David Jacobs, the creator of CBS primetime series “Knots Landing,”and “Dallas” has died. He was 84.Jacobs, who battled Alzheimer’s for several years, died Sunday at Providence Saint Joseph Medical Center in Burbank. His son Aaron confirmed to Variety the news of his death.Jacobs created the original soap opera “Dallas,” which aired for 14 seasons from 1978 to 1991, and its reboot series of the same name that aired between 2012 and 2014. He was also the creator of the “Dallas” spinoff series “Knots Landing,” which debuted in 1979 and ran for 14 seasons until 1993. Host James Lott Jr remembers him and plays a scene that was a crossover between both shows!