The lft interface impacts the following components:
The lft interface is a pseudo device driver. Consequently, the system configuration process does not detect the lft interface as it does an adapter. The system provides for pseudo device drivers to be started through Config_Rules. To start the lft interface, use the startlft program.
Beginning with AIX Version 4.1, a display device driver is required for each supported display adapter.
The display device drivers provide all the standard interfaces (such as config, initialize, terminate, and so forth) required in any AIX Version 4.1 (or later) device drivers. The only device switch table entries supported are open, close, config, and ioctl. All other device switch table entries are set to nodev. In addition, the display device drivers provide a set of ioctls for use by AIXwindows and diagnostics to perform device specific functions such as get bus access, bus memory address, DMA operations, and so forth.
The Rendering Context Manager (RCM) is a loadable module.
Note: Previously, the hft interface provided AIXwindows with the gsc_handle. This handle is used in all of the aixgsc system calls. The RCM provides this service for the lft interface.
To ensure that lft can recover the display in case AIXwindows should terminate abnormally, AIXwindows issues the ioctl to RCM after opening the pseudo device. RCM passes on the ioctl to the lft. This way, the close function in RCM is invoked (Because AIXwindows is the only application that has opened RCM), and RCM notifies the lft interface to start reusing the display. To support this communication, the RCM provides the required ioctl support.
Diagnostics and other applications that require access to the graphics adapter use the AIXwindows to lft interface.
Locale Overview for System Management in AIX Version 4.3 System Management Guide: Operating System and Devices.
Understanding the Japanese Input Method (JIM) in AIX General Programming Concepts: Writing and Debugging Programs.
Understanding the Korean Input Method (KIM) in AIX General Programming Concepts: Writing and Debugging Programs.
Understanding the Traditional Chinese Input Method (TIM) in AIX General Programming Concepts: Writing and Debugging Programs.
The iconv command.