RISC_SLOT_O_FIELD
(unsigned long)le32_to_cpu(btv->main.cpu[RISC_SLOT_O_FIELD+1]),
bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,
bttv_risc_hook(btv, RISC_SLOT_O_FIELD, &set->top->top,
bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);