Interface Between a Host Processor and an I/O Processor in a Multiprocessor System
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
This article describes a method of interface control between a control storage processor (CSP--host) and a file storage processor (FSP--I/O processor). Processor-to-processor communication, where one is an input/output (I/O) processor, requires speed and efficiency to offload the CPU cycle loads. Because processing time is an important factor in the operation of computer systems, this article describes a method of offloading the host processor to increase system response time and functional capabilities. Without the FSP (I/O processor), the disk and diskette are connected directly to the CSP channel. With the FSP, the disk, diskette, and tape exist under the FSP. With these I/O devices under the FSP, we reduce the CPU cycle loading on the CSP.