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Return:
ES = segment of display buffer
Desc: Determine the address of the virtual screen to which the program should write instead of the actual video memory, so that the multitasked programs do not interfere with each other's output
Note: The display buffer may be moved if multitasking is enabled
See Also: INT 21/AH=ECh"DoubleDOS" - INT FB"DoubleDOS"
Category: DOS-Based Task Switchers/Multitaskers - Int FCh - D
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