The University of Texas says former football coach Darrell Royal, who won two national championships and a share of a third, has died. He was 88.

Royal suffered from Alzheimer's disease and recently fell at an assisted living center where he was receiving care.

Royal coached Texas from 1957-1976, won 11 Southwest Conference titles and introduced an innovation known as the wishbone offense to major college football in 1968. He led the Longhorns to two national championships in 1963 and 1969, plus a share of a third in 1970.