Seiko Epson Corporation

Hirofumi Terasawa

Yoshiyuki Miyayama

Makoto Kudo

Toshimitsu Moritaku

Provided is a printer control device that controls a printer that includes an ink jet head unit that has head arrays, in which three or more ink jet heads for ejecting ink from nozzle arrays are aligned in a nozzle array extending direction, the printer control device includes a head control section that causes an ink jet head unit to execute printing without using a designated head that is an ink jet head designated and all ink jet heads aligned on one side in the nozzle array extending direction with reference to the designated head, in a designation mode, in which inhibition of use of the ink jet heads is designated.

Printing control device, printing apparatus, control method of printing control device, and program

An objective is to provide a microcomputer, electronic equipment and emulation method which can realize the optimum circumstance of evaluation while saving the number of terminals. An external bus is shared between external and emulation memories. In the emulation mode, the access of CPU to an internal ROM is switched to the access of CPU to the emulation memory through an external bus. The emulation mode is turned ON or OFF through a mode selection terminal or mode selection register. The emulation memory is controlled by a control signal CNT2 different from a control signal CNT1 which controls the external memory. A memory read signal in CNT2 become active at a timing earlier than that of a memory read signal in CNT1. Thus, the instruction is fetched and decoded within one clock cycle. A mode selection terminal is further provided for selecting a mode of performing the boot from the emulation memory, internal ROM or external memory and a made of selecting OPT mode.

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Okaya, Japan

Hirofumi Terasawa