Int 2F/AX=1210h

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DOS 3.0+ internal - FIND UNREFERENCED DISK BUFFER

AX = 1210h
DS:DI -> first disk buffer to check

Return:
ZF clear if found DS:DI -> first unreferenced disk buffer ZF set if not found

Note: In DOS 5+, this has become essentially a NOP, invoking the same code used by AX=1224h (SHARING DELAY)

See Also: AX=120Eh

Category: DOS Kernel - Int 2Fh - D

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