Heavy D -- Brother Seeks Control of Late Rapper's Estate

Heavy D's brother is seeking control of the late rapper's estate -- what's left of it -- via an old will that earmarks nothing for D's 13-year-old daughter, parents or other siblings ... according to documents obtained by TMZ.

Floyd Myers, D's brother and former business manager, filed docs in L.A. County Superior Court last week ... claiming Heavy wrote a will in '99 and lost it years ago ... but insists D gave him a copy.

Interestingly, the will Floyd wants the court to honor specifies that all of Heavy's assets should go to Floyd (keep in mind, Heavy apparently signed off on that will BEFORE his daughter was born).

So what's left of Heavy's estate? The rapper only had $320,000 in listed assets (but there could be more $$$ in future royalties and other bank accounts that haven't been discovered yet).

But Floyd's lawyer tells TMZ ... it's all good with D's extended family ... the filing is a formality to clear title on a condo the brothers co-owned so Floyd can sell it. We reached out to several immediate family members ... no one's gotten back.

HD died in November 2011 from a pulmonary embolism at age 44 ... as TMZ first reported.