Mac OS won't run on it (though it would be interesting to try OS X with some workarounds by installing it on a 9500 first and rumor has it that some people have managed to get it boot 7/8/9 by swapping ROMs), and apparently it is even difficult to install Linux!
Can't be done, unless the ROM one means is a special, never-released ROM especially made to allow the ANS to boot the Mac OS.
The Open Firmware in these machines does not dynamically allocate interrupt signals. The interrupt assignments are fixed in the firmware.
The ANS has interrupts assigned differently than one would find in the PM9500. So, if one attempted to boot an ANS with a PM9500 ROM, it would work up to the point where the machine attempted to service one of the interrupts which is connected differently on the ANS from the PM9500.
Now, a 9500 ROM with the interrupt assignments rewritten should work--and if one could add drivers for the on-board F&W SCSI chips and built-in video that would be even cooler.
BTW, if anyone ever runs across that special ROM, or someone who has one of those special ROMs, please let me know. I have the means to copy it into shiny new ROM modules, which will plug into the stock ROM slot.