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I am a teacher for Project Lead the Way and my course is Digital Electronics. In the course we use the CMOD S6 for about half of the course. Typically we use a program called Multisim to create circuits in what is know as PLD mode (Programmable Logic Device) and we export those programs via USB to the CMOD S6 that is attached to a specialty breadboard that can provide power, buttons, switches, etc. My issue is that I cannot find any documentation about what each of the 48 pins can be used for. We are told 24 and 25 are power and ground and we should use PIO14 to hook up an external clock but no reason is ever given as to why. Some of our logic programs only work if we use higher numbered pins and not lowered numbered ones. Some programs work with the onboard buttons, some programs can't use them. I am sitting in a class with 20 people trying to figure these nuances out and it all guess work. The product literature talks of multiple clock (signal voltage) outputs but not how to get them or how to change their frequency. Can anyone point me in the correct direction? Thanks, Tom Lum