Hrm, just one to be honest, but I've only come across two era (as opposed to my Tandy 1000, which was far later than 808x prime) 808x desktop systems, and since one of them died catastrophically due to exploding battery I figured a good number of them out there had. The one I have that's quite dead is a WPCbridge, a special 8088 with a Trackstar 128 Apple II card in it. Unfortunately I can't get drivers for said card, as the copy protection was too badass for anyone who had the disks back then, and nobody has ripped them more recently. Anywho, the WPCbridge had a big hulking battery the size of a D cell or so, and it kasploded all over the motherboard. Even after intensive cleaning the thing won't power on. Then again, I could always be horribly misremembering (memory is wonky at the ripe old age of 19... *fail*), but I'm pretty sure it was that machine.