Method of controlling data transfer between main memory of central computer and input/output device and arrangement therefor

An arrangement for temporarily storing data from a computer before sending it to a peripheral device, comprising:

• means for determining a data write command from said computer, said data write command indicating data transfer from said computer to said peripheral device is required;
• means for responding to the determination of said data write command by issuing a data retrieve instruction to said computer for acquiring data stored in said computer, said data to be placed into a buffer, and by commencing establishment of a connection with said peripheral device;
• and
• means for storing the data from said computer in said buffer.

An arrangement between a central computer and a peripheral device for temporarily storing data from said computer, comprising:

• first means for controlling overall operations of said arrangement;
• second means arranged to store data from said computer;
• third means which receives, from said computer, a data write command indicating data transfer from said computer to said peripheral device is required, said third means determining said data write command;
• fourth means for issuing a data retrieve instruction to be applied to said computer for acquiring data stored in said computer into said second means;
• fifth means instructing said fourth means to produce said data retrieve instruction via said first means upon being informed of the determination of said write command by said first means;
• and
• sixth means being coupled to said first and second means and said peripheral device, said sixth means being instructed by said first means to establish connection with the peripheral device.