DATA PROCESSING

摘要

A data processing apparatus comprises a processor having an internal state dependent upon execution of application program code, the processor being configured to generate display data relating to images to be displayed and to buffer display data relating to a most recent period of execution of a currently executing application. The apparatus includes RAM for storing temporary data relating to a current operational state of program execution. The apparatus also includes a data transfer controller configured to transfer data from the RAM relating to the currently executing application, data relating to a current internal state of the processor and buffered display data to suspend data memory, and to transfer data from the suspend data memory to RAM and to the processor to recreate an execution state of an application at a time the suspend instruction was executed, and to retrieve display data relating to the resumed application.

主权项

1. Data processing apparatus connectable to an associated display, the apparatus comprising:
a processor having an internal state dependent upon execution of application program code by the processor, the processor being configured to generate display data relating to images to be displayed using the associated display in response to the execution of the program code and to buffer display data relating to a most recent period of execution of a currently executing application; a non-volatile data storage arrangement configured to store program code for one or more applications; a random access memory configured to store temporary data relating to a current operational state of program execution while the processor is executing the program code for the currently executing application; a non-volatile suspend data memory; and a data transfer controller configured, in response to a suspend instruction, to transfer data from the random access memory relating to the currently executing application, data relating to a current internal state of the processor and the buffered display data to the suspend data memory, and configured, in response to a resume instruction, to transfer data from the suspend data memory to the random access memory and to the processor so as to recreate the state of execution of an application at the time that the suspend instruction was executed, and to retrieve the display data relating to the resumed application from the suspend data memory, the processor causing the display to display information based on the retrieved display data while the resume instruction is being completed.