Software implementation of a high speed interface between a PDP-10 and several PDP-11s

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The DMA10 is a high speed link between a PDP-10 and up to eight PDP-11s; specifically, the PDP-10 shares sections of its memory with the PDP-11s. The two segment concept on the PDP-10 of shared/reentrant code and non-shared code is implemented. The inclusion of read only memory on the PDP-11s allows for the development of ''PROM'' software which all the PDP-11s may share. The principal difference between the DMA10 and other communications interfaces is that it is not a block transfer device. Because of the shared memory concept the features of the DMA10 are high data bandwidth and minimal processor ... continued below

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Pages: 11

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De Mesa, N.P. III January 1, 1975.

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Description

The DMA10 is a high speed link between a PDP-10 and up to eight PDP-11s; specifically, the PDP-10 shares sections of its memory with the PDP-11s. The two segment concept on the PDP-10 of shared/reentrant code and non-shared code is implemented. The inclusion of read only memory on the PDP-11s allows for the development of ''PROM'' software which all the PDP-11s may share. The principal difference between the DMA10 and other communications interfaces is that it is not a block transfer device. Because of the shared memory concept the features of the DMA10 are high data bandwidth and minimal processor intervention between data transfers. Communication programs between the PDP-10 and the PDP-11 may be tested wholly in either processor, independent of the DMA10 interface. In the current mode of operation the PDP-11's simply act as device controllers. Future plans include separate operating systems in various PDP-11s. (auth)

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Pages: 11

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Dep. NTIS

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  • IEEE 6. symposium on engineering problems of fusion research, San Diego, California, USA, 17 Nov 1975

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  • Report No.: CONF-751125--124
  • Grant Number: E(11-1)-3073
  • Office of Scientific & Technical Information Report Number: 4068195
  • Archival Resource Key: ark:/67531/metadc865115

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  • January 1, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 27, 2016, 7:40 p.m.

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De Mesa, N.P. III. Software implementation of a high speed interface between a PDP-10 and several PDP-11s, article, January 1, 1975; New Jersey. (digital.library.unt.edu/ark:/67531/metadc865115/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.