That takes me back in time. I designed the original EISA logic used in the 720, 730, and 750. Those were great machines back in the day, the fastest available when they launched.
This is my favorite part about HN: You have a random story about older tech, and someone who either knew someone involved or was involved themselves is right there to comment on it!
Good job. I caused the purchase of a couple of 720s (I believe they were, plus a few X terminals mooching off the workhorses, all with megapixel color displays). They served well past the demise of then-rival Sun machines. I think one of them was still in use with legacy software a few years ago.
Fun stuff: there was one year that HP-UX got so aggressive about using free RAM for file cache that, when you tried running another program, things would slow to a crawl because it was paging virtual memory to disk ...
