The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1987
Filed:
Jun. 20, 1984
Shosuke Mori, Tokyo, JP;
Atsushi Sakurai, Fuchu, JP;
Satoshi Aoki, Tokyo, JP;
Tatsuya Suzuki, Tokyo, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A multiprocessor system used, for example, in a personal computer, wherein different types of microprocessors are used independently of the architecture of each microprocessor. The system includes a control register, a control circuit, and a common peripheral circuit mounted, for example, on a main board, and a plurality of kinds of microprocessors each mounted, for example, on a sub-board connected to the main board. The control circuit transmits a halt request signal to a first microprocessor which is currently operating, in response to coincidence between an output signal of the control register and the status signal indicating that a second microprocessor is in a halt condition, when the output signal of the control register is changed by the first microprocessor. Then, the control circuit releases a halt request signal applied to the second microprocessor in response to coincidence between a status signal indicating that the first microprocessor has entered into a halt condition and the output signal of the control register.