BOSTON (AP) — A man accused of wounding two drivers when he fired at least 70 rounds from an assault-style weapon on a busy street near Boston pleaded not guilty Thursday to assault and other charges. Tyler Brown, 46, who appeared in Cambridge District Court via video from a hospital bed, did not speak and appeared to have his eyes closed for most of the brief hearing. He nodded when the judge said not guilty pleas had been entered on his behalf to charges of armed assault with intent to murder and six other charges, including possessing a gun without a license. Judge David Frank ordered him to remain in custody, either at the hospital or in jail, pending a hearing on May 21. Brown’s attorney, Carolyn McGowan, declined to speak at the hearing other than answering the judge’s questions about scheduling matters. The Committee for Public Counsel Services/Public Defender Division, where she is listed as a senior trial counsel, did not respond to a request for comment.…