void Flush(void) {
    //! calculate delta
    u32 delta = (gMidi.gTick - gTick) * 24/gMidi.gDiv;
    //if(!delta) return;

    //! update tick position
    gTick += delta * gMidi.gDiv/24;

    //! flush chan cmds
    if(gVol&0x80) PushCmd(0x82, 1, (u8[]) {gVol &= 0x7F});
    if(gExp&0x80) PushCmd(0x83, 1, (u8[]) {gExp &= 0x7F});
    if(gPan&0x80) PushCmd(0x84, 1, (u8[]) {gPan &= 0x7F});
    if(gBnd&0x80) PushCmd(0x85, 1, (u8[]) {gBnd &= 0x7F});

    //! flush song cmds
    if(gBRn&0x80)  PushCmd(0x88, 1, (u8[]) {gBRn &= 0x7F});
    if(gMidi.gTmp&0x800) {
        PushCmd(0x86, 1, (u8[]) {gMidi.gTmp &= 0xFF});
    }

    //! flush note off
    for(u32 i=0;i<gNoteOff.size();i++) {
        PushCmd(0x81, 1, (u8[]) {gNoteOff[i]});
    } gNoteOff.clear();

    //! flush note on (and patch set)
    for(u32 i=0;i<gNoteOn.size();i++) {
        u32 dat = gNoteOn[i];

        //! patch set or note on?
        if(dat & 0x80) {
            PushCmd(dat, 1, (u8[]) {dat>>8});
        } else PushCmd(0x80, 2, (u8[]) {dat, dat>>8});
    } gNoteOn.clear();

    //! push delta
    while(delta >= 96) {
        PushCmd(0x90+96, 0, 0);
        delta -= 96;
    } if(delta) PushCmd(0x90+delta, 0, 0);
}