GB1429850A - Data processing systems - Google Patents
Data processing systemsInfo
- Publication number
- GB1429850A GB1429850A GB2863073A GB2863073A GB1429850A GB 1429850 A GB1429850 A GB 1429850A GB 2863073 A GB2863073 A GB 2863073A GB 2863073 A GB2863073 A GB 2863073A GB 1429850 A GB1429850 A GB 1429850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- store
- address
- virtual
- comparator
- register
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
- G06F12/1027—Address translation using associative or pseudo-associative address translation means, e.g. translation look-aside buffer [TLB]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Memory System Of A Hierarchy Structure (AREA)
- Memory System (AREA)
Abstract
1429850 Virtual addressing INTERNATIONAL BUSINESS MACHINES CORP 15 June 1973 [21 July 1972] 28630/73 Heading G4A Virtual addresses provided by a processor 1 (Fig. 1) for accessing a main store 6 are compared in comparator 2 with data representing the boundary in main store defining an area dedicated to storing selected programme information, e.g. the supervisor, within which virtual to real translation is not necessary, the virtual address being used to address the store when it falls within that area. As described, virtual addresses from register 4 are fed if comparison occurs via AND gate 13 to register 14 to address the store. Each virtual address is also fed to associative store 3 to cause read out of the corresponding real address, if it is stored therein, via gate 15 (inhibited when comparator 2 gives an output on lead 10) to the address register 14. If neither the comparator 2 nor the associative store 3 gives a match signal, gate 16 signals processor 1 to feed the virtual address to access segment and page tables stored in the main store and if found the real and virtual addresses are then placed in the associative store under the control of a least recently used logic circuit 20. If the page is not in the main store it is brought from, for example, disc storage and written in the main store in place of a selected page.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27404072A | 1972-07-21 | 1972-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1429850A true GB1429850A (en) | 1976-03-31 |
Family
ID=23046519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2863073A Expired GB1429850A (en) | 1972-07-21 | 1973-06-15 | Data processing systems |
Country Status (19)
Country | Link |
---|---|
JP (1) | JPS5444175B2 (en) |
AR (1) | AR204699A1 (en) |
AU (1) | AU472173B2 (en) |
BG (1) | BG28079A3 (en) |
BR (1) | BR7305500D0 (en) |
CA (1) | CA985789A (en) |
CH (1) | CH550437A (en) |
DD (1) | DD106911A5 (en) |
DE (1) | DE2331394B1 (en) |
ES (1) | ES416400A1 (en) |
FR (1) | FR2194328A5 (en) |
GB (1) | GB1429850A (en) |
HU (1) | HU170278B (en) |
IT (1) | IT1003084B (en) |
NL (1) | NL7309695A (en) |
PL (1) | PL100121B1 (en) |
RO (1) | RO72464A (en) |
SU (1) | SU784814A3 (en) |
YU (1) | YU35688B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5171648A (en) * | 1974-12-18 | 1976-06-21 | Panafacom Ltd | |
JPS5275931A (en) * | 1975-12-22 | 1977-06-25 | Oki Electric Ind Co Ltd | Memory address extension mechanism for information processing unit |
JPS5821305B2 (en) * | 1976-05-31 | 1983-04-28 | 横河電機株式会社 | calculator |
JPS5821307B2 (en) * | 1976-09-14 | 1983-04-28 | 横河電機株式会社 | Data processing device with address conversion function |
JPS5821306B2 (en) * | 1976-09-14 | 1983-04-28 | 横河電機株式会社 | Data processing device with address conversion function |
JPS5435638A (en) * | 1977-08-25 | 1979-03-15 | Toshiba Corp | Address converter |
JPS5435637A (en) * | 1977-08-25 | 1979-03-15 | Toshiba Corp | Address conversion system |
DE2842288A1 (en) * | 1978-09-28 | 1980-04-17 | Siemens Ag | DATA TRANSFER SWITCH WITH ASSOCIATIVE ADDRESS SELECTION IN A VIRTUAL MEMORY |
-
1973
- 1973-01-01 AR AR24920373A patent/AR204699A1/en active
- 1973-05-25 IT IT2457473A patent/IT1003084B/en active
- 1973-06-15 GB GB2863073A patent/GB1429850A/en not_active Expired
- 1973-06-20 SU SU731947680A patent/SU784814A3/en active
- 1973-06-20 DE DE19732331394 patent/DE2331394B1/en active Pending
- 1973-06-22 CA CA174,808A patent/CA985789A/en not_active Expired
- 1973-06-25 AU AU57307/73A patent/AU472173B2/en not_active Expired
- 1973-06-26 JP JP7139873A patent/JPS5444175B2/ja not_active Expired
- 1973-06-27 CH CH939573A patent/CH550437A/en not_active IP Right Cessation
- 1973-06-28 ES ES416400A patent/ES416400A1/en not_active Expired
- 1973-06-29 YU YU177573A patent/YU35688B/en unknown
- 1973-07-12 NL NL7309695A patent/NL7309695A/xx not_active Application Discontinuation
- 1973-07-12 FR FR7326406A patent/FR2194328A5/fr not_active Expired
- 1973-07-17 BG BG7324124A patent/BG28079A3/en unknown
- 1973-07-18 RO RO7375508A patent/RO72464A/en unknown
- 1973-07-19 PL PL16417773A patent/PL100121B1/en unknown
- 1973-07-19 DD DD17242573A patent/DD106911A5/xx unknown
- 1973-07-20 HU HUIE000581 patent/HU170278B/hu unknown
- 1973-07-20 BR BR550073A patent/BR7305500D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU5730773A (en) | 1975-01-09 |
ES416400A1 (en) | 1976-02-16 |
JPS5444175B2 (en) | 1979-12-24 |
NL7309695A (en) | 1974-01-23 |
CH550437A (en) | 1974-06-14 |
YU177573A (en) | 1980-10-31 |
DD106911A5 (en) | 1974-07-05 |
HU170278B (en) | 1977-05-28 |
IT1003084B (en) | 1976-06-10 |
CA985789A (en) | 1976-03-16 |
AR204699A1 (en) | 1976-02-27 |
SU784814A3 (en) | 1980-11-30 |
FR2194328A5 (en) | 1974-02-22 |
DE2331394B1 (en) | 1974-01-10 |
YU35688B (en) | 1981-04-30 |
JPS4953338A (en) | 1974-05-23 |
DE2331394A1 (en) | 1974-01-10 |
BG28079A3 (en) | 1980-02-25 |
AU472173B2 (en) | 1976-05-20 |
BR7305500D0 (en) | 1974-08-22 |
RO72464A (en) | 1981-06-26 |
PL100121B1 (en) | 1978-09-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1453348A (en) | Data processing systems | |
GB1360401A (en) | Memory system including buffer memories | |
US4386402A (en) | Computer with dual vat buffers for accessing a common memory shared by a cache and a processor interrupt stack | |
GB1342459A (en) | Data processing systems | |
GB1438517A (en) | Machine memory | |
ES432147A1 (en) | Buffered virtual storage and data processing system | |
GB919964A (en) | Improvements in memory systems for data processing devices | |
GB1353311A (en) | Memory system | |
GB1533767A (en) | Data processing apparatus | |
ES459518A1 (en) | Plural virtual address space processing system | |
ES486724A1 (en) | Main storage configuration control system | |
GB1397253A (en) | Data processing systems | |
GB1468929A (en) | Data processing systems | |
ES433380A1 (en) | Control store unit addressing device | |
GB1499204A (en) | Computer system | |
GB1154524A (en) | Improvements in and relating to Data Processing Apparatus | |
GB1150236A (en) | Improvements in Data Processing Systems. | |
GB1429850A (en) | Data processing systems | |
GB1436792A (en) | Shared memory addresser | |
US3701107A (en) | Computer with probability means to transfer pages from large memory to fast memory | |
GB1470102A (en) | Method and apparatus for taking into account dynamic alterations to a programme | |
GB1398182A (en) | Storage address translation | |
GB798917A (en) | Cyclic memory system | |
EP0398189A3 (en) | Noncacheable address random access memory | |
GB1276590A (en) | Improvements in or relating to data processing systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |