Well, I know it works, 'cause I've done it myself, but it's been awhile. It doesn't work 100% like an original or a Cromemco ZPU, though. After making all the mods to the CPUZ, you have to bring the CPA itself through all its updates if it hasn't been already, then you have to check the buss lines structure between the two boards to ensure are signals are what they should be... especially the ground lines. This last step is because the CPUZ is S-100 IEEE-696 compliant, whereas the CPA was not... John Singleton Subject: CompuPro CPU-Z with IMSAI and Front Panel issues From: Nick Allen <nick.allen at comcast.net> Date: Sun, 17 Oct 2010 00:34:56 -0500 To: cctech at classiccmp.org Anyone have any experience getting the front panel of an IMSAI computer to work with a CompuPro CPU-Z S100 board? I read the documentation (http://maben.homeip.net/static/S100/compupro/cards/CompuPro%20CPU-Z.pdf), and there seems some configuration required, I obviously am missing something as it is not working properly even after I attempt the config in the documentation. If you currently have a board working and can share a photo, or can provide any technical assistance, I would be extremely grateful! Nick