The relationship between Allen and Gates became strained as they argued even over small things. Allen effectively left Microsoft in 1982 after being diagnosed with Hodgkin's lymphoma, though he remained on the board of directors as vice chairman. Gates reportedly asked Allen to give him some of his shares to compensate for the higher amount of work that Gates was doing. According to Allen, Gates said that he "did almost everything on BASIC" and the company should be split 60–40 in his favor. Allen agreed to this arrangement, which Gates later renegotiated to 64–36. In 1983, Gates tried to buy Allen out at $5 per share, but Allen refused and left the company with his shares intact; this made him a billionaire when Microsoft went public. Gates later repaired his relationship with Allen, and the two men donated $2.2 million to their childhood school Lakeside in 1986. They remained friends for the rest of Allen's life.