ADR
buf_start = spipe->tregs[ADR];
spipe->tregs[ADR] = SL11_BUFFER_START;
spipe->tregs[ADR] = SL11_BUFFER_END -
slhci_write_multi(sc, spipe->tregs[ADR],
t->current_tregs[0][ADR] = SL11_BUFFER_START;
t->current_tregs[1][ADR] = SL11_BUFFER_END - 8;