Memory allocation and access method and device using the same

Details Memory allocation and access method and device using the same Memory allocation and access method and device using the same

2011-01-04

2011-01-04

Chen, Alan (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S012000, C710S026000, C710S028000

Reexamination Certificate

active

07865632

ABSTRACT:
A memory allocation method for a direct memory access controller (DMAC) in a limited-memory-size computer system includes the steps of allocating a memory space having continuous memory addresses to form a buffer of the DMAC; dividing the memory space successively into a plurality of first memory blocks and a second memory block, wherein the size of the second memory block is equal to a maximum frame size possibly accessed by the DMAC; and assigning the plurality of first memory blocks and the second memory block to a plurality of descriptors in order, wherein each of the plurality of descriptors is utilized for recording a memory address of a corresponding memory block as a pointers for the corresponding memory block.

REFERENCES:
patent: 5933654 (1999-08-01), Galdun et al.

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