JPS5621261A - Processing system for memory unit read/write - Google Patents

Processing system for memory unit read/write

Info

Publication number
JPS5621261A
JPS5621261A JP9702279A JP9702279A JPS5621261A JP S5621261 A JPS5621261 A JP S5621261A JP 9702279 A JP9702279 A JP 9702279A JP 9702279 A JP9702279 A JP 9702279A JP S5621261 A JPS5621261 A JP S5621261A
Authority
JP
Japan
Prior art keywords
write
register
byte
address
content
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
JP9702279A
Other languages
Japanese (ja)
Other versions
JPS602703B2 (en
Inventor
Takashi Chiba
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54097022A priority Critical patent/JPS602703B2/en
Publication of JPS5621261A publication Critical patent/JPS5621261A/en
Publication of JPS602703B2 publication Critical patent/JPS602703B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Executing Machine-Instructions (AREA)
  • Memory System (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE: To perform read/write without noticing the boundary, by providing a plurality of area selected with the same line address in one memory unit and constituting that the byte decoder selects any area.
CONSTITUTION: In case of read access, a plurality of address information read out from the tab 2-1 and the bits 8W20 in the content of the register 13 are compared at the comparison circuit 16, and if in agreement, one of the data in 8-byte unit is selected from the data section 2-0, set to the register 12, and if not in agreement, block loading is made with the content of the address register 14. With the bits 27W 31 in the content of the effective address register 13, the byte selection circuit 15 performs area selection and the data section 2-0 is accessed with the write address and the byte selection circuit 15.
COPYRIGHT: (C)1981,JPO&Japio
JP54097022A 1979-07-30 1979-07-30 Storage device read/write processing method Expired JPS602703B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54097022A JPS602703B2 (en) 1979-07-30 1979-07-30 Storage device read/write processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54097022A JPS602703B2 (en) 1979-07-30 1979-07-30 Storage device read/write processing method

Publications (2)

Publication Number Publication Date
JPS5621261A true JPS5621261A (en) 1981-02-27
JPS602703B2 JPS602703B2 (en) 1985-01-23

Family

ID=14180772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54097022A Expired JPS602703B2 (en) 1979-07-30 1979-07-30 Storage device read/write processing method

Country Status (1)

Country Link
JP (1) JPS602703B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143483A (en) * 1982-02-18 1983-08-26 Mitsubishi Electric Corp Memory address controller
US5269195A (en) * 1991-10-22 1993-12-14 Kanzaki Kokyukoki Mfg. Co., Ltd. Vehicle park lock mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143483A (en) * 1982-02-18 1983-08-26 Mitsubishi Electric Corp Memory address controller
US5269195A (en) * 1991-10-22 1993-12-14 Kanzaki Kokyukoki Mfg. Co., Ltd. Vehicle park lock mechanism

Also Published As

Publication number Publication date
JPS602703B2 (en) 1985-01-23

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