Programmatically Once an asynchronous device is
properly connected and configured on a HP 3000 Series 900 computer,
it can be accessed programmatically through the MPE/iX File System.
The File System interfaces with the ASC software,
which communicates with the device based on its port configuration.
Your program has only to treat the device as a file a devicefile,
and the computer will handle the actual communication with the device,
including use of the proper protocol. This chapter discusses how
the File System, system intrinsics, and your program can work together
to control an asynchronous device. The following topics are discussed:
An overview of File System functions.
