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1988-08-16
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129 lines
c
c VAXNET global declarations
c
implicit integer*4 (a-z)
! logical names used for assignment of I/O channels
character*(*) localLogName,defaultLogNam
parameter (maxLogNames = 50)
parameter (noLinesErr = 998)
c
c This should be SYS$ERROR for the FTS KERMIT
c as INPUT and OUTPUT are re-asssigned.
c
parameter (localLogName = 'SYS$ERROR')
parameter (defaultLogNam = 'KERMIT$REM')
parameter (OFF = 0)
parameter (ON = 1)
! tty control characters
integer CR,LF,cntlC,cntlD,cntlP,cntlY,
1 unixInterrupt,unixEot,escapeChar
parameter (LOCALONLY = 0)
parameter (CR = 13)
parameter (LF = 10)
parameter (CNTLA = 1)
parameter (CNTLB = 2)
parameter (CNTLC = 3)
parameter (CNTLD = 4)
parameter (CNTLE = 5)
parameter (CNTLF = 6)
parameter (CNTLG = 7)
parameter (CNTLH = 8)
parameter (CNTLI = 9)
parameter (CNTLJ = 10)
parameter (CNTLK = 11)
parameter (CNTLL = 12)
parameter (CNTLM = 13)
parameter (CNTLN = 14)
parameter (CNTLO = 15)
parameter (CNTLP = 16)
parameter (CNTLQ = 17)
parameter (CNTLR = 18)
parameter (CNTLS = 19)
parameter (CNTLT = 20)
parameter (CNTLU = 21)
parameter (CNTLV = 22)
parameter (CNTLW = 23)
parameter (CNTLX = 24)
parameter (CNTLY = 25)
parameter (CNTLZ = 26)
parameter (unixNewLine1 = CR)
parameter (unixNewLine2 = LF)
parameter (unixInterrupt = cntlC)
parameter (unixEOT = cntlD)
parameter (escapeChar = cntlP)
! I/O buffer sizes
parameter localToRemoteBufSize = 500
parameter remoteToLocalBufSize = 500
parameter iosbBufferSize = 100
parameter iosbArraySize = 400
! max characters buffered before writing local terminal
parameter maxLocalWrite = 500
! parameters governing monitoring of the remote system's typeahead buffer
!
! the terminal driver XOFFS the remote when the typeahead buffer has
! less than 8 characters left. A wait time of 10 msecs is 5 or 6
! characters at 4800 baud. So typeAheadLimit must be at least 14
! smaller than maxTypeAhead.
parameter maxTypeAhead = 78 ! system wide size of typeahead buffer
parameter typeAheadLimit = 40 ! max chars allowed before we read
character*(*) remoteWaitTime
parameter (remoteWaitTime = '0 00:00:00.01')
! i/o commands to remote system read routine
parameter keepReading = 1
parameter stopReading = 2
! all event flags used herein
parameter waitRemoEFN = 1
! variables
integer*4 localReadFunc, remoteReadFunc, remoteTypeAhdFunc
integer*4 localTerminator(2), remoteTerminator(2)
integer*4 localReadSize
integer*4 localWriteFunc, remoteWriteFunc
! i/o control storage
integer*2 localReadIosb(4), remoteReadIosb(4)
integer*2 localWriteIosb(4), remoteWriteIosb(4)
integer*4 localChannel,remoteChannel
integer*4 localWrtIosbUsed ! current # of write Iob buffers in use
! and hence outstanding.
integer*4 localWrtIosbAvail ! current available buffer
! buffers
logical*1 localToRemoteBuf(localToRemoteBufSize)
logical*1 remoteToLocalBuf(remoteToLocalBufSize)
integer*4 remoteReadStart ! pointer to empty space in read buf
integer*4 localWriteChars ! chars waiting to go to local term
logical*4 waitingToReadRemote ! indicates stalling for buffer space
! trace state variable set by the value of parameter tracing
logical*1 firstTimeRun, noPassAll, firstTurn
integer*4 remoteReadCnt
! termination code for exit handler (not currently used)
integer*4 exitStatus
logical*4 connected, shuttingDown
common /global/ localToRemoteBuf, remoteToLocalBuf,
1 localWriteSize, localReadSize,
1 localChannel, remoteChannel,
1 localReadFunc, remoteReadFunc,
1 localTerminator, remoteTerminator,
1 localWriteFunc, remoteWriteFunc,
1 localReadIosb, remoteReadIosb,
1 localWriteIosb, remoteWriteIosb,
1 localWrtIosbAvail,localWrtIosbUsed,
1 waitingToReadRemote, localWriteChars,
1 remoteReadStart, exitStatus, firstTimeRun,
1 noPassAll, remoteReadCnt,
1 connected, shuttingDown