JPH0447345B2 - - Google Patents

Info

Publication number
JPH0447345B2
JPH0447345B2 JP61297149A JP29714986A JPH0447345B2 JP H0447345 B2 JPH0447345 B2 JP H0447345B2 JP 61297149 A JP61297149 A JP 61297149A JP 29714986 A JP29714986 A JP 29714986A JP H0447345 B2 JPH0447345 B2 JP H0447345B2
Authority
JP
Japan
Prior art keywords
control circuit
serial communication
communication control
data
processor
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.)
Expired
Application number
JP61297149A
Other languages
English (en)
Japanese (ja)
Other versions
JPS63149751A (ja
Inventor
Fumio Usui
Juichi Goto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP61297149A priority Critical patent/JPS63149751A/ja
Publication of JPS63149751A publication Critical patent/JPS63149751A/ja
Publication of JPH0447345B2 publication Critical patent/JPH0447345B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14Handling requests for interconnection or transfer
    • G06F13/20Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/28Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)
  • Computer And Data Communications (AREA)
JP61297149A 1986-12-12 1986-12-12 直接メモリアクセス制御回路の半二重通信方式 Granted JPS63149751A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61297149A JPS63149751A (ja) 1986-12-12 1986-12-12 直接メモリアクセス制御回路の半二重通信方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61297149A JPS63149751A (ja) 1986-12-12 1986-12-12 直接メモリアクセス制御回路の半二重通信方式

Publications (2)

Publication Number Publication Date
JPS63149751A JPS63149751A (ja) 1988-06-22
JPH0447345B2 true JPH0447345B2 (enrdf_load_stackoverflow) 1992-08-03

Family

ID=17842834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61297149A Granted JPS63149751A (ja) 1986-12-12 1986-12-12 直接メモリアクセス制御回路の半二重通信方式

Country Status (1)

Country Link
JP (1) JPS63149751A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS63149751A (ja) 1988-06-22

Similar Documents

Publication Publication Date Title
JPH0435098B2 (enrdf_load_stackoverflow)
JP3059520B2 (ja) データ処理装置及びファクシミリ装置
US5566345A (en) SCSI bus capacity expansion controller using gating circuits to arbitrate DMA requests from a plurality of disk drives
US5611056A (en) Method for controlling the expansion of connections to a SCSI bus
JPH0447345B2 (enrdf_load_stackoverflow)
US5125079A (en) Method for controlling the data transmission of a central unit interfacing control circuit and circuit arrangement for the implementation of the method
JPS615361A (ja) 通信インタフエイス回路
JP2564550B2 (ja) 統合交換機
JPS6055752A (ja) パケツト処理方式
JPS63213053A (ja) デ−タ転送方式
JP2533152B2 (ja) 直接メモリアクセス状態判定回路
JPS61186046A (ja) 端末接続制御方式
JPH03290750A (ja) Dma転送方法
JPS61133461A (ja) Dma転送制御方式
JPH0630486B2 (ja) 半二重通信の送受信制御方式
JPS58213336A (ja) 通信制御装置
JPH02170253A (ja) データ処理装置の入出力制御方式
JPH0636519B2 (ja) 二重化制御方式
JPS60196866A (ja) デ−タ処理装置
JPH03113554A (ja) データ転送方式
JPH0154730B2 (enrdf_load_stackoverflow)
JPH04342343A (ja) データ転送システムおよびシリアルデータコントローラ
JPH08320842A (ja) データ転送制御システム
JPS63206050A (ja) デ−タ転送方法
JPS61166670A (ja) サ−ビスプロセツサバス切り替え方式