FOR$IOS_MIXFILACC. An attempt was made to use any of the following combinations:

• Formatted and unformatted operations on the same unit
• An invalid combination of access modes on a unit, such as direct and sequential
• A Compaq Fortran RTL I/O statement on a logical unit that was opened by a program coded in another language

FOR$IOS_INVLOGUNI. A logical unit number greater than 2,147,483,647 or less than zero was used in an I/O statement.

FOR$IOS_ENDFILERR. One of the following conditions occurred:

• The file was not a sequential organization file with variable-length records.
• The file was not opened for sequential, append, or direct access.
• An unformatted file did not contain segmented records.
• The Compaq Fortran RTL I/O system detected an error during execution of an ENDFILE statement.

FOR$IOS_UNIALROPE. A DEFINE FILE statement specified a logical unit that was already opened.

FOR$IOS_SEGRECFOR. An invalid segmented record control data word was detected in an unformatted sequential file. The file was probably either created with RECORDTYPE='FIXED' or 'VARIABLE' in effect, or was created by a program written in a language other than Fortran or Fortran 90.

FOR$IOS_ATTACCNON. A direct-access READ or FIND statement attempted to access beyond the end of a relative file (or a sequential file on disk with fixed-length records) or access a record that was previously deleted from a relative file.

FOR$IOS_INCRECLEN. An attempt was made to open a direct access file without specifying a record length.

FOR$IOS_ERRDURWRI. The Compaq Fortran RTL I/O system detected an error condition during execution of a WRITE statement.

FOR$IOS_ERRDURREA. The Compaq Fortran RTL I/O system detected an error condition during execution of a READ statement.

FOR$IOS_RECIO_OPE. While processing an I/O statement for a logical unit, another I/O operation on the same logical unit was attempted, such as a function subprogram that performs I/O to the same logical unit that was referenced in an expression in an I/O list or variable format expression.

FOR$IOS_INSVIRMEM. The Compaq Fortran RTL attempted to exceed its available virtual memory while dynamically allocating space. To overcome this problem, investigate increasing the data limit (Control Panel, System, Performance Tab, Virtual Memory). Before you try to run this program again, wait until the new system resources take effect.

FOR$IOS_NO_SUCDEV. A pathname included an invalid or unknown device name when an OPEN operation was attempted.

FOR$IOS_FILNAMSPE. A pathname or file name given to an OPEN or INQUIRE statement was not acceptable to the Compaq Fortran RTL I/O system.

FOR$IOS_INCRECTYP. The RECORDTYPE value in an OPEN statement did not match the record type attribute of the existing file that was opened.

FOR$IOS_KEYVALERR. An improper value was specified for an OPEN or CLOSE statement specifier requiring a value.

FOR$IOS_INCOPECLO. Specifications in an OPEN or CLOSE statement were inconsistent. Some invalid combinations follow:

• READONLY or ACTION='READ' with STATUS='NEW' or STATUS='SCRATCH'
• READONLY with STATUS='REPLACE', ACTION='WRITE', or ACTION='READWRITE'
• ACCESS='APPEND' with READONLY, ACTION='READ', STATUS='NEW', or STATUS='SCRATCH'
• DISPOSE='SAVE', 'PRINT', or 'SUBMIT' with STATUS='SCRATCH'
• DISPOSE='DELETE' with READONLY
• CLOSE statement STATUS='DELETE' with OPEN statement READONLY
• ACCESS='APPEND' with STATUS='REPLACE'
• ACCESS='DIRECT' with POSITION='APPEND' or 'ASIS'

FOR$IOS_WRIREAFIL. A write operation was attempted to a file that was declared ACTION='READ' or READONLY in the OPEN statement that is currently in effect.

FOR$IOS_INVARGFOR. The compiler passed an invalid or improperly coded argument to the Compaq Fortran RTL. This can occur if the compiler is newer than the RTL in use.

FOR$IOS_INCFILORG. The file organization specified in an OPEN statement did not match the organization of the existing file.

FOR$IOS_NO_CURREC. Attempted to execute a REWRITE statement to rewrite a record when the current record was undefined. To define the current record, execute a successful READ statement. You can optionally perform an INQUIRE statement on the logical unit after the READ statement and before the REWRITE statement. No other operations on the logical unit may be performed between the READ and REWRITE statements.

FOR$IOS_DELERR. An error condition was detected by the Compaq Fortran RTL I/O system during execution of a DELETE statement.

FOR$IOS_FINERR. The Compaq Fortran RTL I/O system detected an error condition during execution of a FIND statement.

FOR$IOS_FMTSYN. Check the statement containing xx, a character substring from the format string, for a format syntax error. For more information, see the FORMAT statement.

FOR$IOS_LISIO_SYN. The data in a list-directed input record had an invalid format, or the type of the constant was incompatible with the corresponding variable. The value of the variable was unchanged.

FOR$IOS_INFFORLOO. The format associated with an I/O statement that included an I/O list had no field descriptors to use in transferring those values.