JPS6461133A - Channel board control circuit - Google Patents
Channel board control circuitInfo
- Publication number
- JPS6461133A JPS6461133A JP21773787A JP21773787A JPS6461133A JP S6461133 A JPS6461133 A JP S6461133A JP 21773787 A JP21773787 A JP 21773787A JP 21773787 A JP21773787 A JP 21773787A JP S6461133 A JPS6461133 A JP S6461133A
- Authority
- JP
- Japan
- Prior art keywords
- port
- channel board
- control cpu
- synchronizing
- board control
- 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.)
- Granted
Links
Abstract
PURPOSE:To change a channel board control data at a high speed without disturbing a control CPU by connecting the control CPU to one port of a 2-port RAM, and connecting a synchronizing parallel/synchronizing serial converting circuit to the other port. CONSTITUTION:The control CPU 9 is connected to one port of a 2-port RAM 4 storing a channel board control data and a synchronizing parallel/ synchronizing serial conversion circuit 7 is connected to the other port. The control CPU 9 controls other peripheral circuit 10 and rewrites a channel board control data stored in the 2-port RAM 4 as required. The 2-port RAM 4 is read frequently by a synchronizing timing generating circuit 5 and the write from the other port by the control CPU 9 is not disturbed thereby.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62217737A JPH0785545B2 (en) | 1987-08-31 | 1987-08-31 | Call roadbed control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62217737A JPH0785545B2 (en) | 1987-08-31 | 1987-08-31 | Call roadbed control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6461133A true JPS6461133A (en) | 1989-03-08 |
JPH0785545B2 JPH0785545B2 (en) | 1995-09-13 |
Family
ID=16708962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62217737A Expired - Lifetime JPH0785545B2 (en) | 1987-08-31 | 1987-08-31 | Call roadbed control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0785545B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03221630A (en) * | 1990-01-26 | 1991-09-30 | Inax Corp | Automatic flushing apparatus with antifreezing function |
JPH03224920A (en) * | 1990-01-29 | 1991-10-03 | Inax Corp | Automatic flushing system provided with antifreezing function |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61156932A (en) * | 1984-12-27 | 1986-07-16 | Fujitsu Ltd | Channel-data-sequence mutual replacing system |
-
1987
- 1987-08-31 JP JP62217737A patent/JPH0785545B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61156932A (en) * | 1984-12-27 | 1986-07-16 | Fujitsu Ltd | Channel-data-sequence mutual replacing system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03221630A (en) * | 1990-01-26 | 1991-09-30 | Inax Corp | Automatic flushing apparatus with antifreezing function |
JPH03224920A (en) * | 1990-01-29 | 1991-10-03 | Inax Corp | Automatic flushing system provided with antifreezing function |
Also Published As
Publication number | Publication date |
---|---|
JPH0785545B2 (en) | 1995-09-13 |
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