公开(公告)号：JPH08297628A

公开(公告)日：1996-11-12

申请号：JP6066796

申请日：1996-03-18

Applicant: SYMBIOS LOGIC INC

Inventor： RICHIYAADO DEII KAAMAIKERU ,  JIYOERU EMU UOODO ,  MAIKERU EE UINCHIERU

IPC: G06F13/12 ,  G06F13/28

Abstract: PROBLEM TO BE SOLVED: To improve the inputting/outputting performance of a computer system under the control of the multisleded operating system of a multitasking. SOLUTION: This is a device and method for chaining the continuous DMA distributed collection sub-block of a PRD table for a channel 0 with the continuous DMA distributed collection sub-block of the PRD table for a channel 1 while maintaining the maximum media band width by using a single data manager 124. The DMA block transfer is scheduled based on the validity of data from the buffer memory of an I/O device, so that the idle time of a media or a network can be minimized, and the idle time of an I/O bus can be minimized. Thus, almost the maximum aggregate band width of multiple I/O buses and devices related with them can be obtained.