By ACPI, what EC should do when it has detected a system event that must be communicated to OSPM?
it first sets the SCI_EVT flag in the EC_SC register, generates an SCI, and then waits for OSPM to send the query (QR_EC) command.
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: By ACPI, what EC should do when it has detected a system event that must be communicated to OSPM? ### Response: it first sets the SCI_EVT flag in the EC_SC register, generates an SCI, and then waits for OSPM to send the query (QR_EC) command. 