JPS61185148U - - Google Patents
Info
- Publication number
- JPS61185148U JPS61185148U JP6624985U JP6624985U JPS61185148U JP S61185148 U JPS61185148 U JP S61185148U JP 6624985 U JP6624985 U JP 6624985U JP 6624985 U JP6624985 U JP 6624985U JP S61185148 U JPS61185148 U JP S61185148U
- Authority
- JP
- Japan
- Prior art keywords
- request
- dma
- notifying
- requests
- detecting
- 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案によるＤＭＡ装置の一実施例を
示すブロツク図、第２図は同実施例におけるＤＭ
Ａ装置の処理内容を示すフローチヤートである。
Ａ……Ｉ／Ｏ装置側、Ｂ……ＤＭＡ装置側、Ｃ
……システム側、ＣＮＴ……カウンタ。
FIG. 1 is a block diagram showing an embodiment of a DMA device according to the present invention, and FIG. 2 is a DM device in the same embodiment.
It is a flowchart showing the processing contents of the A device. A...I/O device side, B...DMA device side, C
...System side, CNT...Counter.
Claims (1)
送を行なわせるものにおいて、リクエスト間にお
ける最大許容時間の設定を行なわせる手段と、そ
の設定時間内にリクエストがこないことを検知し
てシステムのＣＰＵに知らせる手段とを設けるよ
うにようにしたことを特徴とするＤＭＡ装置。 In a device that performs data transfer by DMA based on an external request, there is a means for setting the maximum allowable time between requests, and a means for detecting that no request comes within the set time and notifying the system CPU. A DMA device characterized in that it is provided with:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6624985U JPS61185148U (en) | 1985-05-02 | 1985-05-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6624985U JPS61185148U (en) | 1985-05-02 | 1985-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61185148U true JPS61185148U (en) | 1986-11-18 |
Family
ID=30598975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6624985U Pending JPS61185148U (en) | 1985-05-02 | 1985-05-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61185148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63206850A (en) * | 1987-02-24 | 1988-08-26 | Oki Electric Ind Co Ltd | Data processing system |
-
1985
- 1985-05-02 JP JP6624985U patent/JPS61185148U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63206850A (en) * | 1987-02-24 | 1988-08-26 | Oki Electric Ind Co Ltd | Data processing system |
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