Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hajime Yasuda

Kunihiko Nakada

Haruo Keida

Kunihiko Ohnuma

Yoshiyuki Miwa

Tsuyoshi Jouno

Hideo Maejima

Tadaaki Bandoh

Yoshiki Kobayashi

Kazuyoshi Asada

An output gate means is provided which is capable of outputting individual signals selectively to an internal bus; the individual signals are interchanged among a plurality of functional modules connected to the internal bus which is interfaced with an external circuit. An input gate means is provided which is capable of supplying selectively a signal, input to the internal bus, to a specified functional module in place of an individual signal.

Semiconductor integrated circuit device with test mode for testing CPU

A data processor system is capable of operating in a first mode comprising a computer mode so as to carry out data processing functions and is also capable of operating in a second mode comprising a sequencer mode so as to carry out high speed sequence operations on the basis of programmed sequences. A high speed change between the computer and sequencer modes can freely be effected by executing mode change instructions so that the data processor system performs the duplex functions of a computer and a sequencer.

Data processor system capable of providing both a computer mode and a

In an electronic computer system wherein, when a microprogram-controlled central processing unit receives a stop signal from a console, the contents of a group of registers are assigned to predetermined fixed areas in a main memory and, in response to a start signal, the assigned contents of the group of registers are delivered from the fixed areas to the group of registers. The reading and writing of the contents of the group of registers within the central processing unit is effected for the fixed areas of the main memory in which the contents are assigned.

System for stopping and restarting the operation of a data processor

Disclosed is a printed circuit board loaded with electronic circuits, the board having at least two connector plugs for power supply, one is relatively long while the other is relatively short. These connector plugs are connected to each other through an impedance element. During an insertion of the board to a power line, the longer connector plug gets in contact with the power line earlier than the shorter one, while, during the withdrawal of the board from the line, the longer connector plug leaves the line later than the shorter one.

Printed circuit board capable of being inserted and withdrawn on on-line

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Tachikawa, Japan

Hajime Yasuda