All – I’ve been struggling recently getting any kind of x86-type system running on the S100. I have a mix of boards, but couldn’t get any to get me to a “boot”. Rich Camarda has a bunch of boards on eBay, so I emailed him to get confirmed jumper settings. To start, this is what I had in my system: CompuPro 86/87, RAM22, Disk 1, and the System Support board. While I don’t have a CompuPro diskette, I at least wanted to get the boot sequence to work. Nothing would work, even pared down to the troubleshooting-minimum from the manual (the CPU and Disk 1). For the drives, I’m using modified YD-380 PC/AT drives to replace 8” as I do on my IMSAI. I have an SCP 8086 board so I swapped it for the 86/87 board and now I get the boot activity (drive access, pause, drive access, etc.) per the description in the manual. Not sure what’s wrong with the 86/87 board I have (was bought “working” but who knows), so if there’s an expert out there, please contact me off-list. I also have a few Z80 processor boards I wouldn’t mind trading for the CompuPro Z80 CPU card. Also contact me off-list for that. Next up is getting something bootable going. Thanks! Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32