JPS642155A - Write controlling method for external memory device - Google Patents
Write controlling method for external memory deviceInfo
- Publication number
- JPS642155A JPS642155A JP62156558A JP15655887A JPS642155A JP S642155 A JPS642155 A JP S642155A JP 62156558 A JP62156558 A JP 62156558A JP 15655887 A JP15655887 A JP 15655887A JP S642155 A JPS642155 A JP S642155A
- Authority
- JP
- Japan
- Prior art keywords
- data
- external storage
- writing
- cache memory
- reproduced
- 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 improve the ability and the reliability of write processing by writing attribute data which is easy to be reproduced in an external storage device after temporarily writing it in a cache memory and writing attribute data which is difficult to be reproduced in the cache memory and in the external storage device at the same time.
CONSTITUTION: On a controller 2, a pass 213 which temporarily stores data from a host device 1, a pass 214 which does out the data from the cash memory 209 and writes it in the external memory device 3 later and a selection circuit 204 which can select the data from the host device 1 and the pass writing the data in the external memory 3 in parallel with writing it in the cache memory 209 are provided. When the data sent from the host device is written in the external storage device, the data which is easy to be reproduced is written in the external storage device 3 after temporarily storing it in the cache memory. Then the data which is difficult to be reproduced is written in the cache memory 209 and in the external storage device 3 at the same time. Thus, the write processing for the external storage device is accelerated and the reliability of the write data can be maintained.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62156558A JPS642155A (en) | 1987-06-25 | 1987-06-25 | Write controlling method for external memory device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62156558A JPS642155A (en) | 1987-06-25 | 1987-06-25 | Write controlling method for external memory device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS642155A true JPS642155A (en) | 1989-01-06 |
Family
ID=15630420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62156558A Pending JPS642155A (en) | 1987-06-25 | 1987-06-25 | Write controlling method for external memory device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900014A (en) * | 1994-12-08 | 1999-05-04 | Ast Research, Inc. | External means of overriding and controlling cacheability attribute of selected CPU accesses to monitor instruction and data streams |
| US5911814A (en) * | 1997-07-14 | 1999-06-15 | Mitsubishi Pencil Kabushiki Kaisha | Baked color pencil lead and process for producing the same |
-
1987
- 1987-06-25 JP JP62156558A patent/JPS642155A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900014A (en) * | 1994-12-08 | 1999-05-04 | Ast Research, Inc. | External means of overriding and controlling cacheability attribute of selected CPU accesses to monitor instruction and data streams |
| US5911814A (en) * | 1997-07-14 | 1999-06-15 | Mitsubishi Pencil Kabushiki Kaisha | Baked color pencil lead and process for producing the same |
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