JPS6461133A - Channel board control circuit - Google Patents

Channel board control circuit

Info

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
Application number
JP21773787A
Other languages
Japanese (ja)
Other versions
JPH0785545B2 (en
Inventor
Masaharu Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62217737A priority Critical patent/JPH0785545B2/en
Publication of JPS6461133A publication Critical patent/JPS6461133A/en
Publication of JPH0785545B2 publication Critical patent/JPH0785545B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62217737A 1987-08-31 1987-08-31 Call roadbed control circuit Expired - Lifetime JPH0785545B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61156932A (en) * 1984-12-27 1986-07-16 Fujitsu Ltd Channel-data-sequence mutual replacing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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