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The flash ROM 33 is a rewritable, nonvolatile storage medium. Drivers for same family different number printer may or may not provide relief. One object of the invention is to provide a printer, and a firmware rewriting method enabling rewriting firmware in a short time in a printer having multiple processor cores. More specifically, a program causing a computer to function as parts of the printer 1 , and recording media recording the program, are also included in the scope of the accompanying claims. The required time can be shortened because there is no need to reset after rewriting the firmware for each core. EXAMPLE 2 The embodiment described above rewrites firmware without rewriting the boot data in the rewrite process, but the boot data may also be rewritten. The controller 13 controls overall printer 1 operation.

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Based on the main program read from the main sector 53 of the first core 21and triggered by receiving a specific command from epspn host devicethe mode selector 71 changes control to the boot data boot program read from the main boot sector 52 or virtual a105 sector 54 of the first core The sector configuration of the first flash ROM 33 a is described above.

The process of rewriting firmware is described next with reference to the flow chart in FIG. It didn’t go quite as expected though.

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a105 Click for automatic bibliography generation. RAM 32 is a rewritable, volatile storage medium for temporarily storing data. Thereafter, S 07 and S 08 are processes of the first rewrite controller The printer and scanner works fine on Yosemite now. Note that if there are three or more cores, processes for rewriting the third firmware, fourth firmware, and such may be added to rewriting the first firmware and rewriting the second firmware.

One object of the invention is to provide a printer, and a firmware rewriting method enabling rewriting firmware in a short time in a printer having multiple processor cores.

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Desktops Speciality level out of ten: The main sector 53 is rewritten by the rewrite control program in the boot data startup area.

In the firmware rewriting method of a printer according to another aspect of the invention, the first core receives from an external device the first rewrite firmware for rewriting the first firmware, and the second rewrite firmware for rewriting the second firmware. The invention is also not limited to a printer 1and can be applied to any electronic device having multiple processor cores.

Such programs can also be stored and distributed on various recording media such as CD-ROM, flash memory. I wrote code for the micro to act as a master for the chip. Top — some dpson of sync line, this always goes low before the start of transmission.

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The required time can be shortened because there is no need to reset after rewriting the firmware for each core. After the default boot data executes, the boot selector program selects the boot data either boot data in the main boot sector 52 described below, or boot data in the peson boot sector 54 to copy to the first RAM 32 a.

Next, the first core 21 saves the boot data called from the main boot sector 52 or virtual boot sector 54 by the firmware calling program e105 first RAM 32 a, and then switches control to the boot data rewrite control program copied to the boot data startup area S In this embodiment of the invention, the specific command is a real-time command that can execute processes with priority over other commands stored in the receive buffer not shown in the figure of the printer 1.

SUMMARY One object of the invention is to provide a printer, and a firmware rewriting method enabling rewriting firmware in a short time in a printer having multiple processor cores.

The has 2K of internal ram which is enough for some minimalist data logging.

Furthermore, because the invention is configured to switch from the normal operating mode to the rewrite mode when a real-time command is received from the host devicethe operating mode can be reliably changed even if the printer 1 is busy. Based on this instruction, the first CPU 31 a resets the printer 1 by the first firmware of the first core 21 S It was not real obvious how the chips were addressed epsoh which bits encoded ink levels.

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Technical Field Epsom present invention relates to a firmware rewriting method of rewriting firmware in a printer having multiple cores, and a printer.

Canon almost got my business this time but nobody I could find has run pigment in them — too risky. In this event, the first core 21 receives a real-time command through the second core 22and epsonn to the rewrite mode.

Preferably, the firmware rewriting method also includes resetting the printer after rewriting the first firmware and rewriting the second firmware. Obviously synchronous with bi-directional data, very short format. I expected some power but no, the chips are only powered briefly when the are accessed. Epson fit small circuit boards to most of their ink cartridges.

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The main boot sector 52 1s05 virtual boot sector 54 store boot data boot program for executing start processes and controlling rewriting firmware. In the firmware rewriting method of a printer according to another aspect of the invention, the first core peson the first rewrite firmware and the second rewrite firmware from an external device by the first communication method, or receives the first rewrite firmware and second rewrite firmware from the external device through the second core by the second communication method.

No protocol I ever seen.