Its not about the software being independent of the architecture. Its about using diverse hardware platforms to avoid the situation where an un-detected, hardw

Its not about the software being independent of the architecture. Its about using diverse hardware platforms to avoid the situation where an un-detected, hardware-level bug affects the voting ability of all participants. We've seen, time and time again, so-called dependable platforms weaken over the years as more and more issues are uncovered. Diverse voting node architecture requirements are designed to prevent hardware bugs from crashing trains, not software bugs. >Siemens VCP /proven/ .. and yet, it still crashed trains. >What customers want Its not obsolete if a customer wants it. Customers want older CPU platforms because the tooling and industry required to support them in the field is long-entrenched, and costs of upgrading to "newer, sexier CPU's", not really worth it if the lesser platforms are capable of doing the job...