PHILADELPHIA (AP) - Lawyers for Bill Cosby tried again Friday to have his criminal sex-assault case dismissed, asking an appeals court to consider whether Cosby had a binding agreement that he would never be charged.

Defense lawyers argue that Cosby had a promise from a former prosecutor that he wouldn't be charged over the 2004 encounter with a Temple University employee and should therefore testify in the woman's civil lawsuit.He did, in a deposition unsealed last year that prompted a new prosecutor to reopen the case before the 12-year statute of limitations expired. Cosby said under oath that he gave the accuser three pills before engaging in sexual contact that he called consensual. He also acknowledged getting prescriptions for Quaaludes so he could give them to women he hoped to seduce.Montgomery County District Attorney Kevin Steele filed felony sexual assault charges against Cosby in late December, based on new evidence that included deposition testimony and dozens of other accusers who have come forward.Cosby has denied wrongdoing.