Apparatus for alternatively accessing single port random access memories to implement dual port first-in first-out memory

DETAILED DESCRIPTION It is, therefore, an object of the present invention to utilize conventional single port random access memory to perform the function of dual port FIFO memory.
It is another object of the present invention to increase the speed of operation and reduce the physical size of a large FIFO memory through the use of conventional single port random access memory instead of dual port memory.
These and other objects of the present invention are realized in a dual port FIFO circuit comprising a first bank of single port random access memory, a second bank of single port random access memory, means for sequentially writing every other piece of sequential data to an alternate one of the memory banks, and means for reading each of the memory banks during the period data is being written to the other of the memory banks.
These and other objects and features of the invention will be better understood by reference to the detailed description which follows taken together with the drawings in which like elements are referred to by like designations throughout the several views.