Master slave registers for interface adaptor

Details Master slave registers for interface adaptor Master slave registers for interface adaptor

1975-09-17

1977-04-26

Zache, Raulfe B.

Communications: electrical

Digital comparator systems

G06F 300

Patent

active

040204723

ABSTRACT:
An interface adaptor suitable for use in a microprocessor system includes an input register coupled to a bidirectional data bus of the microprocessor system. The interface adaptor includes a plurality of registers, including a control register and a data register, coupled to the input register by means of an internal input bus. Each of the plurality of registers includes flip-flops which are coupled as slave flip-flops to corresponding flip-flops of the input register. The corresponding flip-flops of the input register function as master flip-flops. The interface adaptor also includes register selection logic circuitry for selecting one of the plurality of registers by electrically coupling its slave flip-flop to the corresponding master flip-flops of the input register.

REFERENCES:
patent: 3395392 (1968-07-01), Kulikauskas et al.
patent: 3593312 (1971-07-01), Barton et al.
patent: 3838345 (1974-09-01), Schneider
patent: 3914746 (1975-10-01), Steinmetz et al.

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