I have now added a page with illustrations of the HomeVision. These pictures have been pulled from the CSI site in the mean time. I hope to add my own pictures in the future. The new HomeVision page can be viewed here HomeVision
I have also just received the new firmware PROM (version 2.5a). Fitting it was a breeze. This version has a bug fix for a problem that was occurring when using the Dallas Semiconductor temperature probes with the HV expansion board. It also fixed a small problem I was having getting the video system to initialise.