not able to use SDM with a 2600?

I thought I read somewhere that this could work but now I cannot do it?
is it possible to configure a 2600 router to work with SDM, or will i need to use GNS3 to practice with SDM?
any help
thank you very much
is it possible to configure a 2600 router to work with SDM, or will i need to use GNS3 to practice with SDM?
any help
thank you very much
Comments
No telling if SDM will still work on an "unsupported" router. Can't remember if I tried getting SDM on my 2610 or not.
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I think that xm IOS may work?
You can not put a 2600xm IOS on a 2600.
Actually you can. But not through a standard way.
Booting XM Images on Non-XM 2600 Series Routers | INE
As for SDM, just use Dynamips with an XM image.