Input and output recording device and method, CPU and data read and write operation method thereof
First Claim
1. An input and output recording device, whereinthe input and output recording device is provided between a central processor CPU and a peripheral, and is configured to record data read and write operations between the CPU and the peripheral, the data read and write operations comprise a data read and write operation initiated by the peripheral and a data read and write operation initiated by the CPU;
- wherein the input and output recording device is further configured to request the CPU to process the data read and write operation initiated by the peripheral, and upon receiving an instruction sent by the CPU, send a data packet of the data read and write operation initiated by the peripheral to the CPU,wherein the input and output recording device is further configured to request the CPU to process the data read and write operation initiated by the peripheral when the data packet of the data read and write operation initiated by the peripheral stored in the input and output recording device reaches a preset threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure provides an input and output recording device and method, CPU and data read and write operation method thereof. The input and output recording device is provided between a central processor CPU and a peripheral, and is configured to record data read and write operations between the CPU and the peripheral, wherein the data read and write operations comprise a data read and write operation initiated by the peripheral and a data read and write operation initiated by the CPU; the input and output recording device is further configured to request the CPU to process the data read and write operation initiated by the peripheral, and upon receiving an instruction sent by the CPU, send a data packet of the data read and write operation initiated by the peripheral to the CPU. The disclosure can accurately record the data read and write operation between the CPU and the peripheral, so as to eliminate the influence of uncertainty caused by the asynchronous data read and write operations initiated by the peripherals, and provide a basis for the input and output security checking of the CPU.
49 Citations
12 Claims
-
1. An input and output recording device, wherein
the input and output recording device is provided between a central processor CPU and a peripheral, and is configured to record data read and write operations between the CPU and the peripheral, the data read and write operations comprise a data read and write operation initiated by the peripheral and a data read and write operation initiated by the CPU; -
wherein the input and output recording device is further configured to request the CPU to process the data read and write operation initiated by the peripheral, and upon receiving an instruction sent by the CPU, send a data packet of the data read and write operation initiated by the peripheral to the CPU, wherein the input and output recording device is further configured to request the CPU to process the data read and write operation initiated by the peripheral when the data packet of the data read and write operation initiated by the peripheral stored in the input and output recording device reaches a preset threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An input and output recording method, comprising:
-
recording data read and write operations between a central processor CPU and a peripheral, the data read and write operations comprising a data read and write operation initiated by the peripheral and a data read and write operation initiated by the CPU; and requesting the CPU to process the data read and write operation initiated by the peripheral, and upon receiving an instruction sent by the CPU, send a data packet of the data read and write operation initiated by the peripheral to the CPU, wherein the requesting the CPU to process the data read and write operation initiated by the peripheral comprises; requesting the CPU to process the data read and write operation initiated by the peripheral when the data packet of the stored data read and write operation initiated by the peripheral reaches a preset threshold. - View Dependent Claims (10, 11)
-
-
12. The input and output recording method of claim Original 9, further comprising:
-
obtaining a transaction identification of the data packet of the data read and write operation between the CPU and the peripheral; and determining whether the data read and write operation between the CPU and the peripheral is the data read and write operation initiated by the peripheral according to the transaction identification.
-
Specification