A San Francisco police officer says he has the right to know whether a man accused of biting him suffers from AIDS, but a defense attorney contends that it would be illegal to require a blood test. A Municipal judge continued until next week a hearing on a city prosecutor’s request to force Lyle Julius, 26, to take a test to determine whether he has the acquired immune deficiency syndrome virus. “He (Julius) announced that he has AIDS after he allegedly bit a San Francisco police officer three times,” Assistant Dist. Atty. Bob Moore said. If Julius does have AIDS and knew that when he bit Officer Tom Cady last November, “it could mean more serious charges,” such as felony assault, Moore said. But Gordon Armstrong, chief trial attorney in the city’s public defender’s office, said the state Health and Safety Code requires a subject’s written consent before administering a test for AIDS.