------------------------------------------------------------------------------
8. Read a character from the F-ROM file. <Main,Alarm,Comm>
------------------------------------------------------------------------------
[Name]
aux_from_getc
[Syntax]
#include <bios.h>
unsigned int aux_from_getc( void ) ;
[Argument]
------
[Return]
Return the character being read if successful. Returns 0xFF if any
error occurs.
[Description]
This function gets one character from selected data file.
This function replaces line termination code, "Carriage Return + Line
Feed ( CR + LF)", with single Line Feed character LF.
When error occurs or end of file is detected, 0xFF is returned.
Before calling this function, a data file, which data is read from,
must be selected by aux_from_select() function.