module memory for expansion of memory base, for example, personal computer (pc).

摘要

the subject of the invention is a form of memory expansion of base, for example, personal computer (pc) based on the use of memories of waste containing only half that contains locations.nit of defects, characterized by the fact that includes two memories of type t (m3, m4) having the upper half and two memoirs of type b (m,m2) of the lower half of the lease without defects, as well as a standard memory (m11) for verification of equality, and by the fact that between the lines of classical signals as,ras and w and the feet of w and oe of these memories (m1, m2, m3, m4) is included in a logical derivation circuit for enabling / disabling the management of access to those memories.comprising an inverter (inv), a flip - flop (ff1) and four doors or (or1, or2, or3, or4).