I am working on the Motorola MVME147 right now as I got hold of a ROM set. It has support for the MVME350 tape controller that I have already dumped so in theory I can put together everything and boot from tape over the VME bus when I am done.
I could need some help making the outline of the VME slot device, I have not figured out the best way of doing that yet, it always stumbles on my top down view on MAME, I need more understanding of the bottom part, by time or someone contribute a design, I can implement though. Once established I can populate all the boards with it.
Is there a ROM dump of the ISCSI-1 somewhere?