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AX = 4602h
Return:
???
Note: The DOS 5+ kernel intercepts this function and copies the previously-saved MCB from the DOS data segment into the MCB following the caller's PSP memory block; in conjunction with AX=4601h, this intercept is used by DOS to avoid corruption of the Windows real-mode heap's end sentinel
Category: DOS Kernel - Int 2Fh - M
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