Data Transmission processing system having DMA channels running

Details Data Transmission processing system having DMA channels running Data Transmission processing system having DMA channels running

1992-11-24

1996-06-25

Lee, Thomas C.

Boots, shoes, and leggings

395842, 395858, 395864, 395 8, 395 72, 36424231, 36424232, 36424233, 364DIG1, G06F 1312, G06F 1314

Patent

active

055309011

ABSTRACT:
A data transmission processing system provided between a host unit and peripheral devices including at least a memory device and a processing device. The host unit outputs, to the transmission processing system, DMA transmission process request commands. The data transmission process system includes a DMA control unit, provided with a plurality of DMA channels, for cyclically selecting a DMA channel from the plurality of DMA channels in accordance with a predetermined priority, the plurality of DMA channels being allocated to processes with respect to the peripheral devices, and a DMA execution unit for carrying out a DMA transmission process for transmitting data output from the host unit to the memory device via a selected DMA channel corresponding to the memory device in data transmission timing of the host unit and a DMA transmission process for transmitting data stored in the memory device to the processing device via a selected DMA channel corresponding to the processing device in accordance with the DMA transmission process request commands supplied from the host unit.

REFERENCES:
patent: 4017839 (1977-04-01), Calle et al.
patent: 4067059 (1978-01-01), Derchak
patent: 4688166 (1987-08-01), Schneider
patent: 4750107 (1988-06-01), Buggert
patent: 4831523 (1989-05-01), Lewis et al.
patent: 4933686 (1990-06-01), Izumi et al.

Affiliated with

Also associated with

Rating

Data Transmission processing system having DMA channels running does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data Transmission processing system having DMA channels running , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data Transmission processing system having DMA channels running will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2198008