发明名称 |
Direct memory access control device |
摘要 |
In a computer wherein a central processor and at least one peripheral controller have access to a memory, this latter is divided into two simultaneously accessible zones, namely a private zone accessible by the processor and a direct access zone accessible both by the processor and by the peripheral controller. A logic unit synchronizes the controller's access to the direct access zone with the processor's access to the private zone, the controller's access being delayed, if necessary to occur simultaneously with the processor's access. The peripheral controller's access is thereby achieved without interruption of processor operations.
|
申请公布号 |
US4245305(A) |
申请公布日期 |
1981.01.13 |
申请号 |
US19780971322 |
申请日期 |
1978.12.20 |
申请人 |
ING. C. OLIVETTI & C., S.P.A. |
发明人 |
GECHELE, WALTER;CASOLINO, VINCENZO |
分类号 |
G06F13/18;G06F13/28;(IPC1-7):G06F13/00 |
主分类号 |
G06F13/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|