Summary of I/O Operations eV+Language User's Guide, v2.x, 18318-000 Rev A Page 158 Keyword Type Function FEMPTY PI Empty any internal buffers in use for a disk file or a graphics window by writing the buffers to the file or window if necessary. FOPENR PI Open a disk file for read-only. FOPENW PI Open a disk file for read-write. FOPENA PI Open a disk file for read-write-append. FOPEND PI Open a disk directory for read. FSEEK PI Position a file open for random access and initiate a read operation on the specified record. GETC RF Return the next character (byte) from a device or input record on the specified logical unit.
IOSTAT RF Return status information for the last input/output operation for a device associated with a logical unit. PROMPT PI Display a string on the system terminal and wait for operator input. READ PI Read a record from an open file or from an attached device that is not file oriented. RESET PI Turn off all the external output signals. SETDEVICE PI Initialize a device or set device parameters. (The actual operation performed depends on the device referenced.) SIG RF Return the logical AND of the states of the indicated digital signals.
SIG.INS RF Return an indication of whether or not a digital I/O signal is configured for use by the system, or whether or not a software signal is available in the system. SIGNAL PI Turn on or off external digital output signals or internal software signals.