CXBEAC0 M7855 Bus Tester Module

BEA is an IOMOD that can handle from 1 to 12 UniBus exercisers. The module will have the VBE(s) doing DATI(s), DATOB(s), DATIP(s), and DATO(s), then checks for correct data transfers. These transfers are done first on an NPR level and interrupts with a BR7, then the request is sequentially lowered to a BR4.