JPS6412697A - Function switching control system for central processing unit - Google Patents
Function switching control system for central processing unitInfo
- Publication number
- JPS6412697A JPS6412697A JP16925187A JP16925187A JPS6412697A JP S6412697 A JPS6412697 A JP S6412697A JP 16925187 A JP16925187 A JP 16925187A JP 16925187 A JP16925187 A JP 16925187A JP S6412697 A JPS6412697 A JP S6412697A
- Authority
- JP
- Japan
- Prior art keywords
- hardware
- circuit
- flip
- selects
- state
- 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
- Exchange Systems With Centralized Control (AREA)
Abstract
PURPOSE:To timely improve throughput by allowing a central control circuit discriminate the function of the hardware constitution while reading the state of a flip-flop circuit. CONSTITUTION:With an external changeover switch 1 turned off, the state of the flip-flop circuit 2 is turned off, a selector 3 selects a clock 42 in a clock circuit 4, a hardware control circuit 5 selects an interrupt period of K(mS) and the result is fed respectively to the hardware. On the other hand, with the external changeover switch 1 turned on, the state of the flip-flop circuit 2 is set and the selector 3 selects a clock 41 by the clock circuit 4 and the hardware control circuit 5 selects the interrupt period of L(mS). Then a central control circuit 6 reads the state of the flip-flop circuit 2 at the required time during the program execution so as to discriminate at which interruption period the hardware of the present central processing unit is operative. Thus, the throughput is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16925187A JPS6412697A (en) | 1987-07-06 | 1987-07-06 | Function switching control system for central processing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16925187A JPS6412697A (en) | 1987-07-06 | 1987-07-06 | Function switching control system for central processing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6412697A true JPS6412697A (en) | 1989-01-17 |
Family
ID=15883048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16925187A Pending JPS6412697A (en) | 1987-07-06 | 1987-07-06 | Function switching control system for central processing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6412697A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04982U (en) * | 1990-04-19 | 1992-01-07 |
-
1987
- 1987-07-06 JP JP16925187A patent/JPS6412697A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04982U (en) * | 1990-04-19 | 1992-01-07 |
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