Very cool, but there is no way those boards are 24" x 24". As you can see in the photos, there are 24 ICs across the board (along the narrow width of the ICs).

Very cool, but there is no way those boards are 24" x 24". As you can see in the photos, there are 24 ICs across the board (along the narrow width of the ICs). ICs are 0.3" DIPs, and worst case they are 0.5" center to center. Those boards are on the order of 12" x 12". Look at the folders on the shelf behind the cabinet -- those should give one the sense of scale. I recall interviewing an engineer from Data General around 1990 and he described work he had recently done. Data General had designed a workstation around the 68040, but Motorola was way behind schedule. So DG designed a discrete board set that ran the 68040 instruction set and they shipped it. He said it was faster than the production 68040 as well (at that date, anyway).