Upgrade sdram chip to 16MB for DE2 dev...

Hi hippo

My sdram memory is 8MB that not enough free memory to run some app program on uClinux,and i want to replace it .Recently ,I already find IS42S16800B sdram chip(16MB) that match all pins of IS42S16400 for DE2 board. I can know the pin 36 don't connect to FPGA chip from sdram PCB schematic . So, i only select 16MB for sdram chip, but I have not to buy it yet .

This is diference between the IS42S16400 chip and the IS42S16800B chip,as following:

IS42S16400 sdram chip(1Mx16x4bnaks): ==>8MB

1.Row addr input :A0~A11 (12 bit)

2.Column addr input: A0~A7 (8 bit)

IS42S16800B sdram chip(2Mx16x4banks): ==>16MB

1.Row addr input :A0~A11 (12 bit)

2.Column addr input: A0~A8 (9 bit)

Do you think that i can directly replace it ?

or give me some advices .

Thx !