CONDITIONAL LINKS FOR DIRECT MEMORY ACCESS CONTROLLERS

摘要

Some embodiments relate to a Direct Memory Access (DMA) controller. The DMA controller includes a bus controller having a system bus interface and configured to read a pattern from a memory location via the system bus interface. Pattern comparison logic compares the read pattern to at least one predetermined pattern. Control logic induces the bus controller to process a first conditional link over the system bus interface if the read pattern differs from the predetermined pattern, and induces the bus controller to process a second conditional link over the system bus interface if the read pattern differs from the predetermined pattern.

主权项

1. A Direct Memory Access (DMA) controller, comprising:
a bus controller having a system bus interface and configured to read a pattern from a memory location via the system bus interface; pattern comparison logic configured to compare the read pattern to at least one predetermined pattern; and control logic configured to induce the bus controller to process a first conditional link over the system bus interface if the read pattern differs from the predetermined pattern, and further configured to induce the bus controller to process a second conditional link over the system bus interface if the read pattern matches the predetermined pattern.