JPS55131848A - Data processor - Google Patents

Data processor

Info

Publication number
JPS55131848A
JPS55131848A JP3954779A JP3954779A JPS55131848A JP S55131848 A JPS55131848 A JP S55131848A JP 3954779 A JP3954779 A JP 3954779A JP 3954779 A JP3954779 A JP 3954779A JP S55131848 A JPS55131848 A JP S55131848A
Authority
JP
Japan
Prior art keywords
control part
data
cpu1
memory unit
fixed
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
JP3954779A
Other languages
Japanese (ja)
Inventor
Masatoshi Horiguchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3954779A priority Critical patent/JPS55131848A/en
Publication of JPS55131848A publication Critical patent/JPS55131848A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To lighten a load on an external unit by storing programs in the external unit by compressing and then by reading the stored programs in the external unit through an input-output control part. CONSTITUTION:A loader program, read by CPU1 from fixed memory unit 2, is decoded to send a read command, inclusing a read address and data, to input-output control part 5. Receiving this read command, control part 5 reads coded data from external memory unit 4 and then transfers it to decoding part 6. This decoding part 6 converts the transferred variable-length coded data into fixed-length decoded data by algorithum and it is transferred to control part 5. Control part 5 transfers the received data to CPU1, which writes it at a fixed adderess in main memory unit 3. On the completion of the writing of assigned data, control part 5 sends an interruption signal to CPU1 and after the system is initialized, CPU1 performs data processing by the loaded program.
JP3954779A 1979-04-02 1979-04-02 Data processor Pending JPS55131848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3954779A JPS55131848A (en) 1979-04-02 1979-04-02 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3954779A JPS55131848A (en) 1979-04-02 1979-04-02 Data processor

Publications (1)

Publication Number Publication Date
JPS55131848A true JPS55131848A (en) 1980-10-14

Family

ID=12556074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3954779A Pending JPS55131848A (en) 1979-04-02 1979-04-02 Data processor

Country Status (1)

Country Link
JP (1) JPS55131848A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5894032A (en) * 1981-11-30 1983-06-04 Hitachi Denshi Ltd Digital signal processor
JPS5894033A (en) * 1981-11-30 1983-06-04 Hitachi Denshi Ltd Digital signal processor
JPS58165159A (en) * 1982-03-25 1983-09-30 Canon Inc External storage device
JPH02213942A (en) * 1989-02-15 1990-08-27 Aiichiro Hayashi Computer for storing instruction code conversion hierarchy
JPH04205421A (en) * 1990-11-30 1992-07-27 Matsushita Electric Ind Co Ltd Method and device for starting operating system
JPH06137562A (en) * 1992-01-03 1994-05-17 Menumaster Inc Oven controlled by optical code reader
US5632024A (en) * 1993-06-08 1997-05-20 Hitachi, Ltd. Microcomputer executing compressed program and generating compressed branch addresses
US5652852A (en) * 1993-10-21 1997-07-29 Canon Kabushiki Kaisha Processor for discriminating between compressed and non-compressed program code, with prefetching, decoding and execution of compressed code in parallel with the decoding, with modified target branch addresses accommodated at run time
US6237080B1 (en) 1997-09-29 2001-05-22 Nokia Mobile Phones Ltd. Executable programs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862318A (en) * 1971-09-08 1973-08-31
JPS50115710A (en) * 1974-02-20 1975-09-10
JPS50143434A (en) * 1974-05-02 1975-11-18
JPS5138204A (en) * 1974-09-30 1976-03-30 Kawasaki Heavy Ind Ltd KOROGASUENERUGIIKAISHUPURANTONO SEIGYOHOHO

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862318A (en) * 1971-09-08 1973-08-31
JPS50115710A (en) * 1974-02-20 1975-09-10
JPS50143434A (en) * 1974-05-02 1975-11-18
JPS5138204A (en) * 1974-09-30 1976-03-30 Kawasaki Heavy Ind Ltd KOROGASUENERUGIIKAISHUPURANTONO SEIGYOHOHO

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5894032A (en) * 1981-11-30 1983-06-04 Hitachi Denshi Ltd Digital signal processor
JPS5894033A (en) * 1981-11-30 1983-06-04 Hitachi Denshi Ltd Digital signal processor
JPS58165159A (en) * 1982-03-25 1983-09-30 Canon Inc External storage device
JPH02213942A (en) * 1989-02-15 1990-08-27 Aiichiro Hayashi Computer for storing instruction code conversion hierarchy
JPH04205421A (en) * 1990-11-30 1992-07-27 Matsushita Electric Ind Co Ltd Method and device for starting operating system
JPH06137562A (en) * 1992-01-03 1994-05-17 Menumaster Inc Oven controlled by optical code reader
US5632024A (en) * 1993-06-08 1997-05-20 Hitachi, Ltd. Microcomputer executing compressed program and generating compressed branch addresses
US5652852A (en) * 1993-10-21 1997-07-29 Canon Kabushiki Kaisha Processor for discriminating between compressed and non-compressed program code, with prefetching, decoding and execution of compressed code in parallel with the decoding, with modified target branch addresses accommodated at run time
US6237080B1 (en) 1997-09-29 2001-05-22 Nokia Mobile Phones Ltd. Executable programs

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