Peripheral control circuitry for personal computer

Details Peripheral control circuitry for personal computer Peripheral control circuitry for personal computer

1986-07-18

1989-05-09

Shaw, Gareth D.

Boots, shoes, and leggings

84 119, 84 101, G06F 316, G10K 1500

Patent

active

048294730

ABSTRACT:
A peripheral control circuit for a computer system. Independent control and interface circuits are provided for left and right audio channels, for a communications port, for storage media, and for joysticks or paddles. Control logic is provided for direct memory access to system memory and for interrupts to the processor by each of the peripherals. Sound data corresponding to a sound waveform during a particular time period is fetched using DMA or interrupts. Registers store data for selecting the output rate of the sound data, the length of the sound waveform, and the volume of the sound waveform. Four audio channels and two separate audio ports are provide.

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"Amiga the Message is the Medium", by John J. Anderson, in Creative Computing, vol. 11, No. 9, pp. 32-41, 1985.

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