Etherboot

anyone know all a place that lists the available parameters when using mknbi-linux to make the etherboot image? I know of "install=" and "autoyast=" but am not sure of others. 

thanks
marshall

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I need to create *.com files but I am having problems with the ones I've
created.  This is what happens: (using 3c90x.com)
Machine boots, 3c90x.com loads, image comes down and then the problem
starts.
After the image is received, the screen displays:
Issuing Reset
mknbi 1.26

and then nothing happens. It doesn't matter which *.com file I create.
Help!!!

What could I be doing wrong?