Linear list based DMA control structure

  • US 5,644,784 A
  • Filed: 03/03/1995
  • Issued: 07/01/1997
  • Est. Priority Date: 03/03/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling a DMA controller through a linear list of DMA descriptors in memory, said method comprising the steps of:

  • writing descriptor entries in said linear list of DMA descriptors, each said descriptor entry being added at the end of said linear list in said memory; and

    reading said descriptor entry from said linear list of DMA descriptors starting at an address pointed to by a descriptor list pointer, said reading being performed by the DMA controller, each descriptor entry being accessed by the DMA controller in the order said descriptor entries were written to said linear list.

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