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Appendix B Error Messages

B.1

Format of error messages

There are two classes of errors trapped by the assembler: fatal and recoverable.

A fatal error stops the assembly there and then, returning you to the caller (which may or may not be DOS;

CBE can also invoke the assembler) with a message and error number describing the problem.

The actual format of the error messages is as follows:

file.asm(line): as<pass> : Error <errno> : <message> '<text>'

For Example:

Note:

The name of the program that handled the error (third field), can be as1 or as2 depending on

the pass in progress when the error was found.

The error number (fourth field) can be used as an index to find a more complete description of

the error in the next section (fatal errors read 'FATAL nn', instead of 'ERROR nn').

B.2

File CBE.ERR

Fatal and recoverable errors both are copied into the file CBE.ERR as they occur. CBE can use this

error file to give automatic error-finding. Most linker errors are also copied into CBE.ERR.

LINKER errors are described

page 84.

B.3

Assembler errors

Empty file

The assembler couldn't read even the first line of the given source code file.

EOF while in Macro Definition

The file ended while a macro was being defined; you should end the last macro definition

properly with a MEND statement.

Couldn't return to old place in source file 'X.asm'

error number

name of the program that handled the error

name of the file where the error was found

line number in the file

string describing the error

prog.asm(10): as2 : Error 50 : Doubly defined label 'fred'

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