Question on the location of the DRAM HM514270JP IC44 not used & Fram Mode

[chacal231077]

Hi!

I would like to know if it will bring more if IC44 was populated with an HM514270JP ?

Sega-ST-V-Tech-Wiki

And I would like to know if a Fram mode and feasible as on saturn to replace BR6265BF-10SL

Thank you