Memory initialization registers reside in the address range 0xfecf0000:0xfecffff but serialice (from git code) shows lines like this: "WARNING: undefined load operation @fecf0000" and "WARNING: undefined store operation @fecf0000" To filter these registers I have edited serialice.lua, then added the following filter to SerialICE_memory_read_filter: if (addr >= 0xfecf0000 and addr <= 0xfecffff) then return false, true, 0 and SerialICE_memory_write_filter: if (addr >= 0xfecf0000 and addr <= 0xfecffff) then return false, true, data So the above filters aren't applied. Help? Idwer