Sequential Circuits Prophet-5 Service Manual - Audiofanzine

I9-10 STATUS 6: INITIALIZE SEQ LOWER PROGRAMThis status byte ^O(H) was inherited from the Prophet-iO but should not be sent to theProphet-5.9-li STATUS 9: DISABLE TUNECode 09(H) isused to disable the Prophet*s TUNE switch. An ideal application would befor the sequencer to disable TUNE before executing a LOAD FROM TAPE operation(STATUS ^).9-12 STATUS A: ENABLE TUNECode OA(H) reverses STATUS 9, to allow the Prophet to be tuned. This code doesn'tstart the TUNE routine, it just enables you to hit the switch.9-13 STATUS B: RECEIVE PROGRAM CHANGECode OB(H) prepares the Prophet to change programs, without the Prophet sending anACK as with STATUS 1. The program byte has the format described under STATUS 0,and should follow STATUS B after 2 milliseconds. If it arrives before 2 ms, an overrunerror may occur. If it doesn't arrive within ^ ms, the Prophet will then expect to bereceiving status bytes again.9-U STATUS C: SYSTEM CONNECTThis status byte is best used for initial testing of your system hardware. The Prophetresponds to code OC(H) by sending an AA(H). The sequencer thus learns that the Prophetis connected and listening.9-15 STATUS E: RECEIVE SHORT KEYBOARD DATAThis status byte is similar to STATUS 1, except that the keyboard data is limited toseven bytes (56 notes), and there is no program byte. There is also no ACK. In short, thesequencer ideally sends code OE(H), waits 2 ms, then sends seven bytes at iOO-usintervals. There is a ^-ms timeout.9-6TM1000D.2 10/81