Common front-end control for a peripheral controller connected t

Details Common front-end control for a peripheral controller connected t Common front-end control for a peripheral controller connected t

1979-12-14

1982-03-30

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 300

Patent

active

043227929

ABSTRACT:
A common control circuit card developed to serve the commonly used functions of a variety of data link processors in an I/O subsystem. The common control circuit card when combined with a peripheral dependent circuit board forms a peripheral-controller designated as a data link processor. The common control circuit card provides PROM storage means to store micro-code operators for execution by the peripheral dependent board which is tailored to service the needs of the individual type of peripheral terminal unit connected to it. Address means are provided to access selected sequences of micro-code word operators stored in said PROM storage means. Address multiplexors are used for selecting address sources from a host system address, a peripheral address, or from a selected area of a RAM buffer which can provide an address. The common control circuit uses the RAM buffer for temporarily storing data being transferred between a main host computer system and a peripheral terminal unit.

REFERENCES:
patent: 4069511 (1978-01-01), Lelke
patent: 4115852 (1978-09-01), Rozell
patent: 4145739 (1979-03-01), Dunning et al.

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