The four-bit bipolar microprocessor slice is designed as a high-speed cascadable element intended for use in CPU's, peripheral controllers, programmable microprocessors and numerous other applications. The microinstruction flexibility of the AMD2901 will allow efficient emulation of almost any digital computing machine.
Most small processors today are being designed using a technique called microprogramming. In micro programmed systems a large portion of the systems control is performed by a read only memory (usually PROM) rather than large arrays of gates and flip-flops. This technique frequently reduces the package count in the controller and provides a highly ordered structure in the controller, not present when random logic is used moreover, microprogramming makes changes in the machines instruction set very simple to perform-reducing the postproduction engineering costs for the
system substantially.
system substantially.
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