JPH01166157A - Information transmitting device - Google Patents

Abstract

PURPOSE: To easily execute control to transmit information of many bits by providing a means to issue commands to inhibit or permit the reading and the writing of a register in a means to selectively use one of plural registers in which data between processors are temporarily stored.

CONSTITUTION: The device is equipped with a register 1 in which the data to transfer are temporarily stored contained by each of plural CPU systems having plural CPUs 23 and 24 or 33 and 34, a first control means to inhibit a rewriting into the register 1 in a writing completion state, a reading inhibiting flag generating means 2 to give a reading inhibiting command and a reading permitting command and a second flag generating means writing inhibiting flag generating means 3 to give a writing inhibiting command and a writing permitting command to the register 1. Further, the device is equipped with a path through which an initializing signal 4 passes and an inverter circuit 16 which are a second control means to give the reading inhibiting command and the writing permitting command to the register 1 based on the initializing signal 4 and a path through which a readable signal 10 passes and an inverter circuit 15 which are a third control means to give the readable signal 10 to its own register in the writing completion state of the register 1.

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