Intel 8089

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Pinout of Intel 8089

The Intel 8089 input/output coprocessor was available for use with the 8086/8088 central processor. It used the same programming technique as 8087 for input/output operations, such as transfer of data from memory to a peripheral device, and so reducing the load on the CPU.

Because IBM didn't use it in IBM PC design, it did not become well known; later I/O-coprocessors did not keep the x89 designation the way math coprocessors kept the x87 designation. It was used in the Apricot PC and the Intel Multibus iSBC-215 Hard disk drive controller.[1] It was also used in the Altos 586 multi-user computer.[2] Intel themselves used the 8089 in their reference designs (which they also commercialized) as System 86.[3]

Peripherals[edit]

Literature and datasheets[edit]

References[edit]

  1. ^ http://bitsavers.trailing-edge.com/pdf/intel/iSBC/144780-002_iSBC_215_Generic_Winchester_Disk_Controller_Hardware_Reference_Manual_Dec84.pdf
  2. ^ Review: Altos 586. InfoWorld. 7 November 1983. pp. 89–90. ISSN 0199-6649.
  3. ^ http://bitsavers.informatik.uni-stuttgart.de/pdf/intel/system3xx/172758-001_Introduction_to_the_System_86_330_and_380_Systems_Mar83.pdf
  4. ^ 8086 Available for industrial environment, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 29