A_FXRT2
A_FXRT2, A_SENDAMOUNTS, A_FXRT1,
A_FXRT2, 0x07060504,
A_FXRT2, snd_emu10k1_compose_audigy_fxrt2(route),
A_FXRT2, snd_emu10k1_compose_audigy_fxrt2(send_routing),
val1 = snd_emu10k1_ptr_read(emu, A_FXRT2, idx);