Address Mapped Input/Output Interface
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10
This description relates to a method to interface Universal Controller (UC) architected adapters to a general-purpose 16-bit processor. Because of the availability of inexpensive 16-bit processors, it is desirable to be able to attach existing devices by matching the UC/IO interface. Emphasis is on performing an IO (input/output) operation in one processor instruction cycle.