Yamaha CS1x Owner's Manual - Page 57

2. SYSTEM MESSAGES System messages are the data related to the overall system of the device. 2.1 System Exclusive Messages System Exclusive messages control various functions of the CS1x, including master volume and master tuning, tone generator mode, effect type and various other parameters. 2.1.1 General MIDI Mode On When General MIDI mode on is received, the tone generator mode will be changed to XG mode. When this happens, the CS1x will receive the MIDI messages which are compatible with GM System Level 1, and consequently will not receive NRPN and Bank Select messages. Since approximately 50ms is required to execute this message, be sure to leave an appropriate interval before the subsequent message. F0 7E 7F 09 01 F7 (Hexadecimal) 2.1.2 Master Volume When received, the Volume MSB will be effective for the System Parameter. F0 7F 7F 04 01 ll mm F7 (Hexadecimal) * mm(MSB) = appropriate volume value, ll(LSB) = ignored 2.1.3 XG System On When this data is received, the CS1x will switch to XG mode and all the parameters will be initialized accordingly, and XG-compatible messages such as NRPN and Bank Select messages can be received. Since approximately 50ms is required to execute this message, be sure to leave an appropriate interval before the subsequent message. F0 43 1n 4C 00 00 7E 00 F7 (Hexadecimal) *n = device number TG300B Reset F0 41 1n 42 12 40 00 7F 00 41 F7 (Hexadecimal) *n = device number 2.2 Active Sensing (Receive only) Once FE (Active Sensing) has been received, if no MIDI data is subsequently received for longer than an interval of approximately 300msec, the CS1x will perform the same function as when All Sounds Off, All Notes Off, and Reset All Controllers messages are received, and will then return to a status in which FE is not monitored. Refer to the MIDI Data Format in the "Data List" book for more information on the various messages. 56