DMA controller with mechanism for conditional action under contr

Details DMA controller with mechanism for conditional action under contr DMA controller with mechanism for conditional action under contr

1994-11-16

1998-02-10

Harvey, Jack B.

G06F 1300

Patent

active

057179522

ABSTRACT:
A DMA controller capable of conditional action under the control of a status register, prespecified parameters, and a condition field of the channel command, and a DMA controller which returns status information to command entry locations that are reserved for this purpose are disclosed. The prespecified parameters may be held in a register having a mask field and a value field, and a test for conditional action may be a masked comparison of the status register and the value field. The condition field determines how the test result is interpreted and allows suppressing or forcing the conditional action during a command.

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