System for programming peripheral with address and direction inf

Details System for programming peripheral with address and direction inf System for programming peripheral with address and direction inf

1995-04-25

1999-03-30

Lee, Thomas C.

395824, 395829, 395851, 39520042, G06F 1314, G06F 1328, G06F 1516

Patent

active

058900128

ABSTRACT:
A slave DMA peripheral achieves the functionalities of a bus master without incurring the costs of additional address and control lines. Information regarding buffers to be accessed is loaded in the peripheral from the CPU. Actual buffer addresses, length values, and direction information are later programmed into the DMA controller by the peripheral. The present invention manages communication between the peripheral and main memory through the DMA controller. This allows the peripheral to access buffers in memory using a minimal number of lines.

REFERENCES:
patent: 4467411 (1984-08-01), Fry et al.
patent: 4527233 (1985-07-01), Ambrosius, III et al.
patent: 4987529 (1991-01-01), Craft et al.
patent: 5343427 (1994-08-01), Teruyama
patent: 5430853 (1995-07-01), Arakawa
patent: 5499384 (1996-03-01), Lentz et al.
patent: 5619513 (1997-04-01), Shaffer et al.
patent: 5685012 (1997-11-01), Klein

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