THE PROCEDURE WILL WORK ON ALL VERSIONS(?) OF THE NEXT CUBE HARDWARE.
ALL I KNOW IS THAT IT WORKED ON THE NEXT CUBE I WAS WORKING ON!!!! SO BEWARE. Here we go! I’ll first provide a description of the hardware I was using and comment on what I accomplished and how I got the information on how to do it! The hardware included a NeXT cube with 660 MB drive, OD, etc., a 68040 upgrade board, and a 68030 motherboard. I successfully installed both the 68040 and 68030 boards on a SINGLE NeXT cube and linked them together through their ethernet ports. The 68040 was configured as a boot server and the 68030 was used as its client (booting off the network for lack of an additional hard drive). The procedure reconfigures slot #2 on the cube’s back-plane as slot #0. This provides two slots configured as #0, required for booting the two motherboards. Once I determined what the slot pin-outs were (thanks to my good friend John Chmielewski), it was a matter of time before the two boards happily co-existed.
