How to get very old 3c905b with iPXE to work?

[NiKiZe]

The only way you will be able to do anything useful is if you clone the iPXE git repo and then build it yourself.

so

Code:

git clone git.ipxe.org/ipxe.git
cd ipxe/src
make bin/10b79055.iso

This is mostly as described at http://ipxe.org/download#source_code

if you are putting it on usb with dd use make bin/10b79055.usb and dd that instead.

Your embedded script does exactly the same thing as autoboot which is run automatically if you have no embedded script, the only difference is that there is no retry with autoboot.
But start with generic, default options build to make it easy to reproduce.

If you get that working, then you can move to building roms instead, the actual command you used to build your failing rom (similar to above) is what we need to be able to help you.

See the .rom and .mrom options as described at: http://ipxe.org/appnote/buildtargets#boot_type