NMI on Malta board with MIPS core

Hi ,

I am working on MIPS platform.

I recently received a new MIPS32-4Kc 200 MHz core board, and i am facing problem with it.

I already have two Malta (rev-10) working boards, one (old) with

I tried the 200MHz core board on both the Malta boards, by replacing the existing cores on them.

When we power-up the board, it is comming properly upto the boot loader YAMON prompt, and also able to download the Linux kernel file on to the board.

But the problem is, 1. it is getting restarted while the OS is booting-up on old Malta board 2. it is getting NMI (non-maskable interrupt) while the OS is booting-up on new Malta board

Details:

MIPS core : A) Processsor: MIPS 4Kc-HC-3.7 SMIC.18 Rev 01 CMSC, INC BP0321.07

B) System controller: GT-64120A-B-2

C) Crystal : 100 MHz

D) SDRAM: 64 MB - PC100

can anyone help me to get out of this problem. Thanks in advance.

regards Raju