORE UCB,UCB$B_DEVTYPE,B,TT$_UNKNOWN`009; TYPE X`009DPT_STORE UCB,UCB$W_DEVBUFSIZ,@W,TTY$GW_DEFBUF`009; BUFFER SIZE X`009DPT_STORE UCB,UCB$L_DEVDEPEND,@L,TTY$GL_DEFCHAR`009; DEFAULT CHARACTERS X`009DPT_STORE UCB,UCB$L_TT_DEVDP1,@L,TTY$GL_DEFCHAR2; Default Characters X`009DPT_STORE UCB,UCB$W_TT_SPEED,@B,TTY$GB_DEFSPEED`009; DEFAULT SPEED X`009DPT_STORE UCB,UCB$W_TT_SPEED+1,@B,TTY$GB_RSPEED`009; DEFAULT SPEED X`009DPT_STORE UCB,UCB$B_DIPL,B,8`009`009`009; DEV IPL (no device) X`009DPT_STORE UCB,UCB$L_TT_WFLINK,L,0`009; Zero write queue. X`009DPT_STORE UCB,UCB$L_TT_WBLINK,L,0`009; Zero write queue. X`009DPT_STORE UCB,UCB$L_TT_RTIMOU,L,0`009; Zero read timed out disp. X; X; Added ORB definitions X; X`009DPT_STORE ORB, ORB$B_FLAGS, B, <ORB$M_PROT_16> X`009DPT_STORE ORB, ORB$W_PROT, @W, TTY$GW_PROT X`009DPT_STORE ORB, ORB$L_OWNER, @L, TTY$GL_OWNUIC X X`009DPT_STORE DDB,DDB$L_DDT,D,TW$DDT X X`009DPT_STORE REINIT X`009DPT_STORE CRB,CRB$L_INTD+VEC$L_INITIAL,D,TW$INITIAL; CONTROLLER INIT X`009DPT_STORE CRB,CRB$L_INTD+VEC$L_UNITINIT,D,TW$INITLINE; UNIT INIT X`009DPT_STORE END X X`009DDTAB`009DEVNAM`009= TW,-`009`009; Dummy TW port Driver Dispatch table X`009`009START`009= 0,- X`009`009FUNCTB`009= 0 X X`009.PSECT $$$115_DRIVER,LONG X X; The associated class driver uses this table to command the port driver. X; The address of the table is contained in the terminal UCB extension area. X; The offset definitions are defined by the ttydefs. X X; X; TW specific dispatch table X; XPORT_VECTOR: X; X; Added port vector table using VEC macros X; X`009$VECINI`009TW,TW$NULL X`009$VEC`009STARTIO,TW$STARTIO X`009$VEC`009DISCONNECT,TW$DISCONNECT X`009$VEC`009SET_LINE,TW$SET_LINE X`009$VEC`009XON,TW$XON X`009$VEC`009XOFF,TW$XOFF X`009$VEC`009ABORT,TW$ABORT X`009$VECEND X XTW$NULL:`009`009`009`009; Null port routine X`009RSB X X`012 X`009.PAGE X`009.SBTTL`009TW$INITIAL - Initialize pseudo terminal interface X;++ X; TW$INITIAL - INITIALIZE INTERFACE X; X; FUNCTIONAL DESCRIPTION: X; X; This routine is entered at device CONNECT time and power recovery. X; All we do is connect ourselves up to the class driver. X; X; INPUTS: X; X;`009R4 = ADDRESS OF THE UNIT CSR X;`009R5 = IDB OF UNIT X;`009R8 = ADDRESS OF THE UNIT CRB X; X; OUTPUTS: X; X;`009R0, R1, R2, R3 are destroyed. X; X; IMPLICIT INPUTS: X; X;`009IPL = IPL$_POWER X; X;-- XTW$INITIAL:: X X`009CLASS_CTRL_INIT TW$DPT,PORT_VECTOR X`009MOVB`009#DT$_TW,CRB$B_TT_TYPE(R8) X`009RSB X`012 X`009.PAGE X`009.SBTTL`009TW$INITLINE - RESET INDIVIDUAL LINE X;++ X; TW$INITLINE - RESET pseudo terminal control state X; X; FUNCTIONAL DESCRIPTION: X; X; This routine performs a simple unit initialization. X; X; X; INPUTS: X; X;`009R5 = UCB ADDRESS X; X; OUTPUTS: X; X;`009R2,R5 ARE PRESERVED. X;-- XTW$INITLINE::`009`009`009`009; RESET SINGLE LINE X`009MOVAL`009TW$VEC,R0`009`009; Set TW port vector table X`009CLASS_UNIT_INIT X`009TSTL`009UCB$W_UNIT(R5)`009`009; Skip initialization of TEMPLATE X`009BEQL`00940$`009`009`009; Unit #0 = Template: Skip everything! X X`009BBS`009#UCB$V_POWER,UCB$W_STS(R5),-`009; Skip if powerfail recovery X`009`00920$ X`009MOVL`009UCB$L_TT_LOGUCB(r5), r1`009`009; Look at logical term UCB X`009BEQL`00910$`009`009`009`009; If none, then has no refs X`009TSTW`009UCB$W_REFC(R1)`009`009`009; See if TW has any references X`009BNEQ`00920$`009`009`009`009; If so don't reinit ucb X10$:`009BSB`009SET_FORCED_CHARS`009`009; Set required characteristics X`009BISL`009#TT2$M_HANGUP,-`009`009`009; Set default characteristics X`009`009UCB$L_TT_DECHA1(R5)`009`009; X`009MOVL`009UCB$L_TT_CLASS(R5),R1`009`009; Address class vector table X X.IF`009NOT_DEFINED`009VMS_V5 X`009BISW`009#<TTY$M_PC_NOTIME!`009-`009; Tell class driver not to time out, X`009`009 TTY$M_PC_MULTISESSION>,-`009; and do not count as user X`009`009UCB$W_TT_PRTCTL(R5)`009`009; X.IF_FALSE X`009BISW`009#<TTY$M_PC_NOTIME!`009-`009; Tell class driver not to time out, X`009`009 TTY$M_PC_NOMODEM!`009-`009; do not allow modem processing, X`009`009 TTY$M_PC_MULTISESSION>,-`009; and do not count as user X`009`009UCB$W_TT_PRTCTL(R5)`009`009; X.ENDC X V`009BICL2`009#TT$M_MODEM,UCB$L_DEVDEPEND(R5) ; Do not allow modem bit to ever b Xe X`009BICL2`009#TT$M_MODEM,UCB$L_TT_DECHAR(R5) ; set. X`009BISL2`009#TT$M_HOSTSYNC,UCB$L_DEVDEPEND(R5) ; Always set device to HOSTSYNC X`009BISL2`009#TT$M_HOSTSYNC,UCB$L_TT_DECHAR(R5) ; X`009JSB`009@CLASS_SETUP_UCB(R1)`009`009; Init ucb fields X20$:`009BBC`009#UCB$V_POWER,UCB$W_STS(R5),40$`009; Powerfail handler X`009MOVL`009UCB$L_TT_CLASS(R5),R0`009`009; X`009JMP`009@CLASS_POWERFAIL(R0)`009`009; X X40$:`009RSB X X X`012 X;++ X; TW$SET_LINE - Used to Reset SPEED and UCB X; X; FUNCTIONAL DESCRIPTION: X; X;`009Called whenever someone tries to set terminal modes/characteristics. X;`009All we do is reset anything that we think should never be changed. X; X; INPUTS: X; X;`009R5 = UCB ADDRESS of TW X; X; OUTPUTS: X; X;`009none X;-- XTW$SET_LINE:: X`009MOVAB`009UCB$L_TW_SET_AST(R5),R4`009`009; Get list head address X`009TSTL`009(R4)`009`009`009`009; See if list is empty X`009BEQL`009SET_FORCED_CHARS`009`009; Empty do not deliver ASTs X`009JSB`009G^COM$DELATTNAST`009`009; Delliver all ASTs X XSET_FORCED_CHARS: X; X; This little routine sets certain required characteristics. It is called by X; the INITLINE code to set them at the outset and by the SETLINE code to reset X; them unconditionally if someone tries to set them. X; X`009BICL2`009#<TT2$M_DMA ! TT2$M_AUTOBAUD>, - X`009`009UCB$L_DEVDEPND2(R5) X`009BICL2`009#<TT2$M_DMA ! TT2$M_AUTOBAUD>, - X`009`009UCB$L_TT_DECHA1(R5) X X.IF`009NOT_DEFINED`009VMS_V5 V`009BICL2`009#TT$M_MODEM,UCB$L_DEVDEPEND(R5) ; Do not allow modem bit to ever b Xe X`009BICL2`009#TT$M_MODEM,UCB$L_TT_DECHAR(R5) ; set. X.ENDC X X`009RSB X X`012 X X`009.Page X;++ X; TW$DISCONNECT - SHUT OFF UNIT X; X; FUNCTIONAL DESCRIPTION: X; X; This routine is used when for some reason the unit must be disconnected. X; This can be at hangup or last deassign. If the PY device has an associated X; mailbox, signal an MSG$_TRMHANGUP in it. X; X; Although we are disconnecting a virtual device, we don't do anything X; more than send a hangup message because we want to allow the device to X; be reusable. It's really only if the control device (PY) goes away X; that we mark the TW offline and delete it's UCB. That code's all in X; PYDRIVER. X; X; INPUTS: X; X;`009R0 = (0 for hangup, 1 for nohangup) X;`009R5 = UCB ADDRESS of TW X; X; OUTPUTS: X; X;`009R3,R4 ARE USED. X;-- XTW$DISCONNECT:: X`009blbs`009r0, 99$`009`009`009; If no hangup, skip all this. X X`009PUSHR`009#^M<R0,R1,R2,R3,R4,R5>`009; Save the registers X X`009MOVL`009UCB$L_TW_XUCB(R5),R5`009; Get PY UCB X`009BEQL`00910$`009`009`009; If disconnected, ignore X`009MOVL`009UCB$L_AMB(R5),R3`009; Load Associated Mailbox of PY UCB X`009BEQL`00910$`009`009`009; If EQL then no mailbox X`009MOVZWL`009#MSG$_TRMHANGUP,R4`009; Load Message Type X`009JSB`009G^EXE$SNDEVMSG`009`009; Send the message X10$:`009POPR`009#^M<R0,R1,R2,R3,R4,R5>`009; Restore everything X99$:`009RSB X X X`012 X`009.PAGE X`009.SBTTL`009TW START I/O ROUTINE X;++ X; TW$STARTIO - START I/O OPERATION ON TW X; X; FUNCTIONAL DESCRIPTION: X; X;`009This routine is entered from the device independent terminal startio X;`009routine to enable output interrupts on an idle TW unit X; X; INPUTS: X; X;`009R3 =`009Character`009AND`009CC = Plus (N EQL 0) X;`009R3 =`009Address`009`009AND`009CC = Negative (N EQL 1) X; X;`009R5 = UCB ADDRESS X; X; OUTPUTS: X; X;`009R5 = UCB ADDRESS X;-- XTW$STARTIO::`009`009`009`009; START I/O ON UNIT X`009BGEQ`00920$`009`009`009; Single character X`009BISW`009#TTY$M_TANK_BURST,-`009; Signal burst active X`009`009UCB$W_TT_HOLD(R5) X10$: X; X; Here we must do something to notify our mate device that X; there is data to pick up X; X`009PUSHR`009#^M<R0,R2,R3,R4,R5>`009; Save TW UCB X`009MOVL`009UCB$L_TW_XUCB(R5),R5`009; Switch to PY UCB X`009BEQL`00917$`009`009`009; PY is disconnected: skip X X.IF`009NOT_DEFINED`009VMS_V5 X`009DSBINT`009UCB$B_FIPL(R5) X.IF_FALSE X`009FORKLOCK`009`009-`009; Take out PY device FORK LOCK X`009`009LOCK=UCB$B_FLCK(R5), -`009; X`009`009SAVIPL=-(SP),`009-`009; X`009`009PRESERVE=NO X.ENDC X X`009BBC`009#UCB$V_BSY,-`009`009; If the device isn't busy, X`009`009UCB$W_STS(R5),15$`009; then dont do i/o X`009MOVL`009UCB$L_IRP(R5),R3`009; Get IRP address X`009JSB`009G^IOC$INITIATE`009`009; IOC$INITIATE needs IRP addr X15$: X X.IF`009NOT_DEFINED`009VMS_V5 X`009ENBINT X.IF_FALSE X`009FORKUNLOCK`009`009-`009; Release PY drvice FORK LOCK X`009`009LOCK=UCB$B_FLCK(R5), -`009; X`009`009NEWIPL=(SP)+,`009-`009; X`009`009PRESERVE=NO,`009-`009; X`009`009CONDITION=RESTORE`009; X.ENDC X X16$:`009POPR`009#^M<R0,R2,R3,R4,R5>`009; Switch back to TW UCB X`009RSB X; X; Come here if we have no PY control device to send stuff to. Just X; suck all the data we can out of the class driver and throw it away. X; X17$:`009POPR`009#^M<R0,R2,R3,R4,R5>`009; Switch back to TW UCB X18$:`009BICB`009#UCB$M_INT, UCB$W_STS(r5) X`009JSB`009@UCB$L_TT_GETNXT(r5) X`009TSTB`009UCB$B_TT_OUTYPE(r5) X`009BNEQ`00918$ X`009RSB X X20$: X`009MOVB`009R3,UCB$W_TT_HOLD(R5)`009; Save output character X`009BISW`009#TTY$M_TANK_HOLD,-`009; Signal charater in tank X`009`009UCB$W_TT_HOLD(R5) X`009BRB`00910$ X`012 X`009.PAGE X`009.SBTTL`009Port Routines Stop,Resume,XON,XOFF X;++ X; TW$XOFF -`009Send Xoff X; TW$XON -`009Send Xon X; TW$ABORT -`009Abort current output X; X; Functional Description: X; X;`009These routines are used by the terminal class driver to X;`009control output on the port X; X; Inputs: X; X;`009R5 = UCB Address X; X; Outputs: X; X;`009R5 = UCB Address X;-- X`009TTY$M_TP_XOFF = 8 X`009TTY$V_TP_XOFF = 3 X`009ASSUME`009TTY$M_TP_XOFF EQ TTY$M_TP_DLLOC+4 X`009ASSUME TTY$V_TP_XOFF EQ TTY$V_TP_DLLOC+1 X XTW$XOFF: X`009PUSHR`009#^M<R0,R1,R4> `009`009; Save registers X`009MOVAB`009UCB$L_TW_XOFF_AST(R5),R4 ; Get address of AST list X`009CMPB`009R3,#^X13`009`009; Is XOFF X`009BNEQ`009TW$XON_XOFF_CMN`009; NEQ not XONN use common rotuine X`009BISB`009#TTY$M_TP_XOFF,`009-`009; Set XOFF bit in UCB X`009`009UCB$B_TP_STAT(R5)`009; X`009BRB`009TW$XON_XOFF_CMN`009`009; Do common processing X XTW$XON: X`009PUSHR`009#^M<R0,R1,R4>`009`009; Save registers X`009MOVAB`009UCB$L_TW_XON_AST(R5),R4 ; Get address of AST list X`009CMPB`009R3,#^X11`009`009; Is it XON X`009BNEQ`009TW$XON_XOFF_CMN`009; NEQ not XONN use common rotuine X`009BICB`009#TTY$M_TP_XOFF,`009-`009; Clear XOFF bit in UCB X`009`009UCB$B_TP_STAT(R5)`009; X; X; Schedule xon/xoff to be sent, and changed schedule bit mask X; XTW$XON_XOFF_CMN:`009`009`009; Common XONN/XOFF code X`009TSTL`009(R4)`009`009`009; See if AST present X`009BEQL`00930$`009`009`009; EQL no AST to deliver X`009MOVL`009R4,R0`009`009`009; Copy list address X X10$: X`009MOVL`009(R0),R0`009`009`009; Get next entry X`009BEQL`00920$`009`009`009; All done so deliver ASTs X`009MOVZBW`009R3,ACB$L_KAST+4(R0)`009; Store new param value X`009BRB`00910$`009`009`009; Look for another entry X20$: X`009JSB`009G^COM$DELATTNAST`009; Deliver the ASTs X30$: X`009POPR`009#^M<R0,R1,R4>`009`009; Restore registers X`009BISW`009#TTY$M_TANK_PREMPT,UCB$W_TT_HOLD(R5)`009; Schedule xon X`009MOVB`009R3,UCB$B_TT_PREMPT(R5)`009`009`009; Save character X`009RSB X X; X; Abort any port currently active X; XTW$ABORT: X`009BBCC`009#TTY$V_TANK_BURST, -`009; reset burst active X`009`009UCB$W_TT_HOLD(R5),10$`009; X10$: X`009RSB X`012 XTW_END:`009`009`009`009; End of driver X X`009.END $ GOSUB UNPACK_FILE $ EXIT -+-+-+-+-+ End of part 5 +-+-+-+-+-