Method and arrangement for the monitored transfer of control sig

Details Method and arrangement for the monitored transfer of control sig Method and arrangement for the monitored transfer of control sig

1982-11-15

1985-01-08

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 100

Patent

active

044930526

ABSTRACT:
Method for monitored transfer of control signals at interfaces of digital systems wherein a request signal is transferred by a first system via a request line to a second system, information concerning the cause of the request signal is taken by the second system from a status register of the first system, and the status register is subsequently reset, which comprises providing the first system with both a first and a second status register; storing the information concerning the cause of the request signal in the first status register which has outputs connected to respective inputs of the second status register; connecting the second status register to the second system when a read signal delivered by the second system is present; severing the connection between the first and the second status registers during the presence of the read signal and a subsequent clock cycle of the first system; monitoring by the second system of a readout of the second status register; and resetting respective cells of the first status register after the second status register is read out, and an arrangement for carrying out the method.

REFERENCES:
patent: 4078259 (1978-03-01), Soulsby et al.
patent: 4241416 (1980-12-01), Tarczy-Hornoch
The Programmable Floppy-Disc Controller 8271--Intel Company Component Data Catalog, Jan. 1981, particularly pp. 8-115 to 8-118.
Programmable HDLC-SDLC Protocol Controller 8273--Intel Component Data Catalog, Jan. 1981, particularly pp. 9-163 to 8-175.

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