Apparatus using in undifferentiated strobe output to interface e

Details Apparatus using in undifferentiated strobe output to interface e Apparatus using in undifferentiated strobe output to interface e

1989-09-29

1992-10-13

Lee, Thomas C.

Boots, shoes, and leggings

364DIG1, 3642399, 364DIG2, 36492797, G06F 1300

Patent

active

051558394

ABSTRACT:
A node adapter chip for linking a node microprocessor to a serial data link incorporates a read/write circuit and an interrupt processing means to allow increased flexibility in connecting the adapter to different node microprocessors with different interface protocols. The read/write input circuit accepts dual strobe or single strobe type read/write commands and the interrupt processor accepts either conventional interrupt handling or "polled" operation for use with microprocessors that do not have interrupt capabilities. A flag multiplexer allows the controller in the node adapter to receive status information from a serial interface in the adapter without the need for extra data transfer cycles.

REFERENCES:
patent: 4287562 (1981-09-01), Huston, Jr.
patent: 4641261 (1987-02-01), Dwyer et al.
patent: 4882702 (1989-11-01), Struger et al.
patent: 4899306 (1990-02-01), Greer
patent: 4967346 (1990-10-01), Freidin
Motorola Product Preview of MC68HC53 Asynchronous Communication Interface Adapter (ACIA) pp. 3.520-3.523, 1983.

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