Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hitachi Computer Engineering Co., Ltd.

Hitachi Computer Eng. Co., Ltd.

Hiroshi Murayama

Tomoo Aoyama

Katsumi Ogiue

Kinya Mitsumoto

Satoru Isomura

Masamori Kashiyama

Kazuhiro Akimoto

Masami Usami

Hitoshi Abe

Yasuhiko Hatakeyama

Yoshikuni Kobayashi

Shun Kawabe

Hiraku Nakano

Hiroo Miyadera

Tomoyuki Ookawa

Yuuji Aoki

Disclosed is a semiconductor integrated circuit wherein a logic circuit for exchanging signals with RAMS, with the RAMS being disposed centrally on the semiconductor chip or substrate, is divided into a plurality of logic circuits in accordance with the kind of signals and the divided logic circuits are disposed around the RAM in such a manner as to minimize the distance of signal transmission paths with the RAM and in order to attain high speed access to RAMS.

Semiconductor integrated circuit device with two variable delay lines in

Semiconductor device for a ram disposed on chip so as to minimize

A vector processor having a scalar procesing unit, a vector processing unit, a main storage unit, an extended storage unit, a storage control unit, and a paging processor unit, in which the storage control unit address translation for an access request from the vector processing unit to the main storage unit and includes a circuit for storing a kind of an access request issued for each storage location of the main storage the paging processor unit includes a circuit operative in response to issuance of an access request for data in a logical address space not existing in the main storage unit for interrupting a vector access request related thereto from the vector processing unit, a circuit for releasing the interruption according to an instruction, a circuit for loading the main storage unit with requested data of a logical address space existing in the extended storage unit, and a circuit for detecting an area of the main storage having a lower access frequency so as to move data from the area into the extended storage unit. A microprogram is used to execute programming of an algorithm to achieve a data transfer between the main storage unit and the extended storage unit.

Processor system including a paging processor for controlling paging

A vector processing system having a main storage, a vector processor, a scalar processor, and an address translation mechanism in each processor in which data is stored in the main processor. The vector processing system includes a common memory in which processing results of vector data can be directly stored from resources such as arithmetic circuits and an operand fetch logic in the vector processor without using the address translation mechanism and from which data can be directly read out by the resources in the scalar processor without using the address translation mechanism, a common memory access control circuit for controlling the conflict among access requests issued from a plurality of resources in the processors and for controlling the access right through an assignment of a block number in a unit of a logical partition of the common memory, and a circuit for controlling, depending on set information held in the control circuit, a decode operation of an instruction specifying operations of the scalar and vector processors.

Vector processor capable of high-speed access to processing results from

A parallel processor system comprises a main storage, a processor array control apparatus, a control processor which requests the processor array control apparatus to execute the processing in accordance with a procedure start instruction, and a plurality of processor elements each containing a local memory. In response to a designation from the control processor, the processor array control apparatus transfers the program from the main storage to the local memories in all of the processor elements before they are driven. The processor array control apparatus then controls the conditions of the processor elements and drives those processor elements which are capable of processing the procedure in accordance with the procedure start instruction from the control processor.

Parallel processor system having control processor and array control

High and low order bit carry propagation adders are connected to outputs of carry save adder trees which produce half-sums and half-carries. Following carry propagation addition of the low order bits carry propagation addition of the high order bits is carried out. A carry from the low order bit carry propagation addition is added to the high order bit carry propagation addtion.

Vector multiplier having parallel carry save adder trees

A vector processing apparatus includes a scalar processor for executing scalar instructions and a vector processor for executing vector instructions. The vector processing apparatus has status code registers (SCR) which can be referred to by both processors through a wait managing circuit. The scalar instructions each have an order assurance instruction to assure an order of execution, and the order assurance instruction and the vector instruction each have a field to designate an SCR. The wait managing circuit renders the execution of the instruction in the scalar processor or the vector processor to wait or enable in accordance with a set status or a reset status of the SCR designated by the instruction field, and sets or resets the SCR designated by the instruction field in response to the completion of execution of the instruction to control synchronization of the execution of instructions in both processors.

Vector processing apparatus providing vector and scalar processor

An information processing apparatus having an address translation system includes a plurality of processors in each of which an addressing is carried out by translating a logical address into a real address in the virtual storage system for data processing. The plurality of processors include a scalar processor for translating a logical address into a real address by using an address translation table; and a vector processor for determining if the logical address to be relocated lies within a predetermined address range, for address-relocating the logical address to the real address based on a relocation table when the logical address lies within the predetermined address range, and using the logical address as a real address when the logical address lies outside of the predetermined address range. The predetermined address range and the content of the relocation table are set by the scalar processor which supervises the program storage area.

Address conversion for a multiprocessor system having scalar and vector

There is provided a vector processor based on a pipeline control method in which a cyclic operation is divided into a plurality of stages and processed. This processor comprises a vector register controller for dividing an operating process into a plurality of fundamental process units and controlling these units, and a phase generator for allowing the vector register controller to time-sharingly make the vector processor operative. This vector processor reads out data from vector registers in which vector elements are stored, operates this data and writes the result of operation into the vector register. With this vector processor, a cyclic operation can be processed in parallel at a high speed without causing a remarkable increase in hardware.

Vector processor capable of performing iterative processing

In a pipeline arithmetic apparatus, an arithmetic operation is divided into a plurality of stages and processed in an overlapping manner in each of the stages. Arithmetic circuits are provided each in association with each stage. Registers hold control information indicating the contents of arithmetic operations to the individual arithmetic circuits or to a predetermined number of the arithmetic circuits, respectively. The control information held by each of the registers is supplied to the associated arithmetic circuit or circuits straight-forwardly or after having been decoded to command the arithmetic operation to be executed by each of the arithmetic circuits. The control information held by each of the registers as well as the output from each of the arithmetic circuits is transferred to the registers and the arithmetic circuits of the succeeding stages, respectively.

Pipeline arithmetic apparatus

A sign generation system having a plurality of carry save adders. When adding a sum and a carry generated by a carry save adder in a next stage carry save adder, a full sum of two-bit sign fields adjacent to data fields of the sum and the carry is calculated. The resulting two-bit sign is combined with a constant to generate an exact sign, decreasing number of transferred sign bits.

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Hadano, Japan

Hiroshi Murayama