JPS618353U - Microcomputer with DMA data transmission line - Google Patents

Microcomputer with DMA data transmission line

Info

Publication number
JPS618353U
JPS618353U JP9151084U JP9151084U JPS618353U JP S618353 U JPS618353 U JP S618353U JP 9151084 U JP9151084 U JP 9151084U JP 9151084 U JP9151084 U JP 9151084U JP S618353 U JPS618353 U JP S618353U
Authority
JP
Japan
Prior art keywords
dma
data transmission
microprocessor
microcomputer
bus line
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
Application number
JP9151084U
Other languages
Japanese (ja)
Inventor
裕一 栗山
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP9151084U priority Critical patent/JPS618353U/en
Publication of JPS618353U publication Critical patent/JPS618353U/en
Pending legal-status Critical Current

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  • Bus Control (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の一実施例を含むマイクロコンピュータ
システムのブロック図、第２図は従来のマイクロコンピ
ュータシステムのブロック図である。 図において、１・・・ＣＰＵ、２，５・・・メモリ、３
，６・・・外部機器、４・・・バスライン、７・・・共
通バスライン、８・・・ＤＭＡ用バスライン、９・・・
バス制御部、である。FIG. 1 is a block diagram of a microcomputer system including an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional microcomputer system. In the figure, 1...CPU, 2, 5...Memory, 3
, 6... External device, 4... Bus line, 7... Common bus line, 8... DMA bus line, 9...
This is a bus control unit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] マイクロプロセッサと、このマイクロプロセッサにより
制御されるメモリと、前記マイクロプロセッサとの入出
力制御機能をもつ外部機器と、これら各部を共通接続す
る共通バスラインとを含むＤＭＡデータ伝送路つきマイ
クロコンピュータにおいて、前記メモリおよび前記外部
機器のうちダイレクトメモリアクセス（ＤＭＡ）データ
伝送を行う必要のあるメモリお・よび外部機器を共通接
続するＤＭＡ用バスラインと、このＤＭＡ用バスライン
および前記共通バスラインと接続されて前記マイクロプ
ロセッサの指示によりこのＤＭＡ用バズラインの制御を
するバス制御部とを備え、前記マイクロプロセッサの動
作と独立にＤＭＡデータ伝送を行うことを特徴とするＤ
ＭＡデータ伝送路つきマイクロコンピュータ。A microcomputer with a DMA data transmission line that includes a microprocessor, a memory controlled by the microprocessor, an external device having an input/output control function with the microprocessor, and a common bus line that commonly connects these parts, A DMA bus line that commonly connects the memory and the external device that require direct memory access (DMA) data transmission among the memory and the external device, and a DMA bus line that is connected to the DMA bus line and the common bus line. and a bus control section that controls the DMA buzz line according to instructions from the microprocessor, and performs DMA data transmission independently of the operation of the microprocessor.
Microcomputer with MA data transmission line.
JP9151084U 1984-06-19 1984-06-19 Microcomputer with DMA data transmission line Pending JPS618353U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9151084U JPS618353U (en) 1984-06-19 1984-06-19 Microcomputer with DMA data transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9151084U JPS618353U (en) 1984-06-19 1984-06-19 Microcomputer with DMA data transmission line

Publications (1)

Publication Number Publication Date
JPS618353U true JPS618353U (en) 1986-01-18

Family

ID=30647463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9151084U Pending JPS618353U (en) 1984-06-19 1984-06-19 Microcomputer with DMA data transmission line

Country Status (1)

Country Link
JP (1) JPS618353U (en)

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