JPH0458767U - - Google Patents
Info
- Publication number
- JPH0458767U JPH0458767U JP10190490U JP10190490U JPH0458767U JP H0458767 U JPH0458767 U JP H0458767U JP 10190490 U JP10190490 U JP 10190490U JP 10190490 U JP10190490 U JP 10190490U JP H0458767 U JPH0458767 U JP H0458767U
- Authority
- JP
- Japan
- Prior art keywords
- host
- command
- data
- adapter
- sent
- 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
- 230000015654 memory Effects 0.000 claims 3
- 230000006870 function Effects 0.000 claims 1
- 230000004044 response Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Information Transfer Systems (AREA)
Description
第１図は本考案のホスト間通信用のアダプタ回
路の構成を機能ブロツクで示す図、第２図は第１
図のホスト間通信用のアダプタ回路の実際の構成
の一例を示す図、第３図はホスト間通信用のアダ
プタ回路の一連の動作の概要を示すフローチヤー
ト、第４図はコマンド受信処理の動作を示すフロ
ーチヤート、第５図はステータス処理の動作を示
すフローチヤート、第６図はデイスコネクト処理
の動作を示すフローチヤート、第７図はリセレク
ト処理の動作を示すフローチヤート、第８図はエ
ラー処理の動作を示すフローチヤート、第９図は
センドデータ処理の動作を示すフローチヤート、
第１０図はレシーブデータ処理の動作を示すフロ
ーチヤート、第１１図は従来のホス間通信を行う
システムの構成例を示す図である。
１……ホスト間通信用アダプタ回路、２……コ
マンドデコード手段、３……コマンド処理手段、
４，５……バツフア（ＲＡＭ）、１０……ＳＣＳ
Ｉバス制御部、１１……ＣＰＵ、１２……ＤＭＡ
打制御部、ａ，ｂ……制御線。
Figure 1 is a functional block diagram showing the configuration of the adapter circuit for host-to-host communication of the present invention.
Figure 3 is a flowchart showing an overview of a series of operations of the adapter circuit for host-to-host communication, and Figure 4 is a command reception processing operation. 5 is a flowchart showing the operation of status processing, FIG. 6 is a flowchart showing the operation of disconnect processing, FIG. 7 is a flowchart showing the operation of reselect processing, and FIG. 8 is a flowchart showing the operation of disconnection processing. A flowchart showing the operation of error processing, FIG. 9 is a flowchart showing the operation of send data processing,
FIG. 10 is a flowchart showing the operation of receive data processing, and FIG. 11 is a diagram showing an example of the configuration of a conventional system for communication between hosts. 1... host-to-host communication adapter circuit, 2... command decoding means, 3... command processing means,
4, 5...Batuhua (RAM), 10...SCS
I bus control unit, 11... CPU, 12... DMA
Hitting control section, a, b... control lines.
Claims (1)
プタ間の通信に使用されるホスト間通信用ＳＣＳ
Ｉアダプタ回路であつて、 ＳＣＳＩバスに接続された送信元ホストアダプ
タから転送コマンド（ＳＥＮＤ）により送信され
てくるデータを送信先ホストアダプタに転送する
までの間、一時的に格納しておくためのバツフア
メモリ４，５と、 送信元ホストアダプタから送られてくる転送コ
マンド（ＳＥＮＤ）および送信先ホストアダプタ
から送られてくる受信コマンド（ＲＥＣＥＩＶＥ
）を受信して解釈するコマンドデコード手段２と
、 受信したコマンドが転送コマンド（ＳＥＮＤ）
であれば、送信元から送られてくるデータを前記
バツフアメモリ４，５に格納し、受信コマンド（
ＲＥＣＩＶＥ）であれば、該受信コマンドに応じ
て送信すべきデータが前記バツフアメモリ４，５
に格納されているかを調べ、その結果に応じてデ
ータを送信するか、またはデータの到着を待つか
を判断し、その処理を実行するコマンド処理手段
３とを有することを特徴とするホスト間通信用Ｓ
ＣＳＩアダプタ回路。[Claims for Utility Model Registration] SCS for host-to-host communication used for communication between SCSI host adapters that do not have a target function
I adapter circuit that temporarily stores data sent by a transfer command (SEND) from the source host adapter connected to the SCSI bus until it is transferred to the destination host adapter. Buffer memories 4 and 5, transfer commands (SEND) sent from the source host adapter, and receive commands (RECEIVE) sent from the destination host adapter.
) and a command decoding means 2 that receives and interprets the received command as a transfer command (SEND).
If so, the data sent from the sender is stored in the buffer memories 4 and 5, and the receive command (
RECIVE), the data to be transmitted in response to the received command is stored in the buffer memory 4, 5.
and a command processing means 3 for determining whether the data is stored in the host, determining whether to transmit the data or waiting for the arrival of the data according to the result, and executing the processing. For S
CSI adapter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10190490U JPH089792Y2 (en) | 1990-09-28 | 1990-09-28 | SCSI adapter circuit for host-to-host communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10190490U JPH089792Y2 (en) | 1990-09-28 | 1990-09-28 | SCSI adapter circuit for host-to-host communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0458767U true JPH0458767U (en) | 1992-05-20 |
| JPH089792Y2 JPH089792Y2 (en) | 1996-03-21 |
Family
ID=31845722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10190490U Expired - Lifetime JPH089792Y2 (en) | 1990-09-28 | 1990-09-28 | SCSI adapter circuit for host-to-host communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089792Y2 (en) |
-
1990
- 1990-09-28 JP JP10190490U patent/JPH089792Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089792Y2 (en) | 1996-03-21 |
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