Method and apparatus for data exchange between microprocessors

Details Method and apparatus for data exchange between microprocessors Method and apparatus for data exchange between microprocessors

1988-09-22

1989-07-04

Harkcom, Gary V.

Boots, shoes, and leggings

36442401, 370 60, 370 94, G06F 1338

Patent

active

048456675

ABSTRACT:
A method and apparatus for data exchange between a master microprocessor and a slave microprocessor, in which the connection is a parallel bus and the data exchange requires a minimum of time. For this purpose, the data are transmitted in a predetermined sequence and in which the transmission-start identifier is a signal train generated by the master processor which is specifically associated with data transmission. Preferably, a master processor and a slave processor are interconnected by the parallel data bus, with buffer memories, such as latches, interposed. A toggle flip-flop is connected to the interrupt input of the slave processor in such a way that merely placing a specific instruction (i.e. command+data) on the bus simultaneously notifies the slave processor to prepare for the exchange of data, thereby saving time.

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