I am pretty sure that I paid something like $300 for the XACT software in 1986. It would be really educational to have students play around with it today. You c

I am pretty sure that I paid something like $300 for the XACT software in 1986. It would be really educational to have students play around with it today. You could edit the bits in the LUTs directly and see the equations change in the bottom pane, or you could edit the equations and see the LUT bits change. One fun thing was the mode where as you routed a signal it would show the delay so far, so you could backtrack and try a different path to see if it would be faster. The 2064 had 8x8 = 64 configurable blocks, but many people would assume it would be equivalent to a 64 NAND gate array. So for the next chip they decided that it would be better to use "equivalent gates" in the name, so 2018 would be able to replace an "18" gate array.