FORTRAN/ALGOL INPUT/OUTPUT DIAGNOSTICS


During execution of an object program, diagnostics may be printed on the Standard
Teleprinter Output unit by the input/output routine (FRMTR) supplied for FORTRAN
nd ALGOL programs. t  When a halt occurs, the A-Register contains a code which
further defines the nature of the error:

Teleprinter
Message     A-Register      Explanation                 Action


*EQR        Unit Refer-     Equipment error:            Place next tape in input
            ence Number     End of input tape           on device, or for Tape
                            on 2752A Teleprinter        or Punch, load new reel of
                            2737A Punched Tape          tape. Press RUN.
                            Reader; tape supply low
                            on 2753A Tape Punch.
                            B-Register contains
                            status word of Equip-
                            ment Table entry.

*FMT         000001         FORMAT error:                Irrecoverable error;
                            a) Word field does not       program must be re-
                               contain proper digits.    compiled.
                            b) No decimal point after
                               w field.
                            c) w-d <= 4 for E specifi-
                               cation.

*FMT         000002         a) FORMAT specifica-         Irrecoverable error;
                               tions are nested more     program must be re-
                               than one level deep.      compiled.
                            b) A FORMAT statement
                               contains unequal
                               number of right pa-
                               rentheses and left pa-
                               rentheses.

*FMT         000003         a) Illegal character in      Irrecoverable error;
                               FORMAT statement.         program must be re-
                            b) Format repetition         compiled.
                               factor of zero.
                            c) FORMAT statement 
                               defines more char-
                               acter positions than
                               possible for device

*FMT         000004         Illegal character in fixed   Verify data.
                            field input item or num-
                            ber not right-justified
                            in field.

*FMT         000005         A number has an illegal      Verify data.
                            form (e.g., two E's,
                            two decimal points, two
                            signs, etc.).

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t The object program need not be generated by FORTRAN or ALGOL; Assembler
  language programs can refer to FRMTR through the entry point .DIO.

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