Question about defining a Custom component in Sopc builder

hey, sorry for leaving you alone.

actually, customaddress[0] is not memory, this is customIP itself.

as long as you don't do anything in customaddress[0], it returns unstable value(normally zero).

but it returns 0x10 which means this customIP stores value and returns the value again as HDL logic.

printf shows the value to your console.

once you get how to send / receive data to customIP, you can send data to your hardware logic. also get result from it as easy as writing C-source.

but also you get result as fast as FPGA's limitation.

do you think my description get what you want?