Method for performing sequence of actions in device connected to

Details Method for performing sequence of actions in device connected to Method for performing sequence of actions in device connected to

1995-12-21

1998-06-16

Meky, Moustafa M.

G06F 1502

Patent

active

057686181

ABSTRACT:
A method of controlling an input/output (I/O) device connected to a computer to facilitate fast I/O data transfers. An address space for the I/O device is created in the virtual memory of the computer, wherein the address space comprises virtual registers that are used to directly control the I/O device. In essence, control registers and/or memory of the I/O device are mapped into the virtual address space, and the virtual address space is backed by control registers and/or memory on the I/O device. Thereafter, the I/O device detects writes to the address space. As a result, a pre-defined sequence of actions can be triggered in the I/O device by programming specified values into the data written into the mapped virtual address space.

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