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216262SI1994

Category: resident utilities

INT 21 - ENVLOCK - INSTALLATION CHECK

	AX = 6262h
	SI = 1994h
Return: AX = 1994h if installed
	    ES = ENVLOCK's resident segment
Notes:	to deactivate ENVLOCK, zero out the byte at ES:[0102h]
Program: ENVLOCK is a TSR by Alexander Yanovsky that forces other TSRs to
	  deallocate their environment when they stay resident

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