104 results about "Interrupt vector table" patented technology

The invention discloses an optical module firmware in-application upgrading method capable of not interrupting service. Two areas are set in an optical module internal program storage area and are respectively used for storing an upgrade program and an application program, a special area is set and used for backing up an interrupt vector table of a Boot program, an upper computer communicates with an optical module, the interrupt vector table is switched, and the skip between the Boot program and the application program is realized through a program pointer. The method specifically comprises the following steps of: 1) extracting firmware contents; 2) entering a download mode and upgrading a firmware; 3) erasing the original firmware; 4) writing a new firmware; and 5) entering an application mode, wherein after data and codes are verified, the upper computer transmits a download mode exit command, the optical module firmware exits from the upgrade program and is switched to execute the new application program, and the optical module works normally. By adopting the optical module firmware in-application upgrading method capable of not interrupting service, since the switching between the application program and the upgrade program is controlled by the command which is transmitted by the upper computer and an MCU (micro control unit) is not required to be reset, the situation that the work of the optical module is interrupted is not caused.

A method and apparatus for configuring a microcontroller. An XML description of the microcontroller's hardware resources may be accessed. A user may select from available hardware resources and pre-defined user modules to select a configuration. Configuration information, which may include register bit patterns and microprocessor instructions, may be automatically generated. Additionally, application programming interface calls and structure, as well as interrupt vector tables may be automatically generated. Embodiments of the present invention provide improved ease of use and the ability to manage greater complexity in the configuration of configurable microcontrollers.

An interrupt processing technique is provided where an interrupt message is sent to an interrupt controller of a processor in response to an interrupt request from an individual device. The interrupt message comprises a memory address and interrupt status information. The memory address is specifically allocated to the device that has issued the interrupt request. The interrupt status information indicates an interrupt status of the device. An interrupt table that is stored in the memory is updated by the interrupt controller using the interrupt status information comprised in the interrupt message. The interrupt table holds device specific interrupt statuses. Updating the interrupt table comprises addressing the memory using the memory address in the interrupt message.

A method, system, and article of manufacture to efficiently support interrupts of a computer system. A message-based interrupt from a device of the computer system is intercepted. A fake line-based interrupt for the device corresponding to the message-based interrupt is determined, wherein an operating system (OS) of the computer system is not message-based interrupt capable. The fake line-based interrupt is issued to the OS. A query from the OS regarding the fake line-based interrupt is serviced, the query to determine if the fake line-based interrupt was from the device. An interrupt vector associated with the message-based interrupt is provided to the OS.

An apparatus which comprises two or more moderation timers associated with an interrupt vector is presented. In one embodiment, the apparatus comprises two or more interrupt vectors and moderation timers are set with different interrupt rates. An interrupt vector logic unit sends an interrupt vector if there is an interrupt event from the queue associated with a moderation timer and the moderation timer expires.

A method, apparatus, and computer instructions for counting interrupts by type. An interrupt count is incremented when a particular type of interrupt occurs. The count may be stored in the IDT or an interrupt count table outside the IDT. The interrupt unit increments the count each time a particular type of interrupt occurs. In the event of a potential count overflow, the mechanism of the present invention provides logic necessary to notify software in order to handle the overflow.