TCB
snd_emu10k1_ptr_write(emu, TCB, 0, 0); /* taken from original driver */
TCB, 0,
snd_emu10k1_ptr_write(emu, TCB, 0, 0);
snd_emu10k1_ptr_write(emu, TCB, 0, emu->fx8010.etram_pages.addr);
snd_emu10k1_ptr_write(emu, TCB, 0, emu->fx8010.etram_pages.addr);