JPS5552151A - Address modification circuit - Google Patents

Address modification circuit

Info

Publication number
JPS5552151A
JPS5552151A JP12415378A JP12415378A JPS5552151A JP S5552151 A JPS5552151 A JP S5552151A JP 12415378 A JP12415378 A JP 12415378A JP 12415378 A JP12415378 A JP 12415378A JP S5552151 A JPS5552151 A JP S5552151A
Authority
JP
Japan
Prior art keywords
value
address
memory
accessed
processor
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.)
Granted
Application number
JP12415378A
Other languages
Japanese (ja)
Other versions
JPS5721734B2 (en
Inventor
Yasuhiko Makiura
Kimio Uehara
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
Original Assignee
Hitachi Ltd
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 filed Critical Hitachi Ltd
Priority to JP12415378A priority Critical patent/JPS5552151A/en
Publication of JPS5552151A publication Critical patent/JPS5552151A/en
Publication of JPS5721734B2 publication Critical patent/JPS5721734B2/ja
Granted legal-status Critical Current

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  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE: To remarkably reduce the processing time and memory capacity, by selecting the address value to memory-access into the synthesized value with the stored value, when the specific address area is accessed.
CONSTITUTION: In the adder 5, the address value of reference to be address- modified which is stored in the register 4, and the value represented with a partial specific but in the memory access address information of processor are added. Further, when the decode circuit 2 detects the specific address area is accessed from the processor, the address value accessed to the memory is selected to the addition value being the output of the adder 5 from the memory access address value from the processor with the switch circuit 7.
COPYRIGHT: (C)1980,JPO&Japio
JP12415378A 1978-10-11 1978-10-11 Address modification circuit Granted JPS5552151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12415378A JPS5552151A (en) 1978-10-11 1978-10-11 Address modification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12415378A JPS5552151A (en) 1978-10-11 1978-10-11 Address modification circuit

Publications (2)

Publication Number Publication Date
JPS5552151A true JPS5552151A (en) 1980-04-16
JPS5721734B2 JPS5721734B2 (en) 1982-05-10

Family

ID=14878242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12415378A Granted JPS5552151A (en) 1978-10-11 1978-10-11 Address modification circuit

Country Status (1)

Country Link
JP (1) JPS5552151A (en)

Also Published As

Publication number Publication date
JPS5721734B2 (en) 1982-05-10

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