We’re in the stage where the 8080,8085, Z80, 6502 and 6809 CPUs are all in the market, and the relevant buses are S100, with other buses not yet standardized.

We’re in the stage where the 8080,8085, Z80, 6502 and 6809 CPUs are all in the market, and the relevant buses are S100, with other buses not yet standardized. You either live with what you’re using or you change around and fiddle with things constantly.