Unable to boot due to illegal DRAM configuration

Unanswered Question

Hi all. I just upgraded a 3640 to 128NVRAM and upgraded flash from 16MB to 32MB.


I am getting Unable to boot due to illegal DRAM configuration on bootup.


Any ideas?


rommon 2 > meminfo


Main memory size: 48 MB in 32 bit mode.

Available main memory starts at 0xa000e000, size 49096KB

IO (packet) memory size: 0 percent of main memory.

NVRAM size: 128KB

rommon 3 > meminfo -l


Supported 64 bit configurations:


SIMM 0 SIMM 1 SIMM 2 SIMM 3

--------------------------------------

4M 4M 4M 4M

8M 8M

8M-DUAL 8M-DUAL

8M 8M 4M 4M

8M-DUAL 8M-DUAL 4M 4M

8M 8M 8M 8M

8M 8M 8M-DUAL 8M-DUAL

8M-DUAL 8M-DUAL 8M 8M

8M-DUAL 8M-DUAL 8M-DUAL 8M-DUAL

16M 16M

16M 16M 4M 4M

16M 16M 8M 8M

16M 16M 8M-DUAL 8M-DUAL

16M 16M 16M 16M

32M-DUAL 32M-DUAL

32M-DUAL 32M-DUAL 4M 4M

32M-DUAL 32M-DUAL 8M 8M

32M-DUAL 32M-DUAL 8M-DUAL 8M-DUAL

32M-DUAL 32M-DUAL 16M 16M

32M-DUAL 32M-DUAL 32M-DUAL 32M-DUAL


Supported 32 bit configurations:


SIMM 0 SIMM 1 SIMM 2 SIMM 3

--------------------------------------

4M

4M 4M

4M 8M

4M 16M

4M 4M 4M

4M 4M 8M

8M

8M 4M

8M 16M

8M 8M 4M

8M 8M 8M

8M 8M 16M

8M 8M 4M 8M

8M 8M 8M 4M

16M

16M 4M

16M 8M

16M 16M 4M

16M 16M 8M

16M 16M 16M

16M 16M 4M 8M

16M 16M 4M 16M

16M 16M 8M 4M

16M 16M 8M 16M

16M 16M 16M 4M

16M 16M 16M 8M

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Giuseppe Larosa Mon, 10/13/2008 - 11:18
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Hello,

your router sees only


Main memory size: 48 MB in 32 bit mode.

Available main memory starts at 0xa000e000, size 49096KB

IO (packet) memory size: 0 percent of main memory.

NVRAM size: 128KB


what memory chips are you using ?

your only chance to reach 128MB is to use 4 32MB chips with 64bit mode:


32M-DUAL 32M-DUAL 32M-DUAL 32M-DUAL


Hope to help

Giuseppe


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