DMA転送制御方法及び制御装置 - INTERNATIONAL BUSINESS MASCHINES CORPORATION

Title:

DMA転送制御方法及び制御装置

Document Type and Number:

Japanese Patent JP4204759

Kind Code:

B2

Abstract:

Data being DMA-transferred can be referenced, and the waiting time of the CPU performing DMA-transfer can be reduced. A DMA transfer controller (10) comprises: detecting means (12) for detecting a reference request from a CPU (70) to refer to data to be DMA-transferred. The CPU (70) is allowed to refer to the data for which the reference request is detected prior to the DMA transfer being executed.

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Inventors:

Makoto Ueda

Application Number:

JP2001067342A

Publication Date:

January 07, 2009

Filing Date:

March 09, 2001

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Assignee:

INTERNATIONAL BUSINESS MASCHINES CORPORATION

International Classes:

G06F12/00; G06F13/28

Domestic Patent References:

JP10508967A
JP11184799A
JP62075850A
JP62099845A

Attorney, Agent or Firm:

Hiroshi Sakaguchi
Yoshihiro City

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