JPS5685168A - Access control system for main storage - Google Patents
Access control system for main storageInfo
- Publication number
- JPS5685168A JPS5685168A JP16185279A JP16185279A JPS5685168A JP S5685168 A JPS5685168 A JP S5685168A JP 16185279 A JP16185279 A JP 16185279A JP 16185279 A JP16185279 A JP 16185279A JP S5685168 A JPS5685168 A JP S5685168A
- Authority
- JP
- Japan
- Prior art keywords
- line
- address
- block fetch
- given
- main storage
- 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
Links
Abstract
PURPOSE: To prevent the CPU and others from being set under the waiting state by the block fetch given from a buffer storage, by securing an automatic block fetch for the address next to the line which started the block fetch.
CONSTITUTION: When a block fetch (BF) request is given to the main storage (MS)50, an examination is given whether the line of the address next to the line which started the BF exists on the buffer storage (BS). When the absence of the line becomes clear, the next signal showing the necessity of the next address line is sent to the MS control part (MCU)51. Receiving this signal, the MCU51 adds the prescribed value not only to the line required by the MS request of the BF but to the address, and then performs the BF for the line of the next address.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16185279A JPS5685168A (en) | 1979-12-13 | 1979-12-13 | Access control system for main storage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16185279A JPS5685168A (en) | 1979-12-13 | 1979-12-13 | Access control system for main storage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5685168A true JPS5685168A (en) | 1981-07-11 |
Family
ID=15743163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16185279A Pending JPS5685168A (en) | 1979-12-13 | 1979-12-13 | Access control system for main storage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5685168A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0668736B2 (en) * | 1986-01-29 | 1994-08-31 | ディジタル エクイプメント コ−ポレ−ション | Apparatus and method for providing a cache memory unit with a write operation utilizing two system clock cycles |
US6341334B1 (en) | 1998-03-24 | 2002-01-22 | Mitsubishi Denki Kabushiki Kaisha | Bridge method, bus bridge, and multiprocessor system |
-
1979
- 1979-12-13 JP JP16185279A patent/JPS5685168A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0668736B2 (en) * | 1986-01-29 | 1994-08-31 | ディジタル エクイプメント コ−ポレ−ション | Apparatus and method for providing a cache memory unit with a write operation utilizing two system clock cycles |
US6341334B1 (en) | 1998-03-24 | 2002-01-22 | Mitsubishi Denki Kabushiki Kaisha | Bridge method, bus bridge, and multiprocessor system |
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