Sequential read access of serial memories with a user defined starting address

Abstract From the Canadian patent

Circuitry for serial read memory access utilizing a random starting address. Fast read access is provided without upsetting the original data pattern stored in the memory core if the sequential read is terminated in midstream. After the last memory address is reached, the access automatically rolls over to the first address. The circuit provides both random and sequential access functions and allows the memory to be used as a shift register of variable length.