[Postosuchus]

I don't think VAX emulators were the thing back then. :-) In fact, our target platform was a cluster of commodity DEC Alpha machines running an early version of RedHat Linux for AXP. I know for a fact, that we were the first system that employed Linux clusters in fintech.

[ggm]

They weren't but .. if you were doing it now QEMU and OpenVMS would probably be the natural approach.