Communication multiplexer having dual microprocessors

Details Communication multiplexer having dual microprocessors Communication multiplexer having dual microprocessors

1983-07-11

1984-12-11

Thomas, James D.

Boots, shoes, and leggings

G06F 1300

Patent

active

044882319

ABSTRACT:
A data processing system includes a communication subsystem having an I/O microprocessor for communicating with a central processing unit and a main memory; and a line microprocessor for communicating with a number of devices. The I/O microprocessor and the line microprocessor communicate with each other through mailboxes stored in a shared memory. The line microprocessor interrupts the I/O microprocessor to process data bytes being transferred between main memory and a device requesting service when the line microprocessor has responded to the requesting device and loaded the mailbox.

REFERENCES:
patent: 3500466 (1970-03-01), Carleton
patent: 4016548 (1977-04-01), Law
patent: 4032899 (1977-06-01), Jenny
patent: 4074352 (1978-02-01), Cook
patent: 4075691 (1978-02-01), Davis et al.
patent: 4133030 (1979-01-01), Huettner et al.
patent: 4200930 (1980-04-01), Rawlings
patent: 4215400 (1980-07-01), Denko
patent: 4231086 (1980-10-01), Tarbox et al.

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