Direct memory access controller

Details Direct memory access controller Direct memory access controller

1989-04-03

1994-01-11

Bowler, Alyssa H.

Boots, shoes, and leggings

364DIG1, 3642423, 36424231, G06F 1300, G06F 1328, G06F 1332

Patent

active

052789659

ABSTRACT:
A direct memory access controller adaptable to control a direct memory access transfer in a data processing system which includes at least a central processing unit and a system bus, comprises a register coupled to the system bus for outputting a transfer terminate request signal which instructs a normal termination when the central processing unit is operating and a write operation is carried out with respect to the register from the central processing unit, and a transfer termination part coupled to the register for stopping to accept a new transfer request signal or stopping to generate a transfer request signal responsive to the transfer termination request signal so as to make an instructed channel inactive.

REFERENCES:
patent: 3999163 (1976-12-01), Levy et al.
patent: 4275440 (1981-06-01), Adams, Jr. et al.
patent: 4514808 (1982-05-01), Murayama et al.
patent: 4611279 (1986-09-01), Andresen et al.
patent: 4688166 (1987-08-01), Schneider
patent: 4797853 (1989-01-01), Savage
patent: 4878166 (1989-10-01), Johnson et al.
patent: 4953103 (1990-08-01), Suzuki
patent: 4989113 (1991-01-01), Hull, Jr. et al.
patent: 5018098 (1991-05-01), Taniai et al.
patent: 5056011 (1991-10-01), Yoshitake et al.
patent: 5063498 (1991-11-01), Hirahara et al.
patent: 5119487 (1992-06-01), Taniai et al.
"The Handbook of Micro Computer Interfacing" by Steve Leibson Copyright 1983 by TAB BOOKS Inc. Chapters 8 & 9 pp. 231-246.
Motorola M68000 Family Reference Book; 1988; Chapter 5.
Japanese Patent Abstract of 59-16035 filed Jan. 27, 1984.
Electronics International, vol. 56, No. 9 dated May 1983.

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