A method, system, apparatus, and computer-readable medium for exchanging data between an application program and a firmware in a computer system having multiple CPUs are provided. According to the method, an application program stores an input parameter for the firmware program in a register of the CPU on which it is executing. Data is also stored in a register of the CPU that identifies the CPU as having generated a SMI. The application program then generates a software SMI. In response to the SMI, a SMM dispatcher executing within the SMM causes the current contents of all the registers of the CPUs to be saved. The SMM dispatcher then identifies the CPU that generated the SMI by searching the saved register contents to locate the data stored by the application program that identifies the CPU as having generated the software SMI. Once the CPU has been identified, the input parameter can be retrieved from the saved register contents for the identified CPU.

The present invention provides a diagnostics methodology and embedded electronic system that allows optimized low-frequency data sampling for EMA motoring subsystems in an operating vehicle. Each of the EMA motoring subsystems includes: an EMA; at least one motor for driving the EMA; and power controls for operating the motor, wherein the power controls includes a DSP controller for sampling and processing data at low-frequency sampling rates. The diagnostic methodology includes a method that has the steps of: determining an operational mode of the EMA motoring subsystem; selecting a sampling rate optimized for the determined operational mode; acquiring and processing data at the selected sampling rate; and analyzing the processed data to identify and classify a fault of the EMA motoring subsystem.

A wireless communication system is described for allocating limited network access according to priorities designated for requested transactions of wireless communications. The wireless network has a number of access links for transmitting transactions for wireless communications. A plurality of wireless communications devices request transmission of transactions on the wireless network. A designated priority level is associated with each transaction. In response to the transaction requests, an access control manager in the wireless network schedules transmission of transactions when all of the plurality of access links are occupied, by authorizing a transmission of a transaction of higher priority than another transaction that is being transmitted, and discontinuing the transmission of the transaction of lower priority.