Bus switch coupling for series-coupled address bus sections in a

Details Bus switch coupling for series-coupled address bus sections in a Bus switch coupling for series-coupled address bus sections in a

1975-09-17

1977-04-05

Springborn, Harvey E.

Communications: electrical

Digital comparator systems

G06F 920

Patent

active

040165469

ABSTRACT:
A microprocessor includes a data bus and an address bus. The address bus has first and second sections coupled together in series by bus switch circuitry. The microprocessor also includes control circuitry for controlling various data transfers in the microprocessor. The bus switch circuitry includes a plurality of MOSFETs each having their gate electrodes coupled to the control circuitry and having their sources and drains coupled to corresponding bus conductors of the first and second sections of the address bus. A program counter, incrementer and other working registers are coupled between the address bus first section and the data bus. An accumulator register and an arithmetic logic unit are coupled between the second section of address bus and the data bus.

REFERENCES:
patent: 3391394 (1968-07-01), Ottaway et al.
patent: 3462742 (1969-08-01), Miller
patent: 3702988 (1972-11-01), Haney et al.
patent: 3757306 (1973-09-01), Boone

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