JPS61133844U - - Google Patents

Info

Publication number
JPS61133844U
JPS61133844U JP412486U JP412486U JPS61133844U JP S61133844 U JPS61133844 U JP S61133844U JP 412486 U JP412486 U JP 412486U JP 412486 U JP412486 U JP 412486U JP S61133844 U JPS61133844 U JP S61133844U
Authority
JP
Japan
Prior art keywords
command
input
command chain
control device
output 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
JP412486U
Other languages
Japanese (ja)
Other versions
JPH0132140Y2 (en
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 filed Critical
Priority to JP1986004124U priority Critical patent/JPH0132140Y2/ja
Publication of JPS61133844U publication Critical patent/JPS61133844U/ja
Application granted granted Critical
Publication of JPH0132140Y2 publication Critical patent/JPH0132140Y2/ja
Expired legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の実施例を示すブロツク図で
ある。 １……チヤネル制御装置、２……チヤネル、３
……入出力制御装置、４……ＩＯＤ番号レジスタ
、５……コマンドチエインフリツプフロツプ、６
……コマンドチエイン判定手段、７……コマンド
開始信号、８……データ線、９……起動指示信号
、１０……出力データ線、１１……状態情報報告
信号、１２……入力データ線、１３……コマンド
チエイン指示信号。 FIG. 1 is a block diagram showing an embodiment of the present invention. 1... Channel control device, 2... Channel, 3
...Input/output control device, 4...IOD number register, 5...Command chain flip-flop, 6
... Command chain determination means, 7 ... Command start signal, 8 ... Data line, 9 ... Start instruction signal, 10 ... Output data line, 11 ... Status information report signal, 12 ... Input data line, 13 ...Command chain instruction signal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] チヤネル制御装置内のマイクロプログラムによ
つて制御されるチヤネルに設けられ、該チヤネル
と入出力制御装置との間におけるコマンドチエイ
ンを処理するコマンドチエイン処理回路であつて
、チエインされたコマンドの最初のコマンドの実
行に際して、前記入出力制御装置を起動する時に
、マイクロプログラムから送られた入出力装置番
号を格納し保持するＩＯＤ番号レジスタと、前記
最初のコマンドの実行に際して、前記入出力制御
装置を起動する時に、マイクロプログラムから送
られたコマンドチエインフラグを保持するコマン
ドチエインフラグ保持手段と、前記最初のコマン
ドの実行が終了した時に、前記コマンドチエイン
フラグ保持手段の前記コマンドチエインフラグと
前記入出力制御装置からの入出力装置の状態情報
とにより、コマンドチエインを行なうかどうかを
判定するコマンドチエイン判定手段とを含み、前
記最初のコマンドの実行が終了した時に、前記コ
マンドチエイン判定手段がコマンドチエインを示
していれば、ただちに、前記入出力制御装置にコ
マンドチエインの指示を行ない、前記入出力制御
装置が応答した時点で、前記ＩＯＤ番号レジスタ
から読出した入出力装置番号を前記入出力制御装
置に対して送出し、次のコマンドの起動をかける
ことを特徴とするコマンドチエイン処理回路。 A command chain processing circuit that is provided in a channel controlled by a microprogram in a channel control device and processes a command chain between the channel and an input/output control device, the first command of the chained commands. an IOD number register that stores and holds the input/output device number sent from the microprogram when the input/output control device is activated upon execution of the first command; At times, the command chain flag holding means holds the command chain flag sent from the microprogram, and when the execution of the first command is completed, the command chain flag of the command chain flag holding means and the input/output control device and a command chain determining means for determining whether or not to perform a command chain based on status information of the input/output device of the input/output device, and if the command chain determining means indicates a command chain when execution of the first command is completed. For example, immediately give a command chain instruction to the input/output control device, and when the input/output control device responds, send the input/output device number read from the IOD number register to the input/output control device. , a command chain processing circuit characterized by starting the next command.
JP1986004124U 1986-01-17 1986-01-17 Expired JPH0132140Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986004124U JPH0132140Y2 (en) 1986-01-17 1986-01-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986004124U JPH0132140Y2 (en) 1986-01-17 1986-01-17

Publications (2)

Publication Number Publication Date
JPS61133844U true JPS61133844U (en) 1986-08-21
JPH0132140Y2 JPH0132140Y2 (en) 1989-10-02

Family

ID=30479393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986004124U Expired JPH0132140Y2 (en) 1986-01-17 1986-01-17

Country Status (1)

Country Link
JP (1) JPH0132140Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149732A (en) * 1975-06-13 1976-12-22 Hitachi Ltd Command chaining system
JPS5422135A (en) * 1977-07-20 1979-02-19 Fujitsu Ltd Command chanin process system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149732A (en) * 1975-06-13 1976-12-22 Hitachi Ltd Command chaining system
JPS5422135A (en) * 1977-07-20 1979-02-19 Fujitsu Ltd Command chanin process system

Also Published As

Publication number Publication date
JPH0132140Y2 (en) 1989-10-02

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