To all with interest in preservation

Having installed my (currently case-less) R-Pi on top of the Sun U5, VAX 4K and Sun U2 pile, I know it's (non-existent) rack won't crush my other three machines. It's also going to consume virtually no power so I can leave it running 24x7 with no issues. If I can find the time to actually spare to recover the VAX 4K's system disk, it's also (probably) going to be much quicker to cluster it to a simulated VAX on the R-Pi and fix it up that way. (I could use a VAX in the garage to do that but I'd have to get it out first and set it up: given that the bottleneck is the lack of "tuits" rather than hardware and that the end goal is to have the real VAX running, I'm going to claim that this is fine :-)). Briefly looking at the R-Pi, it at least party meets your goals of maintainable. The hardware schematics are online, the parts are (at least mostly available): the parenthetical qualification is because I don't know whether the broadcom chip is available (I guess not ine onesies ...). I also don't have the kit here to swap that one out. Antonio arcarlini at iee.org