Mega Flash ROM

I would like to make the msx 2 hb f9p internal software roms that storing in the Mega Flash ROM and executing it

BUt dont know how to do it. who can help me bout this.

(sort kind of manual or/and who tried this one?)

(It must be the same as using like the orginal msx2 system hb f9p computer when the system starts with the internal software memovision)