JPS5459041A - External memory device - Google Patents
External memory deviceInfo
- Publication number
- JPS5459041A JPS5459041A JP12631077A JP12631077A JPS5459041A JP S5459041 A JPS5459041 A JP S5459041A JP 12631077 A JP12631077 A JP 12631077A JP 12631077 A JP12631077 A JP 12631077A JP S5459041 A JPS5459041 A JP S5459041A
- Authority
- JP
- Japan
- Prior art keywords
- byte
- setter
- sector
- track
- display
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To realize an optional setter constitution with the same hard system and everg track by constituting the information track with the track description part and others containing the setter number byte and the sector length byte.
CONSTITUTION: The code format on track TR of the external memory device consists of index mark point IDX, gap byte part G1 formed between IDX and track description part TD, gap byte part G3 between records, and setter parts SEC1W SECn. While TD comprises flag byte F1 to display the TR state, cylinder/head byte C/H to display the cylinder and head addresses, setter number byte SN to display the setter number existing within TR, sector chart byte SL, and check byte CK. Both the sector number and the sector length on a certain TR can set logically the sector of the data length designated by SL of TD by the SN number of TD
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12631077A JPS5459041A (en) | 1977-10-19 | 1977-10-19 | External memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12631077A JPS5459041A (en) | 1977-10-19 | 1977-10-19 | External memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5459041A true JPS5459041A (en) | 1979-05-12 |
Family
ID=14932010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12631077A Pending JPS5459041A (en) | 1977-10-19 | 1977-10-19 | External memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5459041A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04159662A (en) * | 1990-10-23 | 1992-06-02 | Iryo Joho Syst Kaihatsu Center | File system |
-
1977
- 1977-10-19 JP JP12631077A patent/JPS5459041A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04159662A (en) * | 1990-10-23 | 1992-06-02 | Iryo Joho Syst Kaihatsu Center | File system |
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