JPS57738A - Channel controller - Google Patents
Channel controllerInfo
- Publication number
- JPS57738A JPS57738A JP7377480A JP7377480A JPS57738A JP S57738 A JPS57738 A JP S57738A JP 7377480 A JP7377480 A JP 7377480A JP 7377480 A JP7377480 A JP 7377480A JP S57738 A JPS57738 A JP S57738A
- Authority
- JP
- Japan
- Prior art keywords
- ffs
- data transfer
- main storage
- controller
- optional
- 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 measure the performance of repetitive data transfer automatically by providing mode changeover FFs and main storage access sequence starting FFs which correspond to channel devices and a means of initializing a data transfer control information table.
CONSTITUTION: When one of channel CH devices 3-1W3-n accesses a main storage controller 1, a memory request MRQ bit in a data transfer control information table 21 which correspons to the optional CH device is reset with a signal of the microinstruction decoder 28 of a CH controller 2. Then, one of mode changeover FFs 27-1W27-n of the corresponding CH is set to set desired one of FFs 24-1W24-n for starting a main storage access sequence through corresponding one of OR gates 23-1W23-n. If there is no memory reply at this point in time, the MRQ to the controller 1 is sent out repeatedly via a priority determining circuit 25. The number of the set signals per unit time is observed at a terminal 26 to measure the performance of the repetitive data transfer of the optional CH.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7377480A JPS57738A (en) | 1980-06-03 | 1980-06-03 | Channel controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7377480A JPS57738A (en) | 1980-06-03 | 1980-06-03 | Channel controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57738A true JPS57738A (en) | 1982-01-05 |
Family
ID=13527884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7377480A Pending JPS57738A (en) | 1980-06-03 | 1980-06-03 | Channel controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57738A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4826908A (en) * | 1987-12-30 | 1989-05-02 | Mobil Oil Corporation | Compositions of linear polyethylene and ethylene-vinyl alcohol polymer and films having reduced blocking |
US5460760A (en) * | 1994-04-18 | 1995-10-24 | Mobil Oil Corporation | Method of extruding ethylene-vinyl alcohol copolymer (EVOH) |
-
1980
- 1980-06-03 JP JP7377480A patent/JPS57738A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4826908A (en) * | 1987-12-30 | 1989-05-02 | Mobil Oil Corporation | Compositions of linear polyethylene and ethylene-vinyl alcohol polymer and films having reduced blocking |
US5460760A (en) * | 1994-04-18 | 1995-10-24 | Mobil Oil Corporation | Method of extruding ethylene-vinyl alcohol copolymer (EVOH) |
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