________________________________ Here's one website that talks about the ACE Discovery computer. Looks like the Discovery 1600 came before the Discovery 500. http://classictech.wordpress.com/tag/action-computer-enterprise/ The front card in the system, the CPZ 4800 was made by Intercontinental Micro Systems, it would be considered the master processor and the other's slave processors. The manual for the 4800 can be found here: http://www.s100computers.com/Hardware%20Folder/IMS/CPZ4800/CPZ%204800%20Boa…