JPS6444544A - Program control system - Google Patents

Program control system

Info

Publication number
JPS6444544A
JPS6444544A JP62199860A JP19986087A JPS6444544A JP S6444544 A JPS6444544 A JP S6444544A JP 62199860 A JP62199860 A JP 62199860A JP 19986087 A JP19986087 A JP 19986087A JP S6444544 A JPS6444544 A JP S6444544A
Authority
JP
Japan
Prior art keywords
instruction
circuit
switching
control
decoding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62199860A
Other languages
Japanese (ja)
Inventor
Yuji Hatanaka
Shinichi Wakumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP62199860A priority Critical patent/JPS6444544A/en
Publication of JPS6444544A publication Critical patent/JPS6444544A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To use the same bits for control instructions in command and to reduce the number of bits by coding a control instruction for switching between multiplication and division for two control instructions in a register and a buffer and error correcting operation at the time of outputting an operation executing instruction and adding decoding circuits for executing decoding following to said coding. CONSTITUTION:A program instruction is constituted of one word consisting of 11 bits and switching between an error correcting instruction and a control instruction is executed by a condition deciding circuit 46. A program counter 44 is controlled by an output from the circuit 46 to control the address of a program ROM 43. A register decoding circuit 48 and a buffer decoding circuit 49 decode the control instruction by the output of the ROM 43 and a real data decoding circuit 60 converts complete real data to be used for error correction. A Y-ROM 56 in an error correcting operation circuit 28 reversely converts the data and controls bus switching between buses 59, 58 to execute switching between multiplication and division.
JP62199860A 1987-08-12 1987-08-12 Program control system Pending JPS6444544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62199860A JPS6444544A (en) 1987-08-12 1987-08-12 Program control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62199860A JPS6444544A (en) 1987-08-12 1987-08-12 Program control system

Publications (1)

Publication Number Publication Date
JPS6444544A true JPS6444544A (en) 1989-02-16

Family

ID=16414852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62199860A Pending JPS6444544A (en) 1987-08-12 1987-08-12 Program control system

Country Status (1)

Country Link
JP (1) JPS6444544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2375555A1 (en) 2010-03-26 2011-10-12 Tohoku Ricoh Co., Ltd. High voltage inverter device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330841A (en) * 1976-09-03 1978-03-23 Nippon Signal Co Ltd:The Control method of computer
JPS55154635A (en) * 1979-05-21 1980-12-02 Hitachi Ltd Data processor
JPS5747449A (en) * 1980-09-05 1982-03-18 Nitta Zerachin Kk Foamed food containing fats and oils
JPS60103562A (en) * 1983-11-11 1985-06-07 Hitachi Ltd Error correction device
JPS61103241A (en) * 1984-10-27 1986-05-21 Nec Corp Information processor
JPS6298428A (en) * 1985-10-25 1987-05-07 Hitachi Ltd Data processing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330841A (en) * 1976-09-03 1978-03-23 Nippon Signal Co Ltd:The Control method of computer
JPS55154635A (en) * 1979-05-21 1980-12-02 Hitachi Ltd Data processor
JPS5747449A (en) * 1980-09-05 1982-03-18 Nitta Zerachin Kk Foamed food containing fats and oils
JPS60103562A (en) * 1983-11-11 1985-06-07 Hitachi Ltd Error correction device
JPS61103241A (en) * 1984-10-27 1986-05-21 Nec Corp Information processor
JPS6298428A (en) * 1985-10-25 1987-05-07 Hitachi Ltd Data processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2375555A1 (en) 2010-03-26 2011-10-12 Tohoku Ricoh Co., Ltd. High voltage inverter device

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