Dual port exchange memory between multiple microprocessors

Details Dual port exchange memory between multiple microprocessors Dual port exchange memory between multiple microprocessors

1980-12-29

1984-04-17

Nusbaum, Mark E.

Boots, shoes, and leggings

G06F 1300

Patent

active

044438460

ABSTRACT:
There is described a unique apparatus for exchanging commands and data via a dedicated memory which has ports connected to the data and address busses of two different microprocessors. The system operates even though the microprocessors have different word lengths, e.g. a sixteen bit processor and an eight bit processor. The system permits interfacing between the microprocessors with different bit size words and allows each of the microprocessors to treat the exchange memory as part of its own memory space without locking one microprocessor off of a shared bus.

REFERENCES:
patent: 4118771 (1978-10-01), Pomella et al.
patent: 4130865 (1978-12-01), Heart et al.
patent: 4153934 (1979-05-01), Sato
patent: 4204251 (1980-05-01), Brudevold
patent: 4214305 (1980-07-01), Tokita et al.
patent: 4215399 (1980-07-01), Pavicic et al.

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