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Int 2F Fn 1400 C - Nlsfunc.com - Installation Check [U]
AX = 1400h
Return: AL = 00h not installed, OK to install
01h not installed, not OK
FFh installed
Notes: this function is called by the DOS v3.3+ kernel
supported by OS/2 v1.3+ compatibility box, which always returns AL=FFh
supported by DR-DOS 5.0
documented for MS-DOS 5+, but undocumented in prior versions
See Also: AX=1401h"NLSFUNC",AX=1402h"NLSFUNC"
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