Int 2F/AX=122Bh

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DOS 3.3+ internal - IOCTL

AX = 122Bh
BP = 44xxh
SS = DOS DS (must be using a DOS internal stack)
additional registers as appropriate for INT 21/AX=44xxh

Return:
As for INT 21/AH=44h

Notes: Equivalent to INT 21/AH=44h, but may only be called when already inside a DOS function call. Sets user stack frame pointer to dummy buffer, moves BP to AX, performs IOCTL, and restores frame pointer. Used by NLSFUNC in accessing COUNTRY.SYS when invoked by the DOS kernel

See Also: INT 21/AH=44h

Category: DOS Kernel - Int 2Fh - D

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