NAME
    WaitForChar -- Determine if chars arrive within a time limit

SYNOPSIS
    status = WaitForChar( file, timeout )
    D0                    D1    D2

    BOOL WaitForChar(BPTR, LONG)

FUNCTION
    If a character is available to be read from 'file' within a the
    time (in microseconds) indicated by 'timeout', WaitForChar()
    returns -1 (TRUE). If a character is available, you can use read()
    to read it.  Note that WaitForChar() is only valid when the I/O
    stream is connected to a virtual terminal device. If a character is
    not available within 'timeout', a 0 (FALSE) is returned.

BUGS
    Due to a bug in the timer.device in V1.2/V1.3, specifying a timeout
    of zero for WaitForChar() can cause the unreliable timer & floppy
    disk operation.

INPUTS
    file - BCPL pointer to a file handle
    timeout - integer

RESULTS
    status - boolean

SEE ALSO
    read(), fgetc()