The 2501 isn't going to see more than 16M, did you try it with just one
SIMM? I forget whether it will take 1x16M or only 2x8M...
The problem with these beasts are two, that they take some fixed memory
map like 64M and block out fixed chunks for DRAM, ROM, Flash, IO, etc,
and the memory controller functionality only implelments some fixed
number of DRAM sizes. In some cases, Cisco went a step beyond what
seemed like a "reasonable" max at design time, in others, they wanted
to support minimal configurations (which don't make any sense today)
and and you get a 1-16 range, where 4-64 would be desireable.
George
> From: "Marcelo M. Sosa Lugones" <marcelo@sosa.com.ar>
> To: <cisco-nsp@puck.nether.net>
> Subject: Problem with 2500's
> Date: Sat, 9 Jun 2001 21:55:02 -0300
>
> Today i tried to upgrade 2 2500s (2501 and 2511) cause we have bought some
> memory and wanted to try IOS 12.2 (1 8mb flash and 2 16 dram modules), but
> when i put any 16mb dram module, the cisco sees it as 8mb dram module. I
> have tried in both ciscos with both modules, with no success. The memory is
> Kingston, i don't have the part number right now, but it was something very
> obviusly that it was a 16 megs. Also i looked at the chips and made a search
> on google and it seems to have 16megs, so i am thinking about a hardware
> failure... Any hints?
>
> Thanks,
> Marcelo
>
>
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