Printer with interpreter

1. A printer comprising:

a memory for storing an application program;

a processor coupled to the memory, the processor configured to perform the steps comprising:

receiving a command to enable or disable an interpreter task;

determining if the interpreter task has been enabled or disabled;

receiving a data stream;

sending the data stream to the interpreter task if enabled to construct therefrom one or more data packets in a predetermined printer control language to be sent to one or more tasks for printing;

sending the data stream directly to an extensible markup language task if the interpreter is disabled; and

executing the extensible markup language task, bypassing the interpreter.

2. The printer as recited in claim 1 , wherein the interpreter manipulates received data in accordance with the application program.

3. The printer as recited in claim 1 , wherein the application program is stored in a flash memory.

4. The printer as recited in claim 3 , wherein said interpreter includes software stored in an area of the flash memory to which access is limited.

5. The printer as recited in claim 1 , wherein the processor is responsive to each of a predetermined set of commands to process the commands upon receipt, bypassing the interpreter even if enabled.

6. The printer as recited in claim 1 , wherein the set of commands processed by the processor upon receipt includes the enable and disable command.

7. The printer as recited in claim 1 , wherein the extensible markup language task comprises a XML task.

8. A printer comprising:

a printing module including a printhead and a motor;

a communication interface for receiving a plurality of commands and data streams;

a memory for storing an application program; and

a processor coupled to the memory and operating in accordance with a plurality of tasks including:

a parser task for parsing data in a predetermined control language to be sent to the image generator task;

an interpreter task that can be enabled or disabled, the interpreter task when enabled, processing a stored application to construct one or more data packets in the predetermined printer control language to be sent to the parser; and

an executive task, the executive task sending data streams to the interpreter when the interpreter is enabled and sending data streams to the parser, bypassing the interpreter when the interpreter is disabled.

9. The printer as recited in claim 8 , wherein the executive task is responsive to each of a predetermined set of commands to process the commands upon receipt, bypassing the interpreter even if enabled.

10. The printer as recited in claim 9 , wherein the set of commands processed by the executive task upon receipt includes the enable and disable command.

11. The printer as recited in claim 9 , wherein the set of commands processed by the executive task upon receipt includes a command to load an application program into the printer.

12. A printer comprising:

a memory for storing an application program;

a processor coupled to the memory, the processor configured to perform the steps comprising:

receiving a command to enable or disable an interpreter task;

determining if the interpreter task has been enabled or disabled;

receiving a data stream;

sending the data stream to the interpreter task if enabled to construct therefrom one or more data packets in a predetermined printer control language to be sent to one or more tasks for printing;

sending the data stream directly to a PCL task if the interpreter is disabled; and

executing the PCL task, bypassing the interpreter.

13. The printer as recited in claim 12 , wherein the interpreter manipulates received data in accordance with the application program.

14. The printer as recited in claim 12 , wherein the application program is stored in a flash memory.

15. The printer as recited in claim 14 , wherein said interpreter includes software stored in an area of the flash memory to which access is limited.

16. The printer as recited in claim 12 , wherein the processor is responsive to each of a predetermined set of commands to process the commands upon receipt, bypassing the interpreter even if enabled.

17. The printer as recited in claim 16 , wherein the set of commands processed by the processor upon receipt includes the enable and disable command.

18. A method comprising:

receiving a command to enable or disable an interpreter task;

determining if the interpreter task has been enabled or disabled;

receiving a data stream;

sending the data stream to the interpreter task if enabled to construct therefrom one or more data packets in a predetermined printer control language to be sent to one or more tasks for printing; and

sending the data stream directly to a PCL task, bypassing the interpreter, for printing if the interpreter is disabled.

19. The method of claim 18 further including:

receiving an immediate command; and

processing the immediate command upon receipt, bypassing the interpreter even if enabled.

20. A method comprising:

receiving a command to enable or disable an interpreter task;

determining if the interpreter task has been enabled or disabled;

receiving a data stream;

sending the data stream to the interpreter task if enabled to construct therefrom one or more data packets in a predetermined printer control language to be sent to one or more tasks for printing; and

sending the data stream to an extensible markup language task, bypassing the interpreter, for printing if the interpreter is disabled.

21. The method of claim 20 further including:

receiving an immediate command; and

processing the immediate command upon receipt, bypassing the interpreter even if enabled.

22. The method of claim 20 , wherein the extensible markup language task comprises a XML task.