Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 UW 5/3/83; site uw-beaver Path: utzoo!watmath!clyde!burl!ulysses!cbosgd!cbdkc1!desoto!packard!hoxna!houxm!vax135!cornell!uw-beaver!info-mac From: info-mac@uw-beaver (info-mac) Newsgroups: fa.info-mac Subject: Musical mac Message-ID: <1795@uw-beaver> Date: Wed, 26-Sep-84 16:59:40 EDT Article-I.D.: uw-beave.1795 Posted: Wed Sep 26 16:59:40 1984 Date-Received: Thu, 4-Oct-84 02:10:16 EDT Sender: root@uw-beave Organization: U of Washington Computer Science Lines: 13 From: Gustavo FernandezMy problem is not with discontinuities across notes but with the sound driver stoping and restarting between assynchronous I/O calls. My envelop makes sure that both beginning and ending are at $80 (00 on a unipolar DAC like on the MAC) Is there a way to switch buffers on the fly using the ROM sound driver in free-form mode Has Anyone tried to drive the sound buffer directly? My main question is how to write the interupt service routine so that the soound buffer is neither over-run or under-run. Gus Fernandez FERNANDEZ@SU-SCORE -------