Lucky you - I have been looking for an SPC-16 for some time now. And there's precious little information on the web. These were popular in Europe in the industrial arena. You may know all this already, but here's the little bit I remember from using these systems. IIRC they are 16-bit systems; the systems I used ran RTOS booted point I believe Tripos was also available. We used these systems extensively at Ford Motor Company plants across Europe as the controllers for engine (dynamometer) testing, vehicle exhaust emission analysis and electrical checkout. In fact I first came to grips with assembly language programming on the SPC-16. Back in the '70's someone at Ford wrote a real-time executive for these systems called the Ford Executive and Control Program which was only used at run-time to support the test applications I was writing, so development was interesting: I'd boot from RTOS, edit and assemble my code; transfer to a bootable 8" disk containing FECP; then reboot from the diskette and attempt to test. Last time I used these systems was in the late '80s, and at that time General Automation was still in business. I don't think they're around now. Sorry that I don't have much more concrete information on the hardware to share with - looking back over what I wrote it's only personal experience stuff - but sometimes a little context is useful on these systems. I came across a reference to these machines in the Technical Library at work recently, comparing them performance-wise to other minis of the same era. If you're interested I'll copy the relevant pages and send them to you. Regards, Dave