Peripheral DMA controller for data acquisition system

Details Peripheral DMA controller for data acquisition system Peripheral DMA controller for data acquisition system

1986-02-13

1989-07-11

Chan, Eddie P.

Boots, shoes, and leggings

36424231, 3642448, G06F 1300

Patent

active

048477508

ABSTRACT:
A peripheral DMA (direct memory access) system having a computer with an internal DMA controller and only one channel available for external DMA operations includes: a peripheral DMA controller coupled between the computer address bus and a peripheral address bus, and also between the computer data bus and a peripheral data bus. The peripheral DMA controller includes a dual port "frame map memory" in which addresses of various peripheral devices are sequentially stored prior to initiating a DMA operation wherein data is rapidly transferred from various peripheral devices having nonsequential addresses to sequential locations of the computer memory or vice versa.

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