Nvidia Corp., a maker of graphics chips frozen out of Apple Inc. computers, has posted job listings that indicate a better relationship with the world's most valuable technology company. Current Mac computers feature graphics chips from Advanced Micro Devices Inc. Nvidia, which is the leading manufacturer of high-end graphics chips used in gaming machines, hasn't been an option for multiple generations of computer models from Cupertino, California-based Apple. Nvidia, in a job ad for a software engineer, said a successful applicant will "help produce the next revolutionary Apple products." The role would require "working in partnership with Apple" and writing code that will "define and shape the future"' of graphics-related software on Macs. There are three current job listings on Nvidia's database referencing Apple, with the latest one appearing last week.