Int 21/AX=251Fh

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Phar Lap 386/DOS-Extender VMM - EXHANGE TWO PAGE-TABLE ENTRIES

AX = 251Fh
BL = address type
00h linear address
ECX = linear address of first page table entry
EDX = linear address of second page table entry
01h pointer
ES:ECX -> first page table entry
ES:EDX -> second page table entry

Return:
CF clear if successful CF set on error EAX = error code 09h invalid address or NOPAGE option set 82h not compatible with DPMI

See Also: AX=251Dh - AX=251Eh

Category: DOS Extenders - Int 21h - P

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