JPS61196356U - - Google Patents
Info
- Publication number
- JPS61196356U JPS61196356U JP7788985U JP7788985U JPS61196356U JP S61196356 U JPS61196356 U JP S61196356U JP 7788985 U JP7788985 U JP 7788985U JP 7788985 U JP7788985 U JP 7788985U JP S61196356 U JPS61196356 U JP S61196356U
- Authority
- JP
- Japan
- Prior art keywords
- data
- transfer
- bits
- host computer
- graphics terminal
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Processing Or Creating Images (AREA)
- Bus Control (AREA)
Description
図はこの考案の一実施例を示すブロツク図であ
る。
１０……ホストコンピユータ、１２……グラフ
イツク端末、１４……結合装置。
The figure is a block diagram showing one embodiment of this invention. 10...Host computer, 12...Graphics terminal, 14...Coupling device.
Claims (1)
以上の整数）を１ワードとしてデータをＤＭＡ転
送する手段と、ホストコンピユータとの間で８ｍ
ビツト（ｍはｎより大きい整数）を１ワードとし
てデータをＤＭＡ転送する手段と、グラフイツク
端末とホストコンピユータとの間のデータ転送時
に上記２つのＤＭＡ転送手段を同期して動作させ
るとともにグラフイツク端末側の８ｎビツトデー
タとホストコンピユータ側の８ｍビツトデータと
を相互変換して受け渡すデータ変換手段と、デー
タ転送に先立つて決められた量を越えるデータが
送り手側から送出されて来てもそれを無視してデ
ータ転送を打ち切る手段と、データ転送に先立つ
て決められた量に満たないデータしか送り手側か
ら送出されて来ない場合に不足分にヌル・データ
を付加して受け手側に転送する手段と、グラフイ
ツク端末からホストコンピユータへのデータ転送
時において８ｍビツトの最終ワードに必要に応じ
て８ｎビツトのヌル・データを含ませる手段とを
備えたグラフイツク端末とホストコンピユータと
の結合装置。 8n bits (n is 1) between the graphics terminal and
8 m between the means for DMA transfer of data (integer above) as one word and the host computer.
There is a means for DMA transfer of data using bits (m is an integer larger than n) as one word, and when data is transferred between the graphics terminal and the host computer, the above two DMA transfer means are operated synchronously, and the graphics terminal side A data conversion means that mutually converts and transfers 8n-bit data and 8m-bit data from the host computer, and ignores data sent from the sender that exceeds a predetermined amount prior to data transfer. means to terminate the data transfer, and means to add null data to the missing amount and transfer it to the receiver side when less than the predetermined amount of data is sent from the sender side prior to data transfer. and means for including 8n bits of null data in the 8m bits final word as necessary during data transfer from the graphics terminal to the host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7788985U JPH0525001Y2 (en) | 1985-05-25 | 1985-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7788985U JPH0525001Y2 (en) | 1985-05-25 | 1985-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61196356U true JPS61196356U (en) | 1986-12-08 |
| JPH0525001Y2 JPH0525001Y2 (en) | 1993-06-24 |
Family
ID=30621368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7788985U Expired - Lifetime JPH0525001Y2 (en) | 1985-05-25 | 1985-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0525001Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6467072A (en) * | 1987-09-07 | 1989-03-13 | Ascii Corp | Data writing/transfer device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5816921A (en) * | 1994-09-27 | 1998-10-06 | Sega Enterprises, Ltd. | Data transferring device and video game apparatus using the same |
-
1985
- 1985-05-25 JP JP7788985U patent/JPH0525001Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6467072A (en) * | 1987-09-07 | 1989-03-13 | Ascii Corp | Data writing/transfer device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0525001Y2 (en) | 1993-06-24 |