T4D_RCI          1283 sound/pci/trident/trident_main.c 	outb(((voice->number & 0x3f) | 0x80), TRID_REG(trident, T4D_RCI + voice->foldback_chan));
T4D_RCI          2050 sound/pci/trident/trident_main.c 	outb(0x00, TRID_REG(trident, T4D_RCI + voice->foldback_chan));