VMS_EPICS.MEM   20-Mar-2003
                                             -------------

VMS access to EPICS works ok.  The following IDL functions have
been implemented, emulating their description on web page:
    http://www.aps.anl.gov/~cha/catcher/ezcaIDLRef.html

      sts = caGet( pvname , dataBuf [,/STRING] [,MAX=maxCount] )
      sts = caGetCountAndType( pvname , count , type )

Expected "sts" is zero.

The following functions still exist, but are superseded by "caGet":
   epicsGetLong
   epicsGetFloat
   epicsGetString

The IDL functions are maintained in cvs:  NSTX$:[UTIL.SOURCE.IDL_CVS.EPICS]

      ===========================================================

Examples:
    IDL> sts=caGet()
    Usage is:   sts = caGet(pvname, dataBuf [,/STRING] [,MAX=n] )
       Some example pvnames:
               ck_currshotSEL       (double !)
               ck_DateTime_SI       (string)
               vm_plc31_ig205_CALC  (double)
               fw_echSts_MBBID      (long)

    IDL> sts=caGet('ck_currshotSEL',v) & help,v
    V               DOUBLE    =        110301.00    ;Numeric Shotnumber
    IDL> sts=caGet('ck_currshotSEL',v,/STR) & help,v
    V               STRING    = '110301'            ;String Shotnumber

    IDL> sts=caGet('ck_DateTime_SI',v) & help,v
    V               STRING    = '03/21/03 11:52:26'

    IDL> sts=caGet('vm_plc31_ig205_CALC',v) & help,v
    V               DOUBLE    =    1.4588143e-07

    IDL> sts=caGet('fw_echSts_MBBID',v) & help,v
    V               LONG      =           33

    =============================================

The shared library which contains the EPICS functions is
    SYS$SHARE:CAUTILSHR.EXE

This shared library provides C-language functions which can
be called by user-written code.  Among these functions are:
   ezcaGet
   ezcaGetIEEE

Calling "ezcaGet" is described in the EPICS documentation.  It returns
floating point values in the default VMS formats.
"ezcaGetIEEE" is just the same as "ezcaGet", but it returns floating
point values in IEEE format, as required by IDL.

    =============================================

Building CAUTILSHR:
   Refer to:  NSTX$:[EPICS.EPICS_VMS_SOURCE]README.MEM

   Source code is in NSTX$:[EPICS.EPICS_VMS_SOURCE...].

! 25-Jan-05 PR/PS The CA server address is hard-coded into the C
!                 shareable library:
KEES$ sea NSTX$:[EPICS.EPICS_VMS_SOURCE.CHANNEL_ACCESS]envdata.c epics_ca_addr
epicsShareDef READONLY ENV_PARAM EPICS_CA_ADDR_LIST = { "EPICS_CA_ADDR_LIST", "1
98.35.15.132" };
        &EPICS_CA_ADDR_LIST,