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Function Call 4Eh Overview
LIM Function Call 15 (AH = 4Eh)
Gets or sets the contents of the EMS page-mapping registers on
the expanded memory boards. This group of four subfunctions is
provided for context switching required by operating environments
and systems. These functions are upward and downward compatible
with both EMS and EEMS 3.2; in addition, these functions now
include the functionality of EEMS function 6Ah ("function 43")
involving all pages. The size and contents of the map register
array will vary from system to system based on hardware vendor,
software vendor, number of boards and the capacity of each board
in the system. Note the array size can be determined by function
4Eh/03h. Use these functions (except for 03h) instead of
Functions 8 and 9 if you need to save or restore the mapping
context but don't want (or have) to use a handle. |