Stratix 10 E-tile Transceiver Native PHY : questions with "altera_xcvr_rcfg_10_reconfig_parameters.m

Hi,

Some questions about the "altera_xcvr_rcfg_10_reconfig_parameters.mif" file:

1.What if the bits of the registers that are not written to are not used?

for example :

00F : 00013C000; -- [34:16]-DPRIO address=0x013; [15:8]-bit mask=0xC0; [7:7]-

hssi_xcvr_rxfifo_wr_full=prevent_wr_rx_fifo_full(1'h0); [6:6]-

hssi_xcvr_rxfifo_rd_empty=prevent_rd_rx_fifo_empty(1'h0);

if data[5:0] are unsed,Writing these bits has no effect?

2.Can you give the description of an unlisted address, such as 0xe8?

Thank you