Data trade blocking method and apparatus

Abstract

The invention provides a data transfer and breaking method and device, which can be applied in a bus of a computer system. The device comprises a first analog element. The breaking method comprises the following steps: the first analog element sends out a retry signal to a master element at the request of the data transfer sent out by the master element to an object component via the bus of the computer system; the master element gives up the ownership of the bus of the computer system at the request of the retry signal to stop the data transfer. The data transfer and breaking method and device of the invention can reinforce the convenience of debugging.

Description

technical field [0001] The present invention is a data transaction blocking method and device, especially a data transaction blocking method and device applied to a computer system bus. Background technique [0002] Debugging (debug) is an important action in the design process of computer system software / hardware / firmware, so the peripheral device interconnect bus (Peripheral Component Interconnect bus, hereinafter referred to as the PCI bus) is frequently used in the current computer system Debugging is a very common requirement in the design process. However, because the PCI bus continuously transmits data in a normal state, in order to facilitate debugging, the data transaction action (Transaction) of the PCI bus must be completely stopped. [0003] In the current commonly used means, there are mainly two ways to block (blockout) the data transaction action of the PCI bus. The first way is to disable the arbiter (arbiter) of the PCI bus, but this way needs to come from ...

AI Technical Summary

Problems solved by technology

[0013] And if the above-mentioned memory reading cycle has a problem during execution and causes the desired data to be read from the read-only memory 998, this problem may occur in some actions in the above-mentioned seven actions, or some no action at all

However, the current common method for debugging the above-mentioned problems is to use instruments to measure the signals of the external interface of the chip to collect information, and this method can only monitor the first, fourth, fifth, and seventh of the above-mentioned seven actions. action, but cannot observe the problems caused by the 2nd, 3rd, and 6th actions inside the chip

In addition, in a highly integrated computer system, the interface bus extending outward from the chipset on the motherboard will not be easily accessed due to the crowded space, and different interfaces need to be accessed for different problems, and moreover What's more, some high-speed interface buses are very sensitive to instrument measurement behavior, and all the above-mentioned phenomena make it difficult to perform debugging operations

Images