JPS5498135A - Input/output control system - Google Patents
Input/output control systemInfo
- Publication number
- JPS5498135A JPS5498135A JP430478A JP430478A JPS5498135A JP S5498135 A JPS5498135 A JP S5498135A JP 430478 A JP430478 A JP 430478A JP 430478 A JP430478 A JP 430478A JP S5498135 A JPS5498135 A JP S5498135A
- Authority
- JP
- Japan
- Prior art keywords
- control
- read
- write
- nop
- flg
- 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 separate an input data field and a header field from each other and ignore the header part by setting a prescribed bit of the chanel control word in the channel control block which has control information for a peripheral device.
CONSTITUTION: When flag (FLG) A is set, control word CCW in control block CCB is decoded to decide a processing mode. If the mode is not NOP, NULL, DMT and INIT, the control is transferred to READ or WRITE for a device. The control is optionally transferred to READ and WRITE after processings such as NOP. At this time, when FLG B is set, READ or WRITE is decided. At this time, when READ is decided and the 10th bit of CCW is set, X'FF' at the head of input data is ignored.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP430478A JPS5498135A (en) | 1978-01-20 | 1978-01-20 | Input/output control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP430478A JPS5498135A (en) | 1978-01-20 | 1978-01-20 | Input/output control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5498135A true JPS5498135A (en) | 1979-08-02 |
Family
ID=11580756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP430478A Pending JPS5498135A (en) | 1978-01-20 | 1978-01-20 | Input/output control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5498135A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6137748A (en) * | 1996-08-26 | 2000-10-24 | Citizen Watch Co., Ltd. | Electronic timepiece equipped with calendar function |
-
1978
- 1978-01-20 JP JP430478A patent/JPS5498135A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6137748A (en) * | 1996-08-26 | 2000-10-24 | Citizen Watch Co., Ltd. | Electronic timepiece equipped with calendar function |
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