JPS54127643A - Data transfer system - Google Patents
Data transfer systemInfo
- Publication number
- JPS54127643A JPS54127643A JP3518178A JP3518178A JPS54127643A JP S54127643 A JPS54127643 A JP S54127643A JP 3518178 A JP3518178 A JP 3518178A JP 3518178 A JP3518178 A JP 3518178A JP S54127643 A JPS54127643 A JP S54127643A
- Authority
- JP
- Japan
- Prior art keywords
- interface
- data transfer
- dialogue
- data
- gate
- 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
- Bus Control (AREA)
Abstract
PURPOSE: To carry out the data transfer of the different interfaces via the adaptor device performing the dialogue in duplication.
CONSTITUTION: The interruption given from interface 2 at the side of input/output device IO is decided at gate 91 and 92, and the transfer mode is memorized in FF93 and 94 each. The output of FF93 or 94 is delivered via gate 95 and then interrupted into interface 1 of the CPU side. While the END signal is delivered when the dialogue completes to be memorized in FF96 the data signal of interface 1 is lost. Then the data is held at the bus line via gate 97. When the END signal is received at FF98 and the dialogue comes to end also at interface 2, memory 96 is reset to complete the data transfer. Thus, the functions are shared for the firmware and the hardware, and the priority if given to the data transfer via the hardware to carry out the data transfer dialogue in duplication for the different interfaces. As a result, the IO of the different bus interface can be controlled.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3518178A JPS54127643A (en) | 1978-03-27 | 1978-03-27 | Data transfer system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3518178A JPS54127643A (en) | 1978-03-27 | 1978-03-27 | Data transfer system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54127643A true JPS54127643A (en) | 1979-10-03 |
Family
ID=12434671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3518178A Pending JPS54127643A (en) | 1978-03-27 | 1978-03-27 | Data transfer system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54127643A (en) |
-
1978
- 1978-03-27 JP JP3518178A patent/JPS54127643A/en active Pending
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