JPS6473561A - Buffer controller for magnetic tape device - Google Patents
Buffer controller for magnetic tape deviceInfo
- Publication number
- JPS6473561A JPS6473561A JP23063787A JP23063787A JPS6473561A JP S6473561 A JPS6473561 A JP S6473561A JP 23063787 A JP23063787 A JP 23063787A JP 23063787 A JP23063787 A JP 23063787A JP S6473561 A JPS6473561 A JP S6473561A
- Authority
- JP
- Japan
- Prior art keywords
- write system
- system command
- tape
- tape length
- command
- 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
Links
Abstract
PURPOSE:To prefetch many write system command/data by converting the prefetching of the write system command/data after detecting near end to a tape length and restricting it with the aid of accumulation quantity. CONSTITUTION:A tape length conversion means 22 converting the write system command received by a buffer part 21 to the tape length according to the recording density of time when it is written on the tape and a buffer input control means 23 restricting input for the buffer part 21 not to make the command accumulated in the buffer 21 to be over the tape length converted by the tape length conversion means 22 after a near end detection part 30 detects the near end are provided. That means, the input is controlled not by the prefetching possible number of the write system command decided based on the recording density and the longest block length of the write system command but by converting the write system command/data actually sent to the tape length according to the recording density at the time when it is written on the tape. Thus, the number of prefetching of the command is not fixed and improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230637A JPH0814933B2 (en) | 1987-09-14 | 1987-09-14 | Buffer controller for magnetic tape unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62230637A JPH0814933B2 (en) | 1987-09-14 | 1987-09-14 | Buffer controller for magnetic tape unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6473561A true JPS6473561A (en) | 1989-03-17 |
JPH0814933B2 JPH0814933B2 (en) | 1996-02-14 |
Family
ID=16910910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62230637A Expired - Lifetime JPH0814933B2 (en) | 1987-09-14 | 1987-09-14 | Buffer controller for magnetic tape unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0814933B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6319619B1 (en) | 1997-04-21 | 2001-11-20 | Nitto Denko Corporation | Semiconductor sealing resin composition, semiconductor device sealed with the same, and process for preparing semiconductor device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6215627A (en) * | 1985-07-12 | 1987-01-24 | Fujitsu Ltd | Method and device for instruction prefetch control of magnetic tape device |
-
1987
- 1987-09-14 JP JP62230637A patent/JPH0814933B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6215627A (en) * | 1985-07-12 | 1987-01-24 | Fujitsu Ltd | Method and device for instruction prefetch control of magnetic tape device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6319619B1 (en) | 1997-04-21 | 2001-11-20 | Nitto Denko Corporation | Semiconductor sealing resin composition, semiconductor device sealed with the same, and process for preparing semiconductor device |
Also Published As
Publication number | Publication date |
---|---|
JPH0814933B2 (en) | 1996-02-14 |
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