RLCS_GS
RL_WREG(RL_CS, RLCS_GS|(unit << RLCS_USHFT));
RL_WREG(RL_CS, RLCS_GS|RLCS_IE);
RL_WREG(RL_CS, RLCS_GS|(i << RLCS_USHFT));