INTERFACE CIRCUITRY FOR COMMUNICATING BY MEANS OF MESSAGES,申请号ZA19870003067-传众专利搜索

INTERFACE CIRCUITRY FOR COMMUNICATING BY MEANS OF MESSAGES

申请公布号：ZA8703067(B)

申请号：ZA19870003067

申请日期：1987.04.29

申请公布日期：1987.12.30

申请人：

ATEA

发明人：GUIDO REMI MARCEL GALLOPYN

分类号：G05B;G06F3/00;G06F13/00;H03K

主分类号：G05B

摘要：Two buffer circuits of FIFO type, connected together in anti-parallel mode, form a bi-directional message buffer. Communications between the processors is via data busses and input/output circuits. The unit contains two status registers and two command registers. Each status register operates on 8-bit words, the first bit of which indicates whether a message from its associated processor is available. Each command register operates on an 8-bit word. the second bit of which indicates that a meassage has been received. When the message received bit is set it automatically resets the message available bit in the status register.