ocr: CONTROLOFDATA FLOW (CONT) DEVICE DRIVER COMMANDS DESCHIPTION DATA PACKETS HARDWARE N TERRUPT DEVICE GENERATED AN INTERAUPT, PLAYED POD: GETS GET NEXT BUFFER) CONTROL IN INTEARUPT HANDLER LAST USED a CURRENT INTERAUPT TRANSFER NEXT BUFFER TOI DEVICE CURAENT H, NEXT H CUARENTE HEXT TIME SAVE INDEX JUST USED, INCREMENT SHDReport (LAST USED) OBUTTINDEXES EOI DUCHDHESMA-TMEIE) RETURN STREAM BUFFER HANDLER BACK TO AUDIO USED LAST NEXT CURRENT AUDIOSTREAM HANDLER SENDS ANOTHER BUFFER ENDI OF INTERAUPT HEXT: CUMENT Device OS12 Driver Conterence Figure 4. Data streaming at interrupt time
